MKC WW 161600
ALZ000-MSZ000-162200-
URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 808
STORM PREDICTION CENTER NORMAN OK
1000 AM CST SAT DEC 16 2000
THE STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF
WESTERN...CENTRAL AND NORTHERN ALABAMA
EASTERN MISSISSIPPI
EFFECTIVE THIS SATURDAY MORNING AND AFTERNOON FROM 1015 AM UNTIL
400 PM CST.
...THIS IS A PARTICULARLY DANGEROUS SITUATION...
DAMAGING TORNADOES...LARGE HAIL TO 2 INCHES IN DIAMETER...
THUNDERSTORM WIND GUSTS TO 70 MPH...AND DANGEROUS LIGHTNING ARE
POSSIBLE IN THESE AREAS.
THE TORNADO WATCH AREA IS ALONG AND 95 STATUTE MILES EAST AND WEST
OF A LINE FROM 65 MILES SOUTHEAST OF LAUREL MISSISSIPPI TO 25 MILES
NORTHEAST OF MUSCLE SHOALS ALABAMA.
REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR
TORNADOES AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA.
PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING
WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS AND POSSIBLE
WARNINGS.
DISCUSSION...THUNDERSTORMS DEVELOPING ATTM ALONG ZONE OF DEEPENING
PRE-FRONTAL CONVERGENCE EXPECTED TO INTENSIFY LATER TODAY WITH
CONTINUED INFLUX OF MOIST GULF AIR /SURFACE DEWPOINTS IN THE MID
60S/ AND MODEST SURFACE HEATING. DEEP-LAYER SHEAR...NOW ON THE
ORDER OF 55 KTS...SHOULD FURTHER STRENGTHEN AS 100 KT MID-LEVEL
SPEED MAX NOW OVER CNTRL TX REDVELOPS EWD. THUS...SETUP WILL BE
FAVORABLE FOR SUPERCELLS WITH BOWS AND POSSIBLE TORNADOES. A FEW
OF THE TORNADOES COULD BECOME STRONG...ESPECIALLY INVOF WEAK BACK-
DOOR FRONT IN AL...AS LINEAR FORCING DOES NOT APPEAR TO BE EXTREME.
AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND
GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500.
MEAN STORM MOTION VECTOR 22045.
...CORFIDI
;345,0853 305,0864 305,0900 345,0885;
NNNN
ZCZC MKCSEL9 ALL 162200;331,0834 293,0844 293,0870 331,0861;
WWUS9 KMKC 161636
MKC WW 161636
ALZ000-FLZ000-GAZ000-CWZ000-162200-
URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 809
STORM PREDICTION CENTER NORMAN OK
1036 AM CST SAT DEC 16 2000
THE STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF
SOUTHEAST AND EAST CENTRAL ALABAMA
THE FLORIDA PANHANDLE
SOUTHWEST AND WEST CENTRAL GEORGIA
COASTAL WATERS
EFFECTIVE THIS SATURDAY MORNING AND AFTERNOON FROM 1145 AM UNTIL
400 PM CST.
TORNADOES...HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS
TO 60 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.
THE TORNADO WATCH AREA IS ALONG AND 70 STATUTE MILES EAST AND WEST
OF A LINE FROM 45 MILES SOUTH SOUTHWEST OF PANAMA CITY FLORIDA TO
15 MILES NORTH NORTHEAST OF LA GRANGE GEORGIA.
REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR
TORNADOES AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA.
PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING
WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS AND POSSIBLE
WARNINGS.
OTHER WATCH INFORMATION... CONTINUE...WW 808...
DISCUSSION...THUNDERSTORMS DEVELOPING ALONG DEEP-LAYER CONFLUENCE
LINE ORIENTED NNE/SSW ACROSS REGION EXPECTED TO STRENGTHEN WITH
CONTINUED SURFACE HEATING. ARRIVAL OF STRONGER FLOW ALOFT WILL
FURTHER LENGTHEN ALREADY-LONG HODOGRAPHS TO SUPPORT SUPERCELL
POTENTIAL. TORNADIC THREAT MAY BE ENHANCED INVOF BACK-DOOR FRONT
EDGING NWD ACROSS ERN AL/SW GA.
AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND
GUSTS TO 50 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500.
MEAN STORM MOTION VECTOR 23040.
...CORFIDI
;331,0834 293,0844 293,0870 331,0861;
NNNN
ZCZC MKCSEL0 ALL 170000;363,0822 350,0842 350,0873 363,0853;
WWUS9 KMKC 161858
MKC WW 161858
TNZ000-170000-
URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 810
STORM PREDICTION CENTER NORMAN OK
158 PM EST SAT DEC 16 2000
THE STORM PREDICTION CENTER HAS ISSUED A
SEVERE THUNDERSTORM WATCH FOR PORTIONS OF
MIDDLE AND EASTERN TENNESSEE
EFFECTIVE THIS SATURDAY AFTERNOON AND EVENING FROM 200 PM UNTIL 700
PM EST.
HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 60
MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.
THE SEVERE THUNDERSTORM WATCH AREA IS ALONG AND 85 STATUTE MILES
EAST AND WEST OF A LINE FROM 45 MILES WEST OF CHATTANOOGA TENNESSEE
TO 55 MILES NORTH OF KNOXVILLE TENNESSEE.
REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE
FAVORABLE FOR SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA.
PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING
WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS AND POSSIBLE
WARNINGS.
OTHER WATCH INFORMATION... CONTINUE...WW 808...WW 809...
DISCUSSION...SUPERCELL THREAT EXPECTED TO SPREAD NWD INTO PARTS OF
ERN TN THIS AFTERNOON AS MODEST AIR MASS RECOVERY CONTINUES AHEAD
OF EXISTING SQUALL LINE OVER NRN AL/MIDDLE TN. WHILE BOUNDARY
LAYER AIR MASS SPREADING NWD FROM ERN GA IS RATHER COOL /AVERAGE
SURFACE DEWPOINTS IN THE LOWER 50S/...SUBSTANTIAL LOW- TO MID-LEVEL
SHEAR PRESENT TO SUPPORT A CONTINUED EMBEDDED SUPERCELL PRESENCE
AND POSSIBLY AN ISOLATED TORNADO.
AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 50
KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 450. MEAN STORM
MOTION VECTOR 22040.
...CORFIDI
;363,0822 350,0842 350,0873 363,0853;
NNNN
ZCZC MKCSEL1 ALL 170100;310,0862 293,0865 293,0901 310,0894;
WWUS9 KMKC 161912
MKC WW 161912
ALZ000-FLZ000-LAZ000-MSZ000-CWZ000-170100-
URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 811
STORM PREDICTION CENTER NORMAN OK
112 PM CST SAT DEC 16 2000
THE STORM PREDICTION CENTER HAS ISSUED A
SEVERE THUNDERSTORM WATCH FOR PORTIONS OF
SOUTHERN ALABAMA
WESTERN FLORIDA PANHANDLE
SOUTHEAST LOUISIANA
SOUTHERN MISSISSIPPI
COASTAL WATERS
EFFECTIVE THIS SATURDAY AFTERNOON AND EVENING FROM 130 PM UNTIL 700
PM CST.
HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70
MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.
THE SEVERE THUNDERSTORM WATCH AREA IS ALONG AND 100 STATUTE MILES
EAST AND WEST OF A LINE FROM 65 MILES SOUTH SOUTHEAST OF GULFPORT
MISSISSIPPI TO 25 MILES NORTH NORTHEAST OF MOBILE ALABAMA.
REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE
FAVORABLE FOR SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA.
PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING
WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS AND POSSIBLE
WARNINGS.
OTHER WATCH INFORMATION... CONTINUE...WW 808...WW 809...WW 810...
DISCUSSION...MODEST CONVERGENCE ALONG LEAD COLD FRONT...COUPLED
WITH DIURNAL HEATING AND CONTINUED GULF MOISTURE INFLUX...LIKELY TO
RESULT IN SOME STRENGHTENING OF CONVECTION ALONG THE FRONT DURING
THE NEXT SEVERAL HOURS. AMPLE SHEAR WILL BE PRESENT TO SUPPORT
SUPERCELLS WITH HAIL/SMALL SACLE BOWS. LINEAR FORCING OF BOUNDARY
AND VEERED FLOW AHEAD OF IT SUGGEST THAT TORNADIC POTENTIAL WILL BE
LIMITED.
AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60
KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM
MOTION VECTOR 23045.
...CORFIDI
;310,0862 293,0865 293,0901 310,0894;
NNNN
ZCZC MKCSEL2 ALL 170000;350,0842 331,0845 331,0862 350,0855;
WWUS9 KMKC 162017
MKC WW 162017
ALZ000-GAZ000-170000-
URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 812
STORM PREDICTION CENTER NORMAN OK
217 PM CST SAT DEC 16 2000
THE STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF
NORTHEAST ALABAMA
NORTHWEST GEORGIA
EFFECTIVE THIS SATURDAY AFTERNOON AND EVENING FROM 230 PM UNTIL 600
PM CST.
TORNADOES...HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS
TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.
THE TORNADO WATCH AREA IS ALONG AND 40 STATUTE MILES EAST AND WEST
OF A LINE FROM 30 MILES SOUTH SOUTHEAST OF ANNISTON ALABAMA TO 45
MILES NORTH OF ROME GEORGIA.
REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR
TORNADOES AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA.
PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING
WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS AND POSSIBLE
WARNINGS.
OTHER WATCH INFORMATION... CONTINUE...WW 808...WW 809...WW
810...WW 811...
DISCUSSION...BOUNDARY LAYER AIR MASS RECOVERY WILL CONTINUE NEXT
SEVERAL HOURS ACROSS NE AL/NW GA...AS WEDGE FRONT EDGES FARTHER N.
GIVEN LONG HODOGRAPHS /ON THE ORDER OF 60 KTS/...PRESENCE OF
DISCRETE SUPERCELLS UPSTREAM...STRONG PRESSURE FALLS AND BACKED
LOW-LEVEL FLOW INVOF BOUNDARY...THREAT FOR ADDITIONAL TORNADOES
APPEARS GREAT ENOUGH TO WARRANT NEWD EXTENSION OF EXISTING AL/GA
TORNADO WATCHES.
AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND
GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500.
MEAN STORM MOTION VECTOR 23045.
...CORFIDI
;350,0842 331,0845 331,0862 350,0855;
NNNN
ZCZC MKCSEL3 ALL 170300;392,0810 363,0822 363,0843 392,0831;
WWUS9 KMKC 162112
MKC WW 162112
KYZ000-OHZ000-VAZ000-WVZ000-170300-
URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 813
STORM PREDICTION CENTER NORMAN OK
412 PM EST SAT DEC 16 2000
THE STORM PREDICTION CENTER HAS ISSUED A
SEVERE THUNDERSTORM WATCH FOR PORTIONS OF
EASTERN KENTUCKY
SOUTHERN OHIO
SOUTHWEST VIRGINIA
WESTERN WEST VIRGINIA
EFFECTIVE THIS SATURDAY AFTERNOON AND EVENING FROM 430 PM UNTIL
1000 PM EST.
HAIL TO 1 INCH IN DIAMETER...THUNDERSTORM WIND GUSTS TO 60
MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.
THE SEVERE THUNDERSTORM WATCH AREA IS ALONG AND 60 STATUTE MILES
EAST AND WEST OF A LINE FROM 45 MILES SOUTHEAST OF LONDON KENTUCKY
TO 15 MILES NORTH NORTHEAST OF ATHENS OHIO.
REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE
FAVORABLE FOR SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA.
PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING
WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS AND POSSIBLE
WARNINGS.
OTHER WATCH INFORMATION... CONTINUE...WW 808...WW 809...WW
810...WW 811...WW 812...
DISCUSSION...LINE OF LOW-TOPPED CONVECTION DOWNSTREAM FROM
DEVELOPING SUB-SYNOPTIC LOW ATTM ORGANIZING OVER MIDDLE TN EXPECTED
TO REMAIN STRONG AS IT INGESTS POCKET OF DOWNSLOPE-WARMED BOUNDARY
LAYER AIR OVER ERN KY. GIVEN STRENGTH OF SHEAR AND ORIENTATION OF
LINE...SETUP APPEARS CONDUCIVE TO EMBEDDED BOWS.
AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
TO 1 INCH EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 50 KNOTS.
A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 400. MEAN STORM MOTION
VECTOR 21035.
...CORFIDI
;392,0810 363,0822 363,0843 392,0831;
NNNN
ZCZC MKCSEL4 ALL 170400;350,0841 310,0862 310,0885 350,0864;
WWUS9 KMKC 162142
MKC WW 162142
ALZ000-GAZ000-170400-
URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 814
STORM PREDICTION CENTER NORMAN OK
342 PM CST SAT DEC 16 2000
THE STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF
ALABAMA
NORTHWEST GEORGIA
EFFECTIVE THIS SATURDAY AFTERNOON AND EVENING FROM 400 PM UNTIL
1000 PM CST.
...THIS IS A PARTICULARLY DANGEROUS SITUATION...
DAMAGING TORNADOES...LARGE HAIL TO 2 INCHES IN DIAMETER...
THUNDERSTORM WIND GUSTS TO 70 MPH...AND DANGEROUS LIGHTNING ARE
POSSIBLE IN THESE AREAS.
THE TORNADO WATCH AREA IS ALONG AND 75 STATUTE MILES EAST AND WEST
OF A LINE FROM 100 MILES SOUTH SOUTHWEST OF SELMA ALABAMA TO 50
MILES NORTH NORTHWEST OF ROME GEORGIA.
REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR
TORNADOES AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA.
PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING
WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS AND POSSIBLE
WARNINGS.
OTHER WATCH INFORMATION...THIS TORNADO WATCH REPLACES TORNADO WATCH
NUMBER 808...TORNADO WATCH NUMBER 812. WATCH NUMBER 808...812 WILL
NOT BE IN EFFECT AFTER 400 PM CST. CONTINUE...WW 809...WW 810...WW
811...WW 813...
DISCUSSION...THREAT FOR TORNADOES WILL CONTINUE THIS EVENING IN
ZONE OF DEEP-LAYER CONFLUENCE AND UPPER LEVEL DIVERGENCE AHEAD OF
INTENSIFYING MID/UPPER LEVEL TROUGH. GIVEN LONG HODOGRAPHS AND
HIGH BOUNDARY LAYER MOISTURE CONTENT...CONDITIONS SHOULD REMAIN
FAVORABLE FOR A FEW TORNADOES DESPITE ONSET OF NIGHTFALL.
AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND
GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500.
MEAN STORM MOTION VECTOR 22045.
...CORFIDI
;350,0841 310,0862 310,0885 350,0864;
NNNN
ZCZC MKCSEL5 ALL 170400;332,0820 303,0832 303,0864 332,0851;
WWUS9 KMKC 162152
MKC WW 162152
ALZ000-GAZ000-170400-
URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 815
STORM PREDICTION CENTER NORMAN OK
452 PM EST SAT DEC 16 2000
THE STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF
SOUTHEAST ALABAMA
CENTRAL AND SOUTHERN GEORGIA
EFFECTIVE THIS SATURDAY AFTERNOON AND EVENING FROM 500 PM UNTIL
1100 PM EST.
TORNADOES...HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS
TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.
THE TORNADO WATCH AREA IS ALONG AND 95 STATUTE MILES EAST AND WEST
OF A LINE FROM 15 MILES SOUTH SOUTHEAST OF MARIANNA FLORIDA TO 55
MILES NORTH OF MACON GEORGIA.
REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR
TORNADOES AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA.
PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING
WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS AND POSSIBLE
WARNINGS.
OTHER WATCH INFORMATION...THIS TORNADO WATCH REPLACES TORNADO WATCH
NUMBER 809. WATCH NUMBER 809 WILL NOT BE IN EFFECT AFTER 500 PM
EST. CONTINUE...WW 810...WW 811...WW 813...WW 814...
DISCUSSION...THREAT FOR SUPERCELLS AND TORNADOES LIKELY TO PERSIST
AND SPREAD EWD LATER THIS EVENING AS LARGE SCALE TROUGH CONTINUES
TO DEEPEN UPSTREAM ACROSS THE LWR MS VLY. EXISTING NNE/SSW
CONFLUENCE ZONE NOW OVER WW REGION...AND ADDITIONAL ONE FARTHER W
WILL LIKELY REMAIN THE AXES OF STORM INITIATION. TORNADO POTENTIAL
WILL PROBABLY BE GREATEST INVOF WEDGE BOUNDARY EDGING SLOWLY N
ACROSS CNTRL GA.
AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND
GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500.
MEAN STORM MOTION VECTOR 22045.
...CORFIDI
;332,0820 303,0832 303,0864 332,0851;
NNNN
ZCZC MKCSEL6 ALL 170400;310,0863 304,0832 292,0833 293,0864;
WWUS9 KMKC 162313
MKC WW 162313
FLZ000-CWZ000-170400-
URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 816
STORM PREDICTION CENTER NORMAN OK
613 PM EST SAT DEC 16 2000
THE STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF
NORTHWEST FLORIDA
COASTAL WATERS
EFFECTIVE THIS SATURDAY AFTERNOON AND EVENING FROM 645 PM UNTIL
1100 PM EST.
TORNADOES...HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS
TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.
THE TORNADO WATCH AREA IS ALONG AND 50 STATUTE MILES EITHER SIDE OF
A LINE FROM 35 MILES SOUTH SOUTHWEST OF CRESTVIEW FLORIDA TO 55
MILES EAST SOUTHEAST OF TALAHASSEE FLORIDA.
REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR
TORNADOES AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA.
PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING
WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS AND POSSIBLE
WARNINGS.
OTHER WATCH INFORMATION... CONTINUE...WW 810...WW 811...WW
812...WW 813...WW 814...WW 815...
DISCUSSION...LINE OF STRONG/SEVERE THUNDERSTORMS WITH EMBEDDED
LEWPS IS MOVING EWD ACROSS THE EXTREME WRN FL PANHANDLE...WHILE
AHEAD OF THE LINE ISOLATED CELLS AREA INCREASING OVER THE NERN GULF
FROM NEAR AQQ SWWD. AIR MASS REMAINS MOIST AND UNSTABLE WITH
SURFACE DEW POINTS NEAR 70F AND MUCAPE OF 1000-2000 J/KG. KTAE VAD
WINDS VEER AND INCREASE WITH HEIGHT RESULTING IN FAVORABLE DEEP
LAYER SHEAR AND HELICITY FOR POSSIBLE TORNADIC SUPERCELLS.
AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND
GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500.
MEAN STORM MOTION VECTOR 22045.
...WEISS
;310,0863 304,0832 292,0833 293,0864;
NNNN
ZCZC MKCSEL7 ALL 170400;350,0860 363,0835 363,0815 350,0840;
WWUS9 KMKC 162340
MKC WW 162340
TNZ000-170400-
URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 817
STORM PREDICTION CENTER NORMAN OK
640 PM EST SAT DEC 16 2000
THE STORM PREDICTION CENTER HAS ISSUED A
SEVERE THUNDERSTORM WATCH FOR PORTIONS OF
EASTERN TENNESSEE
EFFECTIVE THIS SATURDAY AFTERNOON AND EVENING FROM 700 PM UNTIL
1100 PM EST.
HAIL TO 1 INCH IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70
MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.
THE SEVERE THUNDERSTORM WATCH AREA IS ALONG AND 55 STATUTE MILES
EAST AND WEST OF A LINE FROM 10 MILES EAST OF CHATTANOOGA TENNESSEE
TO 35 MILES WEST NORTHWEST OF BRISTOL TENNESSEE.
REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE
FAVORABLE FOR SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA.
PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING
WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS AND POSSIBLE
WARNINGS.
OTHER WATCH INFORMATION...THIS SEVERE THUNDERSTORM WATCH REPLACES
SEVERE THUNDERSTORM WATCH NUMBER 810. WATCH NUMBER 810 WILL NOT BE
IN EFFECT AFTER 700 PM EST. CONTINUE...WW 811...WW 812...WW
813...WW 814...WW 815...WW 816...
DISCUSSION...LINE OF STRONG/SEVERE THUNDERSTORMS IS MOVING RAPIDLY
NEWD INTO SERN TN IN ADVANCE OF INTENSE UPPER TROUGH MOVING ACROSS
THE LOWER OH VALLEY. RADAR CONTINUES TO SHOW EMBEDDED SMALL-SCALE
LEWPS WITHIN THE LINE SUGGESTING POTENTIAL FOR DAMAGING WIND GUSTS.
AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
TO 1 INCH EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60 KNOTS.
A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 400. MEAN STORM MOTION
VECTOR 22045.
...WEISS
;350,0860 363,0835 363,0815 350,0840;
NNNN
ZCZC MKCSEL8 ALL 171000;344,0765 320,0803 320,0834 344,0801;
WWUS9 KMKC 170334
MKC WW 170334
GAZ000-NCZ000-SCZ000-CWZ000-171000-
URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 818
STORM PREDICTION CENTER NORMAN OK
1034 PM EST SAT DEC 16 2000
THE STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF
EAST CENTRAL AND SOUTHEAST GEORGIA
SOUTHEAST NORTH CAROLINA
CENTRAL AND EASTERN SOUTH CAROLINA
COASTAL WATERS
EFFECTIVE THIS SATURDAY NIGHT AND SUNDAY MORNING FROM 1100 PM UNTIL
500 AM EST.
TORNADOES...HAIL TO 1 INCH IN DIAMETER...THUNDERSTORM WIND GUSTS TO
70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.
THE TORNADO WATCH AREA IS ALONG AND 95 STATUTE MILES EAST AND WEST
OF A LINE FROM 55 MILES WEST OF SAVANNAH GEORGIA TO 50 MILES
NORTHWEST OF WILMINGTON NORTH CAROLINA.
REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR
TORNADOES AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA.
PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING
WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS AND POSSIBLE
WARNINGS.
OTHER WATCH INFORMATION...THIS TORNADO WATCH REPLACES TORNADO WATCH
NUMBER 815. WATCH NUMBER 815 WILL NOT BE IN EFFECT AFTER 1100 PM
EST.
ADDITIONAL PARTS OF ERN NC WILL BE MONITORED FOR POSSIBLE WATCHES
LATER TONIGHT.
DISCUSSION...BANDS OF STRONG THUNDERSTORMS ARE EXPECTED TO SPREAD
RAPIDLY NEWD IN ADVANCE OF STRONG COLD FRONT SURGING ACROSS THE
SERN STATES. CONVECTION IS OCCURRING AHEAD OF INTENSE UPPER TROUGH
ACCLERATING ENEWD ACROSS THE TN VALLEY. WARM FRONT IS NOW LIFTING
NWWD INTO THE CAROLINAS WITH SURFACE DEW POINTS IN THE 60S IN THE
WARM SECTOR. VAD DATA SHOW 40-65 KT SOUTHERLY WINDS IN THE LOWEST
1-2 KM PROVIDING VERY STRONG SHEAR AND FAVORABLE HELICITY FOR
SUPERCELLS AND POSSIBLE TORNADOES.
AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 1 INCH...EXTREME TURBULENCE AND SURFACE WIND
GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 450.
MEAN STORM MOTION VECTOR 23050.
...WEISS
;344,0765 320,0803 320,0834 344,0801;
NNNN
ZCZC MKCSEL9 ALL 171200;344,0803 370,0782 370,0741 344,0762;
WWUS9 KMKC 170518
MKC WW 170518
NCZ000-VAZ000-CWZ000-171200-
URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 819
STORM PREDICTION CENTER NORMAN OK
1218 AM EST SUN DEC 17 2000
THE STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF
CENTRAL AND EASTERN NORTH CAROLINA
SOUTH CENTRAL AND SOUTHEAST VIRGINIA
COASTAL WATERS
EFFECTIVE THIS SUNDAY MORNING FROM 1230 AM UNTIL 700 AM EST.
TORNADOES...HAIL TO 1 INCH IN DIAMETER...THUNDERSTORM WIND GUSTS TO
70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.
THE TORNADO WATCH AREA IS ALONG AND 115 STATUTE MILES EAST AND WEST
OF A LINE FROM 25 MILES EAST SOUTHEAST OF FAYETTEVILLE NORTH
CAROLINA TO 15 MILES NORTHWEST OF NORFOLK VIRGINIA.
REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR
TORNADOES AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA.
PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING
WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS AND POSSIBLE
WARNINGS.
OTHER WATCH INFORMATION... CONTINUE...WW 818...
DISCUSSION...SEVERAL BANDS OF THUNDERSTORMS CONTINUE TO MOVR
RAPIDLY NEWD FROM PARTS OF THE CAROLINAS TOWARD VA IN ADVANCE OF
STRONG UPPER TROUGH AND FAST MOVING COLD FRONT. LOW LEVEL MOISTURE
IS RAPIDLY RETURNING NWWD AHEAD OF THE COLD FRONT...AND VERY STRONG
LOW LEVEL WINDS/VERTICAL SHEAR IS SPREADING NWD ACROSS THE AREA.
ISOLATED SEVERE STORMS INCLUDING TORNADIC SUPERCELLS ARE POSSIBLE
DURING THE OVERNIGHT HOURS.
AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 1 INCH...EXTREME TURBULENCE AND SURFACE WIND
GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 400.
MEAN STORM MOTION VECTOR 22050.
...WEISS
;344,0803 370,0782 370,0741 344,0762;
NNNN
ZCZC MKCSEL0 ALL 171200;365,0780 400,0760 400,0730 365,0751;
WWUS9 KMKC 170708
MKC WW 170708
DEZ000-MDZ000-NJZ000-PAZ000-VAZ000-CWZ000-171200-
URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 820
STORM PREDICTION CENTER NORMAN OK
208 AM EST SUN DEC 17 2000
THE STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF
DELAWARE
EASTERN MARYLAND
SOUTHERN HALF OF NEW JERSEY
SOUTHEAST PENNSYLVANIA
EASTERN VIRGINIA
COASTAL WATERS
EFFECTIVE THIS SUNDAY MORNING FROM 215 AM UNTIL 700 AM EST.
TORNADOES...HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS
TO 80 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.
THE TORNADO WATCH AREA IS ALONG AND 80 STATUTE MILES EAST AND WEST
OF A LINE FROM 50 MILES SOUTHEAST OF RICHMOND VIRGINIA TO 15 MILES
WEST NORTHWEST OF LAKEHURST NEW JERSEY.
REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR
TORNADOES AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA.
PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING
WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS AND POSSIBLE
WARNINGS.
OTHER WATCH INFORMATION... CONTINUE...WW 818...WW 819...WW 820...
DISCUSSION...AIR MASS CONTINUE TO DESTABLIZE RAPIDLY ACROSS ERN
SECTIONS OF THE DELMARVA. LIFTED INDICES ARE 0 TO -4 AND VAD WIND
PROFILES CONTINUE TO SHOW DEEP LAYER SHEAR SUPPORTIVE OF
SUPERCELLS.
AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND
GUSTS TO 70 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 400.
MEAN STORM MOTION VECTOR 22050.
...MCCARTHY
;365,0780 400,0760 400,0730 365,0751;
NNNN
ZCZC MKCSEL1 ALL 171700;355,0772 400,0760 400,0735 355,0751;
WWUS9 KMKC 171116
MKC WW 171116
DEZ000-MDZ000-NCZ000-NJZ000-PAZ000-VAZ000-CWZ000-171700-
URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 821
STORM PREDICTION CENTER NORMAN OK
616 AM EST SUN DEC 17 2000
THE STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF
DELAWARE
EASTERN MARYLAND
NORTHEASTERN NORTH CAROLINA
SOUTHERN NEW JERSEY
SOUTHEAST PENNSYLVANIA
EXTREME EASTERN VIRGINIA
ADJACENT COASTAL WATERS
EFFECTIVE THIS SUNDAY MORNING FROM 700 AM UNTIL NOON EST.
TORNADOES...HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS
TO 80 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.
THE TORNADO WATCH AREA IS ALONG AND 60 STATUTE MILES EAST AND WEST
OF A LINE FROM 30 MILES SOUTH SOUTHWEST OF ELIZABETH CITY NORTH
CAROLINA TO 20 MILES NORTHEAST OF PHILADELPHIA PENNSYLVANIA.
REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR
TORNADOES AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA.
PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING
WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS AND POSSIBLE
WARNINGS.
OTHER WATCH INFORMATION...THIS TORNADO WATCH REPLACES TORNADO WATCH
NUMBER 819...TORNADO WATCH NUMBER 820. WATCH NUMBER 819...820 WILL
NOT BE IN EFFECT AFTER 700 AM EST.
DISCUSSION...LINE OF STRONG TO SEVERE STORMS CONTINUE TO MOVE
RAPIDLY NEWD ACROSS AREA. WINDS CONTINUE TO BE VERY STRONG WITH 60
KT AT LOW LEVELS AND 90 KT AT MID LEVELS. AIR MASS IS MARGINALLY
UNSTABLE WITH LIFTED INDICES TO -4 OVER NERN NC. STRONG SPEED
SHEAR INDICATES THE ISOLATED THREAT OF TORNADOES.
AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND
GUSTS TO 70 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 400.
MEAN STORM MOTION VECTOR 22050.
...MCCARTHY
;355,0772 400,0760 400,0735 355,0751;
NNNN