Note:
The expiration time in the watch graphic is amended if the watch is
replaced, cancelled or extended.
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Watch Status Reports.
SEL8
URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 748
NWS STORM PREDICTION CENTER NORMAN OK
1005 PM CDT THU JUL 24 2008
THE NWS STORM PREDICTION CENTER HAS ISSUED A
SEVERE THUNDERSTORM WATCH FOR PORTIONS OF
CENTRAL NEBRASKA
SOUTH CENTRAL SOUTH DAKOTA
EFFECTIVE THIS THURSDAY NIGHT AND FRIDAY MORNING FROM 1005 PM
UNTIL 300 AM CDT.
HAIL TO 1.5 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 80
MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.
THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 105
STATUTE MILES EITHER SIDE OF A LINE FROM 30 MILES NORTH NORTHWEST
OF MULLEN NEBRASKA TO 30 MILES SOUTHEAST OF BURWELL NEBRASKA.
FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH
OUTLINE UPDATE (WOUS64 KWNS WOU8).
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. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY
DO PRODUCE TORNADOES.
OTHER WATCH INFORMATION...CONTINUE...WW 746...WW 747...
DISCUSSION...MATURING MCS NOW DEVELOPING ESEWD INTO CNTRL NE AND
SCNTRL SD WILL CONTINUE TO MAINTAIN THE THREAT OF HAIL AND DAMAGING
WINDS FOR AT LEAST A COUPLE MORE HOURS. PORTIONS OF THE MCS HAVE
BECOME DOMINATED BY EITHER OUTFLOW OR STRATIFORM MDT TO HVY RAIN.
HOWEVER...OUTFLOW INTERSECTIONS AND EMBEDDED ROTATING SEGMENTS
WITHIN THE COMPLEX WILL OCCASIONALLY POSE A THREAT FOR BOTH DAMAGING
WINDS AND HAIL.
AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 70
KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM
MOTION VECTOR 28035.
...CARBIN
Note:
The Aviation Watch (SAW) product is an approximation to the watch area.
The actual watch is depicted by the shaded areas.
SAW8
WW 748 SEVERE TSTM NE SD 250305Z - 250800Z
AXIS..105 STATUTE MILES EITHER SIDE OF LINE..
30NNW MHN/MULLEN NE/ - 30SE BUB/BURWELL NE/
..AVIATION COORDS.. 90NM EITHER SIDE /58W ANW - 18WNW OBH/
HAIL SURFACE AND ALOFT..1.5 INCHES. WIND GUSTS..70 KNOTS.
MAX TOPS TO 500. MEAN STORM MOTION VECTOR 28035.
LAT...LON 43860051 42889797 40069947 41040204
THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
FOR WOU8.
Watch 748 Status Report Messages:
STATUS REPORT #4 ON WW 748
VALID 250735Z - 250800Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 25 NNW IML
TO 15 NW BBW TO 25 E ONL.
WW 748 WILL BE ALLOWED TO EXPIRE AS SCHEDULED AT 08Z.
..GUYER..07/25/08
ATTN...WFO...LBF...GID...UNR...
&&
STATUS REPORT FOR WS 748
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
NEC019-029-041-047-063-065-071-073-077-079-081-083-085-093-111-
121-125-135-137-163-175-183-250800-
NE
. NEBRASKA COUNTIES INCLUDED ARE
BUFFALO CHASE CUSTER
DAWSON FRONTIER FURNAS
GARFIELD GOSPER GREELEY
HALL HAMILTON HARLAN
HAYES HOWARD LINCOLN
MERRICK NANCE PERKINS
PHELPS SHERMAN VALLEY
WHEELER
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #3 ON WW 748
VALID 250635Z - 250740Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 50 SW MHN TO
25 NW BBW TO 40 SSE 9V9.
FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 1908
A LOCAL EXTENSION BY WFO HASTINGS WILL ADD ADDITIONAL COUNTIES
ACROSS CENTRAL NEB...SEE LOCAL WCN PRODUCT FOR DETAILS.
..GUYER..07/25/08
ATTN...WFO...LBF...GID...UNR...
&&
STATUS REPORT FOR WS 748
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
NEC005-009-015-019-029-041-047-063-065-071-073-083-085-089-101-
111-113-115-117-135-137-149-163-175-183-250740-
NE
. NEBRASKA COUNTIES INCLUDED ARE
ARTHUR BLAINE BOYD
BUFFALO CHASE CUSTER
DAWSON FRONTIER FURNAS
GARFIELD GOSPER HARLAN
HAYES HOLT KEITH
LINCOLN LOGAN LOUP
MCPHERSON PERKINS PHELPS
ROCK SHERMAN VALLEY
WHEELER
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #2 ON WW 748
VALID 250540Z - 250640Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 25 NNW MHN
TO 20 SW ANW TO 25 S 9V9.
..GUYER..07/25/08
ATTN...WFO...LBF...GID...UNR...
&&
STATUS REPORT FOR WS 748
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
NEC005-009-015-017-019-029-031-041-047-063-065-071-073-075-083-
085-089-091-101-103-111-113-115-117-135-137-149-163-171-175-183-
250640-
NE
. NEBRASKA COUNTIES INCLUDED ARE
ARTHUR BLAINE BOYD
BROWN BUFFALO CHASE
CHERRY CUSTER DAWSON
FRONTIER FURNAS GARFIELD
GOSPER GRANT HARLAN
HAYES HOLT HOOKER
KEITH KEYA PAHA LINCOLN
LOGAN LOUP MCPHERSON
PERKINS PHELPS ROCK
SHERMAN THOMAS VALLEY
WHEELER
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #1 ON WW 748
VALID 250440Z - 250540Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
..GOSS..07/25/08
ATTN...WFO...LBF...GID...UNR...
&&
STATUS REPORT FOR WS 748
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
NEC005-009-015-017-019-029-031-041-047-063-065-071-073-075-083-
085-089-091-101-103-111-113-115-117-135-137-149-163-171-175-183-
250540-
NE
. NEBRASKA COUNTIES INCLUDED ARE
ARTHUR BLAINE BOYD
BROWN BUFFALO CHASE
CHERRY CUSTER DAWSON
FRONTIER FURNAS GARFIELD
GOSPER GRANT HARLAN
HAYES HOLT HOOKER
KEITH KEYA PAHA LINCOLN
LOGAN LOUP MCPHERSON
PERKINS PHELPS ROCK
SHERMAN THOMAS VALLEY
WHEELER
$$
SDC095-121-123-250540-
SD
. SOUTH DAKOTA COUNTIES INCLUDED ARE
MELLETTE TODD TRIPP
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
Note:
Click for Complete Product Text.
Tornadoes
Probability of 2 or more tornadoes
|
Low (20%)
|
Probability of 1 or more strong (F2-F5) tornadoes
|
Low (5%)
|
Wind
Probability of 10 or more severe wind events
|
Mod (30%)
|
Probability of 1 or more wind events > 65 knots
|
Mod (30%)
|
Hail
Probability of 10 or more severe hail events
|
Mod (30%)
|
Probability
of 1 or
more hailstones > 2 inches
|
Low (20%)
|
Combined Severe Hail/Wind
Probability of 6 or more combined severe hail/wind events
|
High (70%)
|
For each watch, probabilities for particular events inside the watch
(listed above in each table) are determined by the issuing forecaster.
The "Low" category contains probability values ranging from less than 2%
to 20% (F2-F5 tornadoes), less than 5% to 20% (all other probabilities),
"Moderate" from 30% to 60%, and "High" from 70% to greater than 95%.
High values are bolded and lighter in color to provide awareness of
an increased threat for a particular event.