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The expiration time in the watch graphic is amended if the watch is
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Watch Status Reports.
SEL9
URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 709
NWS STORM PREDICTION CENTER NORMAN OK
1230 PM MDT TUE AUG 18 2009
THE NWS STORM PREDICTION CENTER HAS ISSUED A
SEVERE THUNDERSTORM WATCH FOR PORTIONS OF
EASTERN COLORADO
NORTHEAST NEW MEXICO
EFFECTIVE THIS TUESDAY AFTERNOON AND EVENING FROM 1230 PM UNTIL
900 PM MDT.
HAIL TO 2.5 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70
MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.
THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 60
STATUTE MILES EAST AND WEST OF A LINE FROM 60 MILES NORTH
NORTHWEST OF AKRON COLORADO TO 40 MILES WEST SOUTHWEST OF
TUCUMCARI NEW MEXICO. FOR A COMPLETE DEPICTION OF THE WATCH SEE
THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU9).
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.
DISCUSSION...THUNDERSTORMS WILL LIKELY INCREASE IN
COVERAGE/INTENSITY FROM THE FRONT RANGE EWD THROUGH THE
AFTERNOON...AS SURFACE HEATING COINCIDES WITH THE ARRIVAL OF A MID
LEVEL TROUGH FROM WRN/CENTRAL CO. THE COMBINATION OF MODERATE
INSTABILITY AND 40-50 KT EFFECTIVE BULK SHEAR WILL SUPPORT
SUPERCELLS CAPABLE OF PRODUCING LARGE HAIL AND DAMAGING WINDS. AN
ISOLATED TORNADO CANNOT BE RULED OUT ACROSS SE CO/NE NM WHERE
LOW-LEVEL MOISTURE IS GREATER AND THERE IS SOME POTENTIAL FOR
LOW-LEVEL FLOW TO BACK TO MORE ELY/SELY LATER THIS AFTERNOON.
AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
TO 2.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60
KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM
MOTION VECTOR 28020.
...THOMPSON
Note:
The Aviation Watch (SAW) product is an approximation to the watch area.
The actual watch is depicted by the shaded areas.
SAW9
WW 709 SEVERE TSTM CO NM 181830Z - 190300Z
AXIS..60 STATUTE MILES EAST AND WEST OF LINE..
60NNW AKO/AKRON CO/ - 40WSW TCC/TUCUMCARI NM/
..AVIATION COORDS.. 50NM E/W /32WSW SNY - 35WSW TCC/
HAIL SURFACE AND ALOFT..2.5 INCHES. WIND GUSTS..60 KNOTS.
MAX TOPS TO 500. MEAN STORM MOTION VECTOR 28020.
LAT...LON 40970251 34950319 34950530 40970480
THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
FOR WOU9.
Watch 709 Status Report Messages:
STATUS REPORT #6 ON WW 709
VALID 190135Z - 190240Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 25 SW SPD TO
25 SE TAD TO 10 NW LAA.
..GRAMS..08/19/09
ATTN...WFO...BOU...PUB...ABQ...
&&
STATUS REPORT FOR WS 709
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
COC009-011-071-099-190240-
CO
. COLORADO COUNTIES INCLUDED ARE
BACA BENT LAS ANIMAS
PROWERS
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #5 ON WW 709
VALID 190040Z - 190140Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 30 SW SPD TO
20 N RTN TO 25 N TAD TO 35 N LAA.
..GRAMS..08/19/09
ATTN...WFO...BOU...PUB...ABQ...
&&
STATUS REPORT FOR WS 709
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
COC009-011-061-071-089-099-190140-
CO
. COLORADO COUNTIES INCLUDED ARE
BACA BENT KIOWA
LAS ANIMAS OTERO PROWERS
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #4 ON WW 709
VALID 182335Z - 190040Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 40 WSW TCC
TO 45 SE RTN TO 40 WNW TAD TO 25 WNW ITR.
..GRAMS..08/18/09
ATTN...WFO...BOU...PUB...ABQ...
&&
STATUS REPORT FOR WS 709
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
COC009-011-025-061-071-089-099-101-190040-
CO
. COLORADO COUNTIES INCLUDED ARE
BACA BENT CROWLEY
KIOWA LAS ANIMAS OTERO
PROWERS PUEBLO
$$
NMC007-021-037-059-190040-
NM
. NEW MEXICO COUNTIES INCLUDED ARE
COLFAX HARDING QUAY
UNION
$$
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.
$$
STATUS REPORT #3 ON WW 709
VALID 182245Z - 182340Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 40 SW PUB TO
25 S AKO TO 35 ESE CYS.
..GRAMS..08/18/09
ATTN...WFO...BOU...PUB...ABQ...
&&
STATUS REPORT FOR WS 709
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
COC009-011-025-041-055-061-071-073-075-089-099-101-121-182340-
CO
. COLORADO COUNTIES INCLUDED ARE
BACA BENT CROWLEY
EL PASO HUERFANO KIOWA
LAS ANIMAS LINCOLN LOGAN
OTERO PROWERS PUEBLO
WASHINGTON
$$
NMC007-019-021-033-037-047-059-182340-
NM
. NEW MEXICO COUNTIES INCLUDED ARE
COLFAX GUADALUPE HARDING
MORA QUAY SAN MIGUEL
UNION
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #2 ON WW 709
VALID 182130Z - 182240Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
FOR ADDITIONAL INFORMATION SEE FORTHCOMING MESOSCALE DISCUSSION
1912.
..GRAMS..08/18/09
ATTN...WFO...BOU...PUB...ABQ...
&&
STATUS REPORT FOR WS 709
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
COC001-005-009-011-025-027-031-035-039-041-043-055-061-071-073-
075-087-089-099-101-119-121-123-182240-
CO
. COLORADO COUNTIES INCLUDED ARE
ADAMS ARAPAHOE BACA
BENT CROWLEY CUSTER
DENVER DOUGLAS ELBERT
EL PASO FREMONT HUERFANO
KIOWA LAS ANIMAS LINCOLN
LOGAN MORGAN OTERO
PROWERS PUEBLO TELLER
WASHINGTON WELD
$$
NMC007-019-021-033-037-047-059-182240-
NM
. NEW MEXICO COUNTIES INCLUDED ARE
COLFAX GUADALUPE HARDING
MORA QUAY SAN MIGUEL
UNION
$$
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.
$$
STATUS REPORT #1 ON WW 709
VALID 182035Z - 182140Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
..GOSS..08/18/09
ATTN...WFO...BOU...PUB...ABQ...
&&
STATUS REPORT FOR WS 709
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
COC001-005-009-011-025-027-031-035-039-041-043-055-061-071-073-
075-087-089-099-101-119-121-123-182140-
CO
. COLORADO COUNTIES INCLUDED ARE
ADAMS ARAPAHOE BACA
BENT CROWLEY CUSTER
DENVER DOUGLAS ELBERT
EL PASO FREMONT HUERFANO
KIOWA LAS ANIMAS LINCOLN
LOGAN MORGAN OTERO
PROWERS PUEBLO TELLER
WASHINGTON WELD
$$
NMC007-019-021-033-037-047-059-182140-
NM
. NEW MEXICO COUNTIES INCLUDED ARE
COLFAX GUADALUPE HARDING
MORA QUAY SAN MIGUEL
UNION
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
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 (60%)
|
Probability
of 1 or
more hailstones > 2 inches
|
Mod (50%)
|
Combined Severe Hail/Wind
Probability of 6 or more combined severe hail/wind events
|
High (90%)
|
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.