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.
SEL3
URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 73
NWS STORM PREDICTION CENTER NORMAN OK
735 PM CDT THU MAR 26 2009
THE NWS STORM PREDICTION CENTER HAS ISSUED A
SEVERE THUNDERSTORM WATCH FOR PORTIONS OF
SOUTH CENTRAL OKLAHOMA
NORTH CENTRAL TEXAS
EFFECTIVE THIS THURSDAY EVENING FROM 735 PM UNTIL 1100 PM CDT.
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 APPROXIMATELY ALONG AND 55
STATUTE MILES EAST AND WEST OF A LINE FROM 25 MILES NORTHEAST OF
ARDMORE OKLAHOMA TO 60 MILES SOUTHWEST OF SHERMAN TEXAS. FOR A
COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE
UPDATE (WOUS64 KWNS WOU3).
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 71...WW 72...
DISCUSSION...A SMALL CLUSTER OF SEVERE STORMS HAS DEVELOPED ALONG
THE DRYLINE SOUTH OF ADM. THESE STORMS MAY PERSIST FOR A FEW HOURS
WITH A RISK OF LARGE HAIL AND DAMAGING WINDS. RAPID COOLING AFTER
SUNSET IS EXPECTED TO LESSEN THE TORNADO RISK.
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 450. MEAN STORM
MOTION VECTOR 27035.
...HART
Note:
The Aviation Watch (SAW) product is an approximation to the watch area.
The actual watch is depicted by the shaded areas.
SAW3
WW 73 SEVERE TSTM OK TX 270035Z - 270400Z
AXIS..55 STATUTE MILES EAST AND WEST OF LINE..
25NE ADM/ARDMORE OK/ - 60SW GYI/SHERMAN TX/
..AVIATION COORDS.. 50NM E/W /30NE ADM - 23NW DFW/
HAIL SURFACE AND ALOFT..2 INCHES. WIND GUSTS..60 KNOTS.
MAX TOPS TO 450. MEAN STORM MOTION VECTOR 27035.
LAT...LON 34549573 33099644 33099834 34549768
THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
FOR WOU3.
Watch 73 Status Report Messages:
STATUS REPORT #2 ON WW 73
VALID 270335Z - 270440Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 15 N FTW TO
10 SSE ADM TO 15 NNW DUA TO 35 ENE DUA.
..BROYLES..03/27/09
ATTN...WFO...OUN...FWD...
&&
STATUS REPORT FOR WS 73
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
OKC013-095-270440-
OK
. OKLAHOMA COUNTIES INCLUDED ARE
BRYAN MARSHALL
$$
TXC121-147-181-270440-
TX
. TEXAS COUNTIES INCLUDED ARE
DENTON FANNIN GRAYSON
$$
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.
$$
STATUS REPORT #1 ON WW 73
VALID 270135Z - 270240Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 20 NNE MWL
TO 25 ENE SPS.
..BROYLES..03/27/09
ATTN...WFO...OUN...FWD...
&&
STATUS REPORT FOR WS 73
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
OKC005-013-019-029-067-069-085-095-099-270240-
OK
. OKLAHOMA COUNTIES INCLUDED ARE
ATOKA BRYAN CARTER
COAL JEFFERSON JOHNSTON
LOVE MARSHALL MURRAY
$$
TXC097-121-147-181-337-497-270240-
TX
. TEXAS COUNTIES INCLUDED ARE
COOKE DENTON FANNIN
GRAYSON MONTAGUE WISE
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
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.
weather.gov 
