Note:
The expiration time in the watch graphic is amended if the watch is
replaced, cancelled or extended.
Note: Click for
Watch Status Reports.
SEL2
URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 802
NWS STORM PREDICTION CENTER NORMAN OK
635 PM CDT SUN AUG 3 2008
THE NWS STORM PREDICTION CENTER HAS ISSUED A
SEVERE THUNDERSTORM WATCH FOR PORTIONS OF
NORTHWEST LOUISIANA
EAST CENTRAL AND NORTHEAST TEXAS
EFFECTIVE THIS SUNDAY NIGHT FROM 635 PM UNTIL MIDNIGHT CDT.
HAIL TO 1.5 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 115
STATUTE MILES EAST AND WEST OF A LINE FROM 45 MILES NORTH OF
SHREVEPORT LOUISIANA TO 40 MILES SOUTH SOUTHEAST OF CORSICANA
TEXAS. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED
WATCH OUTLINE UPDATE (WOUS64 KWNS WOU2).
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 801...
DISCUSSION...TSTMS NOW OVER THE TX PINEY WOODS EXPECTED TO PROPAGATE
MAINLY NNW INTO DEEPLY MIXED LOW LVL ENVIRONMENT OVER NE TX...WHILE
MODERATE UNIDIRECTIONAL NE FLOW ALOFT MOVES INDIVIDUAL CELLS SWWD.
RICH MOISTURE AVAILABILITY AND STEEP LOW LVL LAPSE RATES LIKELY TO
CONTINUE TO POSE A THREAT FOR WET MICROBURSTS AND MARGINALLY SVR
HAIL AS AMALGAMATING COLD POOLS ALLOW STORMS TO BECOME BETTER
ORGANIZED/SUSTAINED.
AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60
KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM
MOTION VECTOR 08020.
...CORFIDI
Note:
The Aviation Watch (SAW) product is an approximation to the watch area.
The actual watch is depicted by the shaded areas.
SAW2
WW 802 SEVERE TSTM LA TX 032335Z - 040500Z
AXIS..115 STATUTE MILES EAST AND WEST OF LINE..
45N SHV/SHREVEPORT LA/ - 40SSE CRS/CORSICANA TX/
..AVIATION COORDS.. 100NM E/W /20N EIC - 59E ACT/
HAIL SURFACE AND ALOFT..1.5 INCHES. WIND GUSTS..60 KNOTS.
MAX TOPS TO 500. MEAN STORM MOTION VECTOR 08020.
LAT...LON 33099183 31479419 31479808 33099581
THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
FOR WOU2.
Watch 802 Status Report Messages:
STATUS REPORT #3 ON WW 802
VALID 040240Z - 040500Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 40 N ACT TO
20 ESE ACT.
WW 802 IS SCHEDULED TO EXPIRE AT 040500Z.
FOR ADDITIONAL INFORMATION SEE MESOSCALE DISCUSSION 2021
..GRAMS..08/04/08
ATTN...WFO...SHV...FWD...
&&
STATUS REPORT FOR WS 802
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
TXC217-309-040500-
TX
. TEXAS COUNTIES INCLUDED ARE
HILL MCLENNAN
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
STATUS REPORT #2 ON WW 802
VALID 040145Z - 040240Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
..GRAMS..08/04/08
ATTN...WFO...SHV...FWD...
&&
STATUS REPORT FOR WS 802
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
LAC013-015-017-027-031-061-081-111-119-040240-
LA
. LOUISIANA PARISHES INCLUDED ARE
BIENVILLE BOSSIER CADDO
CLAIBORNE DE SOTO LINCOLN
RED RIVER UNION WEBSTER
$$
TXC001-063-067-073-119-139-159-161-183-203-213-217-223-231-257-
289-293-309-315-343-347-349-365-379-401-419-423-449-459-467-499-
040240-
TX
. TEXAS COUNTIES INCLUDED ARE
ANDERSON CAMP CASS
CHEROKEE DELTA ELLIS
FRANKLIN FREESTONE GREGG
HARRISON HENDERSON HILL
HOPKINS HUNT KAUFMAN
LEON LIMESTONE MCLENNAN
MARION MORRIS NACOGDOCHES
NAVARRO PANOLA RAINS
RUSK SHELBY SMITH
TITUS UPSHUR VAN ZANDT
WOOD
$$
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.
$$
STATUS REPORT #1 ON WW 802
VALID 040040Z - 040140Z
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
..HURLBUT..08/04/08
ATTN...WFO...SHV...FWD...
&&
STATUS REPORT FOR WS 802
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
LAC013-015-017-027-031-061-081-111-119-040140-
LA
. LOUISIANA PARISHES INCLUDED ARE
BIENVILLE BOSSIER CADDO
CLAIBORNE DE SOTO LINCOLN
RED RIVER UNION WEBSTER
$$
TXC001-063-067-073-119-139-159-161-183-203-213-217-223-231-257-
289-293-309-315-343-347-349-365-379-401-419-423-449-459-467-499-
040140-
TX
. TEXAS COUNTIES INCLUDED ARE
ANDERSON CAMP CASS
CHEROKEE DELTA ELLIS
FRANKLIN FREESTONE GREGG
HARRISON HENDERSON HILL
HOPKINS HUNT KAUFMAN
LEON LIMESTONE MCLENNAN
MARION MORRIS NACOGDOCHES
NAVARRO PANOLA RAINS
RUSK SHELBY SMITH
TITUS UPSHUR VAN ZANDT
WOOD
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
Note:
Click for Complete Product Text.
Tornadoes
Probability of 2 or more tornadoes
|
Low (<5%)
|
Probability of 1 or more strong (F2-F5) tornadoes
|
Low (<2%)
|
Wind
Probability of 10 or more severe wind events
|
Mod (50%)
|
Probability of 1 or more wind events > 65 knots
|
Mod (30%)
|
Hail
Probability of 10 or more severe hail events
|
Low (20%)
|
Probability
of 1 or
more hailstones > 2 inches
|
Low (<5%)
|
Combined Severe Hail/Wind
Probability of 6 or more combined severe hail/wind events
|
High (80%)
|
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 
