Alert archive / Texas / Severe Thunderstorm Watches in 2002
Severe Thunderstorm Watch 4
The Storm Prediction Center issued this severe thunderstorm watch at Jan 23, 2002, 7:00 PM CST for 4 states. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- Jan 23, 2002, 7:00 PM CST (01:00 UTC)
- Expired
- Jan 24, 2002, 12:00 AM CST
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
All 35 counties
Hempstead County, AR, Howard County, AR, Lafayette County, AR, Little River County, AR, Miller County, AR, Pike County, AR, Sevier County, AR, Bossier Parish, LA, McCurtain County, OK, Bowie County, TX, Camp County, TX, Cass County, TX, Collin County, TX, Delta County, TX, Fannin County, TX, Franklin County, TX, Grayson County, TX, Gregg County, TX, Harrison County, TX, Henderson County, TX, Hopkins County, TX, Hunt County, TX, Kaufman County, TX, Lamar County, TX, Marion County, TX, Morris County, TX, Navarro County, TX, Rains County, TX, Red River County, TX, Rockwall County, TX, Smith County, TX, Titus County, TX, Upshur County, TX, Van Zandt County, TX, Wood County, TX
The nearest sounding before it
Fort Worth, TX (KFWD), launched 00:00Z, 1.0 hours before the alert went out and 180 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 1106 J/kg
- Mixed-layer CIN
- -12 J/kg
- Mixed-layer LCL
- 1003 m above ground
- 0-6 km bulk shear
- 66 kt
- 0-1 km storm-relative helicity
- 48 m²/s²
- 0-3 km storm-relative helicity
- 51 m²/s²
- Significant tornado parameter
- 0.3
- Supercell composite
- 1.7
The text
As transmitted, in the capitals the NWS used until 2016.
000 WWUS20 KWNS 240033 SEL4 SPC WW 240029 ARZ000-OKZ000-TXZ000-240600- URGENT - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WATCH NUMBER 4 STORM PREDICTION CENTER NORMAN OK 629 PM CST WED JAN 23 2002 THE STORM PREDICTION CENTER HAS ISSUED A SEVERE THUNDERSTORM WATCH FOR PORTIONS OF SOUTHWEST ARKANSAS SOUTHEAST OKLAHOMA NORTHEAST TEXAS EFFECTIVE THIS WEDNESDAY NIGHT AND THURSDAY MORNING FROM 700 PM UNTIL MIDNIGHT 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 60 STATUTE MILES NORTH AND SOUTH OF A LINE FROM 85 MILES WEST NORTHWEST OF TYLER TEXAS TO 30 MILES EAST NORTHEAST OF TEXARKANA ARKANSAS. 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 2...WW 3... DISCUSSION...THUNDERSTORMS ARE INCREASING ALONG THE COLD FRONT INTO NCENTRAL TX. 00Z SOUNDINGS INDICATE MODERATELY UNSTABLE AIR MASS AT FTW AND SHV WITH FAVORABLE DEEP LAYER SHEAR FOR SEVERE THUNDERSTORMS. WITH THE AVAILABLE AIR MASS ACROSS NERN TX...POTENTIAL WILL CONTINUE FOR SEVERE THUNDERSTORMS WITH AND AHEAD OF COLD FRONT. 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 24035. ...HALES 334,0964 342,0933 324,0933 315,0964 WWUS20 KWNS 240033 SEL4 SPC WW 240029 ARZ000-OKZ000-TXZ000-240600- URGENT - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WATCH NUMBER 4 STORM PREDICTION CENTER NORMAN OK 629 PM CST WED JAN 23 2002 THE STORM PREDICTION CENTER HAS ISSUED A SEVERE THUNDERSTORM WATCH FOR PORTIONS OF SOUTHWEST ARKANSAS SOUTHEAST OKLAHOMA NORTHEAST TEXAS EFFECTIVE THIS WEDNESDAY NIGHT AND THURSDAY MORNING FROM 700 PM UNTIL MIDNIGHT 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 60 STATUTE MILES NORTH AND SOUTH OF A LINE FROM 85 MILES WEST NORTHWEST OF TYLER TEXAS TO 30 MILES EAST NORTHEAST OF TEXARKANA ARKANSAS. 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 2...WW 3... DISCUSSION...THUNDERSTORMS ARE INCREASING ALONG THE COLD FRONT INTO NCENTRAL TX. 00Z SOUNDINGS INDICATE MODERATELY UNSTABLE AIR MASS AT FTW AND SHV WITH FAVORABLE DEEP LAYER SHEAR FOR SEVERE THUNDERSTORMS. WITH THE AVAILABLE AIR MASS ACROSS NERN TX...POTENTIAL WILL CONTINUE FOR SEVERE THUNDERSTORMS WITH AND AHEAD OF COLD FRONT. 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 24035. ...HALES 334,0964 342,0933 324,0933 315,0964
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 23, 9:30 PM CST | Tornado Watch | SPC | Clay, Cleburne, Craighead, Crittenden, Cross, Faulkner and 18 more | 6 hr |
Nearby
Severe Thunderstorm Watches in Texas, 2002Severe Thunderstorm Watches in Arkansas, 2002Severe Thunderstorm Watches in Louisiana, 2002Every severe thunderstorm watch in 2002
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive.