Alert archive / Texas / Tornado Watches in 2002
Tornado Watch 57
The Storm Prediction Center issued this tornado watch at Mar 30, 2002, 12:30 PM CST for 24 counties in Texas. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Mar 30, 2002, 12:30 PM CST (18:30 UTC)
- Expired
- Mar 30, 2002, 6:00 PM CST
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
All 24 counties
Angelina County, TX, Brazos County, TX, Burleson County, TX, Falls County, TX, Grimes County, TX, Hardin County, TX, Houston County, TX, Jasper County, TX, Lee County, TX, Leon County, TX, Liberty County, TX, Limestone County, TX, Madison County, TX, Milam County, TX, Montgomery County, TX, Polk County, TX, Robertson County, TX, Sabine County, TX, San Augustine County, TX, San Jacinto County, TX, Trinity County, TX, Tyler County, TX, Walker County, TX, Washington County, TX
Warnings issued inside it
5 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 30, 1:13 PM CST | Severe Thunderstorm Warning | FWD | Limestone | 62 min |
| Mar 30, 1:18 PM CST | Tornado Warning | FWD | Limestone | 42 min |
| Mar 30, 2:12 PM CST | Severe Thunderstorm Warning | FWD | Robertson | 63 min |
| Mar 30, 2:33 PM CST | Severe Thunderstorm Warning | FWD | Leon | 57 min |
| Mar 30, 5:11 PM CST | Severe Thunderstorm Warning | HGX | Montgomery | 34 min |
The nearest sounding before it
Fort Worth, TX (KFWD), launched 12:00Z, 6.5 hours before the alert went out and 245 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
- 17 J/kg
- Mixed-layer CIN
- -107 J/kg
- Mixed-layer LCL
- 976 m above ground
- 0-6 km bulk shear
- 47 kt
- 0-1 km storm-relative helicity
- 80 m²/s²
- 0-3 km storm-relative helicity
- 148 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WWUS20 KWNS 301811 SEL7 SPC WW 301807 TXZ000-310000- URGENT - IMMEDIATE BROADCAST REQUESTED TORNADO WATCH NUMBER 57 STORM PREDICTION CENTER NORMAN OK 1207 PM CST SAT MAR 30 2002 THE STORM PREDICTION CENTER HAS ISSUED A TORNADO WATCH FOR PORTIONS OF CENTRAL AND EAST TEXAS EFFECTIVE THIS SATURDAY AFTERNOON AND EVENING FROM 1230 PM UNTIL 600 PM CST. TORNADOES...HAIL TO 3 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS. THE TORNADO WATCH AREA IS ALONG AND 50 STATUTE MILES NORTH AND SOUTH OF A LINE FROM 50 MILES WEST NORTHWEST OF COLLEGE STATION TEXAS TO 60 MILES EAST SOUTHEAST OF LUFKIN TEXAS. REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR TORNADOES AND 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. DISCUSSION...THUNDERSTORMS NOW ACROSS CENTRAL TX WILL INTENSIFY AND MOVE NEWD...WHILE ADDITIONAL STORMS DEVELOP EWD DURING THE AFTERNOON IN ADVANCE OF THE MID LEVEL LOW OVER W TX. AN AREA OF BACKED LOW-LEVEL WINDS BETWEEN ABOUT I-10 AND I-20 IS CO-LOCATED WITH THE AXIS OF STRONGEST INSTABILITY AND GREATEST LOW-LEVEL DEW POINTS...WHICH WILL SUPPORT A THREAT OF SUPERCELLS WITH LARGE HAIL/DAMAGING WINDS AND A FEW TORNADOES. AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT TO 3 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM MOTION VECTOR 23035. ...THOMPSON 313,0970 313,0934 301,0934 300,0970
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 29, 7:30 PM CST | Severe Thunderstorm Watch | SPC | Borden, Coke, Crockett, Fisher, Glasscock, Howard and 7 more | 6 hr |
| Mar 29, 11:30 PM CST | Severe Thunderstorm Watch | SPC | Brown, Callahan, Coke, Coleman, Collin, Comanche and 25 more | 6 hr |
| Mar 30, 3:00 AM CST | Severe Thunderstorm Watch | SPC | Anderson, Bell, Bosque, Bowie, Camp, Collin and 39 more | 5 hr |
| Mar 30, 5:30 AM CST | Severe Thunderstorm Watch | SPC | Atascosa, Bandera, Bexar, Brown, Callahan, Coke and 24 more | 6 hr |
| Mar 30, 1:00 PM CST | Tornado Watch | SPC | Anderson, Bosque, Camp, Cherokee, Comanche, Dallas and 28 more | 5 hr |
| Mar 30, 3:45 PM CST | Severe Thunderstorm Watch | SPC | Aransas, Austin, Brazoria, Calhoun, Colorado, Fort Bend and 8 more | 5 hr |
| Mar 30, 5:30 PM CST | Tornado Watch | SPC | Anderson, Angelina, Cherokee, Gregg, Grimes, Hardin and 22 more | 6 hr |
Nearby
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.