Alert archive / Texas / Severe Thunderstorm Watches in 2002
Severe Thunderstorm Watch 75
The Storm Prediction Center issued this severe thunderstorm watch at Apr 7, 2002, 8:00 PM CDT for 42 counties in Texas. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- Apr 7, 2002, 8:00 PM CDT (01:00 UTC)
- Expired
- Apr 8, 2002, 1:00 AM CDT
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
All 42 counties
Atascosa County, TX, Bastrop County, TX, Bell County, TX, Burleson County, TX, Caldwell County, TX, Collin County, TX, Comal County, TX, Dallas County, TX, Delta County, TX, Denton County, TX, DeWitt County, TX, Ellis County, TX, Falls County, TX, Fannin County, TX, Fayette County, TX, Freestone County, TX, Gonzales County, TX, Grayson County, TX, Guadalupe County, TX, Hays County, TX, Henderson County, TX, Hill County, TX, Hopkins County, TX, Hunt County, TX, Johnson County, TX, Karnes County, TX, Kaufman County, TX, Lamar County, TX, Lavaca County, TX, Lee County, TX, Limestone County, TX, McLennan County, TX, Milam County, TX, Navarro County, TX, Rains County, TX, Robertson County, TX, Rockwall County, TX, Tarrant County, TX, Travis County, TX, Van Zandt County, TX, Williamson County, TX, Wilson County, TX
Warnings issued inside it
18 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 7, 8:10 PM CDT | Flash Flood Warning | FWD | Dallas | 2 hr |
| Apr 7, 8:16 PM CDT | Severe Thunderstorm Warning | FWD | Bell | 59 min |
| Apr 7, 8:29 PM CDT | Severe Thunderstorm Warning | EWX | Hays | 46 min |
| Apr 7, 8:36 PM CDT | Severe Thunderstorm Warning | EWX | Comal | 24 min |
| Apr 7, 8:40 PM CDT | Tornado Warning | EWX | Atascosa | 65 min |
| Apr 7, 9:01 PM CDT | Severe Thunderstorm Warning | FWD | Falls | 44 min |
| Apr 7, 9:18 PM CDT | Tornado Warning | EWX | Wilson | 57 min |
| Apr 7, 9:38 PM CDT | Severe Thunderstorm Warning | FWD | Milam | 67 min |
| Apr 7, 10:09 PM CDT | Severe Thunderstorm Warning | FWD | Robertson | 51 min |
| Apr 7, 10:15 PM CDT | Severe Thunderstorm Warning | EWX | Wilson | 60 min |
| Apr 7, 10:43 PM CDT | Severe Thunderstorm Warning | HGX | Brazos, Burleson | 62 min |
| Apr 7, 10:55 PM CDT | Severe Thunderstorm Warning | EWX | Gonzales | 65 min |
| Apr 7, 11:07 PM CDT | Flash Flood Warning | EWX | Atascosa | 6 hr |
| Apr 7, 11:25 PM CDT | Flash Flood Warning | EWX | Wilson | 6 hr |
| Apr 7, 11:37 PM CDT | Severe Thunderstorm Warning | EWX | Atascosa | 38 min |
| Apr 8, 12:06 AM CDT | Severe Thunderstorm Warning | EWX | Wilson | 54 min |
| Apr 8, 12:13 AM CDT | Tornado Warning | EWX | Atascosa | 62 min |
| Apr 8, 1:00 AM CDT | Severe Thunderstorm Warning | EWX | Wilson | 45 min |
The nearest sounding before it
Fort Worth, TX (KFWD), launched 00:00Z, 1.0 hours before the alert went out and 220 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
- 1917 J/kg
- Mixed-layer CIN
- 0 J/kg
- Mixed-layer LCL
- 493 m above ground
- 0-6 km bulk shear
- 53 kt
- 0-1 km storm-relative helicity
- 257 m²/s²
- 0-3 km storm-relative helicity
- 271 m²/s²
- Significant tornado parameter
- 3.2
- Supercell composite
- 11.5
The text
As transmitted, in the capitals the NWS used until 2016.
000 WWUS20 KWNS 080036 SEL5 SPC WW 080032 TXZ000-080600- URGENT - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WATCH NUMBER 75 STORM PREDICTION CENTER NORMAN OK 732 PM CDT SUN APR 7 2002 THE STORM PREDICTION CENTER HAS ISSUED A SEVERE THUNDERSTORM WATCH FOR PORTIONS OF CENTRAL AND EASTERN TEXAS EFFECTIVE THIS SUNDAY NIGHT AND MONDAY MORNING FROM 800 PM UNTIL 100 AM 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 ALONG AND 50 STATUTE MILES EAST AND WEST OF A LINE FROM 50 MILES WEST OF VICTORIA TEXAS TO 40 MILES WEST NORTHWEST OF PARIS TEXAS. 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 73...WW 74... DISCUSSION...LINE OF STRONG/SEVERE STORMS CONTINUES TO TRACK EASTWARD ACROSS CENTRAL TX. STORMS HAVE EVOLVED INTO A LINEAR CONVECTIVE SYSTEM...WITH THE GREATEST THREAT NOW BEING DAMAGING WINDS AND LARGE HAIL. ISOLATED STORMS MAY MAINTAIN INTENSITY INTO EARLY MORNING HOURS. 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 27040. ...HART 285,0983 335,0965 335,0951 285,0965
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 7, 11:00 PM CDT | Severe Thunderstorm Watch | SPC | Angelina, Austin, Brazoria, Brazos, Colorado, Fort Bend and 14 more | 4 hr |
| Apr 8, 1:00 AM CDT | Severe Thunderstorm Watch | SPC | Aransas, Atascosa, Bee, Bexar, DeWitt, Frio and 12 more | 4 hr |
| Apr 8, 1:15 AM CDT | Severe Thunderstorm Watch | SPC | Chambers, Hardin, Jasper, Jefferson, Liberty, Newton and 4 more | 5 hr |
| Apr 8, 3:00 AM CDT | Severe Thunderstorm Watch | SPC | Austin, Brazoria, Calhoun, Colorado, Fort Bend, Galveston and 7 more | 5 hr |
Nearby
Severe Thunderstorm Watches in Texas, 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.