Alert archive / Texas / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 37, NWS Fort Worth, TX
NWS Fort Worth, TX issued this severe thunderstorm warning at Mar 7, 1990, 12:21 PM CST for McLennan County, Texas. It was in force for 69 min.
The area
The counties it named.
The facts
- Issued
- Mar 7, 1990, 12:21 PM CST (18:21 UTC)
- Expired
- Mar 7, 1990, 1:30 PM CST
- In force
- 69 min
- Issued by
- NWS Fort Worth, TX
- Area
- Whole counties
County McLennan County, TX
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
The nearest sounding before it
Stephenville/Cla, TX (KSEP), launched 12:00Z, 6.4 hours before the alert went out and 113 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1473 m above ground
- 0-6 km bulk shear
- 69 kt
- 0-1 km storm-relative helicity
- -19 m²/s²
- 0-3 km storm-relative helicity
- 163 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.4
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
In the hours before
Special weather statement, Mar 7, 9:04 AM CST, 3 hours 17 minutes before
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</html>Special weather statement, Mar 7, 9:38 AM CST, 2 hours 43 minutes before
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</html>Special weather statement, Mar 7, 10:17 AM CST, 2 hours 4 minutes before
TXZ031-037-071617 URBAN AND SMALL STREAM FLOOD STATEMENT NATIONAL WEATHER SERVICE WACO TX 1015 AM CST WED MAR 7 1990 ...OCCASIONAL HEAVY RAINS COVERING CENTRAL TEXAS... THUNDERSTORMS AND SHOWERS...WITH OCCASIONAL HEAVY RAIN...COVERED MOST OF CENTRAL TEXAS. INDIVIDUAL SHOWERS WERE MOVING NORTHEAST 40 MPH...WITH THE AREA DRIFTING TO THE EAST NEAR 30 MPH. PERSONS THROUGH CENTRAL TEXAS SHOULD USE CAUTION DUE TO FLOODING OF ROADWAY..LOW LYING..FLOOD PRONE AREAS. BE SUSPICIOUS OF ANY WATER OVER ROADWAYS. STAY TUNED TO RADIO..TV OR NOAA WEATHER RADIO FOR FURTHER STATEMENTS.
Special weather statement, Mar 7, 11:16 AM CST, 1 hour 5 minutes before
TXZ021>023-026>028-031>033-072200- SEVERE WEATHER POTENTIAL STATEMENT NATIONAL WEATHER SERVICE FORT WORTH TX 1115 AM CST WED MAR 7 1990 THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS OVER THE SOUTH CENTRAL...EAST...AND NORTHEAST PARTS OF NORTH TEXAS THIS AFTERNOON. THE AREA IS GENERALLY SOUTHEAST OF A LINE THROUGH TEXARKANA... SULPHUR SPRINGS...WAXAHACHIE...HILLSBORO AND LAMPASAS. THIS INCLUDES THE CITIES OF TYLER...LONGVIEW...LUFKIN...AND WACO. THUNDERSTORMS WERE CONTINUING AT MIDDAY ALONG A RAIN-COOLED BOUNDARY THAT STRETCHED FROM SHREVEPORT TO LONGVIEW TO PALESTINE TO TEMPLE. THIS RAIN-COOLED AREA WAS CAUSED BY THUNDERSTORMS LAST NIGHT... AND REPRESENTED THE BEST AREA FOR SEVERE THUNDERSTORMS TO DEVELOP THIS AFTERNOON. THAT'S BECAUSE THIS AREA MARKED THE EDGE OF STRONG LOW LEVEL CONVERGENCE... GOOD TURNING OF THE LOW LEVEL WINDS...AND BEST INSTABILITES... ALL INGREDIANTS FOR SEVERE THUNDERSTORMS. ON THE LARGER SCALE... AN UPPER LEVEL LOW PRESSURE AREA OVER WESTERN COLORADO AND EASTERN KANSAS THIS MORNING WAS WEAKENING AS IT MOVED NORTHEAST. ENERGY ASSOCIATED WITH THE SUBTROPICAL JET STREAM...HOWEVER...WAS FOCUSED OVER THE THUNDERSTORMS IN CENTRAL AND NORTHEAST TEXAS AND WAS CONTRIBUTING TO THUNDERSTORM STRENGTH. THUS THIS AREA IS THE FOCUS FOR SEVERE WEATHER THIS AFTERNOON. THUNDERSTORMS ARE ALSO POSSIBLE TODAY ALONG THE DRY LINE WHICH WAS LOCATED FROM GAINESVILLE...TO MINERAL WELLS TO LAMPASAS AT MIDDAY. BUT BECAUSE THESE THUNDERSTORMS WERE DEEPER IN THE RAIN COOLED AIR AND THUS CUT OFF SOMEWHAT FROM THE BEST LOW LEVEL FORCING... THEY WERE NOT EXPECTED TO BECOME AS INTENSE AS THE THUNDERSTORMS DEVELOPING ALONG A WACO-TYLER LINE. HEAVY RAINS ARE ALSO A POSSIBILITY... AND A FLASH FLOOD WATCH REMAINED IN EFFECT FOR TODAY FOR MOST OF NORTH CENTRAL AND NORTHEAST TEXAS FOR TODAY. EMERGENCY MANAGEMENT OFFICIALS AND SPOTTERS WILL WANT TO KEEP IN TOUCH WITH LATEST WEATHER DEVELOPMENTS TODAY. ACTIVATION CAN BE EXPECTED ANY TIME...BUT THE BEST CHANCES FOR SEVERE WEATHER WILL EXIST THIS AFTERNOON...WHEN DAYTIME HEATING IS AT A MAXIMUM. THUNDERSTORMS WILL GRADUALLY MOVE EAST TONIGHT...DIMINISHING OVER CENTRAL PORTIONS BUT CONTINUING OVER SOUTHEAST PORTIONS OF NORTH TEXAS ON TONIGHT. THUNDERSTORMS ARE EXPECTED OVER NORTHEAST TEXAS ON THURSDAY...BUT ARE NOT EXPECTED REACH SEVERE LEVELS.
Special weather statement, Mar 7, 11:44 AM CST, 37 minutes before
TXZ031-037-071845- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE WACO TX 1143 AM CST WED MAR 7 1990 ...A FLASH FLOOD WATCH IS IN EFFECT THIS AFTERNOON FOR CENTRAL TEXAS... AT 1135 AM CST A STRONG THUNDERSTORM WITH HEAVY RAIN WAS LOCATED 10 MILES WEST OF GATESVILLE...MOVING NORTHEAST 40 MPH. OTHERWISE...SHOWERS AND THUNDERSTORMS COVERED MOST OF CENTRAL TEXAS ...MOVING EAST 30 MILES AN HOUR...WITH INDIVIDUAL SHOWERS MOVING NORTHEAST 40 MILES AN HOUR. PERSONS LIVING IN AND MOTORIST DRIVING THROUGH SHOULD BE EXTREMELY CAUTIOUS TO POSSIBLE FLOODING OF LOW LYING..FLOOD PRONE AREA. WACO HAS ALREADY RECEIVED 2.88 INCHES OF RAIN SINCE MIDNIGHT...WITH OTHER AREAS AROUND CENTRAL TEXAS REPORTING UP TO 4.00 INCHES. STAY TUNED TO RADIO..TV OR NOAA WEATHER RADIO FOR FURTHER STATEMENTS OR ADVISORIES.
The office that day
Everything else NWS Fort Worth, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 6, 6:00 PM CST | Severe Thunderstorm Warning | FWD | Shackelford | 60 min |
| Mar 6, 6:05 PM CST | Severe Thunderstorm Warning | FWD | Young | 50 min |
| Mar 6, 6:11 PM CST | Severe Thunderstorm Warning | FWD | Stephens | 49 min |
| Mar 6, 7:53 PM CST | Severe Thunderstorm Warning | FWD | Young | 67 min |
| Mar 6, 8:06 PM CST | Severe Thunderstorm Warning | FWD | Jack | 69 min |
| Mar 6, 8:47 PM CST | Flash Flood Warning | FWD | Jack, Young | 118 min |
| Mar 7, 2:00 AM CST | Flash Flood Warning | FWD | Parker | 4 hr |
| Mar 7, 4:27 AM CST | Tornado Warning | FWD | Hamilton | 48 min |
| Mar 7, 6:10 AM CST | Flash Flood Warning | FWD | Bosque, Hill, McLennan | 2 hr |
| Mar 7, 8:47 AM CST | Severe Thunderstorm Warning | FWD | Coryell | 58 min |
| Mar 7, 12:53 PM CST | Severe Thunderstorm Warning | FWD | Bosque, Hill | 67 min |
| Mar 7, 3:32 PM CST | Severe Thunderstorm Warning | FWD | Rains, Wood | 43 min |
| Mar 7, 3:50 PM CST | Severe Thunderstorm Warning | FWD | Franklin, Hopkins | 40 min |
| Mar 7, 4:24 PM CST | Severe Thunderstorm Warning | FWD | Titus | 56 min |
Nearby
Severe Thunderstorm Warnings in Texas, 1990Every severe thunderstorm warning in 1990
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.