Alert archive / Texas / Flash Flood Warnings in 1990
Flash Flood Warning 29, NWS Fort Worth, TX
NWS Fort Worth, TX issued this flash flood warning at Mar 11, 1990, 7:48 AM CST for Collin County, Texas. It was in force for 117 min.
The area
The counties it named.
The facts
- Issued
- Mar 11, 1990, 7:48 AM CST (13:48 UTC)
- Expired
- Mar 11, 1990, 9:45 AM CST
- In force
- 117 min
- Issued by
- NWS Fort Worth, TX
- Area
- Whole counties
County Collin 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
Longview/Gregg, TX (KGGG), launched 12:00Z, 1.8 hours before the alert went out and 207 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
- 49 J/kg
- Mixed-layer CIN
- -73 J/kg
- Mixed-layer LCL
- 676 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- 209 m²/s²
- 0-3 km storm-relative helicity
- 292 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KFTW 111351 FFWFTW TXC085-113-439-111545- BULLETIN - EBS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE FORT WORTH TX 748 AM CST SUN MAR 11 1990 THE NATIONAL WEATHER SERVICE IN FORT WORTH HAS ISSUED A FLASH FLOOD WARNING EFFECTIVE UNTIL 945 AM CST FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN NORTH CENTRAL TEXAS ...COLLIN COUNTY...DALLAS COUNTY...TARRANT COUNTY AT 745 AM NATIONAL WEATHER SERVICE RADAR INDICATED A LARGE AREA OF RAIN AND EMBEDDED THUNDERSTORMS ACROSS TARRANT...COLLIN...AND NORTHWEST DALLAS COUNTIES. RAINFALL RATES OF 3 INCHES PER HOUR HAVE BEEN REPORTED. INDIVIDUAL STORMS WERE MOVING NORTHEAST AT 45 MPH...WHILE THE AREA HAS BEEN MOVING ONLY SLOWLY TO THE EAST. BEWARE OF RAPIDLY RISING WATER IN LOW-LYING AREAS...ESPECIALLY IN UNDERPASSES. DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS SAFELY. VEHICLES CAUGHT IN #RISING WATER SHOULD BE ABANDONED QUICKLY. MOVE TO HIGHER GROUND.
What forecasters said that day
The local office's own words before this flash flood 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 11, 3:16 AM CST, 4 hours 32 minutes before
TXZ031-111015- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE WACO TX 310 AM CST SUN MAR 11 1990 ...RAIN AND ISOLATED THUNDERSTORMS DEVELOPING OVER WESTERN PORTIONS OF CENTRAL TEXAS... AT 305 AM CST A DEVELOPING AREA OF RAIN...WITH ISOLATED THUNDERSTORMS... SOME WITH HEAVY RAIN...WAS NORTHWEST OF A LINE FROM JOHNSON CITY...TO TEMPLE...TO DALLAS. THIS AREA WAS OVER THE NORTHERN PORTIONS OF THE TEXAS HILL COUNTRY AND EXTENDED WEST TO SAN ANGELO AND NORTHWEST TO COMANCHE. THE THUNDERSTORMS WITH THE HEAVIER RAINSHOWERS WERE ALONG THE BOSQUE/ HAMILTON COUNTY LINE...WEST OF MERIDIAN. PERSONS IN WESTERN BOSQUE COUNTY SHOULD EXPECT BRIEF HEAVY RAINS...GUSTY WINDS...POSSIBLE SMALL HAIL AND FREQUENT LIGHTNING. THE SHOWERS AND HEAVIER RAINFALL WERE MOVING NORTHEAST ABOUT 35 MILES AN HOUR. STAY TUNED TO NOAA WEATHER RADIO FOR ADDITIONAL STATEMENTS. 07
Special weather statement, Mar 11, 4:47 AM CST, 3 hours 1 minute before
TXZ031-111145- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE WACO TX 445 AM CST SUN MAR 11 1990 ...FLASH FLOOD WATCH IN EFFECT FOR CENTRAL TEXAS... AT 440 AM CST A WIDESPREAD AREA OF LIGHT RAIN...WITH EMBEDDED SHOWERS AND THUNDERSTORMS...SOME WITH VERY HEAVY RAIN...WAS WEST OF A LINE FROM DALLAS...TO JONESBORO...TO JOHNSON CITY. ISOLATED HEAVY SHOWERS WERE OVER THE EXTREME NORTHERN PORTIONS OF BOSQUE COUNTY. ELSEWHERE...WIDELY SCATTERED SHOWERS AND PATCHES OF LIGHT RAIN WERE OVER CENTRAL TEXAS. CENTRAL TEXAS RESIDENTS ARE URGED TO STAY ABREAST OF THE WEATHER TODAY ...AS HEAVY RAINS ARE EXPECTED. DUE TO HEAVY RAINS OVER THE PAST FEW DAYS...THE GROUND IS SATURATED IN SOME AREAS...AND ADDITIONAL HEAVY RAINS WILL NOT SOAK IN AND WILL CAUSE RAPID RUNOFF AND FLOODING. REMEMBER...IT ONLY TAKES TWO FEET OF RUNNING WATER TO SWEEP A VEHICLE OFF ROADWAYS. DO NOT ATTEMPT TO CROSS MOVING WATER. DONT BECOME THE NEXT FATILITY. STAY TUNED TO NOAA WEATHER RADIO FOR ADDITIONAL STATEMENTS...OR WARNINGS SHOULD THE NEED ARISE. 07
Special weather statement, Mar 11, 4:57 AM CST, 2 hours 51 minutes before
TXZ019>032-1211000- SEVERE WEATHER OUTLOOK FOR NORTH TEXAS NATIONAL WEATHER SERVICE FORT WORTH TX 455 AM CST SUN MAR 11 1990 AN OUTBREAK OF SEVERE THUNDERSTORMS IS EXPECTED TODAY OVER PARTS OF NORTH TEXAS. LARGE HAIL...DAMAGING WINDS AND A FEW TORNADOES WILL BE POSSIBLE. LOCALLY HEAVY RAINFALL WILL ALSO BE A THREAT OVER THE CENTRAL AND WESTERN PARTS OF NORTH TEXAS. THE GREATEST THREAT OF SEVERE THUNDERSTORMS WILL BE OVER THE CENTRAL AND WESTERN PART NORTH CENTRAL TEXAS...WITH A LESSER RISK OVER EAST TEXAS. STRONG LOW LEVEL SOUTHERLY WINDS HAVE BROUGHT WARM AND MOIST AIR INTO NORTH TEXAS. MEANWHILE...A VIGOROUS UPPER AIR LOW PRESSURE TROUGH WILL BE MOVING ACROSS NORTHWEST TEXAS TODAY...RESULTING IN A VERTICAL WIND PROFILE FAVORABLE FOR SEVERE THUNDERSTORMS...AND TORNADOES. EARLY SUNDAY MORNING...WIDESPREAD SHOWERS AND THUNDERSTORMS WERE OCCURRING OVER MUCH OF THE WESTERN HALF OF NORTH TEXAS. STRONG THUNDERSTORMS WERE ALSO OCCURRING IN WEST TEXAS...AHEAD OF A DRYLINE...THAT WAS BEGINNING TO SURGE EASTWARD OUT OF NEW MEXICO. AS THE UPPER TROUGH...AND ASSOCIATED DRYLINE APPROACHES...SOME OF THUNDERSTORMS IN NORTH TEXAS ARE EXPECTED TO BECOME SEVERE LATER THIS MORNING...AND THROUGH THE AFTERNOON. AN INHIBITING FACTOR FOR SEVERE STORMS WAS THE PRESENCE OF WIDESPREAD CLOUD COVER OVER TEXAS. HOWEVER THIS MAY BE OVERCOME BY THE STRONG DYNAMICS ASSOCIATED WITH THE UPPER TROUGH...AND THE POSSIBILITY OF SURFACE HEATING WEST OF THE DRYLINE LATER TODAY. SPOTTERS IN THE CENTRAL AND WESTERN PARTS OF NORTH TEXAS CAN EXPECT ACTIVATION THROUGH THE DAY...WHILE THOSE IN THE EAST MAY REQUIRE ACTIVATION THIS AFTERNOON.
Special weather statement, Mar 11, 6:40 AM CST, 1 hour 8 minutes before
TXZ031-111340- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE WACO TX 383 AM CST SUN MAR 11 1990 ...FLASH FLOOD WATCH IN EFFECT FOR CENTRAL TEXAS... AT 626 AM CST A WIDESPREAD AREA OF LIGHT RAIN WAS WEST OF A LINE...FROM DALLAS...TO VALLEY MILLS...TO GEORGETOWN. ALSO...EMBEDDED THUNDERSTORMS ...SOME WITH VERY HEAVY RAIN...WERE NOW MOVING INTO THE NORTHERN PORTIONS OF CORYELL AND WESTERN BOSQUE COUNTIES. RESIDENTS IN CORYELL AND BOSQUE COUNTIES SHOULD EXPECT HEAVY RAINS... GUSTY WINDS...POSSIBLE SMALL HAIL...FREQUENT DANGEROUS LIGHTNING AND THE THREAT OF FLOODING. THESE STORMS HAVE PRODUCED OVER TWO INCHES BACK TO THE WEST AS THEY MOVED THROUGH ADJACENT COUNTIES. DO NOT ATTEMPT TO CROSS MOVING WATER. IF TRAVELING IS NECESSARY THIS MORNING BE PREPARED FOR REDUCED VISIBILITIES AND BE ESPECIALLY CAREFUL AT LOW WATER CROSSINGS AND KNOWN FLOOD PRONE AREAS. ELSEWHERE...SCATTERED PATCHES OF LIGHT RAIN WERE OVER CENTRAL TEXAS... HOWEVER...HEAVIER RAINFALL WILL BE SPREADING INTO THE CENTRAL TEXAS AREA DURING THE NEXT 1 TO 2 HOURS. STAY TUNED TO NOAA WEATHER RADIO FOR ADDITIONAL STATEMENTS...OR WARNINGS SHOULD THE NEED ARISE. 07
Special weather statement, Mar 11, 6:46 AM CST, 1 hour 2 minutes before
TXZ031-111340- SPECIAL WEATHER STATEMENT...CORRECTED TIME IN HEADER NATIONAL WEATHER SERVICE WACO TX 633 AM CST SUN MAR 11 1990 ...FLASH FLOOD WATCH IN EFFECT FOR CENTRAL TEXAS... AT 626 AM CST A WIDESPREAD AREA OF LIGHT RAIN WAS WEST OF A LINE...FROM DALLAS...TO VALLEY MILLS...TO GEORGETOWN. ALSO...EMBEDDED THUNDERSTORMS ...SOME WITH VERY HEAVY RAIN...WERE NOW MOVING INTO THE NORTHERN PORTIONS OF CORYELL AND WESTERN BOSQUE COUNTIES. RESIDENTS IN CORYELL AND BOSQUE COUNTIES SHOULD EXPECT HEAVY RAINS... GUSTY WINDS...POSSIBLE SMALL HAIL...FREQUENT DANGEROUS LIGHTNING AND THE THREAT OF FLOODING. THESE STORMS HAVE PRODUCED OVER TWO INCHES BACK TO THE WEST AS THEY MOVED THROUGH ADJACENT COUNTIES. DO NOT ATTEMPT TO CROSS MOVING WATER. IF TRAVELING IS NECESSARY THIS MORNING BE PREPARED FOR REDUCED VISIBILITIES AND BE ESPECIALLY CAREFUL AT LOW WATER CROSSINGS AND KNOWN FLOOD PRONE AREAS. ELSEWHERE...SCATTERED PATCHES OF LIGHT RAIN WERE OVER CENTRAL TEXAS... HOWEVER...HEAVIER RAINFALL WILL BE SPREADING INTO THE CENTRAL TEXAS AREA DURING THE NEXT 1 TO 2 HOURS. STAY TUNED TO NOAA WEATHER RADIO FOR ADDITIONAL STATEMENTS...OR WARNINGS SHOULD THE NEED ARISE. 07
The office that day
Everything else NWS Fort Worth, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 11, 6:25 AM CST | Flash Flood Warning | FWD | Hood, Parker, Tarrant | 2 hr |
| Mar 11, 6:41 AM CST | Flash Flood Warning | FWD | Denton | 2 hr |
| Mar 11, 7:15 AM CST | Severe Thunderstorm Warning | FWD | Hill | 60 min |
| Mar 11, 7:39 AM CST | Severe Thunderstorm Warning | FWD | Ellis, Johnson | 66 min |
| Mar 11, 7:48 AM CST | Flash Flood Warning | FWD | Dallas, Tarrant | 117 min |
| Mar 11, 8:42 AM CST | Flash Flood Warning | FWD | Denton | 4 hr |
| Mar 11, 8:47 AM CST | Severe Thunderstorm Warning | FWD | Dallas, Kaufman | 43 min |
| Mar 11, 9:22 AM CST | Flash Flood Warning | FWD | Cooke, Grayson | 3 hr |
| Mar 11, 9:47 AM CST | Flash Flood Warning | FWD | Archer | 3 hr |
| Mar 11, 11:04 AM CST | Severe Thunderstorm Warning | FWD | Eastland | 41 min |
| Mar 11, 12:09 PM CST | Flash Flood Warning | FWD | Montague | 3 hr |
| Mar 11, 1:07 PM CST | Severe Thunderstorm Warning | FWD | Comanche | 53 min |
| Mar 11, 2:54 PM CST | Flash Flood Warning | FWD | Hood, Parker | 4 hr |
| Mar 11, 2:54 PM CST | Flash Flood Warning | FWD | Denton, Tarrant | 4 hr |
| Mar 11, 3:32 PM CST | Severe Thunderstorm Warning | FWD | Comanche | 43 min |
| Mar 11, 3:57 PM CST | Severe Thunderstorm Warning | FWD | Erath, Hamilton | 63 min |
Nearby
Flash Flood Warnings in Texas, 1990Every flash flood 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.