Alert archive / Texas / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 87, NWS Fort Worth, TX
NWS Fort Worth, TX issued this severe thunderstorm warning at Apr 5, 1990, 5:08 PM CDT for Red River County, Texas. It was in force for 67 min. 3 reports came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Apr 5, 1990, 5:08 PM CDT (22:08 UTC)
- Expired
- Apr 5, 1990, 6:15 PM CDT
- In force
- 67 min
- Issued by
- NWS Fort Worth, TX
- Area
- Whole counties
County Red River County, TX
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Apr 5, 5:12 PM CDT | Hail 1.75 | Red River, TX | |
| Apr 5, 5:25 PM CDT | Thunderstorm Wind 0 | Red River, TX | |
| Apr 5, 5:47 PM CDT | Hail 1.75 | Red River, TX |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.
The nearest sounding before it
Longview/Gregg, TX (KGGG), launched 12:00Z, 10.1 hours before the alert went out and 147 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
- 137 J/kg
- Mixed-layer CIN
- -202 J/kg
- Mixed-layer LCL
- 1007 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 95 m²/s²
- 0-3 km storm-relative helicity
- 105 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, Apr 5, 11:34 AM CDT, 5 hours 34 minutes before
TXZ019>033-061200- SEVERE WEATHER OUTLOOK FOR NORTH TEXAS NATIONAL WEATHER SERVICE FORT WORTH TX 1130 AM CDT THU APR 5 1990 THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS OVER ALL OF NORTH TEXAS THIS AFTERNOON AND TONIGHT. SOME THUNDERSTORMS COULD PRODUCE LARGE HAIL...DAMAGING WINDS...AND AN ISOLATED TORNADO. A WELL DEFINED UPPER AIR DISTURBANCE...OVER WESTERN NEW MEXICO AT MID MORNING...WILL CONTINUE MOVING EASTWARD AND BY FRIDAY MORNING SHOULD BE OVER NORTH CENTRAL TEXAS. THIS UPPER AIR DISTURBANCE SHOULD INITIATE THUNDERSTORMS OVER WEST TEXAS THIS AFTERNOON. THESE THUNDERSTORMS WILL THEN MOVE INTO THE WESTERN PART OF NORTH TEXAS LATE THIS AFTERNOON AND TONIGHT. IN ADVANCE OF THE UPPER AIR DISTURBANCE...LOW LEVEL SOUTHERLY FLOW IS SLOWLY INCREASING OVER NORTH TEXAS...GRADUALLY INCREASING THE AMOUNT AND DEPTH OF THE MOISTURE. WITH AMPLE SUNSHINE WARMING THE AIR AND THE INCREASING MOISTURE...THE AIR MASS WILL CONTINUE TO DESTABILIZE. INSTABILITY INDICES...WHICH ARE A MEASURE OF ATMOSPHERIC INSTABILITY SHOULD REACH VALUES THIS AFTERNOON THAT EQUAL OR EXCEED THE THRESHHOLD FOR SEVERE THUNDERSTORMS...HENCE THE RISK OF SEVERE THUNDERSTORMS. THE LAST FEATURE SUPPORTING THUNDERSTORM DEVELOPMENT IN NORTH TEXAS IS A QUASISTATIONARY COLD FRONT ALONG THE RED RIVER. THIS FRONT IS EXPECTED TO MOVE LITTLE THIS AFTERNOON AND WILL SERVE AS A FOCUS FOR LOW LEVEL MOISTURE CONVERGENCE. FURTHER UPLIFT SUPPORT WILL OCCUR EARLY THIS EVENING WHEN A STRONG COLD FRONT MOVING ACROSS OKLAHOMA MERGES WITH THE RED RIVER FRONT. WITH THE PASSAGE OF THE COLD FRONT THROUGH NORTH TEXAS TONIGHT THE THREAT OF SEVERE THUNDERSTORMS SHOULD END. THE MOST LIKELY AREA FOR THUNDERSTORMS TO INITIALLY BECOME SEVERE THIS AFTERNOON IS IN THE SOUTHWESTERN QUARTER OF THE AREA...WHERE THE AIR MASS IS THE MOST UNSTABLE. FURTHER...THE PRESENCE OF MID LEVEL DRY AIR AND A VERY FAVORABLE VERTICAL WIND SHEAR WILL ASSIST THE THUNDERSTORMS MAY REACH SEVERE LIMITS. EMERGENCY MANAGEMENT OFFICIALS AND STORM SPOTTERS SHOULD BE ON AN INCREASED STATE OF READINESS...ESPECIALLY OVER THE WESTERN 1/2 OF NORTH TEXAS THIS AFTERNOON AND OVER ALL OF NORTH TEXAS TONIGHT.
Special weather statement, Apr 5, 11:42 AM CDT, 5 hours 26 minutes before
TXZ019>033-061200- SEVERE WEATHER OUTLOOK FOR NORTH TEXAS...CORRECTED NATIONAL WEATHER SERVICE FORT WORTH TX 1130 AM CDT THU APR 5 1990 ...PARA FIVE...LAST LINE...CHANGED ...MAY... TO READ ...TO... THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS OVER ALL OF NORTH TEXAS THIS AFTERNOON AND TONIGHT. SOME THUNDERSTORMS COULD PRODUCE LARGE HAIL...DAMAGING WINDS...AND AN ISOLATED TORNADO. A WELL DEFINED UPPER AIR DISTURBANCE...OVER WESTERN NEW MEXICO AT MID MORNING...WILL CONTINUE MOVING EASTWARD AND BY FRIDAY MORNING SHOULD BE OVER NORTH CENTRAL TEXAS. THIS UPPER AIR DISTURBANCE SHOULD INITIATE THUNDERSTORMS OVER WEST TEXAS THIS AFTERNOON. THESE THUNDERSTORMS WILL THEN MOVE INTO THE WESTERN PART OF NORTH TEXAS LATE THIS AFTERNOON AND TONIGHT. IN ADVANCE OF THE UPPER AIR DISTURBANCE...LOW LEVEL SOUTHERLY FLOW IS SLOWLY INCREASING OVER NORTH TEXAS...GRADUALLY INCREASING THE AMOUNT AND DEPTH OF THE MOISTURE. WITH AMPLE SUNSHINE WARMING THE AIR AND THE INCREASING MOISTURE...THE AIR MASS WILL CONTINUE TO DESTABILIZE. INSTABILITY INDICES...WHICH ARE A MEASURE OF ATMOSPHERIC INSTABILITY SHOULD REACH VALUES THIS AFTERNOON THAT EQUAL OR EXCEED THE THRESHHOLD FOR SEVERE THUNDERSTORMS...HENCE THE RISK OF SEVERE THUNDERSTORMS. THE LAST FEATURE SUPPORTING THUNDERSTORM DEVELOPMENT IN NORTH TEXAS IS A QUASISTATIONARY COLD FRONT ALONG THE RED RIVER. THIS FRONT IS EXPECTED TO MOVE LITTLE THIS AFTERNOON AND WILL SERVE AS A FOCUS FOR LOW LEVEL MOISTURE CONVERGENCE. FURTHER UPLIFT SUPPORT WILL OCCUR EARLY THIS EVENING WHEN A STRONG COLD FRONT MOVING ACROSS OKLAHOMA MERGES WITH THE RED RIVER FRONT. WITH THE PASSAGE OF THE COLD FRONT THROUGH NORTH TEXAS TONIGHT THE THREAT OF SEVERE THUNDERSTORMS SHOULD END. THE MOST LIKELY AREA FOR THUNDERSTORMS TO INITIALLY BECOME SEVERE THIS AFTERNOON IS IN THE SOUTHWESTERN QUARTER OF THE AREA...WHERE THE AIR MASS IS THE MOST UNSTABLE. FURTHER...THE PRESENCE OF MID LEVEL DRY AIR AND A VERY FAVORABLE VERTICAL WIND SHEAR WILL ASSIST THE THUNDERSTORMS TO REACH SEVERE LIMITS. EMERGENCY MANAGEMENT OFFICIALS AND STORM SPOTTERS SHOULD BE ON AN INCREASED STATE OF READINESS...ESPECIALLY OVER THE WESTERN 1/2 OF NORTH TEXAS THIS AFTERNOON AND OVER ALL OF NORTH TEXAS TONIGHT.
Special weather statement, Apr 5, 2:12 PM CDT, 2 hours 56 minutes before
TXZ021-022-052000- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE FORT WORTH TX 215 PM CDT THU APR 05 1990 AT 210 PM CDT...WEATHER SERVICE RADAR INDICATED AN INTENSE THUNDERSTORM OVER THE LAKE TEXOMA AREA. THIS THUNDERSTORM HAS CONTINUED TO INCREASE IN INTENSITY DURING THE PAST 15 MINUTES. IT IS CAPABLE OF PRODUCING LARGE HAIL AND HIGH WINDS. BOATERS AND CAMPERS IN THE LAKE TEXOMA AREA SHOULD TAKE PRECAUTIONARY ACTION IMMEDIATELY. THE THUNDERSTORM IS MOVING EASTNORTHEAST AT 20 MILES AN HOUR.
The office that day
Everything else NWS Fort Worth, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 5, 3:08 PM CDT | Severe Thunderstorm Warning | FWD | Fannin | 52 min |
| Apr 5, 3:29 PM CDT | Severe Thunderstorm Warning | FWD | Montague | 61 min |
| Apr 5, 3:54 PM CDT | Severe Thunderstorm Warning | FWD | Young | 66 min |
| Apr 5, 3:56 PM CDT | Severe Thunderstorm Warning | FWD | Cooke | 64 min |
| Apr 5, 4:12 PM CDT | Severe Thunderstorm Warning | FWD | Fannin | 48 min |
| Apr 5, 4:26 PM CDT | Severe Thunderstorm Warning | FWD | Grayson | 64 min |
| Apr 5, 4:26 PM CDT | Severe Thunderstorm Warning | FWD | Lamar | 64 min |
| Apr 5, 4:53 PM CDT | Tornado Warning | FWD | Young | 22 min |
| Apr 5, 4:53 PM CDT | Tornado Warning | FWD | Jack | 67 min |
| Apr 5, 5:01 PM CDT | Severe Thunderstorm Warning | FWD | Haskell | 44 min |
| Apr 5, 5:03 PM CDT | Severe Thunderstorm Warning | FWD | Cooke | 42 min |
| Apr 5, 5:17 PM CDT | Tornado Warning | FWD | Cooke, Grayson | 58 min |
| Apr 5, 5:24 PM CDT | Severe Thunderstorm Warning | FWD | Fisher, Jones, Stonewall | 66 min |
| Apr 5, 5:33 PM CDT | Tornado Warning | FWD | Cooke, Denton, Grayson | 57 min |
| Apr 5, 5:33 PM CDT | Tornado Warning | FWD | Fisher | 57 min |
| Apr 5, 5:42 PM CDT | Severe Thunderstorm Warning | FWD | Haskell, Throckmorton | 63 min |
| Apr 5, 5:47 PM CDT | Severe Thunderstorm Warning | FWD | Wise | 58 min |
| Apr 5, 6:08 PM CDT | Severe Thunderstorm Warning | FWD | Young | 67 min |
| Apr 5, 6:17 PM CDT | Severe Thunderstorm Warning | FWD | Fannin, Grayson | 58 min |
| Apr 5, 6:17 PM CDT | Severe Thunderstorm Warning | FWD | Jones | 58 min |
| Apr 5, 6:19 PM CDT | Tornado Warning | FWD | Young | 56 min |
| Apr 5, 6:42 PM CDT | Tornado Warning | FWD | Jones, Taylor | 63 min |
| Apr 5, 6:56 PM CDT | Severe Thunderstorm Warning | FWD | Palo Pinto | 64 min |
| Apr 5, 6:56 PM CDT | Severe Thunderstorm Warning | FWD | Shackelford | 64 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.