Alert archive / Texas / Flash Flood Warnings in 1986
Flash Flood Warning 12, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this flash flood warning at May 25, 1986, 4:28 PM CDT for Bexar County, Texas. It was in force for 4 hr.
The area
The counties it named.
The facts
- Issued
- May 25, 1986, 4:28 PM CDT (21:28 UTC)
- Expired
- May 25, 1986, 8:30 PM CDT
- In force
- 4 hr
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Whole counties
County Bexar 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
Victoria Regiona, TX (KVCT), launched 12:00Z, 9.5 hours before the alert went out and 171 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
- 2210 J/kg
- Mixed-layer CIN
- -6 J/kg
- Mixed-layer LCL
- 557 m above ground
- 0-6 km bulk shear
- 21 kt
- 0-1 km storm-relative helicity
- 3 m²/s²
- 0-3 km storm-relative helicity
- 72 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 0.9
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KSAT 252128 FFWSAT TXC029-260130- BULLETIN - IMMEDIATE BROADCAST REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE SAN ANTONIO TX 428 PM CDT SUN MAY 25 1986 THE NATIONAL WEATHER SERVICE HAS ISSUED A FLASH FLOOD WARNING EFFECTIVE UNTIL 830 PM CDT FOR PEOPLE IN THE FOLLOWING COUNTY OF SOUTH CENTRAL TEXAS...BEXAR AT 415 PM CDT STRONG THUNDERSTORMS WERE INDICATED BY RADAR OVER NORTHWEST BEXAR COUNTY THESE THUNDERSTORMS HAVE PRODUCED OVER 3 INCHES OF RAIN WITH THE LAST HOUR. A FLASH FLOOD WARNING MEANS FLOODING IS IMMINENT OR HAS BEEN REPORTED. TAKE NECESSARY PRECAUTIONS AS REQUIRED TO PROTECT LIFE AND PROPERTY. REMEMBER..DEATHS DURING FLASH FLOODING ARE FREQUENTLY RELATED TO MOTORISTS DRIVING INTO FLOODED LOW WATER CROSSINGS. IF THREATENING WEATHER APPROACHES..YOU SHOULD GO TO A SAFE PLACE IMMEDIATELY. YOU SHOULD ASK THE NEAREST LAW ENFORCEMENT AGENCY TO RELAY YOUR SEVERE WEATHER REPORTS TO THE LOCAL NATIONAL WEATHER SERVICE OFFICE. PLEASE LISTEN TO YOUR LOCAL RADIO..TV OR NOAA WEATHER RADIO STATION FOR LATER STATEMENTS OR WARNINGS REGARDING THIS HEAVY RAIN EVENT.
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, May 25, 10:43 AM CDT, 5 hours 45 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SAN ANTONIO TX 11 AM CDT SUN MAY 25 1986 ...SEVERE THUNDERSTORMS AND HEAVY RAIN POSSIBLE IN THE TEXAS HILL COUNTRY AND ADJOINING AREAS THIS AFTERNOON AND TONIGHT... CONDITIONS IN THE ATMOSPHERE ARE FAVORABLE FOR THE FORMATION OF SEVERE THUNDERSTORMS AND HEAVY RAIN THIS AFTERNOON AND TONIGHT IN THE TEXAS HILL COUNTRY AND ADJOINING AREAS. DEEP GULF MOISTURE..WHICH HAS MOVED OVER THE AREA..AND A DISTURBANCE IN THE UPPER ATMOSPHERE ARE EXPECTED TO CAUSE THE STRONG THUNDERSTORMS LATE TODAY. SKIES OVER THE HILL COUNTRY WILL BE PARTLY CLOUDY DURING THE AFTERNOON WITH TEMPERATURES CLIMBING INTO THE MID TO UPPER 80S. HOWEVER..THE THUNDERSTORMS WILL BEGIN TO FORM BY LATE AFTERNOON AND CONTINUE INTO THE NIGHT HOURS. ANYONE PLANING ON PICNICING..CAMPING..BOATING OR ANY ACTIVITY IN THE TEXAS HILL COUNTRY AND ADJACENT AREAS THIS AFTERNOON OR TONIGHT SHOULD BE ALERT FOR THE FORMATION OF STRONG THUNDERSTORMS. IF POSSIBLE.. MONITOR RADIO OR TELEVISION. IF THUNDERSTORMS BEGIN TO FORM IN YOUR AREA SEEK SAFETY IMMEDIATELY. THE THUNDERSTORMS LIKELY CONTAIN STRONG GUSTY WINDS WHICH COULD CAPSIZE BOATS. VERY HEAVY RAINS WILL ACCOMPANY THE THUNDERSTORMS AND COULD CAUSE FLASH FLOODS ON SMALL STREAMS. IF WEATHER CONDITIONS CONTINUE TO DEVELOP..FLASH FLOOD AND SEVERE THUNDERSTORM WATCHES MAY BE REQUIRED LATER TODAY FOR THE TEXAS HILL COUNTRY AND ADJOINING AREAS.
Special weather statement, May 25, 11:58 AM CDT, 4 hours 30 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DEL RIO TX 1158 AM CDT SUN MAY 25 1986 ...THUNDERSTORMS HAVE STARTED TO DEVELOPE IN NORTHERN VAL VERDE COUNTY... THUNDERSTORMS AND SHOWERS HAVE DEVELOPED FROM NORTH OF JUNO TO NORTH OF SONORA TEXAS. MOVEMENT WAS TO THE SOUTHEAST AT 15 MPH. STRONG THUNDERSTORMS EARLIER THIS MORNING DUMPED HEAVY RAINS IN THE JUNO AREA..ALONG THE DEVILS RIVER. THE DEVILS RIVER PEAKED AT 7.6 FEET AT BAKERS CROSSING. THIS IS SLIGHTLY OVER THE BRIDGE ON HIGHWAY 163..12 MILES SOUTH OF JUNO. TRAFFIC IS STILL PASSABLE AND RIVER LEVEL SHOULD BE ON THE WAY DOWN. HOWEVER MORE HEAVY RAINFALL IS EXPECTED THIS AFTERNOON AND TONIGHT. BOATERS ON THE RIVERS AND LAKE AMISTAD SHOULD HAVE A PLANNED SAVE HARBOR AS THUNDERSTORMS THIS AFTERNOON AND TONIGHT WILL LIKELY PRODUCE STRONG GUSTY WINDS WHICH CAN CAPSIZE YOUR BOAT. RECREATIONERS IN THE NORTHERN HALF OF VAL VERDE COUNTY..ESPECIALLY JUNO AREA..SOUTH TO COMSTOCK..AND ALONG THE DEVILS RIVER SHOULD LISTEN TO LOCAL RADIO STATIONS AND NATIONAL WEATHER SERVICE RADIO FOR FUTHER STATEMENTS. PERSONS PLANNING TO TRAVEL NORTHWARD FROM DEL RIO TONIGHT SHOULD LISTEN TO LOCAL RADIO STATIONS IN 7CASE THERE PLANNED ROUTES HAVE BEEN CLOSED DUE TO HEAVY RAINFALL OR FLOODED LOW WATER CROSSINGS ALONG THEIR ROUTE BEFORE LEAVING THE DEL RIO AREA.
Special weather statement, May 25, 1:52 PM CDT, 2 hours 36 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SAN ANTONIO TX 145 PM CDT SUN MAY 25 1986 ...THUNDERSTORMS DEVELOPING ACROSS THE TEXAS HILL COUNTRY AND IN PARTS OF SOUTH CENTRAL TEXAS THIS AFTERNOON... DURING THE PAST HOUR..NATIONAL WEATHER SERVICE RADARS HAVE BEEN PICKING UP DEVELOPING THUNDERSTORMS ACROSS THE HILL COUNTRY FROM ROCKSPRINGS TO JUNCTION..AND NEAR CANYON LAKE..JUST NORTH OF SAN ANTONIO. REPORTS FROM NEAR CANYON LAKE INDICATED WINDS GUSTING TO 45 MILES AN HOUR. ADDITIONAL SHOWERS WERE INDICATED FROM BASTROP TO CORPUS CHRISTI AND VICTORIA. CONDITIONS IN THE ATMOSPHERE ARE FAVORABLE FOR THE FORMATION OF SEVERE THUNDERSTORMS AND HEAVY RAIN THIS AFTERNOON AND TONIGHT IN THE TEXAS HILL COUNTRY AND ADJOINING AREAS. DEEP GULF MOISTURE..WHICH HAS MOVED OVER THE AREA..AND A DISTURBANCE IN THE UPPER ATMOSPHERE ARE EXPECTED TO CAUSE THE STRONG THUNDERSTORMS TO DEVELOP LATE TODAY. SKIES OVER THE HILL COUNTRY AND AROUND SOUTH CENTRAL TEXAS ARE PARTLY CLOUDY THIS AFTERNOON. WITH THE TEMPERATURE RISING INTO THE MID AND UPPER 80S..RAPID DEVELOPMENT CAN BE EXPECTED. PLEASE MONITOR RADIO TV OR NOAA WEATHER RADIO FOR LATER STATEMENTS. THE THUNDERSTORMS WILL LIKELY CONTAIN STRONG GUSTY WINDS WHICH COULD CAPSIZE BOATS. VERY HEAVY RAINS WILL ACCOMPANY THE THUNDERSTORMS AND COULD CAUSE FLASH FLOODS ON SMALL STREAMS. IF WEATHER CONDITIONS CONTINUE TO DEVELOP..FLASH FLOOD AND SEVERE THUNDERSTORM WATCHES MAY BE REQUIRED LATER TODAY FOR THE TEXAS HILL COUNTRY AND ADJOINING AREAS.
Special weather statement, May 25, 3:55 PM CDT, 33 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE SAN ANTONIO TX 355 PM CDT SUN MAY 25 1986 ...STRONG THUNDERSTORMS MOVING INTO WESTERN BEXAR COUNTY... HONDO RADAR INDICATES STRONG THUNDERSTORMS MOVING INTO WESTERN BEXAR COUNTY. THESE THUNDERSTORMS ARE MOVING TO THE EAST AT 10 MILES. AT THIS RATE OF MOVEMENT..THUNDERSTORMS WILL BE OVER MUCH OF THE CITY OF SAN ANTONIO WITHIN THE HOUR. FREQUENT LIGHTNING..STRONG GUSTY WINDS..POSSIBLE HAIL AND VERY HEAVY RAINFALL CAN BE EXPECTED WITH THESE STORMS. MUCH OF SOUTH TEXAS..INCLUDING BEXAR COUNTY..IS UNDER A FLASH FLOOD WATCH. THIS MEANS THAT CONDITIONS ARE FAVORABLE FOR FLASH FLOODING. HEAVY RAINFALL CAN FLOOD UNDERPASSES..LOW WATER CROSSINGS AND OTHER FLOOD PRONE AREAS. THEREFORE MOTORISTS ESPECIALLY ARE ADVISED TO EXERCISE CAUTION SHOULD DRIVING BE NECESSARY THIS AFTERNOON AND TONIGHT. STAY TUNED TO YOUR LOCAL RADIO..TV..OR NOAA WEATHER RADIO FOR OTHER STATEMENTS OR WARNIsNGS WHICH WILL BE ISSUED AS NEEDED.
The office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 24, 8:20 PM CDT | Severe Thunderstorm Warning | EWX | Lampasas, Mills | 55 min |
| May 25, 5:55 AM CDT | Severe Thunderstorm Warning | EWX | Val Verde | 60 min |
| May 25, 6:50 AM CDT | Severe Thunderstorm Warning | EWX | Val Verde | 60 min |
| May 25, 6:11 PM CDT | Tornado Warning | EWX | Goliad | 64 min |
Nearby
Flash Flood Warnings in Texas, 1986Every flash flood warning in 1986
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.