Alert archive / Texas / Flash Flood Warnings in 1999
Flash Flood Warning 51, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this flash flood warning at Jun 15, 1999, 10:40 PM CDT for Bexar County, Medina County, Texas. It was in force for 80 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Jun 15, 1999, 10:40 PM CDT (03:40 UTC)
- Expired
- Jun 16, 1999, 12:00 AM CDT
- In force
- 80 min
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Whole counties
Counties Bexar County, TX, Medina County, TX
The nearest sounding before it
Del Rio, TX (KDRT), launched 00:00Z, 3.7 hours before the alert went out and 196 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
- 1202 J/kg
- Mixed-layer CIN
- -1 J/kg
- Mixed-layer LCL
- 925 m above ground
- 0-6 km bulk shear
- 22 kt
- 0-1 km storm-relative helicity
- -26 m²/s²
- 0-3 km storm-relative helicity
- -5 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.7
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KEWX 160343 FFWSAT TXC029-325-160500- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 1040 PM CDT TUE JUN 15 1999 THE NATIONAL WEATHER SERVICE IN AUSTIN/SAN ANTONIO HAS ISSUED A * FLASH FLOOD WARNING FOR THE FOLLOWING... BEXAR COUNTY IN TEXAS MEDINA COUNTY IN TEXAS * UNTIL MIDNIGHT CDT * MODERATE TO HEAVY RAINS OF ONE TO TWO INCHES PER HOUR CONTINUE OVER WEST BEXAR COUNTY GENERALLY ALONG AND WEST OF LOOP 410 BETWEEN HIGHWAY 16 AND I35 WITH THE HEAVIEST RAIN WEST OF 1604 AND DEVELOPING INTO SOUTHEAST MEDINA COUNTY BETWEEN DEVINE AND HONDO. THE SHOWERS HAVE REMAINED ANCHORED OVER WESTERN BEXAR COUNTY FOR THE PAST FEW HOURS DROPPING ISOLATED TOTALS OF 3 TO 4 INCHES OR MORE NEAR 1604 AND 471 SINCE ABOUT 9 PM. THE HEAVY RAIN WILL SLOWLY END OVER BEXAR COUNTY WITH HEAVIEST RAINS MOVING INTO MEDINA COUNTY OVER THE NEXT HOUR. EXCESSIVE RUNOFF FROM THESE STORMS WILL CAUSE FLASH FLOODING OF SMALL CREEKS AND STREAMS...LOW WATER CROSSINGS AND UNDERPASSES. ADDITIONALLY...COUNTRY ROADS AND FARMLANDS ALONG THE BANKS OF CREEKS AND STREAMS AND OTHER LOW LYING AREAS ARE SUBJECT TO FLASH FLOODING. BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE DANGERS OF FLOODS AND FLASH FLOODS. IF FLASH FLOODING IS OBSERVED ACT QUICKLY. MOVE UP TO HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING. A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING. IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY. RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO CROSS SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR BY AUTOMOBILE. IF YOUR VEHICLE STALLS, ABANDON IT IMMEDIATELY AND SEEK 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, Jun 15, 6:00 PM CDT, 4 hours 40 minutes before
TXZ171>173-183>194-202>209-217>225-228-161100- HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 600 PM CDT TUE JUN 15 1999 WIDELY SCATTERED SHOWERS AND THUNDERSTORMS WILL CONTINUE TONIGHT AND WEDNESDAY OVER THE TEXAS HILL COUNTRY AND SOUTH CENTRAL TEXAS. BRIEF HEAVY RAINS...GUSTY WINDS AT 20 TO 40 MPH...AND OCCASIONAL DEADLY LIGHTNING IS POSSIBLE. SPOTTY RAIN AMOUNTS OF LESS THAN A ONE-HALF INCH ARE POSSIBLE WITH ISOLATED AMOUNTS OF ONE TO TWO INCHES IN THE HEAVIER STORMS. THE HAZARDOUS WEATHER OUTLOOK NORMALLY WILL BE UPDATED BY MEANS OF THE ZONE FORECASTS...SHORT TERM FORECAST...WATCHES...WARNINGS AND ADVISORIES. THE HAZARDOUS WEATHER OUTLOOK ITSELF WILL BE UPDATED ONLY IF UNEXPECTED HAZARDOUS WEATHER DEVELOPS OR IF EXPECTED HAZARDOUS WEATHER NO LONGER IS FORECAST TO DEVELOP. FOR INFORMATION ON WEATHER THREATS IN AREAS SURROUNDING SOUTH CENTRAL TEXAS...PLEASE REFER TO THE HAZARDOUS WEATHER OUTLOOKS FROM NWS OFFICES IN MIDLAND...SAN ANGELO...FORT WORTH... HOUSTON/GALVESTON AND CORPUS CHRISTI.
Special weather statement, Jun 15, 9:30 PM CDT, 1 hour 10 minutes before
TXZ173-192-160330- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 930 PM CDT TUE JUN 15 1999 ...THUNDERSTORMS DROPPED SPOTTY HEAVY RAINS ACROSS THE SOUTH AUSTIN AREA THIS EVENING... A BAND OF STRONG THUNDERSTORMS WITH VERY HEAVY RAIN PASSED ACROSS SOUTH AUSTIN GENERALLY JUST WEST OF INTERSTATE 35 BETWEEN 530 AND 730 PM THIS EVENING. RADAR ESTIMATED FROM ONE HALF TO ONE INCH ACROSS MUCH OF SOUTH AUSTIN AND FROM ONE TO TWO INCHES GENERALLY WEST OF I35. A FEW SPOTS MAY HAVE RECEIVED AS MUCH AS TWO TO THREE INCHES IN LESS THAN A COUPLE HOURS. THESE HEAVY RAINS PROMPTED A URBAN AND SMALL STREAM FLOOD ADVISORY FOR THE TRAVIS COUNTY VALID FROM ABOUT 620 PM TO 730 PM. ACTUAL RAINFALL AMOUNTS REPORTED WERE 0.86 AT DOWNTOWN AUSTIN AND 0.50 INCHES AT AUSTIN BERGSTROM AIRPORT. THESE REPORTS WERE NORTH AND WEST OF THE HEAVIEST RAINS.
Special weather statement, Jun 15, 9:30 PM CDT, 1 hour 10 minutes before
TXZ173-192-160330- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 930 PM CDT TUE JUN 15 1999 ...THUNDERSTORMS DROPPED SPOTTY HEAVY RAINS ACROSS THE SOUTH AUSTIN AREA THIS EVENING... A BAND OF STRONG THUNDERSTORMS WITH VERY HEAVY RAIN PASSED ACROSS SOUTH AUSTIN GENERALLY JUST WEST OF INTERSTATE 35 BETWEEN 530 AND 730 PM THIS EVENING. RADAR ESTIMATED FROM ONE HALF TO ONE INCH ACROSS MUCH OF SOUTH AUSTIN AND FROM ONE TO TWO INCHES GENERALLY WEST OF I35. A FEW SPOTS MAY HAVE RECEIVED AS MUCH AS TWO TO THREE INCHES IN LESS THAN A COUPLE HOURS. THESE HEAVY RAINS PROMPTED A URBAN AND SMALL STREAM FLOOD ADVISORY FOR THE TRAVIS COUNTY VALID FROM ABOUT 620 PM TO 730 PM. ACTUAL RAINFALL AMOUNTS REPORTED WERE 0.86 AT DOWNTOWN AUSTIN AND 0.50 INCHES AT AUSTIN BERGSTROM AIRPORT. THESE REPORTS WERE NORTH AND WEST OF THE HEAVIEST RAINS.
The office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 15, 9:45 PM CDT | Flash Flood Warning | EWX | Bexar, Comal | 60 min |
Nearby
Flash Flood Warnings in Texas, 1999Every flash flood warning in 1999
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.