Alert archive / Texas / Flash Flood Warnings in 2016
Flash Flood Warning 81, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this flash flood warning at Aug 21, 2016, 1:48 AM CDT for Atascosa County, Bexar County, Frio County, Texas. It was in force for 5 hr. 4 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Aug 21, 2016, 1:48 AM CDT (06:48 UTC)
- Expired
- Aug 21, 2016, 6:45 AM CDT
- In force
- 5 hr
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Storm-based polygon
- Flood severity
- None
Counties Atascosa County, TX, Bexar County, TX, Frio County, TX
The radar
The Austin/San Antonio radar (KEWX), 104 km from the middle of the area, began a volume at 06:51 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Aug 21, 2:22 AM CDT | FLASH FLOOD | 3 W Brooks City Base, TX | SAFD REPORTS TWO WATER RESCUES ON THE SOUTH SIDE OF SAN ANTONIO. BASCUM BLVD AND DEELY PLACE... I-35 AND NOGALITOS STREET. |
| Aug 21, 6:21 AM CDT | HEAVY RAIN 9.1 | 8 Sse San Antonio, TX | 24 HOUR RAINFALL AMOUNT AS OF 621 AM |
| Aug 21, 6:30 AM CDT | FLASH FLOOD | Lytle, TX | SEVERAL FLOODED ROADWAYS REPORTED IN AND AROUND LYTLE. |
| Aug 21, 6:30 AM CDT | FLASH FLOOD | Pearsall, TX | VARIOUS FM...COUNTY...AND CITY ROADWAYS REPORTED FLOODED THROUGHOUT FRIO COUNTY. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Del Rio, TX (KDLF), launched 00:00Z, 6.8 hours before the alert went out and 198 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
- 988 J/kg
- Mixed-layer CIN
- -10 J/kg
- Mixed-layer LCL
- 1147 m above ground
- 0-6 km bulk shear
- 12 kt
- 0-1 km storm-relative helicity
- 8 m²/s²
- 0-3 km storm-relative helicity
- 24 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
853
WGUS54 KEWX 210648
FFWEWX
TXC013-029-163-210945-
/O.NEW.KEWX.FF.W.0081.160821T0648Z-160821T0945Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
148 AM CDT SUN AUG 21 2016
THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS ISSUED A
* FLASH FLOOD WARNING FOR...
SOUTHERN BEXAR COUNTY IN SOUTH CENTRAL TEXAS...
FRIO COUNTY IN SOUTH CENTRAL TEXAS...
WESTERN ATASCOSA COUNTY IN SOUTH CENTRAL TEXAS...
* UNTIL 445 AM CDT
* AT 143 AM CDT...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING
HEAVY RAIN ACROSS THE WARNED AREA. UP TO TWO TO FOUR INCHES OF
RAIN HAVE ALREADY FALLEN OVER THE PAST 3 HOURS, ESPECIALLY OVER
FRIO COUNTY AND PORTIONS OF ATASCOSA COUNTY. FRIO COUNTY LAW
ENFORCEMENT IS STARTING TO BARRICADE LOW WATER CROSSINGS BETWEEN
PEARSALL AND FRIO TOWN. IN ADDITION, 1 TO 1.5 INCH PER HOUR
RAINFALL RATES HAVE BEEN ESTIMATED PER RADAR ACROSS SOUTHERN BEXAR
COUNTY AND THIS COULD LEAD TO LOCALIZED FLOODING AS WELL! NEVER
DRIVE INTO A FLOODED ROADWAY!
* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
SAN ANTONIO...PEARSALL...PLEASANTON...DILLEY...JOURDANTON...
POTEET...CHARLOTTE...MOORE...LYTLE...ST. HEDWIG...SOMERSET...
ELMENDORF...FRIO TOWN...GOLDFINCH...CALAVERAS LAKE...
LACKLAND AFB...NORTH PEARSALL...WEST PEARSALL...
SCHATTEL AND BIGFOOT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TURN AROUND...DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.
BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING.
EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...URBAN AREAS...HIGHWAYS...STREETS...AND
UNDERPASSES AS WELL AS OTHER DRAINAGE AREAS AND LOW LYING SPOTS.
&&
LAT...LON 2909 9941 2909 9880 2945 9880 2945 9813
2913 9839 2912 9845 2865 9866 2864 9941
$$
ALLEN3 follow-up statements
286
WGUS74 KEWX 210751
FFSEWX
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
251 AM CDT SUN AUG 21 2016
TXC013-029-163-210945-
/O.CON.KEWX.FF.W.0081.000000T0000Z-160821T0945Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BEXAR TX-FRIO TX-ATASCOSA TX-
251 AM CDT SUN AUG 21 2016
...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 445 AM CDT FOR
SOUTHERN BEXAR...FRIO AND WESTERN ATASCOSA COUNTIES...
AT 240 AM CDT...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING
HEAVY RAIN ACROSS THE WARNED AREA. A MEASURED 3.45 INCHES HAS
OCCURRED AT THE STINSON AIRPORT OVER THE PAST HOUR AND 40 MINUTES
WITH 2.15 INCHES WITHIN THE PAST 50 MINUTES AS OF 245AM. OVERALL, 5
TO 6 INCHES WILL BE POSSIBLE THROUGH 4 TO 5AM ACROSS PORTIONS OF
BEXAR AND INTO PORTIONS OF THE SAN ANTONIO METRO AREA.
HIGH WATER RESCUES ARE BEGINNING TO OCCUR ON THE SOUTHSIDE OF SAN
ANTONIO. DO NOT DRIVE INTO FLOODED ROADWAYS!
FURTHERMORE, FRIO COUNTY AND PORTIONS OF ATASCOSA ARE ALSO
EXPERIENCING FLOODED ROADWAYS ACROSS THEIR RESPECTIVE COUNTIES.
BARRICADES HAVE BEEN PLACED AT THESE ROADS AND THEY ARE CLOSED.
NEVER DRIVE AROUND BARRICADES.
SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
SAN ANTONIO...PEARSALL...PLEASANTON...DILLEY...JOURDANTON...POTEET...
CHARLOTTE...MOORE...LYTLE...ST. HEDWIG...SOMERSET...ELMENDORF...
FRIO TOWN...GOLDFINCH...CALAVERAS LAKE...LACKLAND AFB...
NORTH PEARSALL...WEST PEARSALL...SCHATTEL AND BIGFOOT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TURN AROUND...DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.
BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING.
EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...URBAN AREAS...HIGHWAYS...STREETS AND
UNDERPASSES AS WELL AS OTHER DRAINAGE AREAS AND LOW LYING SPOTS.
&&
LAT...LON 2909 9941 2909 9880 2945 9880 2945 9813
2913 9839 2912 9845 2865 9866 2864 9941
$$
ALLEN106
WGUS54 KEWX 210928
FFWEWX
TXC013-029-163-211145-
/O.EXT.KEWX.FF.W.0081.000000T0000Z-160821T1145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
428 AM CDT SUN AUG 21 2016
THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS EXTENDED THE
* FLASH FLOOD WARNING FOR...
SOUTHERN BEXAR COUNTY IN SOUTH CENTRAL TEXAS...
FRIO COUNTY IN SOUTH CENTRAL TEXAS...
WESTERN ATASCOSA COUNTY IN SOUTH CENTRAL TEXAS...
* UNTIL 645 AM CDT
* AT 423 AM CDT...DOPPLER RADAR INDICATED HEAVY TROPICAL SHOWERS
PRODUCING HEAVY RAIN ACROSS THE WARNED AREA. FLASH FLOODING IS
ALREADY OCCURRING. NUMEROUS LOW LYING ROADS HAVE BEEN FLOODED
ACROSS SOUTHERN BEXAR, PORTIONS OF ATASCOSA, MUCH OF FRIO COUNTY
AT THIS TIME PER LAW ENFORCEMENT REPORTS. NEVER DRIVE AROUND
BARRICADES INTO FLOODED ROADWAYS!
* MODERATE RAIN WILL PERSIST THROUGH 6 TO 7AM ACROSS THE WARNED AREA
BUT RAINFALL RATES SHOULD SLOWLY DECREASE. AN ADDITIONAL 1-2
INCHES COULD BE POSSIBLE THROUGH THE TIME-FRAME.
* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
SAN ANTONIO...PEARSALL...PLEASANTON...DILLEY...JOURDANTON...
POTEET...CHARLOTTE...MOORE...LYTLE...ST. HEDWIG...SOMERSET...
ELMENDORF...FRIO TOWN...GOLDFINCH...CALAVERAS LAKE...
LACKLAND AFB...NORTH PEARSALL...WEST PEARSALL...
SCHATTEL AND BIGFOOT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING.
&&
LAT...LON 2909 9941 2909 9880 2945 9880 2945 9813
2913 9839 2912 9845 2865 9866 2864 9941
$$
ALLEN565
WGUS74 KEWX 211112
FFSEWX
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
612 AM CDT SUN AUG 21 2016
TXC013-029-163-211145-
/O.CON.KEWX.FF.W.0081.000000T0000Z-160821T1145Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BEXAR TX-FRIO TX-ATASCOSA TX-
612 AM CDT SUN AUG 21 2016
...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 645 AM CDT FOR
SOUTHERN BEXAR...FRIO AND WESTERN ATASCOSA COUNTIES...
AT 606 AM CDT...NEW HEAVY SHOWER ACTIVITY MOVING IN ACROSS SOUTHERN
BEXAR COUNTY WILL CONTINUE TO MOVE TO THE NORTHWEST AND AFFECT AREAS
NEARBY LACKLAND AFB AND SEA WOLRD AREA. UP TO ONE INCH OF RAIN HAS
ALREADY FALLEN WITH ADDITIONAL ONE INCH POSSIBLE WITHIN THE NEXT FEW
HOURS.
SOME LOCATIONS THAT WILL EXPERIENCE MINOR FLOODING INCLUDE... SAN
ANTONIO...PEARSALL...PLEASANTON...DILLEY...JOURDANTON...POTEET...
CHARLOTTE...MOORE...LYTLE...ST. HEDWIG...SOMERSET...ELMENDORF...
FRIO TOWN...GOLDFINCH...CALAVERAS LAKE...LACKLAND AFB... NORTH
PEARSALL...WEST PEARSALL...SCHATTEL AND BIGFOOT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TURN AROUND...DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.
BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING.
&&
LAT...LON 2909 9941 2909 9880 2945 9880 2945 9813
2913 9839 2912 9845 2865 9866 2864 9941
$$The office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 20, 7:03 PM CDT | Flash Flood Warning | EWX | Atascosa, Gonzales, Guadalupe, Wilson | 9 hr |
| Aug 20, 9:15 PM CDT | Areal Flood Advisory | EWX | Fayette, Gonzales, Lavaca | 3 hr |
| Aug 20, 9:46 PM CDT | River Flood Warning | EWX | Gonzales | 3 days |
| Aug 20, 10:59 PM CDT | Areal Flood Advisory | EWX | Bexar | 3 hr |
| Aug 20, 11:23 PM CDT | River Flood Warning | EWX | Travis | 14 hr |
| Aug 20, 11:32 PM CDT | Areal Flood Advisory | EWX | DeWitt, Gonzales, Karnes | 3 hr |
| Aug 21, 12:39 AM CDT | River Flood Warning | EWX | Karnes | 38 hr |
| Aug 21, 12:45 AM CDT | Areal Flood Advisory | EWX | Lee, Williamson | 3 hr |
| Aug 21, 12:50 AM CDT | Areal Flood Advisory | EWX | DeWitt | 3 hr |
| Aug 21, 1:04 AM CDT | Areal Flood Advisory | EWX | Atascosa, Frio | 3 hr |
| Aug 21, 1:39 AM CDT | Areal Flood Advisory | EWX | Bexar | 3 hr |
| Aug 21, 1:54 AM CDT | Areal Flood Advisory | EWX | Bastrop, Travis | 3 hr |
| Aug 21, 2:27 AM CDT | Areal Flood Advisory | EWX | Comal | 3 hr |
| Aug 21, 3:06 AM CDT | Flash Flood Warning | EWX | Comal | 3 hr |
| Aug 21, 3:17 AM CDT | Areal Flood Advisory | EWX | Travis, Williamson | 3 hr |
| Aug 21, 3:29 AM CDT | River Flood Warning | EWX | DeWitt | 58 hr |
| Aug 21, 4:03 AM CDT | River Flood Warning | EWX | Karnes | 24 hr |
| Aug 21, 4:07 AM CDT | Areal Flood Advisory | EWX | Medina | 113 min |
| Aug 21, 5:04 AM CDT | Areal Flood Advisory | EWX | Bexar | 116 min |
| Aug 21, 5:17 AM CDT | Flash Flood Warning | EWX | Medina | 3 hr |
| Aug 21, 5:21 AM CDT | River Flood Warning | EWX | Gonzales | 20 hr |
| Aug 21, 5:41 AM CDT | River Flood Warning | EWX | Bexar, Wilson | 49 hr |
| Aug 21, 5:41 AM CDT | River Flood Warning | EWX | Bexar | 23 hr |
| Aug 21, 5:52 AM CDT | Flash Flood Warning | EWX | Comal | 113 min |
| Aug 21, 6:01 AM CDT | Areal Flood Advisory | EWX | Kendall | 3 hr |
| Aug 21, 6:19 AM CDT | Areal Flood Advisory | EWX | Travis, Williamson | 116 min |
| Aug 21, 6:38 AM CDT | Flash Flood Warning | EWX | Atascosa, Bexar, Frio | 3 hr |
| Aug 21, 8:41 AM CDT | Areal Flood Advisory | EWX | Uvalde, Zavala | 2 hr |
| Aug 21, 9:23 AM CDT | Flash Flood Warning | EWX | Zavala | 3 hr |
| Aug 21, 10:55 AM CDT | Areal Flood Advisory | EWX | DeWitt, Gonzales, Guadalupe, Karnes, Wilson | 110 min |
| Aug 21, 11:25 AM CDT | Flash Flood Warning | EWX | DeWitt, Gonzales, Guadalupe, Karnes, Wilson | 5 hr |
| Aug 21, 2:42 PM CDT | Areal Flood Advisory | EWX | Fayette | 2 hr |
Nearby
Flash Flood Warnings in Texas, 2016Every flash flood warning in 2016
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.