Alert archive / Texas / Flash Flood Warnings in 2001
Flash Flood Warning 14, NWS Austin/San Antonio, TX
NWS Austin/San Antonio, TX issued this flash flood warning at May 4, 2001, 6:42 PM CDT for Kinney County, Texas. It was in force for 2 hr. No storm report in the archive falls inside the area while it was in force.
The area
The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.
The facts
- Issued
- May 4, 2001, 6:42 PM CDT (23:42 UTC)
- Expired
- May 4, 2001, 9:00 PM CDT
- In force
- 2 hr
- Issued by
- NWS Austin/San Antonio, TX
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
County Kinney County, TX
The radar
The Laughlin AFB radar (KDFX), 30 km from the middle of the area, began a volume at 23:41 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.
The nearest sounding before it
Del Rio, TX (KDRT), launched 12:00Z, 11.7 hours before the alert went out and 38 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
- 947 J/kg
- Mixed-layer CIN
- 0 J/kg
- Mixed-layer LCL
- 590 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 232 m²/s²
- 0-3 km storm-relative helicity
- 318 m²/s²
- Significant tornado parameter
- 1.3
- Supercell composite
- 11.5
The text
As transmitted, in the capitals the NWS used until 2016.
000 WGUS54 KEWX 042342 FFWSAT TXC271-050200- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 642 PM CDT FRI MAY 4 2001 THE NATIONAL WEATHER SERVICE HAS ISSUED A * FLASH FLOOD WARNING FOR... KINNEY * UNTIL 9 PM CDT * AT 642 PM...WEATHER SERVICE DOPPLER RADAR INDICATED VERY HEAVY RAIN ABOUT 6 MILES NORTH OF DEL RIO...MOVING EAST AT 30 MPH. THIS STORM WILL MOVE INTO CENTRAL AND NORTHERN KINNEY COUNTY IN THE NEXT 15 TO 20 MINUTES OVER AN AREAS ALREADY SATURATED FROM HEAVY RAINFALL. A SLOW MOVING STORM OVER EXTREME NORTHERN KINNEY COUNTY IS LIKELY PRODUCING RUN-OFF PROBLEMS NEAR THE TRIBUTARIES OF SYCAMORE CREEK AND THE WEST NUECES RIVER. 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 GROiUND. LAT...LON 2959 10064 2933 10066 2932 10018 2960 10022
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.
NWS Austin/San Antonio, TX wrote its last area forecast discussion before this flash flood warning went out at May 4, 3:15 PM CDT, 3 hours 27 minutes earlier.
Area forecast discussion, May 4, 3:15 PM CDT, 3 hours 27 minutes before
SOUTH CENTRAL TEXAS FORECAST DISCUSSION
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
315 PM CDT FRI MAY 4 2001
WILL EXTEND THE FLASH FLOOD WATCH EAST INTO CENTRAL AND NORTHEASTERN
SECTIONS OF SOUTH CENTRAL TEXAS THIS AFTERNOON AS MOST MODELS DRAG A
SLOW MOVING COMPLEX OF THUNDERSTORMS THROUGH THE AREA TONIGHT. ETA
MODELS WHILE SHOWING POOR PERFORMANCE ON PRECIP FORECASTING HAVE
DONE WELL ON PRECIPITABLE WATER VALUES. STRONG SHORTWAVE LIFTING OUT
OF MEXICO IS TRIGGERING CURRENT THUNDERSTORM ACTIVITY, AND NORTHEAST
MOVEMENT OF THE SHORTWAVE COMBINED WITH GOOD DIFFULENCE ALOFT WILL
ALLOW FOR HEAVY RAINS TO MOVE OVER THE PROPOSED WATCH AREA.
SOUTHEAST COUNTIES MAY MISS OUT ON THE HEAVIEST PART OF THE SQUALL
SO WILL ONLY MENTION LOCALLY HEAVY RAINFALL HERE. LATE TOMORROW THE
AREA WILL LIKELY SEE ANOTHER GOOD FLARE UP OF ORGANIZED
THUNDERSTORMS AND A CHANCE FOR FLOODING, BUT WILL NOT EXTEND THE
WATCH WITH UNCERTAINTY IN WHICH AREAS WILL RECEIVE HEAVIEST RAINS
FOR TONIGHT. GUIDANCE TEMPERATURES LOOK APPROPRIATELY MILD FOR THE
NEXT FEW DAYS.
MODELS GOING IN DIFFERENT DIRECTIONS BEYOND TUESDAY WITH 12Z AVN
ACCELERATING THE UPPER LOW POSITION TO SUPPORT DRY WEATHER OVER
SOUTH TX WEDNESDAY. GUIDANCE NUMBERS CLOSE TO CLIMO, BUT CLIMO EVEN
CALLS FOR A CHANCE OF RAIN. MRF SUGGESTS NW FLOW PATTERN LATE IN THE
WEEK AND WHILE NOGAPS SUGGESTS PROLONGED INSTABILITY IN THE BAJA
REGION. THUS CAN NOT RULE OUT AT LEAST SLIGHT CHANCE POPS FOR ANY
DAY THROUGH NEXT FRIDAY.
PRELIMINARY NUMBERS...
AUS 68/79/70/84 8662
DRT 67/85/69/89 6432
SAT 69/80/70/84 6642
.EWX...FLASH FLOOD WATCH THROUGH TONIGHT FOR ALL OF THE SOUTH ?
CENTRAL TEXAS AND THE HILL COUNTRY EXCEPT FOR FAR SOUTHEAST
COUNTIES.
18In the hours before
Special weather statement, May 4, 1:45 PM CDT, 4 hours 57 minutes before
TXZ171-172-183>190-202>204-050200- HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 145 PM CDT FRI MAY 4 2001 ...SEVERE THUNDERSTORMS POSSIBLE IN THE HILL COUNTRY THIS AFTERNOON AND TONIGHT... A DEVELOPING LINE OF THUNDERSTORMS IS MOVING ACROSS VAL VERDE COUNTY. THIS LINE IS EXPECTED TO CONTINUE MOVING TOWARD THE EAST AT 20 MPH THIS AFTERNOON AND INCREASE IN AREAL COVERAGE AND INTENSITY. SOME OF THE STORMS COULD APPROACH SEVERE LIMITS...WHICH MEANS THAT LARGE HAIL...GUSTY DAMAGING WINDS...FREQUENT DEADLY LIGHTNING AND LOCALLY HEAVY RAINFALL WHICH COULD PRODUCE FLASH FLOODING MAY OCCUR. THE AREA WITH THE GREATEST RISK OF SEVERE THUNDERSTORMS IS THAT PORTION OF THE TEXAS HILL COUNTRY WEST OF INTERSTATE 35 BETWEEN SAN ANTONIO AND GEORGETOWN...AND ALONG AND NORTH OF U.S. HIGHWAY 90 BETWEEN SAN ANTONIO AND DEL RIO. THIS OUTLOOK APPLIES TO THE FOLLOWING SPECIFIC COUNTIES... GILLESPIE...MEDINA...KENDALL...REAL...BLANCO...KERR...BURNET... BANDERA...LLANO...EDWARDS...KINNEY...UVALDE AND VAL VERDE. ABUNDANT LOW-LEVEL MOISTURE OVER SOUTH TEXAS...COMBINED WITH AN APPROACHING UPPER-LEVEL DISTURBANCE FROM MEXICO...WILL PRODUCE WIDESPREAD SHOWER AND THUNDERSTORM ACTIVITY THIS AFTERNOON AND TONIGHT. SOME OF THE STORMS COULD BE SEVERE. IN ADDITION...A FLASH FLOOD WATCH IS IN EFFECT FOR MUCH OF THE HILL COUNTRY AND ADJACENT SECTIONS OF THE EDWARDS PLATEAU THROUGH TONIGHT. SPOTTER NETWORKS MAY NEED TO BE ACTIVATED AS THE THUNDERSTORMS MOVE INTO THE THREATENED AREA. FOR INFORMATION ON WEATHER THREATS IN SURROUNDING AREAS...REFER TO OUTLOOKS FROM OFFICES IN MIDLAND...SAN ANGELO...FORT WORTH... HOUSTON/GALVESTON AND CORPUS CHRISTI.
Special weather statement, May 4, 6:29 PM CDT, 13 minutes before
TXZ171>173-183>194-202>208-217>221-228-050000- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX 629 PM CDT FRI MAY 4 2001 ...A SEVERE THUNDERSTORM WARNING IS IN EFFECT FOR VAL VERDE AND KINNEY COUNTIES THROUGH 7 PM... ...A FLASH FLOOD WARNING IS IN EFFECT FOR VAL VERDE AND EDWARDS COUNTIES THROUGH 8 PM... ...A TORNADO WATCH IS IN EFFECT UNTIL 9 PM FOR THE HILL COUNTRY AND PORTIONS OF SOUTH CENTRAL TEXAS WEST OF A BURNET TO BOERNE TO PEARSALL LINE... ...A FLASH FLOOD WATCH IS IN EFFECT FOR THE HILL COUNTRY AND PORTIONS OF SOUTH CENTRAL TEXAS NORTHWEST OF A PLEASANTON TO GIDDINGS LINE... STAY TUNED TO NOAA WEATHER RADIO...COMMERCIAL TELEVISION OR RADIO STATIONS...OR YOUR CABLE TELEVISION PROVIDER FOR LATER STATEMENTS CONCERNING THIS DANGEROUS SEVERE WEATHER AND FLASH FLOOD EVENT.
The office that day
Everything else NWS Austin/San Antonio, TX issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 4, 1:42 PM CDT | Severe Thunderstorm Warning | EWX | Val Verde | 63 min |
| May 4, 1:45 PM CDT | Flash Flood Warning | EWX | Val Verde | 2 hr |
| May 4, 2:43 PM CDT | Severe Thunderstorm Warning | EWX | Val Verde | 62 min |
| May 4, 3:45 PM CDT | Severe Thunderstorm Warning | EWX | Val Verde | 60 min |
| May 4, 3:56 PM CDT | Tornado Warning | EWX | Val Verde | 34 min |
| May 4, 4:00 PM CDT | Flash Flood Warning | EWX | Val Verde | 2 hr |
| May 4, 5:30 PM CDT | Flash Flood Warning | EWX | Edwards | 3 hr |
| May 4, 5:55 PM CDT | Flash Flood Warning | EWX | Val Verde | 2 hr |
| May 4, 5:58 PM CDT | Severe Thunderstorm Warning | EWX | Kinney, Val Verde | 62 min |
| May 4, 6:41 PM CDT | Tornado Warning | EWX | Kinney | 64 min |
Nearby
Flash Flood Warnings in Texas, 2001Every flash flood warning in 2001
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; radar from the NEXRAD Level II archive.