Alert archive / Texas / Flash Flood Warnings in 2007

Flash Flood Warning 14, NWS San Angelo, TX

April 30, 2007Runnels County, Texas

NWS San Angelo, TX issued this flash flood warning at Apr 30, 2007, 5:54 PM CDT for Runnels County, Texas. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Apr 30, 2007, 5:54 PM CDT (22:54 UTC)
Expired
Apr 30, 2007, 9:00 PM CDT
In force
3 hr
Issued by
NWS San Angelo, TX
Area
Whole counties

County Runnels County, TX

The radar

The San Angelo radar (KSJT), 71 km from the middle of the area, began a volume at 22:56 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

Midland Regional, TX (KMAF), launched 12:00Z, 10.9 hours before the alert went out and 210 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.

Skew-T log-pSkew-T log-p diagram, Midland Regional, TX at 12:00Z on 2007-04-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 23 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Midland Regional, TX at 12:00Z on 2007-04-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 53 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
23 J/kg
Mixed-layer CIN
-151 J/kg
Mixed-layer LCL
972 m above ground
0-6 km bulk shear
36 kt
0-1 km storm-relative helicity
53 m²/s²
0-3 km storm-relative helicity
55 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

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 San Angelo, TX wrote its last area forecast discussion before this flash flood warning went out at Apr 30, 3:38 PM CDT, 2 hours 16 minutes earlier.

Area forecast discussion, Apr 30, 3:38 PM CDT, 2 hours 16 minutes before
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Hazardous weather outlook, Apr 30, 3:36 PM CDT, 2 hours 18 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SAN ANGELO TX
336 PM CDT MON APR 30 2007

TXZ049-054-064>066-071>073-076>078-098-099-113-114-127-128-139-
140-154-155-168>170-012045-
FISHER-NOLAN-STERLING-COKE-RUNNELS-IRION-TOM GREEN-CONCHO-
CROCKETT-SCHLEICHER-SUTTON-HASKELL-THROCKMORTON-JONES-SHACKELFORD-
TAYLOR-CALLAHAN-COLEMAN-BROWN-MCCULLOCH-SAN SABA-MENARD-KIMBLE-
MASON-
336 PM CDT MON APR 30 2007

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF WEST CENTRAL
TEXAS.

.DAY ONE...THIS AFTERNOON AND TONIGHT
SCATTERED THUNDERSTORMS WILL CONTINUE TO DEVELOP THIS AFTERNOON
ACROSS MUCH OF WEST CENTRAL TEXAS. SOME OF THESE THUNDERSTORMS MAY
BRIEFLY BECOME SEVERE AND PRODUCE HAIL UP TO QUARTER SIZE AND WIND
GUSTS TO 60 MPH. IN ADDITION ANOTHER COMPLEX OF THUNDERSTORMS ARE
FORECAST TO FORM OVERNIGHT ALONG AND NORTH OF INTERSTATE 20. THESE
THUNDERSTORMS WILL BE CAPABLE OF PRODUCING HEAVY RAINFALL AND A
FLASH FLOOD WATCH WILL BE ISSUED FOR THE BIG COUNTRY TONIGHT.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY
ANOTHER UPPER LEVEL STORM SYSTEM WILL APPROACH WEST CENTRAL TEXAS
FOR WEDNESDAY OR THURSDAY...PRODUCING ANOTHER ROUND OF SHOWERS OR
THUNDERSTORMS. GIVEN THE SATURATED SOILS...AND THE POSSIBILITY OF
MORE HEAVY RAINFALL...FLASH FLOODING WILL BE THE MAIN THREATS.

.SPOTTER INFORMATION STATEMENT...
LIMITED SPOTTER ACTIVATION MAY BE NEEDED THIS AFTERNOON AND EVENING.

In the hours before

Local storm report, Apr 30, 2:49 PM CDT, 3 hours 5 minutes before
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Special weather statement, Apr 30, 3:57 PM CDT, 1 hour 57 minutes before
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Local storm report, Apr 30, 5:46 PM CDT, 8 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SAN ANGELO TX
546 PM CDT MON APR 30 2007

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0543 PM     HAIL             MILES                   31.60N 100.18W
04/30/2007  E1.75 INCH       RUNNELS            TX   FIRE DEPT/RESCUE

            ALSO NICKEL SIZE HAIL

&&

MCUNNING

The office that day

Everything else NWS San Angelo, TX issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 29, 8:02 PM CDTSevere Thunderstorm WarningSJTCoke, Nolan43 min
Apr 29, 8:45 PM CDTSevere Thunderstorm WarningSJTNolan, Taylor30 min
Apr 29, 9:15 PM CDTSevere Thunderstorm WarningSJTTaylor60 min
Apr 29, 9:24 PM CDTSevere Thunderstorm WarningSJTCallahan51 min
Apr 29, 10:06 PM CDTFlash Flood WarningSJTCallahan, Jones, Shackelford, Taylor3 hr
Apr 29, 10:15 PM CDTSevere Thunderstorm WarningSJTJones, Shackelford60 min
Apr 29, 10:29 PM CDTSevere Thunderstorm WarningSJTTom Green46 min
Apr 29, 10:34 PM CDTSevere Thunderstorm WarningSJTTaylor56 min
Apr 29, 10:43 PM CDTSevere Thunderstorm WarningSJTCoke47 min
Apr 29, 11:00 PM CDTSevere Thunderstorm WarningSJTNolan60 min
Apr 29, 11:09 PM CDTSevere Thunderstorm WarningSJTConcho, Runnels51 min
Apr 29, 11:32 PM CDTSevere Thunderstorm WarningSJTShackelford58 min
Apr 29, 11:43 PM CDTSevere Thunderstorm WarningSJTColeman, Runnels47 min
Apr 30, 12:10 AM CDTSevere Thunderstorm WarningSJTCallahan, Taylor35 min
Apr 30, 12:30 AM CDTSevere Thunderstorm WarningSJTBrown, Coleman60 min
Apr 30, 12:48 AM CDTSevere Thunderstorm WarningSJTCallahan, Shackelford27 min
Apr 30, 2:34 PM CDTSevere Thunderstorm WarningSJTTom Green26 min
Apr 30, 4:06 PM CDTFlash Flood WatchSJTCallahan, Fisher, Haskell, Jones, Nolan, Shackelford and 2 more16 hr
Apr 30, 5:41 PM CDTSevere Thunderstorm WarningSJTRunnels34 min
Apr 30, 6:01 PM CDTSevere Thunderstorm WarningSJTConcho29 min
Apr 30, 6:16 PM CDTSevere Thunderstorm WarningSJTRunnels29 min
Apr 30, 6:33 PM CDTSevere Thunderstorm WarningSJTColeman57 min

Nearby

Flash Flood Warnings in Texas, 2007Every flash flood warning in 2007

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.