Alert archive / Texas / Flash Flood Warnings in 2013

Flash Flood Warning 21, NWS San Angelo, TX

October 12, 2013McCulloch County, San Saba County, Texas

NWS San Angelo, TX issued this flash flood warning at Oct 12, 2013, 11:24 PM CDT for McCulloch County, San Saba County, Texas. It was in force for 6 hr. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Oct 12, 2013, 11:24 PM CDT (04:24 UTC)
Expired
Oct 13, 2013, 5:30 AM CDT
In force
6 hr
Issued by
NWS San Angelo, TX
Area
Storm-based polygon
Flood severity
None

Counties McCulloch County, TX, San Saba County, TX

The radar

The Dyess AFB radar (KDYX), 143 km from the middle of the area, began a volume at 04:25 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

Fort Worth, TX (KFWD), launched 00:00Z, 4.4 hours before the alert went out and 234 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, Fort Worth, TX at 00:00Z on 2013-10-13Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1697 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Fort Worth, TX at 00:00Z on 2013-10-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 30 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
1697 J/kg
Mixed-layer CIN
-50 J/kg
Mixed-layer LCL
978 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
30 m²/s²
0-3 km storm-relative helicity
46 m²/s²
Significant tornado parameter
0.4
Supercell composite
1.6

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

782 
WGUS54 KSJT 130424
FFWSJT
TXC307-411-131030-
/O.NEW.KSJT.FF.W.0021.131013T0424Z-131013T1030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SAN ANGELO TX
1124 PM CDT SAT OCT 12 2013

THE NATIONAL WEATHER SERVICE IN SAN ANGELO HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  MCCULLOCH COUNTY IN WEST CENTRAL TEXAS...
  SAN SABA COUNTY IN WEST CENTRAL TEXAS...

* UNTIL 530 AM CDT SUNDAY

* AT 1116 PM CDT...THUNDERSTORMS WITH VERY HEAVY RAINFALL
  CONTINUE. RADAR ESTIMATES INDICATE SOME LOCATIONS IN NORTHERN
  MCCULLOCH COUNTY AND NORTHERN SAN SABA COUNTY HAVE SEEN
  AMOUNTS IN THE 1 TO 3 INCHES AN HOUR RANGE.

* IMPACTS FROM THIS INTENSE RAINFALL WILL INCLUDE:
  FLOODING OF LOW LYING ROADS AND INTERSECTIONS.
  RAPID RISE OF AREA CREEKS...STREAMS...AND ARROYOS.

  WATER WILL BE HIGH AND FAST ENOUGH TO STALL VEHICLES OR WASH THEM
  COMPLETELY OFF THE ROAD.

SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...SAN 
SABA...RICHLAND SPRINGS...BRADY...ALGERITA...BEND...BRADY 
LAKE...WALDRIP...VOCA...STACY...SKEETERVILLE...SALT 
GAP...ROCHELLE...PLACID...PEAR 
VALLEY...MERCURY...MELVIN...LOHN...ELM GROVE...DOOLE...CHEROKEE AND 
CHAPPEL.

THIS INCLUDES THE LOW WATER CROSSINGS AT...
  FM 1030 CROSSING WALLACE CREEK...
  FM 1851 CROSSING TIGER CREEK...
  FM 1028 CROSSING CORN CREEK...
  FM 1121 CROSSING ONION CREEK...
  COUNTY ROAD 432 CROSSING CHEROKEE CREEK...
  COUNTY ROAD 343 CROSSING CHEROKEE CREEK...
  CROSSINGS ALONG COUNTY ROAD 244...
  CROSSINGS ALONG COUNTY ROAD 246...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING. IF FLASH FLOODING IS OBSERVED ACT QUICKLY. DO
NOT ENTER THE WATER. TURN AROUND AND MOVE UP TO HIGHER GROUND TO
ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS SUBJECT TO FLOODING WHEN
WATER BEGINS RISING.

&&

LAT...LON 3094 9960 3147 9961 3142 9947 3145 9944
      3144 9934 3141 9931 3144 9928 3145 9910
      3149 9899 3141 9877 3138 9876 3143 9873
      3135 9870 3136 9866 3117 9851 3111 9853
      3111 9845 3106 9847 3103 9843 3093 9842

$$

HUBER
1 follow-up statement
271 
WGUS74 KSJT 130654
FFSSJT

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SAN ANGELO TX
154 AM CDT SUN OCT 13 2013

TXC307-411-131030-
/O.CON.KSJT.FF.W.0021.000000T0000Z-131013T1030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MCCULLOCH TX-SAN SABA TX-
154 AM CDT SUN OCT 13 2013

...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 530 AM CDT FOR SAN
SABA AND MCCULLOCH COUNTIES...

AT 140 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE LIGHT TO MODERATE RAINFALL ACROSS SAN SABA COUNTY AND A FEW 
THUNDERSTORMS OVER MCCULLOCH COUNTY. THE LCRA GAGES HAVE INDICATED 1 
TO 2.5 INCHES OF RAIN ACROSS SOUTHERN SAN SABA COUNTY. ADDITIONAL 
RAINFALL AMOUNTS OF AROUND 1 INCH ARE LIKELY THROUGH 530 AM. 

LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO SAN 
SABA...RICHLAND SPRINGS...BRADY...WALDRIP...SKEETERVILLE...SALT 
GAP...PLACID...PEAR VALLEY...MERCURY...LOHN...ELM GROVE AND DOOLE

THIS INCLUDES THE LOW WATER CROSSINGS AT...
  FM 1028 CROSSING CORN CREEK...
  CROSSINGS ALONG COUNTY ROAD 244...
  CROSSINGS ALONG COUNTY ROAD 246...
  COUNTY ROAD 440 CROSSING SPRING BRANCH...
  COUNTY ROAD 440 CROSSING DEEP CREEK...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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. MOVE TO HIGHER GROUND.

&&

LAT...LON 3094 9960 3147 9961 3142 9947 3145 9944
      3144 9934 3141 9931 3144 9928 3145 9910
      3149 9899 3141 9877 3138 9876 3143 9873
      3135 9870 3136 9866 3117 9851 3111 9853
      3111 9845 3106 9847 3103 9843 3093 9842

$$

MC

The office that day

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

IssuedProductOfficeCountiesLasted
Oct 12, 8:05 PM CDTSevere Thunderstorm WarningSJTSchleicher25 min
Oct 12, 8:37 PM CDTSevere Thunderstorm WarningSJTMenard23 min
Oct 12, 8:48 PM CDTSevere Thunderstorm WarningSJTConcho, Tom Green27 min
Oct 12, 9:54 PM CDTSpecial Weather StatementSJTMenard51 min
Oct 12, 10:30 PM CDTSpecial Weather StatementSJTSan Saba60 min
Oct 12, 10:54 PM CDTSpecial Weather StatementSJTMason51 min
Oct 13, 12:17 AM CDTAreal Flood AdvisorySJTConcho, Tom Green118 min
Oct 13, 2:32 AM CDTAreal Flood AdvisorySJTConcho, Tom Green118 min
Oct 13, 6:43 AM CDTAreal Flood AdvisorySJTKimble2 hr
Oct 13, 7:17 AM CDTSpecial Weather StatementSJTTom Green58 min
Oct 13, 8:04 AM CDTAreal Flood AdvisorySJTTom Green116 min
Oct 13, 8:32 AM CDTFlash Flood WatchSJTBrown, Coke, Coleman, Concho, Crockett, Irion and 12 more22 hr
Oct 13, 8:51 AM CDTFlash Flood WarningSJTTom Green3 hr
Oct 13, 10:09 AM CDTAreal Flood AdvisorySJTConcho81 min

Nearby

Flash Flood Warnings in Texas, 2013Every flash flood warning in 2013

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.