Alert archive / Texas / Flash Flood Warnings in 2015

Flash Flood Warning 6, NWS Austin/San Antonio, TX

April 24, 2015Lee County, Texas

NWS Austin/San Antonio, TX issued this flash flood warning at Apr 24, 2015, 6:41 AM CDT for Lee County, Texas. It was in force for 3 hr. 1 report 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: Apr 24, 2015, 6:41 AM CDT (11:41 UTC)
Expired: Apr 24, 2015, 9:45 AM CDT
In force: 3 hr
Issued by: NWS Austin/San Antonio, TX
Area: Storm-based polygon
Flood severity: None

County Lee County, TX

The radar

The Ft Hood radar (KGRK), 72 km from the middle of the area, began a volume at 11:43 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
Apr 24, 9:00 AM CDT	FLASH FLOOD	1 Nnw Loebau, TX	COUNTY ROAD 143 IS CLOSED AND IMPASSABLE DUE TO FLOODING.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Fort Worth, TX (KFWD), launched 00:00Z, 11.7 hours before the alert went out and 287 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 732 J/kg
Mixed-layer CIN: -112 J/kg
Mixed-layer LCL: 739 m above ground
0-6 km bulk shear: 53 kt
0-1 km storm-relative helicity: 204 m²/s²
0-3 km storm-relative helicity: 377 m²/s²
Significant tornado parameter: 0.7
Supercell composite: 19.9

Open this sounding in Storm Lab

The text

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

710 
WGUS54 KEWX 241141
FFWEWX
TXC287-241445-
/O.NEW.KEWX.FF.W.0006.150424T1141Z-150424T1445Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
641 AM CDT FRI APR 24 2015

THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  LEE COUNTY IN SOUTH CENTRAL TEXAS...

* UNTIL 945 AM CDT
    
* AT 641 AM CDT...DOPPLER RADAR INDICATED A THUNDERSTORM PRODUCING
  HEAVY RAIN ACROSS THE WARNED AREA. FLASH FLOODING IS EXPECTED TO
  BEGIN SHORTLY.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  GIDDINGS...FEDOR...DIME BOX...NORTHRUP...LOEBAU...LINCOLN...OLD
  DIME BOX...LEO...SERBIN...MANHEIM AND HILLS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TURN AROUND...DONT DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.

&&

LAT...LON 3025 9669 3024 9674 3020 9674 3011 9685
      3003 9702 3026 9708 3028 9711 3046 9688
      3043 9687 3043 9685 3039 9679 3032 9674
      3032 9669 3029 9665

$$

HAMPSHIRE

1 follow-up statement

500 
WGUS74 KEWX 241319
FFSEWX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
819 AM CDT FRI APR 24 2015

TXC287-241445-
/O.CON.KEWX.FF.W.0006.000000T0000Z-150424T1445Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
LEE TX-
819 AM CDT FRI APR 24 2015

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 945 AM CDT FOR LEE
COUNTY...

AT 809 AM CDT...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING 
MODERATE TO HEAVY RAIN ACROSS THE WARNED AREA. UP TO TWO INCHES OF 
RAIN HAVE ALREADY FALLEN...MAINLY ALONG AND SOUTH OF HIGHWAY 21. FLASH 
FLOODING REMAINS POSSIBLE. 

SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
GIDDINGS...FEDOR...DIME BOX...NORTHRUP...LOEBAU...LINCOLN...LEO...
SERBIN...MANHEIM AND HIGHWAY 21.

ADDITIONAL RAINFALL AMOUNTS OF 1 TO 2 INCHES REMAIN POSSIBLE IN
THE WARNED AREA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TURN AROUND...DONT DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.

PLEASE REPORT FLOODING TO YOUR LOCAL LAW ENFORCEMENT AGENCY WHEN YOU
CAN DO SO SAFELY.

&&

LAT...LON 3025 9669 3024 9674 3020 9674 3011 9685
      3003 9702 3026 9708 3028 9711 3046 9688
      3043 9687 3043 9685 3039 9679 3032 9674
      3032 9669 3029 9665

$$

EMP

The office that day

Everything else NWS Austin/San Antonio, TX issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 23, 8:07 PM CDT	Special Weather Statement	EWX	Val Verde	38 min
Apr 23, 9:05 PM CDT	Special Weather Statement	EWX	Val Verde	25 min
Apr 23, 9:37 PM CDT	Special Weather Statement	EWX	Val Verde	23 min
Apr 23, 11:03 PM CDT	Special Weather Statement	EWX	Val Verde	42 min
Apr 23, 11:12 PM CDT	Special Weather Statement	EWX	Val Verde	33 min
Apr 23, 11:53 PM CDT	Special Weather Statement	EWX	Val Verde	52 min
Apr 24, 2:23 AM CDT	Severe Thunderstorm Warning	EWX	Dimmit, Maverick	52 min
Apr 24, 3:27 AM CDT	Areal Flood Advisory	EWX	Dimmit, Zavala	3 hr
Apr 24, 3:50 AM CDT	Areal Flood Advisory	EWX	Real, Uvalde	3 hr
Apr 24, 3:52 AM CDT	Areal Flood Advisory	EWX	Frio	3 hr
Apr 24, 4:35 AM CDT	Areal Flood Advisory	EWX	Bexar, Caldwell, Comal, Guadalupe, Hays, Wilson	3 hr
Apr 24, 4:38 AM CDT	Severe Thunderstorm Warning	EWX	Edwards, Kinney, Val Verde	52 min
Apr 24, 5:02 AM CDT	Flash Flood Warning	EWX	Bexar	3 hr
Apr 24, 5:04 AM CDT	Areal Flood Advisory	EWX	Medina	3 hr
Apr 24, 5:45 AM CDT	Areal Flood Advisory	EWX	Bastrop	3 hr
Apr 24, 6:22 AM CDT	Areal Flood Advisory	EWX	Bandera, Kendall, Kerr	113 min
Apr 24, 6:30 AM CDT	Flash Flood Warning	EWX	Bastrop, Caldwell	3 hr
Apr 24, 6:48 AM CDT	River Flood Warning	EWX	Bexar	7 hr
Apr 24, 8:26 AM CDT	Areal Flood Advisory	EWX	Bexar	109 min
Apr 24, 9:36 AM CDT	Areal Flood Advisory	EWX	Bastrop, Caldwell	114 min
Apr 24, 10:42 AM CDT	River Flood Warning	EWX	Caldwell, Gonzales	23 hr
Apr 24, 2:15 PM CDT	Flash Flood Watch	EWX	Atascosa, Bastrop, Bexar, Caldwell, DeWitt, Fayette and 8 more	12 hr
Apr 24, 5:16 PM CDT	Special Weather Statement	EWX	Maverick	44 min
Apr 24, 5:49 PM CDT	Special Weather Statement	EWX	Kinney	56 min
Apr 24, 6:15 PM CDT	Special Weather Statement	EWX	Kinney	45 min
Apr 24, 6:18 PM CDT	Special Weather Statement	EWX	Kinney	42 min
Apr 24, 6:22 PM CDT	Severe Thunderstorm Warning	EWX	Kinney, Uvalde	38 min
Apr 24, 6:37 PM CDT	Severe Thunderstorm Warning	EWX	Maverick	23 min
Apr 24, 6:55 PM CDT	Special Weather Statement	EWX	Dimmit	50 min

Nearby

Flash Flood Warnings in Texas, 2015 Every flash flood warning in 2015

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.