Alert archive / Texas / Flash Flood Warnings in 2016

Flash Flood Warning 8, NWS Austin/San Antonio, TX

April 18, 2016Val Verde County, Texas

NWS Austin/San Antonio, TX issued this flash flood warning at Apr 18, 2016, 2:34 AM CDT for Val Verde County, Texas. It was in force for 4 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 18, 2016, 2:34 AM CDT (07:34 UTC)
Expired: Apr 18, 2016, 6:30 AM CDT
In force: 4 hr
Issued by: NWS Austin/San Antonio, TX
Area: Storm-based polygon
Flood severity: None

County Val Verde County, TX

The radar

The Laughlin AFB radar (KDFX), 66 km from the middle of the area, began a volume at 07:38 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 18, 3:00 AM CDT	FLASH FLOOD	Del Rio, TX	NUMEROUS ROADS CLOSED OR UNDERWATER INCLUDING CIENEGAS...INDUSTRIAL BLVD...KINGS WAY...ACADEMY...15TH AND MAIN

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, 7.6 hours before the alert went out and 12 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: 1153 J/kg
Mixed-layer CIN: -33 J/kg
Mixed-layer LCL: 1434 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: 12 m²/s²
0-3 km storm-relative helicity: 103 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.6

Open this sounding in Storm Lab

The text

As transmitted.

397 
WGUS54 KEWX 180734
FFWEWX
TXC465-181130-
/O.NEW.KEWX.FF.W.0008.160418T0734Z-160418T1130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
234 AM CDT MON APR 18 2016

THE NATIONAL WEATHER SERVICE IN AUSTIN SAN ANTONIO HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SOUTHEASTERN VAL VERDE COUNTY IN SOUTH CENTRAL TEXAS...

* UNTIL 630 AM CDT
    
* AT 233 AM CDT...DOPPLER RADAR INDICATED A THUNDERSTORM PRODUCING
  HEAVY RAIN ACROSS THE WARNED OF SOUTHEASTERN VAL VERDE COUNTY. UP
  TO TWO INCHES OF RAIN HAVE ALREADY FALLEN. FLASH FLOODING IS
  EXPECTED TO BEGIN SHORTLY.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  DEL RIO...LAKE VIEW...VAL VERDE PARK...CIENEGAS TERRACE...LAUGHLIN AFB...
  AMISTAD VILLAGE...BOX CANYON-AMISTAD...ROUGH CANYON REC AREA AND
  DEVILS SHORES.

ADDITIONAL RAINFALL AMOUNTS OF 1 TO 2 INCHES ARE POSSIBLE IN THE
WARNED AREA THROUGH 4 AM CDT.

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. MOVE
TO HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS SUBJECT
TO FLOODING WHEN WATER BEGINS RISING.

&&

LAT...LON 2975 10090 2962 10070 2940 10070 2929 10081
      2927 10085 2928 10088 2931 10089 2933 10094
      2935 10095 2937 10101 2944 10106 2946 10106
      2947 10115 2950 10117

$$

MO

1 follow-up statement

980 
WGUS74 KEWX 180821
FFSEWX

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE AUSTIN/SAN ANTONIO TX
321 AM CDT MON APR 18 2016

TXC465-181130-
/O.CON.KEWX.FF.W.0008.000000T0000Z-160418T1130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
VAL VERDE TX-
321 AM CDT MON APR 18 2016

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 630 AM CDT FOR
SOUTHEASTERN VAL VERDE COUNTY...

AT 317 AM CDT...DOPPLER RADAR INDICATED THUNDERSTORMS PRODUCING HEAVY
RAIN ACROSS THE SOUTHEASTERN VAL VERDE COUNTY. RADAR ESTIMATES
SUGGEST THAT BETWEEN 3 AND 4 INCHES OF RAIN HAVE ALREADY FALLEN OVER
AN AREA 2 TO 7 MILES NORTH OF DEL RIO. UP TO 3 INCHES OF RAIN MAY
HAVE FALLEN OVER THE CITY OF DEL RIO. FLASH FLOODING IS IMMINENT IN
AND AROUND THE CITY OF DEL RIO.

SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
DEL RIO...LAKE VIEW...VAL VERDE PARK...CIENEGAS TERRACE...LAUGHLIN AFB...
AMISTAD VILLAGE...BOX CANYON-AMISTAD...ROUGH CANYON REC AREA AND DEVILS
SHORES.

ADDITIONAL RAINFALL AMOUNTS OF 1 TO 2 INCHES ARE POSSIBLE IN
THE WARNED AREA THROUGH 5 AM CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING.

&&

LAT...LON 2975 10090 2962 10070 2940 10070 2929 10081
      2927 10085 2928 10088 2931 10089 2933 10094
      2935 10095 2937 10101 2944 10106 2946 10106
      2947 10115 2950 10117

$$

MO

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 17, 7:15 PM CDT	Special Weather Statement	EWX	Bandera	30 min
Apr 17, 7:32 PM CDT	Severe Thunderstorm Warning	EWX	Bandera, Real	27 min
Apr 17, 7:42 PM CDT	River Flood Warning	EWX	Travis	30 hr
Apr 17, 7:42 PM CDT	River Flood Warning	EWX	Bastrop	46 hr
Apr 17, 7:51 PM CDT	Flash Flood Warning	EWX	Bandera	3 hr
Apr 17, 8:02 PM CDT	Special Weather Statement	EWX	Bandera, Kerr	43 min
Apr 17, 8:46 PM CDT	Special Weather Statement	EWX	Bandera	44 min
Apr 17, 8:54 PM CDT	River Flood Warning	EWX	Bandera	29 hr
Apr 17, 9:11 PM CDT	Flash Flood Warning	EWX	Kendall, Kerr	4 hr
Apr 17, 10:11 PM CDT	River Flood Warning	EWX	Blanco	22 hr
Apr 17, 10:11 PM CDT	River Flood Warning	EWX	Travis	41 hr
Apr 17, 10:11 PM CDT	River Flood Warning	EWX	Bastrop, Fayette	56 hr
Apr 17, 10:11 PM CDT	River Flood Warning	EWX	Fayette	60 hr
Apr 17, 10:14 PM CDT	Areal Flood Advisory	EWX	Bastrop, Lee, Travis, Williamson	3 hr
Apr 17, 11:10 PM CDT	Areal Flood Advisory	EWX	Bandera	3 hr
Apr 17, 11:38 PM CDT	Areal Flood Advisory	EWX	Bastrop, Fayette, Lee	5 hr
Apr 18, 12:24 AM CDT	Areal Flood Advisory	EWX	Travis, Williamson	5 hr
Apr 18, 1:07 AM CDT	Flash Flood Warning	EWX	Bastrop, Fayette, Lee	5 hr
Apr 18, 1:15 AM CDT	Areal Flood Advisory	EWX	Kendall, Kerr	3 hr
Apr 18, 1:40 AM CDT	Special Weather Statement	EWX	Val Verde	50 min
Apr 18, 2:32 AM CDT	Severe Thunderstorm Warning	EWX	Kinney, Val Verde	43 min
Apr 18, 3:04 AM CDT	Special Weather Statement	EWX	Val Verde	41 min
Apr 18, 3:43 AM CDT	Special Weather Statement	EWX	Kinney	47 min
Apr 18, 3:54 AM CDT	Severe Thunderstorm Warning	EWX	Kinney	66 min
Apr 18, 4:11 AM CDT	Flash Flood Warning	EWX	Fayette	12 hr
Apr 18, 4:17 AM CDT	Flash Flood Warning	EWX	Kinney	4 hr
Apr 18, 4:31 AM CDT	Flash Flood Warning	EWX	Bastrop, Lee, Travis, Williamson	7 hr
Apr 18, 5:03 AM CDT	Areal Flood Advisory	EWX	Bandera, Bexar, Blanco, Caldwell, Comal, Guadalupe and 6 more	4 hr
Apr 18, 5:08 AM CDT	Special Weather Statement	EWX	Kinney	52 min
Apr 18, 6:04 AM CDT	Flash Flood Warning	EWX	Kinney, Real, Uvalde	3 hr
Apr 18, 6:19 AM CDT	Flash Flood Warning	EWX	Bexar, Comal, Hays, Kendall	3 hr
Apr 18, 6:52 AM CDT	Flash Flood Warning	EWX	Bandera, Kerr, Medina, Uvalde	3 hr
Apr 18, 7:13 AM CDT	Areal Flood Advisory	EWX	Gonzales, Guadalupe	3 hr
Apr 18, 7:22 AM CDT	Special Weather Statement	EWX	Medina	38 min
Apr 18, 7:48 AM CDT	Areal Flood Advisory	EWX	Fayette, Lavaca	3 hr
Apr 18, 8:30 AM CDT	Flash Flood Warning	EWX	Caldwell, Gonzales, Lavaca	3 hr
Apr 18, 8:52 AM CDT	Areal Flood Advisory	EWX	Bexar, Comal, Gonzales, Guadalupe, Wilson	3 hr
Apr 18, 9:16 AM CDT	Areal Flood Advisory	EWX	Bexar, Comal, Hays	59 min
Apr 18, 9:47 AM CDT	Special Weather Statement	EWX	DeWitt	43 min
Apr 18, 10:17 AM CDT	Areal Flood Advisory	EWX	DeWitt, Karnes	3 hr
Apr 18, 11:32 AM CDT	Areal Flood Advisory	EWX	Caldwell, Gonzales, Lavaca	3 hr
Apr 18, 11:39 AM CDT	Areal Flood Advisory	EWX	Maverick	2 hr
Apr 18, 11:46 AM CDT	Special Weather Statement	EWX	Zavala	44 min
Apr 18, 12:07 PM CDT	Special Weather Statement	EWX	Dimmit	23 min
Apr 18, 12:44 PM CDT	Special Weather Statement	EWX	Dimmit	46 min
Apr 18, 1:44 PM CDT	Special Weather Statement	EWX	Kerr	46 min
Apr 18, 1:48 PM CDT	Special Weather Statement	EWX	Dimmit	42 min
Apr 18, 2:42 PM CDT	River Flood Warning	EWX	DeWitt	4 days
Apr 18, 2:44 PM CDT	Special Weather Statement	EWX	Kendall	46 min
Apr 18, 4:00 PM CDT	Areal Flood Advisory	EWX	Fayette	5 hr

Nearby

Flash Flood Warnings in Texas, 2016 Every 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.