Alert archive / Texas / Flash Flood Warnings in 2015

Flash Flood Warning 39, NWS Brownsville, TX

June 17, 20154 counties in Texas

NWS Brownsville, TX issued this flash flood warning at Jun 17, 2015, 9:57 PM CDT for 4 counties in Texas. It was in force for 2 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: Jun 17, 2015, 9:57 PM CDT (02:57 UTC)
Expired: Jun 18, 2015, 12:00 AM CDT
In force: 2 hr
Issued by: NWS Brownsville, TX
Area: Storm-based polygon
Flood severity: None

Counties Brooks County, TX, Hidalgo County, TX, Jim Hogg County, TX, Starr County, TX

The radar

The Brownsville radar (KBRO), 137 km from the middle of the area, began a volume at 02:58 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
Jun 17, 11:45 PM CDT	HEAVY RAIN 2	Mccook, TX	A FOOT OF WATER ALONG FM 490 WEST OF HIGHWAY 681

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

The nearest sounding before it

Brownsville Intl, TX (KBRO), launched 00:00Z, 3.0 hours before the alert went out and 139 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: 2445 J/kg
Mixed-layer CIN: -2 J/kg
Mixed-layer LCL: 798 m above ground
0-6 km bulk shear: 21 kt
0-1 km storm-relative helicity: -2 m²/s²
0-3 km storm-relative helicity: 64 m²/s²
Significant tornado parameter: -0.0
Supercell composite: -0.1

Open this sounding in Storm Lab

The text

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

049 
WGUS54 KBRO 180257
FFWBRO
TXC047-215-247-427-180500-
/O.NEW.KBRO.FF.W.0039.150618T0257Z-150618T0500Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE BROWNSVILLE TX
957 PM CDT WED JUN 17 2015

THE NATIONAL WEATHER SERVICE IN BROWNSVILLE  HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  NORTHWESTERN HIDALGO COUNTY IN DEEP SOUTH TEXAS...
  SOUTHEASTERN JIM HOGG COUNTY IN DEEP SOUTH TEXAS...
  SOUTHWESTERN BROOKS COUNTY IN DEEP SOUTH TEXAS...
  NORTHEASTERN STARR COUNTY IN DEEP SOUTH TEXAS...

* UNTIL MIDNIGHT CDT
    
* AT 955 PM CDT...DOPPLER RADAR INDICATED A THUNDERSTORM PRODUCING
  HEAVY RAIN ACROSS THE WARNED AREA. UP TO THREE INCHES OF RAIN HAVE 
  ALREADY FALLEN ACROSS PORTIONS OF SOUTHERN JIM HOGG COUNTY. FLASH 
  FLOODING IS EXPECTED TO BEGIN SHORTLY.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  AGUA NUEVA...MCCOOK...EL COYOTE RANCH AIRPORT...SAN RAFAEL RANCH
  AIRPORT...SAN ISIDRO...LA REFORMA...RACHAL...PUESTA DEL SOL
  AIRPORT...PUERTO RICO...SANTA CATARINA...SANTA ELENA...LA GLORIA...
  DELMITA AND DIAMOND O RANCH AIRPORT.

ADDITIONAL RAINFALL AMOUNTS OF TWO TO THREE INCHES ARE POSSIBLE IN 
THE WARNED AREA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MOVE TO HIGHER GROUND NOW. ACT QUICKLY TO PROTECT YOUR LIFE.

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

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

&&

LAT...LON 2690 9813 2642 9835 2658 9886 2706 9853

$$

63

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 17, 7:09 PM CDT	Special Weather Statement	BRO	Jim Hogg	51 min
Jun 17, 7:26 PM CDT	Areal Flood Advisory	BRO	Zapata	2 hr
Jun 17, 7:51 PM CDT	Special Weather Statement	BRO	Brooks	39 min
Jun 17, 8:01 PM CDT	Areal Flood Advisory	BRO	Brooks	119 min
Jun 17, 8:25 PM CDT	Severe Thunderstorm Warning	BRO	Starr	35 min
Jun 17, 8:49 PM CDT	Flash Flood Warning	BRO	Jim Hogg, Starr, Zapata	116 min
Jun 17, 10:38 PM CDT	Areal Flood Advisory	BRO	Hidalgo, Starr	112 min
Jun 17, 11:38 PM CDT	Areal Flood Advisory	BRO	Hidalgo	112 min
Jun 18, 12:31 AM CDT	Flash Flood Warning	BRO	Hidalgo	119 min
Jun 18, 12:53 AM CDT	Areal Flood Advisory	BRO	Hidalgo, Willacy	52 min
Jun 18, 1:45 AM CDT	Areal Flood Advisory	BRO	Hidalgo	2 hr
Jun 18, 3:42 AM CDT	Areal Flood Advisory	BRO	Hidalgo	108 min
Jun 18, 4:29 AM CDT	Flash Flood Watch	BRO	Brooks, Hidalgo, Jim Hogg, Starr, Zapata	15 hr
Jun 18, 11:42 AM CDT	Special Weather Statement	BRO	Hidalgo	48 min
Jun 18, 2:10 PM CDT	Special Weather Statement	BRO	Willacy	50 min
Jun 18, 4:35 PM CDT	Areal Flood Advisory	BRO	Kenedy, Willacy	115 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.