Alert archive / Texas / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 89, NWS Midland/Odessa, TX

April 30, 2012Brewster County, Pecos County, Texas

NWS Midland/Odessa, TX issued this severe thunderstorm warning at Apr 30, 2012, 4:31 PM CDT for Brewster County, Pecos County, Texas. It was in force for 59 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Apr 30, 2012, 4:31 PM CDT (21:31 UTC)
Expired: Apr 30, 2012, 5:30 PM CDT
In force: 59 min
Issued by: NWS Midland/Odessa, TX
Area: Storm-based polygon

Counties Brewster County, TX, Pecos County, TX

The radar

The Midland/Odessa radar (KMAF), 140 km from the middle of the area, began a volume at 21:33 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Apr 30, 2:39 PM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Midland Regional, TX (KMAF), launched 12:00Z, 9.5 hours before the alert went out and 140 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: 1590 J/kg
Mixed-layer CIN: -246 J/kg
Mixed-layer LCL: 1149 m above ground
0-6 km bulk shear: 29 kt
0-1 km storm-relative helicity: 155 m²/s²
0-3 km storm-relative helicity: 184 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

050 
WUUS54 KMAF 302131
SVRMAF
TXC043-371-302230-
/O.NEW.KMAF.SV.W.0089.120430T2131Z-120430T2230Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MIDLAND/ODESSA TX
431 PM CDT MON APR 30 2012

THE NATIONAL WEATHER SERVICE IN MIDLAND HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  WESTERN PECOS COUNTY IN SOUTHWEST TEXAS...
  NORTH CENTRAL BREWSTER COUNTY IN SOUTHWEST TEXAS...

* UNTIL 530 PM CDT

* AT 422 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS DETECTED 
  SEVERAL SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER SIZE HAIL.
  A LINE OF SEVERE THUNDERSTORMS STRETCHED FROM NEAR FORT STOCKTON 
  SOUTH TO OPEN COUNTRY OF NORTHCENTRAL BREWSTER COUNTY. A COUPLE OF 
  SEVERE THUNDERSTORMS WERE NEAR COYANOSA IN WESTERN PECOS COUNTY. 
  ALL OF THE STORMS ARE MOVING EAST AT 10 MPH.

* THE SEVERE THUNDERSTORM WILL AFFECT THE FOLLOWING LOCATIONS...
  OPEN COUNTRY OF WESTERN PECOS COUNTY...
  HIGHWAY 385 SOUTH OF FORT STOCKTON...
  COYANOSA...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IN ADDITION TO LARGE HAIL AND DAMAGING WINDS... DEADLY CLOUD TO
GROUND LIGHTNING IS OCCURRING WITH THIS STORM. REMEMBER...IF YOU CAN
HEAR THUNDER... YOU ARE CLOSE ENOUGH TO BE STRUCK BY LIGHTNING. SEEK
SAFE SHELTER NOW.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT
MONDAY EVENING FOR SOUTHWESTERN TEXAS.

&&

LAT...LON 3135 10302 3111 10260 3091 10258 3063 10253
      3018 10277 3049 10357 3065 10341 3121 10315
TIME...MOT...LOC 2126Z 259DEG 20KT 3066 10298

$$

1 follow-up statement

842 
WWUS54 KMAF 302158
SVSMAF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MIDLAND/ODESSA TX
458 PM CDT MON APR 30 2012

TXC043-371-302230-
/O.CON.KMAF.SV.W.0089.000000T0000Z-120430T2230Z/
PECOS TX-BREWSTER TX-
458 PM CDT MON APR 30 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 530 PM CDT
FOR NORTH CENTRAL BREWSTER AND WESTERN PECOS COUNTIES...

AT 451 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS CONTINUED TO
DETECT A LINE OF SEVERE THUNDERSTORMS ALONG HIGHWAY 385 SOUTH OF 
FORT STOCKTON SOUTH TO THE OPEN COUNTRY OF NORTHCENTRAL BREWSTER COUNTY.
ANOTHER SEVERE THUNDERSTORM WAS ALONG STATE HIGHWAY 18 25 MILES NORTH
OF FORT STOCKTON. THESE STORMS WERE MOVING TO THE EAST AT 20 MPH. THESE
STORMS ARE CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND DAMAGING WINDS 
IN EXCESS OF 60 MPH.  

SOME LOCATIONS AFFECTED BY THE SEVERE THUNDERSTORM INCLUDE...
HIGHWAY 385 SOUTH OF FORT STOCKTON SOUTH TO OPEN COUNTRY OF NORTHCENTRAL
BREWSTER COUNTY...
HIGHWAY 18 25 MILES NORTH OF FORT STOCKTON...
HIGHWAY 285 SOUTHEAST OF FORT STOCKTON...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IN ADDITION TO LARGE HAIL AND DAMAGING WINDS... DEADLY CLOUD TO
GROUND LIGHTNING IS OCCURRING WITH THIS STORM. REMEMBER... IF YOU CAN
HEAR THUNDER... YOU ARE CLOSE ENOUGH TO BE STRUCK BY LIGHTNING. SEEK
SAFE SHELTER NOW.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1000 PM CDT
MONDAY EVENING FOR SOUTHWESTERN TEXAS.

&&

LAT...LON 3135 10302 3111 10260 3091 10258 3063 10253
      3018 10277 3049 10357 3065 10341 3121 10315
TIME...MOT...LOC 2153Z 259DEG 20KT 3069 10281

$$

The office that day

Everything else NWS Midland/Odessa, TX issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 30, 5:20 AM CDT	Fire Weather Watch	MAF		8 hr
Apr 30, 5:20 AM CDT	Fire Weather Watch	MAF		49 hr
Apr 30, 1:19 PM CDT	Red Flag Warning	MAF		32 hr
Apr 30, 2:30 PM CDT	Severe Thunderstorm Warning	MAF	Pecos	60 min
Apr 30, 3:28 PM CDT	Severe Thunderstorm Warning	MAF	Brewster, Jeff Davis, Pecos	62 min
Apr 30, 4:09 PM CDT	Severe Thunderstorm Warning	MAF	Brewster	66 min
Apr 30, 4:38 PM CDT	Severe Thunderstorm Warning	MAF	Brewster	52 min
Apr 30, 5:04 PM CDT	Severe Thunderstorm Warning	MAF	Borden, Scurry	56 min
Apr 30, 5:16 PM CDT	Severe Thunderstorm Warning	MAF	Brewster	59 min
Apr 30, 5:24 PM CDT	Severe Thunderstorm Warning	MAF	Brewster	51 min
Apr 30, 5:57 PM CDT	Severe Thunderstorm Warning	MAF	Borden, Scurry	63 min
Apr 30, 5:59 PM CDT	Areal Flood Advisory	MAF	Brewster	3 hr
Apr 30, 6:16 PM CDT	Severe Thunderstorm Warning	MAF	Brewster	39 min
Apr 30, 6:17 PM CDT	Severe Thunderstorm Warning	MAF	Howard, Martin	58 min
Apr 30, 6:40 PM CDT	Severe Thunderstorm Warning	MAF	Borden, Scurry	65 min
Apr 30, 6:52 PM CDT	Flash Flood Warning	MAF	Borden, Scurry	3 hr

Nearby

Severe Thunderstorm Warnings in Texas, 2012 Every severe thunderstorm warning in 2012

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.