Alert archive / Texas / Wind Chill Warnings in 2011

Wind Chill Warning 2, NWS Amarillo, TX

February 9, 201120 counties in Texas; Beaver County, Cimarron County, Texas County, Oklahoma

NWS Amarillo, TX issued this wind chill warning at Feb 9, 2011, 7:02 AM CST for 20 counties in Texas; Beaver County, Cimarron County, Texas County, Oklahoma. It was in force for 5 hr. 5 reports came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
Feb 9, 2011, 7:02 AM CST (13:02 UTC)
Expired
Feb 9, 2011, 12:00 PM CST
In force
5 hr
Issued by
NWS Amarillo, TX
All 23 counties

Beaver County, OK, Cimarron County, OK, Texas County, OK, Armstrong County, TX, Carson County, TX, Collingsworth County, TX, Dallam County, TX, Deaf Smith County, TX, Donley County, TX, Gray County, TX, Hansford County, TX, Hartley County, TX, Hemphill County, TX, Hutchinson County, TX, Lipscomb County, TX, Moore County, TX, Ochiltree County, TX, Oldham County, TX, Potter County, TX, Randall County, TX, Roberts County, TX, Sherman County, TX, Wheeler County, TX

The radar

The Amarillo radar (KAMA), 66 km from the middle of the area, began a volume at 13:08 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

TimeReportWhereRemark
Feb 9, 7:12 AM CSTSNOW 6Borger, TX
Feb 9, 7:30 AM CSTSNOW 3.5Sunray, TX
Feb 9, 7:44 AM CSTSNOW 51 W Sanford, TX
Feb 9, 9:25 AM CSTSNOW 7.5Panhandle, TX
Feb 9, 10:53 AM CSTSNOW 28 Ssw Romero, TX

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

The nearest sounding before it

Dodge City, (KDDC), launched 12:00Z, 1.0 hours before the alert went out and 260 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, Dodge City, at 12:00Z on 2011-02-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, Dodge City, at 12:00Z on 2011-02-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -21 square meters per square second.1939587897Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
758 m above ground
0-6 km bulk shear
33 kt
0-1 km storm-relative helicity
-21 m²/s²
0-3 km storm-relative helicity
146 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.

726 
WWUS44 KAMA 091302
WSWAMA

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE AMARILLO TX
702 AM CST WED FEB 9 2011

OKZ001>003-TXZ001>020-091800-
/O.CAN.KAMA.WS.W.0002.000000T0000Z-110209T1800Z/
/O.NEW.KAMA.WC.W.0002.110209T1302Z-110209T1800Z/
CIMARRON-TEXAS-BEAVER-DALLAM-SHERMAN-HANSFORD-OCHILTREE-LIPSCOMB-
HARTLEY-MOORE-HUTCHINSON-ROBERTS-HEMPHILL-OLDHAM-POTTER-CARSON-
GRAY-WHEELER-DEAF SMITH-RANDALL-ARMSTRONG-DONLEY-COLLINGSWORTH-
INCLUDING THE CITIES OF...BOISE CITY...KEYES...GUYMON...BEAVER...
FORGAN...DALHART...STRATFORD...SPEARMAN...GRUVER...PERRYTON...
BOOKER...HIGGINS...FOLLETT...HARTLEY...CHANNING...DUMAS...
BORGER...MIAMI...CANADIAN...VEGA...AMARILLO...PANHANDLE...
WHITE DEER...PAMPA...SHAMROCK...WHEELER...HEREFORD...CANYON...
CLAUDE...CLARENDON...WELLINGTON
702 AM CST WED FEB 9 2011

...WIND CHILL WARNING IN EFFECT UNTIL NOON CST TODAY...
...WINTER STORM WARNING IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN AMARILLO HAS ISSUED A WIND CHILL
WARNING...WHICH IS IN EFFECT UNTIL NOON CST TODAY FOR THE TEXAS AND
OKLAHOMA PANHANDLES. THE WINTER STORM WARNING HAS BEEN CANCELLED FOR
THIS SAME AREA.

* TIMING: VERY COLD AIR WILL REMAIN ACROSS THE TEXAS AND OKLAHOMA
  PANHANDLES THIS MORNING. NORTH WINDS OF 15 TO 25 MPH WILL DECREASE
  TO 10 TO 15 MPH BY THIS AFTERNOON.

* MAIN IMPACT: THE COMBINATION OF TEMPERATURES RANGING FROM 5 BELOW
  TO 5 DEGREES ABOVE ZERO AND BREEZY NORTH WINDS OF 15 TO 25 MPH WILL
  RESULT IN DANGEROUS WIND CHILL VALUES OF 10 TO 20 DEGREES BELOW
  ZERO ACROSS THE TEXAS AND OKLAHOMA PANHANDLES THIS MORNING.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WIND CHILL WARNING MEANS THE COMBINATION OF VERY COLD AIR AND
STRONG WINDS WILL CREATE DANGEROUSLY LOW WIND CHILL VALUES. THIS
WILL RESULT IN FROST BITE AND LEAD TO HYPOTHERMIA OR DEATH IF
PRECAUTIONS ARE NOT TAKEN.

&&

$$

CLK
1 follow-up statement
165 
WWUS44 KAMA 091754
WSWAMA

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE AMARILLO TX
1154 AM CST WED FEB 9 2011

OKZ001>003-TXZ001>020-091900-
/O.EXP.KAMA.WC.W.0002.000000T0000Z-110209T1800Z/
CIMARRON-TEXAS-BEAVER-DALLAM-SHERMAN-HANSFORD-OCHILTREE-LIPSCOMB-
HARTLEY-MOORE-HUTCHINSON-ROBERTS-HEMPHILL-OLDHAM-POTTER-CARSON-
GRAY-WHEELER-DEAF SMITH-RANDALL-ARMSTRONG-DONLEY-COLLINGSWORTH-
INCLUDING THE CITIES OF...BOISE CITY...KEYES...GUYMON...BEAVER...
FORGAN...DALHART...STRATFORD...SPEARMAN...GRUVER...PERRYTON...
BOOKER...HIGGINS...FOLLETT...HARTLEY...CHANNING...DUMAS...
BORGER...MIAMI...CANADIAN...VEGA...AMARILLO...PANHANDLE...
WHITE DEER...PAMPA...SHAMROCK...WHEELER...HEREFORD...CANYON...
CLAUDE...CLARENDON...WELLINGTON
1154 AM CST WED FEB 9 2011

...WIND CHILL WARNING WILL EXPIRE AT NOON CST TODAY...

THE WIND CHILL WARNING WILL EXPIRE AT NOON CST TODAY FOR ALL OF THE
TEXAS AND OKLAHOMA PANHANDLES. WINDS HAVE DIMINISHED AND TEMPERATURES
ARE GENERALLY NEAR OR ABOVE 10 DEGREES. HOWEVER...FOR MUCH OF THE DAY
WIND CHILL VALUES WILL STAY NEAR ZERO DEGREES.


$$

JOHNSON

Nearby

Wind Chill Warnings in Texas, 2011Wind Chill Warnings in Oklahoma, 2011Every wind chill warning in 2011

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.