Alert archive / Texas / Wind Chill Advisories in 2011

Wind Chill Advisory 3, NWS Fort Worth, TX

February 9, 201138 counties in Texas

NWS Fort Worth, TX issued this wind chill advisory at Feb 9, 2011, 11:24 AM CST for 38 counties in Texas. It took effect at Feb 9, 2011, 6:00 PM CST. It was in force for 12 hr.

The area

The counties it named.

The facts

Issued: Feb 9, 2011, 11:24 AM CST (17:24 UTC)
In effect from: Feb 9, 2011, 6:00 PM CST
Expired: Feb 10, 2011, 6:00 AM CST
In force: 12 hr
Issued by: NWS Fort Worth, TX

All 38 counties

Bosque County, TX, Collin County, TX, Comanche County, TX, Cooke County, TX, Coryell County, TX, Dallas County, TX, Delta County, TX, Denton County, TX, Eastland County, TX, Ellis County, TX, Erath County, TX, Fannin County, TX, Grayson County, TX, Hamilton County, TX, Henderson County, TX, Hill County, TX, Hood County, TX, Hopkins County, TX, Hunt County, TX, Jack County, TX, Johnson County, TX, Kaufman County, TX, Lamar County, TX, Lampasas County, TX, McLennan County, TX, Mills County, TX, Montague County, TX, Navarro County, TX, Palo Pinto County, TX, Parker County, TX, Rains County, TX, Rockwall County, TX, Somervell County, TX, Stephens County, TX, Tarrant County, TX, Van Zandt County, TX, Wise County, TX, Young County, TX

The radar

The Dallas/Ft Worth radar (KFWS), 10 km from the middle of the area, began a volume at 17:26 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 nearest sounding before it

Norman, OK (KOUN), launched 12:00Z, 5.4 hours before the alert went out and 288 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 535 m above ground
0-6 km bulk shear: 77 kt
0-1 km storm-relative helicity: 248 m²/s²
0-3 km storm-relative helicity: 714 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this wind chill advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Fort Worth, TX wrote its last area forecast discussion before this wind chill advisory went out at Feb 8, 5:51 PM CST, 17 hours 33 minutes earlier.

Area forecast discussion, Feb 8, 5:51 PM CST, 17 hours 33 minutes before

<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Service Notice</title>
  <link rel="stylesheet" href="index.css">
</head>
<body>
  <main class="wrap">
    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
      <p id="message2">
        Please try again in a few minutes.
      </p>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>

Hazardous weather outlook, Feb 8, 2:36 PM CST, 20 hours 48 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE FORT WORTH TX
236 PM CST TUE FEB 8 2011

TXZ091>095-100>107-115>123-129>135-141>148-156>162-174-175-091200-
MONTAGUE-COOKE-GRAYSON-FANNIN-LAMAR-YOUNG-JACK-WISE-DENTON-COLLIN-
HUNT-DELTA-HOPKINS-STEPHENS-PALO PINTO-PARKER-TARRANT-DALLAS-
ROCKWALL-KAUFMAN-VAN ZANDT-RAINS-EASTLAND-ERATH-HOOD-SOMERVELL-
JOHNSON-ELLIS-HENDERSON-COMANCHE-MILLS-HAMILTON-BOSQUE-HILL-NAVARRO-
FREESTONE-ANDERSON-LAMPASAS-CORYELL-BELL-MCLENNAN-FALLS-LIMESTONE-
LEON-MILAM-ROBERTSON-
236 PM CST TUE FEB 8 2011

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH TEXAS.

.DAY ONE...THROUGH TONIGHT.

A WINTER STORM WARNING IN EFFECT ALONG AND NORTH OF A COMANCHE...
TO CLEBURNE...TO ATHENS LINE AFTER MIDNIGHT. A WINTRY MIX WILL
LIKELY START OCCUR AFTER MIDNIGHT...THEN CHANGE TO ALL SNOW BY
DAYBREAK OR SHORTLY THEREAFTER. SNOWFALL ACCUMULATIONS THROUGH
DAYBREAK OF 1 TO 3 INCHES WILL BE POSSIBLE FROM EASTLAND TO
BOWIE...WITH LESSER AMOUNTS SOUTHEAST TO A PARIS...DALLAS-FORT
WORTH...LAMPASAS LINE. OF TRAVEL CONDITIONS ACROSS THE NORTHWEST
HALF OF NORTH TEXAS WILL DETERIORATE QUICKLY BY DAYBREAK.

A WINTER WEATHER ADVISORY IS IN EFFECT FOR THE REMAINDER OF NORTH
TEXAS SOUTH OF THE WARNING AREA. A WINTRY MIX OF FREEZING RAIN OR
SLEET COULD OCCUR ACROSS SOUTHWESTERN NORTH TEXAS BEFORE DAYBREAK...
YET WORST CONDITIONS SHOULD OCCUR ON WEDNESDAY. TOTAL ICE OR SLEET
ACCUMULATIONS OF LESS THAN AN INCH ARE POSSIBLE JUST BEFORE DAYBREAK
ACROSS THE SOUTHWEST.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY.

THE WINTER STORM WARNING WILL CONTINUE THROUGH 6 PM WEDNESDAY...AS
WILL THE WINTER WEATHER ADVISORY. PRECIPITATION IS EXPECTED TO MOVE
EAST OF THE NORTH TEXAS AREA BY WEDNESDAY EVENING. TOTAL SLEET AND
SNOW AMOUNTS WILL RANGE FROM 3 TO 5 INCHES ACROSS THE RED RIVER
VALLEY...TO BETWEEN 1 TO 3 INCHES ACROSS THE SOUTHERN WARNING
AREA. SLEET AND ICE ACCUMULATIONS UPWARD TO ONE TENTH OF INCH ARE
POSSIBLE ACROSS THE ADVISORY AREA OVER SOUTHERN NORTH TEXAS...ALONG
WITH AN ADDITIONAL INCH OF SNOW BEFORE THE SYSTEM DEPARTS DURING
THE AFTERNOON HOURS.

WIND CHILLS WILL BE BELOW ZERO FROM 7 AM TO 3 PM WEDNESDAY ALONG
AND NORTHWEST OF A CISCO...MINERAL WELLS...DECATUR...GAINESVILLE
LINE. A WIND CHILL ADVISORY IS EFFECT FOR THAT PART OF NORTH
TEXAS. ELSEWHERE...WIND CHILLS WILL FALL INTO THE SINGLE DIGITS AS
TEMPERATURES FALL THROUGH THE 20S AND INTO THE TEENS...WHILE NORTH
WINDS 20 TO 30 MPH AND GUSTY OCCUR BEHIND AN ARCTIC COLD FRONT.

BITTER COLD WIND CHILLS BELOW ZERO WILL LIKELY OCCUR ACROSS AREAS
ALONG AND NORTH OF INTERSTATE 20 WEDNESDAY NIGHT AND THURSDAY
MORNING. A HARD FREEZE WILL ALSO OCCUR AND RESIDENTS SHOULD TAKE
APPROPRIATE ACTIONS NOW TO PROTECT PIPES AND OUTSIDE PETS.

.SPOTTER INFORMATION STATEMENT...
SPOTTER IS NOT ANTICIPATED. HOWEVER...REAL-TIME REPORTS OF WINTER
WEATHER TO THE NATIONAL WEATHER SERVICE ARE HIGHLY ENCOURAGED
LATE TONIGHT INTO EARLY WEDNESDAY.

05/

The office that day

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

Issued	Product	Office	Counties	Lasted
Feb 8, 10:05 PM CST	Wind Advisory	FWD	Anderson, Bell, Bosque, Collin, Comanche, Cooke and 40 more	17 hr
Feb 9, 8:57 AM CST	Special Weather Statement	FWD	Collin, Fannin, Hunt	78 min
Feb 9, 11:04 AM CST	Hard Freeze Warning	FWD	Collin, Cooke, Dallas, Delta, Denton, Fannin and 13 more	19 hr

Nearby

Wind Chill Advisories in Texas, 2011 Every wind chill advisory 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.