Alert archive / Oklahoma / Special Weather Statements in 2012

Special Weather Statement, NWS Norman, OK

May 20, 2012Alfalfa County, Oklahoma

NWS Norman, OK issued this special weather statement at May 20, 2012, 10:37 PM CDT for Alfalfa County, Oklahoma. It was in force for 38 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
May 20, 2012, 10:37 PM CDT (03:37 UTC)
Expired
May 20, 2012, 11:15 PM CDT
In force
38 min
Issued by
NWS Norman, OK

County Alfalfa County, OK

The radar

The Vance AFB radar (KVNX), 32 km from the middle of the area, began a volume at 03:39 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 text

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

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What forecasters said that day

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

NWS Norman, OK wrote its last area forecast discussion before this special weather statement went out at May 20, 6:46 PM CDT, 3 hours 51 minutes earlier.

Area forecast discussion, May 20, 6:46 PM CDT, 3 hours 51 minutes before
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Hazardous weather outlook, May 20, 11:55 AM CDT, 10 hours 42 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE NORMAN OK
1155 AM CDT SUN MAY 20 2012

OKZ004>048-050>052-TXZ083>090-211000-
HARPER-WOODS-ALFALFA-GRANT-KAY-ELLIS-WOODWARD-MAJOR-GARFIELD-NOBLE-
ROGER MILLS-DEWEY-CUSTER-BLAINE-KINGFISHER-LOGAN-PAYNE-BECKHAM-
WASHITA-CADDO-CANADIAN-OKLAHOMA-LINCOLN-GRADY-MCCLAIN-CLEVELAND-
POTTAWATOMIE-SEMINOLE-HUGHES-HARMON-GREER-KIOWA-JACKSON-TILLMAN-
COMANCHE-STEPHENS-GARVIN-MURRAY-PONTOTOC-COAL-COTTON-JEFFERSON-
CARTER-JOHNSTON-ATOKA-LOVE-MARSHALL-BRYAN-HARDEMAN-FOARD-WILBARGER-
WICHITA-KNOX-BAYLOR-ARCHER-CLAY-
1155 AM CDT SUN MAY 20 2012

THIS HAZARDOUS WEATHER OUTLOOK COVERS NORTHERN...WESTERN...
CENTRAL...AND SOUTHERN OKLAHOMA...AND WESTERN NORTH TEXAS.

.DAY ONE...THIS AFTERNOON AND TONIGHT...

THUNDERSTORM OUTLOOK...
A FEW MARGINALLY SEVERE THUNDERSTORMS WILL BE POSSIBLE ACROSS
SOUTHERN OKLAHOMA AND WESTERN NORTH TEXAS LATE THIS AFTERNOON
AND EVENING.

DISCUSSION...
SCATTERED TO NUMEROUS SHOWERS AND THUNDERSTORMS WILL CONTINUE
TO DEVELOP ACROSS WEST CENTRAL AND CENTRAL OKLAHOMA THROUGH
THE MID AFTERNOON HOURS.  LIMITED INSTABILITY WILL KEEP STORMS
BELOW SEVERE LEVELS...BUT A FEW STORMS WILL PRODUCE SMALL HAIL...
FREQUENT LIGHTNING AND BRIEF HEAVY RAINFALL.

SUNSHINE AND BETTER INSTABILITY ACROSS THE SOUTHERN THIRD OF
OKLAHOMA AND WESTERN NORTH TEXAS MAY RESULT IN ISOLATED TO
WIDELY SCATTERED STORMS BY LATE AFTERNOON.  A WEAK COLD FRONT
AND DIFFERENTIAL HEATING MAY HELP WITH THE DEVELOP OF
STORMS...BUT LARGE SCALE FORCING WILL BE WEAK AT BEST.  IF
STORMS CAN FORM...A FEW MAY PRODUCE HAIL TO THE SIZE OF
QUARTERS ALONG WITH GUSTY WINDS AND HEAVY RAIN.  STORM
INTENSITY WILL DECREASE BY THE MID-EVENING.

PROBABILITY TABLE... VALID THROUGH 700 AM CDT MONDAY MAY 21.
PROBABILITY OF THUNDERSTORMS OCCURRING IN THE
              NWS NORMAN COUNTY WARNING AREA...100 PERCENT.
PROBABILITY OF SEVERE STORMS IF STORMS OCCUR...20 PERCENT.

OTHER HAZARDOUS WEATHER...
NONE.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY...

THUNDERSTORM OUTLOOK...
THUNDERSTORMS CHANCES WILL PERSIST MONDAY AS THE FRONT STALLS ACROSS
SOUTHERN OKLAHOMA ON MONDAY AND THEN BEGINS TO RETREAT
BACK TO THE NORTH MONDAY NIGHT. THE RISK OF SEVERE WEATHER IS
RELATIVELY LOW.

OTHER HAZARDOUS WEATHER...
NONE.

THE NEXT SCHEDULED HAZARDOUS WEATHER OUTLOOK WILL BE ISSUED
5 AM MONDAY.

In the hours before

Local storm report, May 20, 5:05 PM CDT, 5 hours 32 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
505 PM CDT SUN MAY 20 2012

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0503 PM     HAIL             4 N ELECTRA             34.09N 98.92W
05/20/2012  E1.00 INCH       WICHITA            TX   PUBLIC

&&

JPIKE
Special weather statement, May 20, 5:44 PM CDT, 4 hours 53 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
544 PM CDT SUN MAY 20 2012

TXZ085-088-202330-
BAYLOR TX-WILBARGER TX-
544 PM CDT SUN MAY 20 2012

...SIGNIFICANT WEATHER ADVISORY FOR BAYLOR AND SOUTHEASTERN
WILBARGER COUNTIES UNTIL 630 PM CDT...

AT 545 PM CDT...A STRONG THUNDERSTORM WAS LOCATED 4 MILES NORTH
OF LAKE KEMP... MOVING SOUTHEAST AT 20 MPH.

HAZARDS INCLUDE...
HAIL UP TO ONE-HALF INCH DIAMETER...
WIND GUSTS TO 50 MPH...
FREQUENT CLOUD TO GROUND LIGHTNING...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MONITOR THE WEATHER SITUATION CLOSELY AND BE ALERT FOR THREATENING
WEATHER CONDITIONS.

IF ON OR NEAR LAKE KEMP AND SANTA ROSA LAKE...GET OUT OF THE WATER
AND MOVE INDOORS OR INSIDE A VEHICLE. REMEMBER...LIGHTNING CAN
STRIKE OUT TO 15 MILES FROM THE PARENT THUNDERSTORM. IF YOU CAN HEAR
THUNDER... YOU ARE CLOSE ENOUGH TO BE STRUCK BY LIGHTNING. MOVE TO
SAFE SHELTER NOW. DO NOT BE CAUGHT ON THE WATER IN A THUNDERSTORM.

&&

LAT...LON 3370 9937 3397 9922 3390 9897 3383 9896
      3346 9895
TIME...MOT...LOC 2245Z 294DEG 16KT 3385 9918

MBS

The office that day

Everything else NWS Norman, OK issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 20, 8:06 PM CDTSpecial Weather StatementOUNDewey24 min
May 20, 10:22 PM CDTSpecial Weather StatementOUNAlfalfa38 min
May 20, 11:45 PM CDTSpecial Weather StatementOUNGarfield30 min
May 21, 12:13 AM CDTSpecial Weather StatementOUNGarfield32 min
May 21, 12:40 AM CDTSpecial Weather StatementOUNCanadian35 min
May 21, 12:44 AM CDTSpecial Weather StatementOUNGarfield31 min
May 21, 1:30 AM CDTSpecial Weather StatementOUNOklahoma30 min
May 21, 1:46 AM CDTSpecial Weather StatementOUNOklahoma29 min
May 21, 4:39 AM CDTSpecial Weather StatementOUNGreer36 min
May 21, 5:22 AM CDTSpecial Weather StatementOUNGreer38 min
May 21, 5:48 AM CDTSpecial Weather StatementOUNGreer, Washita27 min
May 21, 6:25 AM CDTSpecial Weather StatementOUNGreer35 min
May 21, 6:51 AM CDTSpecial Weather StatementOUNGreer, Harmon24 min
May 21, 7:27 AM CDTSpecial Weather StatementOUNHarmon, Jackson, Tillman33 min
May 21, 7:59 AM CDTSpecial Weather StatementOUNHarmon, Jackson, Tillman31 min
May 21, 8:25 AM CDTSpecial Weather StatementOUNHarmon, Jackson, Tillman35 min
May 21, 8:53 AM CDTSpecial Weather StatementOUNHarmon37 min
May 21, 11:01 AM CDTAreal Flood AdvisoryOUNBeckham, Greer, Harmon, Jackson3 hr
May 21, 9:30 AM CDTSpecial Weather StatementOUNHardeman, Wilbarger30 min
May 21, 10:03 AM CDTSpecial Weather StatementOUNBaylor27 min

Nearby

Special Weather Statements in Oklahoma, 2012Every special weather statement 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; radar from the NEXRAD Level II archive.