Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 50, NWS Norman, OK

April 27, 20144 counties in Oklahoma

NWS Norman, OK issued this severe thunderstorm warning at Apr 27, 2014, 5:13 AM CDT for 4 counties in Oklahoma. It was in force for 47 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Apr 27, 2014, 5:13 AM CDT (10:13 UTC)
Expired: Apr 27, 2014, 6:00 AM CDT
In force: 47 min
Issued by: NWS Norman, OK
Area: Storm-based polygon
Hail: 1.25 in
Wind: 60.0 mph

Counties Comanche County, OK, Jackson County, OK, Kiowa County, OK, Tillman County, OK

The radar

The Altus AFB radar (KFDR), 30 km from the middle of the area, began a volume at 10:14 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 00:00Z, 10.2 hours before the alert went out and 155 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: 1087 J/kg
Mixed-layer CIN: -181 J/kg
Mixed-layer LCL: 1782 m above ground
0-6 km bulk shear: 36 kt
0-1 km storm-relative helicity: 129 m²/s²
0-3 km storm-relative helicity: 235 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.7

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning 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 severe thunderstorm warning went out at Apr 27, 3:53 AM CDT, 1 hour 20 minutes earlier.

Area forecast discussion, Apr 27, 3:53 AM CDT, 1 hour 20 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORMAN OK
353 AM CDT SUN APR 27 2014

.DISCUSSION...
PRIMARY IMPACTS TODAY WILL BE WILDFIRE DANGER/WINDY CONDITIONS
BEHIND DRYLINE. WE ADDED A FEW COUNTIES OF CENTRAL OKLAHOMA TO THE
WIND ADVISORY...WHERE WINDIEST PART OF THE DAY WILL BE DURING
AFTERNOON HOURS. WITH THE STRONGEST WINDS TO OUR WEST BUT
IMPACTING FAR WESTERN AND SOUTHWEST PARTS OF CWA...AREAS OF
BLOWING DUST THAT WILL REDUCE VISIBILITIES WILL BE ADDED TO
FORECAST. CENTRAL PARTS OF OKLAHOMA COULD STILL SEE SOME BLOWING
DUST...WITH A HAZY/COLORFUL SUNSET LIKELY.

AS FAR AS THUNDERSTORMS...THE OVERALL IDEA OF FINE-SCALE MODELS IS
TO HAVE ISOLATED AND DISORGANIZED DEVELOPMENT NEAR AND AHEAD OF
DRYLINE THROUGH SUNRISE. THEREAFTER...ALL MODELS POINT TO
SCATTERED STORM DEVELOPMENT ALONG AND JUST EAST OF INTERSTATE-35.
TIMING IS SLIGHTLY DIFFERENT AMONG MODELS...BUT GENERALLY THE
DRYLINE AND RISK FOR STORM DEVELOPMENT WILL BE EAST OF OKC METRO
AND INTERSTATE-35 AFTER 10 AM. AS FAR AS SEVERE STORMS...THERE
WILL BE A THREAT FOR HAIL UP TO GOLFBALL SIZE WITH THE STRONGEST
STORMS...AND THOSE WILL BE VERY ISOLATED. GREATER RISK FOR
ORGANIZED STORMS WILL BE WELL EAST OF INTERSTATE-35 EARLY THIS
AFTERNOON.

COOLER TODAY AND MUCH COOLER BY TUESDAY AND WEDNESDAY. THERE IS
THE POSSIBILITY OF PERIODIC ELEVATED SHOWERS ACROSS MAINLY THE
NORTHERN HALF OF OKLAHOMA MONDAY AND TUESDAY AS MID-LEVEL THERMAL
TROUGHS ROTATE AROUND LARGE UPPER LOW. ALTHOUGH WE MAINTAIN
NORTHWESTERLY FLOW TOWARD END OF WEEK...WE SHOULD SEE TEMPERATURES
MODERATE CLOSER TO AVERAGE.

&&

.PRELIMINARY POINT TEMPS/POPS...
OKLAHOMA CITY OK  81  50  75  48 /  40   0  20  10
HOBART OK         81  48  77  46 /  10   0  10  10
WICHITA FALLS TX  84  51  81  49 /  20   0   0  10
GAGE OK           77  46  71  42 /  10  10  20  10
PONCA CITY OK     83  49  74  42 /  40   0  20  10
DURANT OK         85  55  79  51 /  40  10   0  10

&&

.OUN WATCHES/WARNINGS/ADVISORIES...
OK...RED FLAG WARNING FROM 10 AM THIS MORNING TO 10 PM CDT THIS
     EVENING FOR OKZ004>024-033>038-044.

     WIND ADVISORY FROM 10 AM THIS MORNING TO 8 PM CDT THIS EVENING
     FOR OKZ004>030-033>041-044>046-050.

TX...RED FLAG WARNING FROM 10 AM THIS MORNING TO 10 PM CDT THIS
     EVENING FOR TXZ083>090.

     WIND ADVISORY FROM 10 AM THIS MORNING TO 8 PM CDT THIS EVENING
     FOR TXZ083>090.

&&

23/11

Hazardous weather outlook, Apr 27, 5:10 AM CDT, 3 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE NORMAN OK
510 AM CDT SUN APR 27 2014

OKZ004>048-050>052-TXZ083>090-281030-
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-
510 AM CDT SUN APR 27 2014

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTHERN...
WESTERN...CENTRAL...AND SOUTHERN OKLAHOMA...AND WESTERN NORTH
TEXAS.

.DAY ONE...TODAY AND TONIGHT...

.THUNDERSTORMS...
SEVERE THUNDERSTORMS WILL BE POSSIBLE THIS MORNING AND EARLY
AFTERNOON OVER OKLAHOMA AND WESTERN NORTH TEXAS.

SCATTERED STRONG TO SEVERE STORMS WILL OCCUR THIS MORNING ALONG
AND EAST OF A COMBINED DRYLINE AND COLD FRONT. THIS FRONT WILL
MOVE QUICKLY EAST TODAY...FROM WESTERN OKLAHOMA AND WESTERN NORTH
TEXAS EARLY THIS MORNING...TO THE I-35 AREA ABOUT 8 AM...TO ATOKA
AND DURANT AROUND 1 PM. EXPECT HAIL TO THE SIZE OF GOLF BALLS AND
STRONG WINDS WITH THE STRONGEST STORMS. LARGER HAIL AND STRONGER
WINDS MAY OCCUR OVER SOUTHEAST OKLAHOMA EARLY THIS AFTERNOON.
THE RISK OF STORMS WILL END SHORTLY AFTER THE PASSAGE OF THE
FRONT.

.FIRE WEATHER...
STRONG WINDS BEHIND THE FRONT WILL BRING MUCH DRIER AIR INTO THE
REGION TODAY. THESE CONDITIONS WILL ENTER WESTERN OKLAHOMA BY MID-
MORNING...AND SPREAD EAST WITH THE DRYLINE. A RED FLAG WARNING IS
IN EFFECT FROM MID-MORNING THROUGH MID EVENING.

.WINDS...
STRONG WEST TO SOUTHWEST WINDS WILL SPREAD ACROSS THE REGION
TODAY. A WIND ADVISORY IS IN EFFECT FOR MUCH OF OKLAHOMA AND NORTH
TEXAS FROM MID-MORNING THROUGH EARLY THIS EVENING.

.SPOTTER AND EMERGENCY MANAGEMENT STATEMENT...

STORM SPOTTER GROUPS AND EMERGENCY MANAGEMENT PERSONNEL ACROSS
CENTRAL AND SOUTHEAST OKLAHOMA SHOULD PREPARE FOR SEVERE WEATHER
OPERATIONS THROUGH THIS MORNING.

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

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

GET GRAPHICS AND MORE DETAILS AT WEATHER.GOV/NORMAN...AND FOLLOW
OUR WEATHER FORECAST OFFICE ON TWITTER AND FACEBOOK.

In the hours before

Special weather statement, Apr 27, 12:07 AM CDT, 5 hours 6 minutes before

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Special weather statement, Apr 27, 12:23 AM CDT, 4 hours 50 minutes before

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    <section class="card" role="status" aria-live="polite">
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      <h1 id="headline">This service is currently unavailable.</h1>
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        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
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        Please try again in a few minutes.
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Special weather statement, Apr 27, 1:25 AM CDT, 3 hours 48 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
125 AM CDT SUN APR 27 2014

OKZ010-011-015-270700-
WOODWARD OK-DEWEY OK-MAJOR OK-
125 AM CDT SUN APR 27 2014

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN WOODWARD...
NORTHWESTERN DEWEY AND WEST CENTRAL MAJOR COUNTIES UNTIL 200 AM
CDT...

AT 123 AM CDT...A THUNDERSTORM WAS LOCATED NEAR CAMARGO...MOVING
NORTHEAST AT 45 MPH.

HAZARDS INCLUDE...
HAIL UP TO ONE-HALF INCH DIAMETER...
WIND GUSTS TO 50 MPH...

LOCATIONS IMPACTED INCLUDE...
MOORELAND...VICI...CAMARGO...MUTUAL...QUINLAN AND CESTOS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SEVERE WEATHER IS NOT EXPECTED AND NO WARNINGS ARE ANTICIPATED AT
THIS TIME.

&&

LAT...LON 3593 9927 3603 9938 3656 9920 3638 9875
TIME...MOT...LOC 0623Z 212DEG 41KT 3603 9928

Special weather statement, Apr 27, 2:07 AM CDT, 3 hours 6 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
207 AM CDT SUN APR 27 2014

OKZ008-013-270745-
KAY OK-NOBLE OK-
207 AM CDT SUN APR 27 2014

...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL KAY AND NOBLE COUNTIES
UNTIL 245 AM CDT...

AT 206 AM CDT...A STRONG THUNDERSTORM WAS LOCATED NEAR PERRY...MOVING
NORTHEAST AT 45 MPH.

HAZARDS INCLUDE...
HAIL UP TO THE SIZE OF NICKELS...
WIND GUSTS TO 50 MPH...

LOCATIONS IMPACTED INCLUDE...
PONCA CITY...PERRY...KAW CITY...RED ROCK...MARLAND...KILDARE...KAW
LAKE...SOONER LAKE...PECKHAM AND CERES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3681 9676 3679 9676 3675 9683 3675 9689
      3669 9693 3670 9704 3668 9707 3659 9705
      3658 9697 3660 9691 3656 9689 3650 9703
      3636 9703 3619 9724 3629 9743 3691 9721
TIME...MOT...LOC 0706Z 212DEG 41KT 3629 9731

Special weather statement, Apr 27, 2:35 AM CDT, 2 hours 38 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
235 AM CDT SUN APR 27 2014

OKZ008-270800-
KAY OK-
235 AM CDT SUN APR 27 2014

...SIGNIFICANT WEATHER ADVISORY FOR KAY COUNTY UNTIL 300 AM CDT...

AT 230 AM CDT...A STRONG THUNDERSTORM WAS LOCATED NEAR PONCA CITY...
MOVING NORTHEAST AT 40 MPH. A SECOND STRONG STORM WAS ABOUT 5 MILES
SOUTHWEST OF CHILOCCO...ALSO MOVING QUICKLY NORTHEAST.

HAZARDS INCLUDE...
HAIL UP TO THE SIZE OF NICKELS...
WIND GUSTS TO 50 MPH...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3691 9675 3676 9682 3675 9685 3675 9689
      3672 9692 3669 9699 3670 9704 3665 9707
      3662 9715 3692 9733 3697 9729 3700 9726
      3700 9675
TIME...MOT...LOC 0730Z 223DEG 33KT 3671 9710

CMS

Special weather statement, Apr 27, 4:58 AM CDT, 15 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
458 AM CDT SUN APR 27 2014

OKZ023-271015-
CADDO OK-
458 AM CDT SUN APR 27 2014

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN CADDO COUNTY UNTIL
515 AM CDT...

AT 454 AM CDT...A STRONG THUNDERSTORM WAS LOCATED 6 MILES SOUTHWEST
OF ANADARKO...MOVING NORTHEAST AT 65 MPH.

HAZARDS INCLUDE...
HAIL UP TO THE SIZE OF NICKELS...

LOCATIONS IMPACTED INCLUDE...
ANADARKO...APACHE...BOONE AND STECKER.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3520 9830 3509 9810 3485 9831 3488 9848
TIME...MOT...LOC 0954Z 216DEG 57KT 3498 9829

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 26, 8:35 PM CDT	Special Weather Statement	OUN	Harmon	25 min
Apr 26, 8:51 PM CDT	Severe Thunderstorm Warning	OUN	Harmon, Jackson	39 min
Apr 26, 9:10 PM CDT	Special Weather Statement	OUN	Greer	20 min
Apr 26, 9:29 PM CDT	Severe Thunderstorm Warning	OUN	Greer, Jackson, Kiowa	46 min
Apr 27, 12:07 AM CDT	Special Weather Statement	OUN	Garfield, Kay, Noble	23 min
Apr 27, 12:23 AM CDT	Special Weather Statement	OUN	Roger Mills	37 min
Apr 27, 1:25 AM CDT	Special Weather Statement	OUN	Woodward	35 min
Apr 27, 2:07 AM CDT	Special Weather Statement	OUN	Kay, Noble	38 min
Apr 27, 2:35 AM CDT	Special Weather Statement	OUN	Kay	25 min
Apr 27, 4:58 AM CDT	Special Weather Statement	OUN	Caddo	17 min
Apr 27, 5:18 AM CDT	Special Weather Statement	OUN	Comanche	27 min
Apr 27, 5:19 AM CDT	Special Weather Statement	OUN	Grady	26 min
Apr 27, 5:38 AM CDT	Severe Thunderstorm Warning	OUN	Comanche, Grady	52 min
Apr 27, 5:40 AM CDT	Special Weather Statement	OUN	Grady	20 min
Apr 27, 5:47 AM CDT	Special Weather Statement	OUN	Logan	13 min
Apr 27, 5:54 AM CDT	Severe Thunderstorm Warning	OUN	Canadian, Grady, Kingfisher, Logan, Oklahoma	51 min
Apr 27, 6:20 AM CDT	Severe Thunderstorm Warning	OUN	Canadian, Kingfisher, Logan, Oklahoma	40 min
Apr 27, 6:33 AM CDT	Special Weather Statement	OUN	Oklahoma	27 min
Apr 27, 6:36 AM CDT	Severe Thunderstorm Warning	OUN	Garfield, Logan, Noble, Payne	24 min
Apr 27, 6:38 AM CDT	Severe Thunderstorm Warning	OUN	Garfield, Kingfisher, Logan	37 min
Apr 27, 6:52 AM CDT	Special Weather Statement	OUN	Oklahoma	23 min
Apr 27, 7:00 AM CDT	Special Weather Statement	OUN	Oklahoma	30 min
Apr 27, 7:08 AM CDT	Severe Thunderstorm Warning	OUN	Canadian, Logan, Oklahoma	22 min
Apr 27, 7:10 AM CDT	Special Weather Statement	OUN	Carter, Love, Murray	50 min
Apr 27, 7:24 AM CDT	Severe Thunderstorm Warning	OUN	Logan, Noble, Payne	51 min
Apr 27, 7:29 AM CDT	Severe Thunderstorm Warning	OUN	Lincoln, Logan, Oklahoma, Payne	46 min
Apr 27, 7:33 AM CDT	Special Weather Statement	OUN	Oklahoma	12 min
Apr 27, 7:39 AM CDT	Special Weather Statement	OUN	Kay	21 min
Apr 27, 7:40 AM CDT	Special Weather Statement	OUN	Jefferson, Stephens	50 min
Apr 27, 7:45 AM CDT	Severe Thunderstorm Warning	OUN	Cotton, Jefferson, Stephens	45 min
Apr 27, 7:51 AM CDT	Special Weather Statement	OUN	Oklahoma	9 min
Apr 27, 7:58 AM CDT	Severe Thunderstorm Warning	OUN	Atoka, Coal, Johnston, Marshall, Pontotoc	47 min
Apr 27, 8:01 AM CDT	Severe Thunderstorm Warning	OUN	Logan, Oklahoma	29 min
Apr 27, 8:12 AM CDT	Special Weather Statement	OUN	Hughes	48 min
Apr 27, 8:15 AM CDT	Special Weather Statement	OUN	Oklahoma	15 min
Apr 27, 8:17 AM CDT	Special Weather Statement	OUN	Lincoln	28 min
Apr 27, 8:19 AM CDT	Special Weather Statement	OUN	Bryan	26 min
Apr 27, 8:32 AM CDT	Special Weather Statement	OUN	Carter	28 min
Apr 27, 8:36 AM CDT	Severe Thunderstorm Warning	OUN	Lincoln, Payne	39 min
Apr 27, 8:47 AM CDT	Severe Thunderstorm Warning	OUN	Bryan, Marshall	43 min
Apr 27, 9:04 AM CDT	Special Weather Statement	OUN	Carter, Murray, Pontotoc	56 min
Apr 27, 9:14 AM CDT	Severe Thunderstorm Warning	OUN	Lincoln	46 min
Apr 27, 9:28 AM CDT	Special Weather Statement	OUN	Atoka	32 min
Apr 27, 9:36 AM CDT	Severe Thunderstorm Warning	OUN	Atoka	39 min
Apr 27, 9:57 AM CDT	Special Weather Statement	OUN	Bryan	18 min
Apr 27, 10:00 AM CDT	Special Weather Statement	OUN	Okfuskee	15 min
Apr 27, 2:29 PM CDT	Blowing Dust Advisory	OUN	Alfalfa, Beckham, Blaine, Caddo, Canadian, Comanche and 17 more	6 hr
Apr 27, 2:37 PM CDT	Special Weather Statement	OUN	Bryan	23 min
Apr 27, 2:53 PM CDT	Special Weather Statement	OUN	Bryan	7 min
Apr 27, 3:01 PM CDT	Special Weather Statement	OUN	Bryan	14 min
Apr 27, 3:15 PM CDT	Severe Thunderstorm Warning	OUN	Bryan	30 min
Apr 26, 7:07 PM CDT	Special Weather Statement	OUN	Knox	23 min
Apr 26, 8:19 PM CDT	Special Weather Statement	OUN	Hardeman	26 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 2014 Every severe thunderstorm warning in 2014

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.