Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 661, NWS Norman, OK

December 26, 20154 counties in Oklahoma

NWS Norman, OK issued this severe thunderstorm warning at Dec 26, 2015, 5:20 PM CST for 4 counties in Oklahoma. It was in force for 25 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: Dec 26, 2015, 5:20 PM CST (23:20 UTC)
Expired: Dec 26, 2015, 5:45 PM CST
In force: 25 min
Issued by: NWS Norman, OK
Area: Storm-based polygon
Hail: 1.25 in
Wind: 60.0 mph

Counties Carter County, OK, Johnston County, OK, Love County, OK, Murray County, OK

The radar

The Norman radar (KTLX), 122 km from the middle of the area, began a volume at 23:23 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
Dec 26, 12:35 PM CST	Tornado Watch	SPC	9 hr

The nearest sounding before it

Norman, OK (KOUN), launched 12:00Z, 11.3 hours before the alert went out and 112 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: 608 J/kg
Mixed-layer CIN: -27 J/kg
Mixed-layer LCL: 537 m above ground
0-6 km bulk shear: 66 kt
0-1 km storm-relative helicity: 276 m²/s²
0-3 km storm-relative helicity: 313 m²/s²
Significant tornado parameter: 1.0
Supercell composite: 5.4

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 Dec 26, 4:59 PM CST, 21 minutes earlier.

Area forecast discussion, Dec 26, 4:59 PM CST, 21 minutes before

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Hazardous weather outlook, Dec 26, 12:14 PM CST, 5 hours 6 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE NORMAN OK
1214 PM CST SAT DEC 26 2015

OKZ004>048-050>052-TXZ083>090-271815-
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-
1214 PM CST SAT DEC 26 2015

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

.DAY ONE...THROUGH TONIGHT...

.THUNDERSTORMS...
STRONG TO SEVERE STORMS WILL BE POSSIBLE MAINLY SOUTHEAST OF I-44
THIS AFTERNOON AND EVENING. HAIL AND STRONG WINDS WILL BE THE
PRIMARY THREATS...BUT THERE IS ALSO A LOW CHANCE OF TORNADOES.

.HEAVY RAIN AND FLOODING...
A FLASH FLOOD WATCH IS IN EFFECT FOR OKLAHOMA...GENERALLY EAST OF
A LINE FROM CHANDLER TO NORMAN TO WAURIKA.

.COLD...
TEMPERATURES WILL TURN ABRUPTLY COLDER TODAY. STRONG NORTH WINDS
WILL PUSH WIND CHILLS INTO THE TEENS AND SINGLE DIGITS BY SUNDAY
MORNING IN MUCH OF CENTRAL AND WESTERN OKLAHOMA.

.SPOTTER AND EMERGENCY MANAGEMENT STATEMENT...
STORM SPOTTER GROUPS AND EMERGENCY MANAGEMENT PERSONNEL ACROSS
PARTS OF CENTRAL AND SOUTHERN OKLAHOMA...AND WESTERN NORTH
TEXAS...SHOULD PREPARE FOR SEVERE WEATHER OPERATIONS THIS
AFTERNOON AND EVENING.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY...

.WINTER PRECIPITATION...
A POTENTIALLY DANGEROUS WINTER STORM WILL BEGIN TONIGHT...AND
CONTINUE THROUGH MONDAY. ACCUMULATING SNOW AND ICE ARE LIKELY
ACROSS THE AREA...ESPECIALLY IN WESTERN OKLAHOMA.

WHILE THERE IS STILL SOME UNCERTAINTY REGARDING THE TIMING AND
LOCATIONS OF THE VARIOUS PRECIPITATION TYPES...IT APPEARS LIKELY
THAT HEAVY SNOW AND BLOWING SNOW WILL AFFECT PARTS OF WESTERN
OKLAHOMA. ICE IS LIKELY TO ACCUMULATE FROM NORTH CENTRAL OKLAHOMA
TO SOUTHWEST OKLAHOMA AND SURROUNDING PARTS OF NORTH TEXAS. BY
MONDAY MORNING...MOST OF THE PRECIPITATION SHOULD HAVE
CHANGED TO SNOW. IN SOUTHEAST OKLAHOMA...A COLD RAIN IS EXPECTED.

STRONG WINDS MAY CAUSE NEAR-BLIZZARD CONDITIONS IN WESTERN
OKLAHOMA ON SUNDAY...AND POSSIBLY MONDAY. THE WINDS MAY ALSO
INCREASE TREE AND POWER LINE DAMAGE CAUSED BY ICE.

IF YOU PLAN ON TRAVELING THIS WEEKEND OR EARLY NEXT WEEK OVER ANY
PART OF THE CENTRAL OR SOUTHERN PLAINS...CONTINUE TO CHECK THE
FORECAST FOR THE LATEST UPDATES. CONFIDENCE ON WHAT TYPE OF
WEATHER WILL IMPACT THE AREA USUALLY INCREASES WITH EACH UPDATE.

.HEAVY RAIN AND FLOODING...
SEVERAL INCHES OF RAINFALL MAY OCCUR THIS WEEKEND...AND FLOODING
MAY RESULT...ESPECIALLY ACROSS SOUTHEAST OKLAHOMA. A FLASH FLOOD
WATCH IS IN EFFECT FOR THIS AREA UNTIL MONDAY MORNING.

.THUNDERSTORMS...
THUNDERSTORMS WILL BE POSSIBLE AGAIN SUNDAY ACROSS PORTIONS OF
SOUTHEAST OKLAHOMA AND WESTERN NORTH TEXAS. SOME STRONG TO SEVERE
STORMS WITH HAIL AND DAMAGING WINDS AS THE MAIN HAZARDS WILL BE
POSSIBLE.

.COLD...
MUCH COLDER WEATHER WILL CONTINUE THROUGH NEXT WEEK. THIS WILL
CAUSE ADDITIONAL DIFFICULTIES FOR THOSE WHO LOSE POWER BECAUSE OF
ICE OR STRONG WINDS.

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

In the hours before

Local storm report, Dec 26, 12:46 PM CST, 4 hours 34 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
1246 PM CST SAT DEC 26 2015

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

1237 PM     FLASH FLOOD      NORMAN                  35.22N 97.44W
12/26/2015                   CLEVELAND          OK   BROADCAST MEDIA

            6 TO 12 INCHES OF WATER REPORTED AT HIGHWAY 35NB AND
            HIGHWAY 9 EXIT.

&&

MDAY

Local storm report, Dec 26, 1:11 PM CST, 4 hours 9 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
111 PM CST SAT DEC 26 2015

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

0107 PM     HAIL             CROWELL                 33.98N 99.72W
12/26/2015  E1.00 INCH       FOARD              TX   PUBLIC

&&

MDAY

Local storm report, Dec 26, 2:08 PM CST, 3 hours 12 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
208 PM CST SAT DEC 26 2015

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

0157 PM     TORNADO          7 NE BYARS              34.94N 96.96W
12/26/2015                   MCCLAIN            OK   PUBLIC

&&

MDAY

Special weather statement, Dec 26, 2:48 PM CST, 2 hours 32 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
248 PM CST SAT DEC 26 2015

OKZ043-048-262115-
ATOKA OK-COAL OK-
248 PM CST SAT DEC 26 2015

...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL ATOKA AND EASTERN COAL
COUNTIES UNTIL 315 PM CST...

AT 247 PM CST...A STRONG THUNDERSTORM WAS LOCATED NEAR ATOKA...MOVING
NORTH AT 50 MPH.

HAZARDS INCLUDE...
HAIL UP TO ONE-HALF INCH DIAMETER...
WIND GUSTS TO 40 MPH...
MINOR FLOODING IN AREAS OF POOR DRAINAGE...
FREQUENT CLOUD TO GROUND LIGHTNING...

LOCATIONS IMPACTED INCLUDE...
ATOKA...COALGATE...STRINGTOWN...LEHIGH...TUSHKA...WARDVILLE...PHILLIPS...
BOGGY DEPOT PARK...CHOCKIE...ATOKA RESERVOIR AND WESTERN MCGEE CREEK
LAKE.

LAT...LON 3430 9597 3430 9635 3477 9631 3477 9609
      3468 9609 3468 9589 3460 9588 3459 9582
TIME...MOT...LOC 2047Z 193DEG 44KT 3443 9615

KURTZ

Special weather statement, Dec 26, 3:27 PM CST, 1 hour 53 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
327 PM CST SAT DEC 26 2015

OKZ047-051-052-262200-
BRYAN OK-MARSHALL OK-JOHNSTON OK-
327 PM CST SAT DEC 26 2015

...SIGNIFICANT WEATHER ADVISORY FOR WESTERN BRYAN...MARSHALL AND
SOUTHEASTERN JOHNSTON COUNTIES UNTIL 400 PM CST...

AT 325 PM CST...A STRONG THUNDERSTORM WAS LOCATED NEAR KINGSTON...
MOVING NORTHEAST AT 45 MPH.

HAZARDS INCLUDE...
HAIL UP TO THE SIZE OF NICKELS...
MINOR FLOODING IN AREAS OF POOR DRAINAGE...
FREQUENT CLOUD TO GROUND LIGHTNING...

LOCATIONS IMPACTED INCLUDE...
MADILL...TISHOMINGO...KINGSTON...RAVIA...MILBURN...REAGAN...NIDA...RUSSETT...
COLEMAN...FILLMORE...LITTLE CITY...WOODVILLE...NORTHEASTERN LAKE TEXOMA
AND OAKLAND.

LAT...LON 3390 9669 3397 9688 3437 9675 3439 9653
      3427 9641 3424 9641
TIME...MOT...LOC 2125Z 207DEG 40KT 3400 9676

KURTZ

Special weather statement, Dec 26, 4:49 PM CST, 31 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
449 PM CST SAT DEC 26 2015

OKZ046-050-262315-
CARTER OK-LOVE OK-
449 PM CST SAT DEC 26 2015

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN CARTER AND NORTH
CENTRAL LOVE COUNTIES UNTIL 515 PM CST...

AT 449 PM CST...A STRONG THUNDERSTORM WAS LOCATED NEAR BURNEYVILLE...
MOVING NORTH AT 45 MPH.

HAZARDS INCLUDE...
HAIL UP TO THE SIZE OF NICKELS...
WIND GUSTS TO 50 MPH...
MINOR FLOODING IN AREAS OF POOR DRAINAGE...
FREQUENT CLOUD TO GROUND LIGHTNING...

LOCATIONS IMPACTED INCLUDE...
ARDMORE...LONE GROVE...OVERBROOK...BURNEYVILLE AND LAKE MURRAY.

THIS INCLUDES INTERSTATE 35 BETWEEN MILE MARKERS 16 AND 32.

LAT...LON 3384 9740 3416 9734 3419 9716 3411 9700
      3389 9718 3392 9721 3390 9725 3386 9726
      3387 9728 3389 9731 3387 9731 3385 9733
      3388 9732 3388 9733 3384 9735
TIME...MOT...LOC 2249Z 201DEG 41KT 3388 9731

KURTZ

The office that day

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

Issued	Product	Office	Counties	Lasted
Dec 26, 7:24 AM CST	River Flood Warning	OUN	Carter, Johnston, Murray	3 days
Dec 26, 7:24 AM CST	River Flood Warning	OUN	Love	4 days
Dec 26, 7:39 AM CST	River Flood Warning	OUN	Pottawatomie, Seminole	62 hr
Dec 26, 8:50 AM CST	Special Weather Statement	OUN	Cleveland	25 min
Dec 26, 9:14 AM CST	River Flood Warning	OUN	Bryan	4 days
Dec 26, 9:14 AM CST	River Flood Warning	OUN	Atoka, Bryan	6 days
Dec 26, 9:14 AM CST	River Flood Warning	OUN	Atoka	6 days
Dec 26, 9:15 AM CST	Special Weather Statement	OUN	Oklahoma	30 min
Dec 26, 9:19 AM CST	Special Weather Statement	OUN	Grady, Oklahoma	26 min
Dec 26, 9:32 AM CST	Special Weather Statement	OUN	Stephens	28 min
Dec 26, 9:41 AM CST	Special Weather Statement	OUN	Pontotoc	34 min
Dec 26, 9:47 AM CST	Special Weather Statement	OUN	Cleveland	28 min
Dec 26, 9:49 AM CST	Special Weather Statement	OUN	Oklahoma	26 min
Dec 26, 10:59 AM CST	Special Weather Statement	OUN	Caddo	31 min
Dec 26, 11:03 AM CST	Severe Thunderstorm Warning	OUN	Caddo, Canadian, Grady	42 min
Dec 26, 11:11 AM CST	Severe Thunderstorm Warning	OUN	Canadian, Cleveland, Grady, McClain, Oklahoma	49 min
Dec 26, 11:19 AM CST	Severe Thunderstorm Warning	OUN	Jackson	41 min
Dec 26, 11:56 AM CST	Severe Thunderstorm Warning	OUN	Greer, Harmon, Jackson	49 min
Dec 26, 12:05 PM CST	Special Weather Statement	OUN	Cleveland	25 min
Dec 26, 12:18 PM CST	Special Weather Statement	OUN	Hughes	27 min
Dec 26, 12:22 PM CST	Flash Flood Warning	OUN	Canadian, Cleveland, Grady, McClain, Oklahoma	3 hr
Dec 26, 12:24 PM CST	Special Weather Statement	OUN	Carter	36 min
Dec 26, 12:58 PM CST	Tornado Warning	OUN	Carter, Garvin, Murray	32 min
Dec 26, 1:27 PM CST	Tornado Warning	OUN	Garvin, McClain, Murray, Pontotoc, Pottawatomie	33 min
Dec 26, 1:55 PM CST	Tornado Warning	OUN	McClain, Pontotoc, Pottawatomie	20 min
Dec 26, 2:10 PM CST	Tornado Warning Tornado observed	OUN	Pottawatomie, Seminole	10 min
Dec 26, 2:48 PM CST	Special Weather Statement	OUN	Atoka, Coal	27 min
Dec 26, 2:57 PM CST	Tornado Warning	OUN	Atoka, Coal	21 min
Dec 26, 3:27 PM CST	Special Weather Statement	OUN	Johnston, Marshall	33 min
Dec 26, 4:26 PM CST	Tornado Warning	OUN	Atoka, Coal	34 min
Dec 26, 4:31 PM CST	Blizzard Warning	OUN	Beckham, Ellis, Harmon, Harper, Roger Mills, Woods and 1 more	35 hr
Dec 26, 4:31 PM CST	Ice Storm Warning	OUN	Alfalfa, Beckham, Blaine, Caddo, Canadian, Comanche and 13 more	23 hr
Dec 26, 4:31 PM CST	Winter Weather Advisory	OUN	Canadian, Carter, Cleveland, Cotton, Garfield, Garvin and 17 more	48 hr
Dec 26, 4:49 PM CST	Special Weather Statement	OUN	Love	26 min
Dec 26, 4:57 PM CST	Tornado Warning	OUN	Coal, Hughes	18 min
Dec 26, 5:01 PM CST	Tornado Warning	OUN	Carter, Love, Marshall	29 min
Dec 26, 5:08 PM CST	Areal Flood Advisory	OUN	Cleveland, McClain, Oklahoma	37 min
Dec 26, 10:48 AM CST	Special Weather Statement	OUN	Wichita	27 min
Dec 26, 10:49 AM CST	Special Weather Statement	OUN	Wilbarger	26 min
Dec 26, 11:47 AM CST	Severe Thunderstorm Warning	OUN	Baylor, Wilbarger	43 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 2015 Every severe thunderstorm warning in 2015

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.