Alert archive / Texas / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 107, NWS Norman, OK

April 11, 2016Archer County, Clay County, Texas

NWS Norman, OK issued this severe thunderstorm warning at Apr 11, 2016, 3:08 PM CDT for Archer County, Clay County, Texas. It was in force for 52 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 11, 2016, 3:08 PM CDT (20:08 UTC)
Expired: Apr 11, 2016, 4:00 PM CDT
In force: 52 min
Issued by: NWS Norman, OK
Area: Storm-based polygon
Tornado: Possible
Hail: 2.0 in
Wind: 70.0 mph

Counties Archer County, TX, Clay County, TX

The radar

The Altus AFB radar (KFDR), 88 km from the middle of the area, began a volume at 20:12 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
Apr 11, 1:38 PM CDT	Severe Thunderstorm Watch	SPC	9 hr

The nearest sounding before it

Fort Worth, TX (KFWD), launched 12:00Z, 8.1 hours before the alert went out and 145 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: 1237 J/kg
Mixed-layer CIN: -122 J/kg
Mixed-layer LCL: 804 m above ground
0-6 km bulk shear: 58 kt
0-1 km storm-relative helicity: 331 m²/s²
0-3 km storm-relative helicity: 347 m²/s²
Significant tornado parameter: 1.4
Supercell composite: 3.7

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 11, 2:39 PM CDT, 29 minutes earlier.

Area forecast discussion, Apr 11, 2:39 PM CDT, 29 minutes before

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Hazardous weather outlook, Apr 11, 11:51 AM CDT, 3 hours 17 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE NORMAN OK
1151 AM CDT MON APR 11 2016

OKZ004>048-050>052-TXZ083>090-121700-
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-
1151 AM CDT MON APR 11 2016

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

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

.THUNDERSTORMS...
THERE IS A RISK OF SEVERE STORMS THIS AFTERNOON INTO THIS EVENING
ACROSS PORTIONS OF SOUTHERN OKLAHOMA AND WESTERN NORTH TEXAS.

LOCATION...
A SLIGHT RISK OF SEVERE STORMS IS LOCATED SOUTH AND EAST OF A
LINE FROM ADA AND NORTHWEST OF ARDMORE... TO WAURIKA OKLAHOMA AND
HENRIETTA TEXAS. THIS INCLUDES ARDMORE... ATOKA... AND DURANT. A
MARGINAL RISK COVERS AN AREA GENERALLY SOUTH AND EAST OF A LINE
FROM HOLDENVILLE AND CHICKASHA... TO HOBART OKLAHOMA... TO NEAR
VERNON AND SEYMOUR TEXAS.

TIMING...
SEVERE STORMS WILL BE POSSIBLE THROUGH 8 PM.

IMPACTS...
LARGE HAIL UP TO THE SIZE OF GOLF BALLS AND DAMAGING WIND GUSTS
UP TO 70 MPH WILL BE POSSIBLE WITH THE STRONGEST STORMS. THERE IS
ALSO A LOW RISK OF TORNADOES... MAINLY FOR AREAS ALONG AND SOUTH
OF THE RED RIVER.

DISCUSSION...
SHOWERS AND THUNDERSTORMS WILL CONTINUE TO DEVELOP AND MOVE
ACROSS PARTS OF THE AREA THROUGHOUT THE DAY... GENERALLY IN AREAS
SOUTH OF INTERSTATE 40. THERE ARE STILL SOME QUESTIONS ON WHETHER
THE INGREDIENTS WILL BE ABLE TO COME TOGETHER TODAY FOR SOME
STRONG TO SEVERE STORMS TO DEVELOP. HOWEVER... IF SEVERE STORMS DO
DEVELOP... LARGE HAIL AND STRONG WIND GUSTS WILL BE THE PRIMARY
CONCERNS. THERE IS ALSO A LOW RISK FOR A TORNADO OR TWO.

THE POTENTIAL FOR SEVERE STORMS IS EXPECTED TO END EARLY THIS
EVENING.

.SPOTTER AND EMERGENCY MANAGEMENT INFORMATION STATEMENT...
STORM SPOTTER GROUPS AND EMERGENCY MANAGEMENT PERSONNEL ACROSS THE
RISK AREAS SHOULD PLAN FOR SEVERE WEATHER OPERATIONS THIS
AFTERNOON AND EVENING.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY...

.THUNDERSTORMS...
THUNDERSTORMS WILL BE POSSIBLE AGAIN TUESDAY NIGHT INTO
WEDNESDAY... SEVERE STORMS ARE NOT ANTICIPATED AT THIS TIME.
THUNDERSTORM CHANCES WILL THEN RETURN TO THE AREA FRIDAY AND
CONTINUE INTO THE WEEKEND. SOME STRONG TO SEVERE STORMS COULD BE
POSSIBLE.

.FIRE WEATHER...
NEAR CRITICAL FIRE WEATHER CONDITIONS WILL DEVELOP ON FRIDAY DUE
TO GUSTY SOUTH WINDS.

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

KURTZ/MAXWELL/BARNES

In the hours before

Local storm report, Apr 11, 1:18 PM CDT, 1 hour 50 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
118 PM CDT MON APR 11 2016

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

0115 PM     HAIL             MANNSVILLE              34.19N 96.88W
04/11/2016  E1.75 INCH       JOHNSTON           OK   PUBLIC

&&

JPIKE

Local storm report, Apr 11, 1:20 PM CDT, 1 hour 48 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
120 PM CDT MON APR 11 2016

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

0115 PM     HAIL             2 SW MANNSVILLE         34.17N 96.90W
04/11/2016  E1.25 INCH       MARSHALL           OK   PUBLIC

            COVERING THE GROUND

&&

JPIKE

Local storm report, Apr 11, 1:30 PM CDT, 1 hour 38 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
130 PM CDT MON APR 11 2016

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

0129 PM     HAIL             TISHOMINGO              34.23N 96.68W
04/11/2016  E1.75 INCH       JOHNSTON           OK   EMERGENCY MNGR

&&

JPIKE

Special weather statement, Apr 11, 1:58 PM CDT, 1 hour 10 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
158 PM CDT MON APR 11 2016

OKZ023-111945-
CADDO OK-
158 PM CDT MON APR 11 2016

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHERN CADDO COUNTY UNTIL 245
PM CDT...

AT 156 PM CDT...A STRONG THUNDERSTORM WAS LOCATED 7 MILES SOUTHWEST
OF FORT COBB...MOVING NORTHEAST AT 25 MPH.

HAZARDS INCLUDE...
HAIL UP TO ONE-HALF INCH DIAMETER...
WIND GUSTS TO 40 MPH...
FREQUENT CLOUD TO GROUND LIGHTNING...

LOCATIONS IMPACTED INCLUDE...
ANADARKO...FORT COBB AND GRACEMONT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3491 9855 3505 9862 3523 9825 3501 9811
TIME...MOT...LOC 1856Z 245DEG 23KT 3500 9849

Local storm report, Apr 11, 2:24 PM CDT, 44 minutes before

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Local storm report, Apr 11, 2:28 PM CDT, 40 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 10, 7:12 PM CDT	Severe Thunderstorm Warning	OUN	Comanche, Cotton, Tillman	48 min
Apr 10, 7:17 PM CDT	Severe Thunderstorm Warning	OUN	Alfalfa, Major	43 min
Apr 10, 7:20 PM CDT	Special Weather Statement	OUN	Kiowa	55 min
Apr 10, 7:28 PM CDT	Severe Thunderstorm Warning	OUN	Alfalfa, Woods	47 min
Apr 10, 7:32 PM CDT	Special Weather Statement	OUN	Canadian	28 min
Apr 10, 7:41 PM CDT	Special Weather Statement	OUN	Garfield	34 min
Apr 10, 7:50 PM CDT	Special Weather Statement	OUN	Caddo, Canadian	25 min
Apr 10, 7:51 PM CDT	Severe Thunderstorm Warning	OUN	Alfalfa, Garfield, Grant	39 min
Apr 10, 7:54 PM CDT	Severe Thunderstorm Warning	OUN	Comanche, Cotton	51 min
Apr 10, 7:55 PM CDT	Severe Thunderstorm Warning	OUN	Garfield, Major	50 min
Apr 10, 7:57 PM CDT	Special Weather Statement	OUN	Greer	48 min
Apr 10, 7:59 PM CDT	Special Weather Statement	OUN	Jackson, Kiowa	46 min
Apr 10, 8:03 PM CDT	Special Weather Statement	OUN	Washita	42 min
Apr 10, 8:06 PM CDT	Severe Thunderstorm Warning	OUN	Jackson	18 min
Apr 10, 8:16 PM CDT	Severe Thunderstorm Warning	OUN	Beckham, Greer, Kiowa, Washita	44 min
Apr 10, 8:19 PM CDT	Special Weather Statement	OUN	Canadian	26 min
Apr 10, 8:26 PM CDT	Special Weather Statement	OUN	Kingfisher, Logan, Payne	34 min
Apr 10, 8:31 PM CDT	Special Weather Statement	OUN	Caddo	59 min
Apr 10, 8:31 PM CDT	Severe Thunderstorm Warning	OUN	Grant, Kay	44 min
Apr 10, 8:33 PM CDT	Special Weather Statement	OUN	Beckham	42 min
Apr 10, 8:35 PM CDT	Severe Thunderstorm Warning	OUN	Cotton, Tillman	40 min
Apr 10, 8:45 PM CDT	Severe Thunderstorm Warning	OUN	Garfield, Grant, Kay, Noble	45 min
Apr 10, 8:49 PM CDT	Special Weather Statement	OUN	Canadian	26 min
Apr 10, 8:51 PM CDT	Severe Thunderstorm Warning	OUN	Beckham, Greer, Harmon	39 min
Apr 10, 9:07 PM CDT	Special Weather Statement	OUN	Caddo, Comanche	23 min
Apr 10, 9:09 PM CDT	Severe Thunderstorm Warning	OUN	Caddo, Kiowa, Washita	51 min
Apr 10, 9:16 PM CDT	Severe Thunderstorm Warning	OUN	Cotton, Tillman	44 min
Apr 10, 9:23 PM CDT	Special Weather Statement	OUN	Oklahoma	37 min
Apr 10, 9:24 PM CDT	Tornado Warning	OUN	Cotton	24 min
Apr 10, 9:35 PM CDT	Severe Thunderstorm Warning	OUN	Greer, Harmon, Jackson, Kiowa, Tillman	40 min
Apr 10, 9:52 PM CDT	Severe Thunderstorm Warning	OUN	Jackson	23 min
Apr 10, 10:00 PM CDT	Severe Thunderstorm Warning	OUN	Cotton, Jefferson	45 min
Apr 10, 10:01 PM CDT	Severe Thunderstorm Warning	OUN	Caddo, Grady	44 min
Apr 10, 10:15 PM CDT	Severe Thunderstorm Warning	OUN	Comanche, Jackson, Kiowa, Tillman, Washita	45 min
Apr 10, 10:21 PM CDT	Severe Thunderstorm Warning	OUN	Tillman	24 min
Apr 10, 10:30 PM CDT	Severe Thunderstorm Warning	OUN	Jefferson	45 min
Apr 10, 10:32 PM CDT	Special Weather Statement	OUN	Logan	28 min
Apr 10, 10:36 PM CDT	Severe Thunderstorm Warning	OUN	Grady	39 min
Apr 10, 10:39 PM CDT	Severe Thunderstorm Warning	OUN	Jefferson, Stephens	36 min
Apr 10, 10:40 PM CDT	Severe Thunderstorm Warning	OUN	Comanche, Cotton, Tillman	35 min
Apr 10, 10:52 PM CDT	Severe Thunderstorm Warning	OUN	Caddo, Comanche, Cotton, Grady, Kiowa, Stephens and 1 more	38 min
Apr 10, 11:01 PM CDT	Severe Thunderstorm Warning	OUN	Carter, Garvin, Murray, Stephens	27 min
Apr 10, 11:10 PM CDT	Severe Thunderstorm Warning	OUN	Comanche, Cotton, Stephens	35 min
Apr 10, 11:21 PM CDT	Severe Thunderstorm Warning	OUN	Cotton, Jefferson, Stephens	39 min
Apr 10, 11:21 PM CDT	Severe Thunderstorm Warning	OUN	Caddo, Comanche, Garvin, Grady, McClain, Stephens	39 min
Apr 10, 11:24 PM CDT	Severe Thunderstorm Warning	OUN	Cotton, Stephens	36 min
Apr 10, 11:31 PM CDT	Special Weather Statement	OUN	Cleveland, Oklahoma	29 min
Apr 10, 11:33 PM CDT	Special Weather Statement	OUN	Carter	27 min
Apr 10, 11:50 PM CDT	Severe Thunderstorm Warning	OUN	Cleveland, Oklahoma	40 min
Apr 10, 11:59 PM CDT	Severe Thunderstorm Warning	OUN	Carter, Cleveland, Garvin, Jefferson, Love, McClain and 5 more	46 min
Apr 11, 12:09 AM CDT	Severe Thunderstorm Warning	OUN	Cleveland, Grady, McClain	25 min
Apr 11, 12:46 AM CDT	Severe Thunderstorm Warning	OUN	Atoka, Carter, Coal, Garvin, Hughes, Johnston and 6 more	44 min
Apr 11, 1:30 AM CDT	Severe Thunderstorm Warning	OUN	Atoka, Coal, Hughes, Johnston, Pontotoc	45 min
Apr 11, 3:46 AM CDT	Special Weather Statement	OUN	Murray	29 min
Apr 11, 5:48 AM CDT	Special Weather Statement	OUN	Carter	27 min
Apr 11, 5:57 AM CDT	Severe Thunderstorm Warning	OUN	Carter, Jefferson, Murray	48 min
Apr 11, 6:28 AM CDT	Special Weather Statement	OUN	Jefferson	32 min
Apr 11, 7:08 AM CDT	Special Weather Statement	OUN	Murray	37 min
Apr 11, 7:27 AM CDT	Special Weather Statement	OUN	Atoka, Bryan, Johnston, Marshall	48 min
Apr 11, 7:30 AM CDT	Special Weather Statement	OUN	Jefferson	30 min
Apr 11, 12:07 PM CDT	Special Weather Statement	OUN	Carter, Love	38 min
Apr 11, 12:17 PM CDT	Areal Flood Advisory	OUN	Carter, Jefferson, Love	118 min
Apr 11, 12:37 PM CDT	Special Weather Statement	OUN	Carter, Johnston, Murray	38 min
Apr 11, 12:50 PM CDT	Severe Thunderstorm Warning	OUN	Carter, Johnston, Marshall	40 min
Apr 11, 1:22 PM CDT	Severe Thunderstorm Warning	OUN	Carter, Johnston, Love, Marshall	38 min
Apr 11, 1:28 PM CDT	Severe Thunderstorm Warning	OUN	Atoka, Bryan, Coal, Johnston, Marshall	32 min
Apr 11, 1:45 PM CDT	Areal Flood Advisory	OUN	Atoka, Bryan, Carter, Johnston, Love, Marshall	2 hr
Apr 11, 1:58 PM CDT	Special Weather Statement	OUN	Caddo	47 min
Apr 11, 1:58 PM CDT	Severe Thunderstorm Warning	OUN	Atoka, Bryan, Coal	47 min
Apr 11, 2:06 PM CDT	Severe Thunderstorm Warning	OUN	Atoka, Bryan, Johnston, Marshall	39 min
Apr 11, 2:40 PM CDT	Severe Thunderstorm Warning	OUN	Bryan	50 min
Apr 11, 3:16 PM CDT	Special Weather Statement	OUN	Comanche	29 min
Apr 11, 3:50 PM CDT	Special Weather Statement	OUN	Canadian	25 min
Apr 11, 4:55 PM CDT	Special Weather Statement	OUN	McClain	35 min
Apr 11, 5:11 PM CDT	Special Weather Statement	OUN	Cleveland	34 min
Apr 11, 5:16 PM CDT	Severe Thunderstorm Warning	OUN	Cleveland	29 min
Apr 11, 5:48 PM CDT	Special Weather Statement	OUN	Pottawatomie	27 min
Apr 11, 6:23 PM CDT	Special Weather Statement	OUN	Seminole	37 min
Apr 10, 7:44 PM CDT	Severe Thunderstorm Warning	OUN	Foard, Knox	46 min
Apr 10, 8:12 PM CDT	Special Weather Statement	OUN	Wichita, Wilbarger	48 min

Nearby

Severe Thunderstorm Warnings in Texas, 2016 Every severe thunderstorm warning in 2016

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.