Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 642, NWS Norman, OK

November 16, 20156 counties in Oklahoma; Hardeman County, Texas

NWS Norman, OK issued this severe thunderstorm warning at Nov 16, 2015, 9:55 PM CST for 6 counties in Oklahoma; Hardeman County, Texas. It was in force for 50 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: Nov 16, 2015, 9:55 PM CST (03:55 UTC)
Expired: Nov 16, 2015, 10:45 PM CST
In force: 50 min
Issued by: NWS Norman, OK
Area: Storm-based polygon
Hail: 0.88 in
Wind: 60.0 mph

Counties Beckham County, OK, Greer County, OK, Harmon County, OK, Jackson County, OK, Kiowa County, OK, Washita County, OK, Hardeman County, TX

The radar

The Altus AFB radar (KFDR), 71 km from the middle of the area, began a volume at 03:59 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
Nov 16, 8:17 PM CST	Tornado Watch	SPC	7 hr

The nearest sounding before it

Norman, OK (KOUN), launched 00:00Z, 3.9 hours before the alert went out and 192 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: 193 J/kg
Mixed-layer CIN: -77 J/kg
Mixed-layer LCL: 507 m above ground
0-6 km bulk shear: 46 kt
0-1 km storm-relative helicity: 388 m²/s²
0-3 km storm-relative helicity: 417 m²/s²
Significant tornado parameter: 0.4
Supercell composite: 5.1

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 Nov 16, 8:31 PM CST, 1 hour 24 minutes earlier.

Area forecast discussion, Nov 16, 8:31 PM CST, 1 hour 24 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORMAN OK
831 PM CST MON NOV 16 2015

.UPDATE...
QUICK UPDATE TO SLOW POPS AND INCLUDE TORNADO WATCH 540.

&&

.DISCUSSION...
SCATTERED THUNDERSTORMS CONTINUE TO SLOWLY PROGRESS EASTWARD AS
THE UPPER LOW AND COLD FRONT DO THE SAME. THE MOST SIGNIFICANT
STORM IS JUST ABOUT TO MOVE INTO NORTHERN ELLIS COUNTY, AND IS
CURRENTLY TORNADO WARNED BY AMA. EXPECT A FEW MORE DISCRETE CELLS
TO DEVELOP AHEAD OF THE FRONT OVER WESTERN OK FROM AROUND 4-6Z.
FUTURE MESOSCALE ENVIRONMENT WILL CONTINUE TO SUPPORT TORNADOES,
ESPECIALLY IF THE DEVELOPING SQUALL LINE LAGS. LOW LEVEL SHEAR
WILL BE MAXIMIZED AROUND 06Z AS STRONG NOCTURNAL LLJ DEVELOPS
ACROSS OK, PARTICULARLY ACROSS SW OK AND PORTIONS OF WESTERN NORTH
TEXAS. BASED ON HIRES SOLUTIONS, AND CURRENT EASTWARD PROGRESSION,
THE MOST LIKELY TIME FOR SEVERE WEATHER OVER WESTERN OK AND
WESTERN N TX WILL BE NOW THROUGH 08Z. AS STORMS MERGE INTO A LINE
THROUGH THE EARLY MORNING HOURS ACROSS CENTRAL OK, THE TORNADO
THREAT WILL DECREASE. HOWEVER, A SEVERE WIND THREAT (QLCS) MAY
CONTINUE THROUGH ABOUT 10-11Z FOR OUR FA.

&&

.PRELIMINARY POINT TEMPS/POPS...
OKLAHOMA CITY OK  66  54  64  40 /  40 100  20  10
HOBART OK         69  48  61  39 /  30  80  10  10
WICHITA FALLS TX  70  53  66  43 /  60  90  10  10
GAGE OK           72  44  56  35 /  40  90  10  20
PONCA CITY OK     65  58  65  39 /  50 100  30  20
DURANT OK         66  59  66  45 /  90 100  60  10

&&

.OUN WATCHES/WARNINGS/ADVISORIES...
OK...NONE.
TX...NONE.
&&

03/03

Hazardous weather outlook, Nov 16, 6:27 PM CST, 3 hours 28 minutes before

HAZARDOUS WEATHER OUTLOOK...UPDATED
NATIONAL WEATHER SERVICE NORMAN OK
627 PM CST MON NOV 16 2015

OKZ004>048-050>052-TXZ083>090-180030-
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-
627 PM CST MON NOV 16 2015

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

.DAY ONE...TONIGHT...

.THUNDERSTORMS...
THERE IS AN ENHANCED RISK OF SEVERE THUNDERSTORMS THIS EVENING AND
OVERNIGHT ACROSS THE WESTERN HALF OF OKLAHOMA AND ALL OF WESTERN
NORTH TEXAS.

LOCATION...
THE ENHANCED RISK IS LOCATED WEST OF A LINE FROM MEDFORD
TO NORMAN TO RINGLING... INCLUDING WESTERN NORTH TEXAS. A SLIGHT
RISK SURROUNDS THE ENHANCED RISK.

TIMING...
STORMS WILL CONTINUE TO DEVELOP OVER THE EASTERN OKLAHOMA AND TEXAS
PANHANDLES BETWEEN THROUGH 7 PM...MOVING INTO WESTERN OKLAHOMA AND
WESTERN NORTH TEXAS AROUND 8 PM. STORMS WILL DEVELOP INTO A LINE
THIS EVENING ACROSS WESTERN OKLAHOMA AND WESTERN NORTH TEXAS...AND
THEN MOVE EAST OVERNIGHT INTO THE INTERSTATE 35 CORRIDOR AROUND 1
TO 2 AM.

IMPACTS...
DAMAGING WINDS AND HAIL TO THE SIZE OF GOLF BALLS ARE THE PRIMARY
CONCERNS. TORNADOES WILL BE POSSIBLE...WITH THE BEST CHANCE DURING
THE EVENING HOURS ACROSS WESTERN OKLAHOMA AND WESTERN NORTH
TEXAS. THE RISK OF TORNADOES WILL DECREASE OVERNIGHT AS STORMS
MERGE INTO A SQUALL LINE.

DISCUSSION...
UNSEASONABLY WARM AND MOIST AIR WILL BUILD ACROSS THE WESTERN
HALF OF OKLAHOMA AND NORTHERN TEXAS TODAY AHEAD OF A STOUT UPPER
LEVEL WAVE APPROACHING THE SOUTHERN PLAINS. AS A COLD FRONT MOVES
EAST ACROSS THE PANHANDLES THIS AFTERNOON INTO THE EVENING...
SUFFICIENT INSTABILITY AND STRONG SHEAR WILL SUPPORT SUPERCELL
THUNDERSTORM DEVELOPMENT... INITIALLY... ACROSS WESTERN OKLAHOMA
AND WESTERN NORTH TEXAS LATE THIS AFTERNOON. DURING THE EVENING
HOURS... STORMS WILL MERGE INTO A SQUALL LINE... ADVANCING
EASTWARD OVERNIGHT... INTO EASTERN OKLAHOMA BY SUNRISE TUESDAY.

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

.THUNDERSTORMS...
SOME SHOWERS AND THUNDERSTORMS MAY LINGER ACROSS EAST CENTRAL
OKLAHOMA THROUGH EARLY TUESDAY MORNING BEHIND THE EXITING COLD
FRONT. NO SEVERE STORMS ARE EXPECTED AND CHANCES WILL END RATHER
QUICKLY AS DRIER... COOLER... MORE STABLE AIR SPREADS ACROSS THE
REGION.

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, Nov 16, 8:21 PM CST, 1 hour 34 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
821 PM CST MON NOV 16 2015

OKZ009-170245-
ELLIS OK-
821 PM CST MON NOV 16 2015

...SIGNIFICANT WEATHER ADVISORY FOR WEST CENTRAL ELLIS COUNTY UNTIL
845 PM CST...

AT 820 PM CST...A SEVERE THUNDERSTORM WAS LOCATED 6 MILES NORTH OF
GLAZIER TEXAS...MOVING NORTHEAST AT 40 MPH. THIS STORM WILL APPROACH
ELLIS COUNTY OKLAHOMA BEFORE 9 PM. BE ALERT FOR THE APPROACH OF THIS
STORM IN THE SHATTUCK AREA AND BE PREPARED TO TAKE ACTION IF A
WARNING IS ISSUED.

LAT...LON 3644 10000 3623 9979 3612 10000
TIME...MOT...LOC 0216Z 231DEG 34KT 3610 10027

..SPEG.

Local storm report, Nov 16, 9:20 PM CST, 35 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
920 PM CST MON NOV 16 2015

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

0855 PM     HAIL             13 N SHATTUCK           36.46N 99.88W
11/16/2015  E1.75 INCH       ELLIS              OK   TRAINED SPOTTER

            HWY 283 13 MILES N OF SHATTUCK.

0905 PM     TSTM WND DMG     12 N SHATTUCK           36.45N 99.88W
11/16/2015                   ELLIS              OK   EMERGENCY MNGR

            1 MILE OF POWER PLOES DOWN, HOME DAMAGED. HWY 15 .5 MILE
            WEST OF 283.

&&

DW

Special weather statement, Nov 16, 9:36 PM CST, 19 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
936 PM CST MON NOV 16 2015

OKZ014-021-033-034-036-TXZ083-170415-
HARMON OK-GREER OK-ROGER MILLS OK-BECKHAM OK-JACKSON OK-HARDEMAN TX-
936 PM CST MON NOV 16 2015

...SIGNIFICANT WEATHER ADVISORY FOR HARMON...GREER...SOUTHERN ROGER
MILLS...BECKHAM...SOUTHWESTERN JACKSON AND NORTHWESTERN HARDEMAN
COUNTIES UNTIL 1015 PM CST...

AT 934 PM CST...STRONG THUNDERSTORMS WERE ALONG A LINE EXTENDING FROM
6 MILES EAST OF TWITTY TO 9 MILES NORTHEAST OF WELLINGTON TO 7 MILES
SOUTHWEST OF KIRKLAND...MOVING NORTHEAST AT 45 MPH.

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

LOCATIONS IMPACTED INCLUDE...
ELK CITY...SAYRE...MANGUM...HOLLIS...CHEYENNE...ERICK...ELDORADO...
CARTER...WILLOW...GOULD...SWEETWATER...STRONG CITY...TEXOLA...DUKE...
GOODLETT...VINSON...DELHI...LAZARE...BERLIN AND BRINKMAN.

THIS INCLUDES INTERSTATE 40 BETWEEN MILE MARKERS 0 AND 37.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3546 10000 3577 9948 3521 9939 3448 9950
      3422 9999 3422 10000
TIME...MOT...LOC 0334Z 238DEG 40KT 3531 10012 3491 10005 3430 10014

MAHALE

Local storm report, Nov 16, 9:52 PM CST, 3 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
952 PM CST MON NOV 16 2015

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

0946 PM     TSTM WND DMG     5 WNW FORT SUPPLY       36.60N 99.66W
11/16/2015                   HARPER             OK   TRAINED SPOTTER

            FIVE POWERPOLES BROKEN AT THE BASE.

&&

RBARNES

The office that day

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

Issued	Product	Office	Counties	Lasted
Nov 16, 8:21 PM CST	Special Weather Statement	OUN	Ellis	24 min
Nov 16, 8:42 PM CST	Tornado Warning	OUN	Ellis	33 min
Nov 16, 9:15 PM CST	Tornado Warning	OUN	Ellis, Harper, Woodward	30 min
Nov 16, 9:36 PM CST	Special Weather Statement	OUN	Beckham, Greer, Harmon	39 min
Nov 16, 9:45 PM CST	Tornado Warning Tornado observed	OUN	Harper, Woods	33 min
Nov 16, 9:56 PM CST	Tornado Warning	OUN	Harper	49 min
Nov 16, 10:34 PM CST	Tornado Warning	OUN	Harper	26 min
Nov 16, 10:35 PM CST	Severe Thunderstorm Warning	OUN	Beckham, Custer, Greer, Kiowa, Washita	40 min
Nov 16, 11:14 PM CST	Special Weather Statement	OUN	Washita	46 min
Nov 16, 11:21 PM CST	Special Weather Statement	OUN	Jackson, Tillman	39 min
Nov 16, 11:23 PM CST	Special Weather Statement	OUN	Blaine, Dewey, Harper, Major, Woods, Woodward	37 min
Nov 16, 11:25 PM CST	Severe Thunderstorm Warning	OUN	Blaine, Caddo, Canadian, Custer, Kingfisher, Washita	50 min
Nov 16, 11:48 PM CST	Areal Flood Advisory	OUN	Greer	57 min
Nov 16, 11:59 PM CST	Special Weather Statement	OUN	Alfalfa, Blaine, Major, Woods	31 min
Nov 17, 12:10 AM CST	Severe Thunderstorm Warning	OUN	Alfalfa, Major	35 min
Nov 17, 12:13 AM CST	Severe Thunderstorm Warning	OUN	Blaine, Canadian, Garfield, Kingfisher, Major	47 min
Nov 17, 12:17 AM CST	Special Weather Statement	OUN	Comanche, Cotton, Tillman	43 min
Nov 17, 12:30 AM CST	Severe Thunderstorm Warning	OUN	Garfield, Grant	30 min
Nov 17, 12:34 AM CST	Severe Thunderstorm Warning	OUN	Caddo, Comanche, Cotton, Grady, Stephens, Tillman	41 min
Nov 17, 12:59 AM CST	Severe Thunderstorm Warning	OUN	Garfield, Grant, Kay, Kingfisher, Logan, Noble and 1 more	46 min
Nov 17, 1:07 AM CST	Severe Thunderstorm Warning	OUN	Cotton	23 min
Nov 17, 1:20 AM CST	Special Weather Statement	OUN	Canadian, Grady, Oklahoma	40 min
Nov 17, 1:25 AM CST	Severe Thunderstorm Warning	OUN	Cotton, Jefferson, Stephens	50 min
Nov 17, 1:45 AM CST	Severe Thunderstorm Warning	OUN	Kay, Lincoln, Logan, Noble, Payne	45 min
Nov 17, 2:09 AM CST	Severe Thunderstorm Warning	OUN	Carter, Cleveland, Garvin, Grady, Jefferson, Love and 3 more	51 min
Nov 17, 2:27 AM CST	Severe Thunderstorm Warning	OUN	Kay	33 min
Nov 17, 2:35 AM CST	Special Weather Statement	OUN	Cleveland, Lincoln, McClain, Oklahoma, Payne, Pottawatomie	25 min
Nov 17, 2:57 AM CST	Special Weather Statement	OUN	Carter, Love, Murray, Pontotoc	48 min
Nov 17, 3:08 AM CST	Wind Advisory	OUN	Greer, Harmon, Jackson, Kiowa, Tillman	15 hr
Nov 17, 4:01 AM CST	Special Weather Statement	OUN	Atoka, Bryan, Coal, Hughes, Johnston, Marshall	44 min
Nov 17, 4:47 AM CST	Special Weather Statement	OUN	Atoka, Bryan, Coal	43 min
Nov 16, 10:50 PM CST	Special Weather Statement	OUN	Foard, Hardeman, Knox, Wilbarger	25 min
Nov 17, 12:45 AM CST	Severe Thunderstorm Warning	OUN	Archer, Clay	45 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 2015 Severe Thunderstorm Warnings in Texas, 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.