Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 655, NWS Norman, OK

November 17, 2015Kay County, Oklahoma

NWS Norman, OK issued this severe thunderstorm warning at Nov 17, 2015, 2:27 AM CST for Kay County, Oklahoma. It was in force for 33 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 17, 2015, 2:27 AM CST (08:27 UTC)
Expired: Nov 17, 2015, 3:00 AM CST
In force: 33 min
Issued by: NWS Norman, OK
Area: Storm-based polygon
Hail: 0.75 in
Wind: 70.0 mph

County Kay County, OK

The radar

The Vance AFB radar (KVNX), 88 km from the middle of the area, began a volume at 08:30 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, 8.5 hours before the alert went out and 179 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, 11:16 PM CST, 3 hours 11 minutes earlier.

Area forecast discussion, Nov 16, 11:16 PM CST, 3 hours 11 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORMAN OK
1116 PM CST MON NOV 16 2015

.DISCUSSION...
PLEASE SEE THE 06Z AVIATION DISCUSSION BELOW.

&&

.AVIATION...
STORMS WILL CONTINUE TO MOVE INTO CENTRAL AND SOUTHWESTERN OK, AND
WESTERN NORTH TEXAS OVER THE NEXT COUPLE OF HOURS. VERY HEAVY
RAINFALL AND WIND GUSTS TO AT LEAST 45 KT CAN BE EXPECTED WITH THE
LINE OF STORMS. IN ADDITION, IFR TO LIFR CIGS WILL ALSO IMPACT
MOST OF THE TERMINALS. THE STORMS HAVE NOT MOVED AS FAST AS
INITIALLY ANTICIPATED SO EXPECT TSRA TO END AT ALL TERMINALS
AROUND 11-12Z.

&&

.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.
&&

99/03/03

Hazardous weather outlook, Nov 16, 9:57 PM CST, 4 hours 30 minutes before

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

OKZ004>048-050>052-TXZ083>090-180400-
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-
957 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 MOVE INTO WESTERN OKLAHOMA THROUGH
MIDNIGHT. STORMS WILL DEVELOP INTO A LINE AND MOVE EAST LATE
TONIGHT THROUGH THE EARLY MORNING HOURS... REACHING 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 INITIAL STORMS
MOVING INTO WESTERN OKLAHOMA THROUGH MIDNIGHT. THE RISK OF
TORNADOES WILL DECREASE OVERNIGHT AS STORMS MERGE INTO A SQUALL
LINE.

DISCUSSION...
STORMS WILL CONTINUE TO MOVE INTO WESTERN OKLAHOMA AND WESTERN
NORTH TEXAS THROUGH MIDNIGHT AS A STRONG FRONT CONTINUES TO PUSH
ACROSS THE REGION. UNSEASONABLY WARM... MOIST AIR HAS RESULTED IN
SUFFICIENT INSTABILITY... WHICH IS PAIRED WITH VERY STRONG WIND
SHEAR. INITIAL STORMS WILL CONTINUE TO DEVELOP AS SUPERCELLS...
WITH STORMS MERGING INTO A LINE THROUGH MIDNIGHT AS THEY CONTINUE
TO MOVE EASTWARD OVERNIGHT.

.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.

KURTZ

In the hours before

Local storm report, Nov 17, 12:59 AM CST, 1 hour 28 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
1259 AM CST TUE NOV 17 2015

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

1254 AM     TSTM WND GST     LAWTON                  34.60N 98.42W
11/17/2015  M73 MPH          COMANCHE           OK   TRAINED SPOTTER

&&

RBARNES

Special weather statement, Nov 17, 1:20 AM CST, 1 hour 7 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
120 AM CST TUE NOV 17 2015

OKZ023>025-027>029-038>040-044-170800-
OKLAHOMA OK-COMANCHE OK-CANADIAN OK-GRADY OK-COTTON OK-CADDO OK-
MCCLAIN OK-CLEVELAND OK-GARVIN OK-STEPHENS OK-
120 AM CST TUE NOV 17 2015

...SIGNIFICANT WEATHER ADVISORY FOR WESTERN OKLAHOMA...EASTERN
COMANCHE...CANADIAN...GRADY...NORTHEASTERN COTTON...SOUTHEASTERN
CADDO...WESTERN MCCLAIN...NORTHWESTERN CLEVELAND...NORTHWESTERN
GARVIN AND NORTHERN STEPHENS COUNTIES UNTIL 200 AM CST...

AT 119 AM CST...STRONG THUNDERSTORMS WERE ALONG A LINE EXTENDING FROM
6 MILES WEST OF PIEDMONT TO NEAR MINCO TO 4 MILES EAST OF CEMENT TO 3
MILES SOUTHEAST OF STERLING TO 7 MILES NORTHEAST OF WALTERS...MOVING
EAST AT 30 MPH.

HAZARDS INCLUDE...
WIND GUSTS TO 50 MPH...

LOCATIONS IMPACTED INCLUDE...
OKLAHOMA CITY...SOUTHWESTERN NORMAN...NORTHEASTERN LAWTON...EDMOND...
MOORE...MIDWEST CITY...DUNCAN...DEL CITY...EL RENO...CHICKASHA...
NEWCASTLE...BLANCHARD...MARLOW...WALTERS...YUKON...BETHANY...
MUSTANG...WARR ACRES...THE VILLAGE AND TUTTLE.

THIS INCLUDES THE FOLLOWING HIGHWAYS...
 INTERSTATE 35 BETWEEN MILE MARKERS 102 AND 146.
 INTERSTATE 40 BETWEEN MILE MARKERS 116 AND 158.
 INTERSTATE 44 BETWEEN MILE MARKERS 17 AND 24...AND BETWEEN MILE
MARKERS 54 AND 139.
 INTERSTATE 240 BETWEEN MILE MARKERS 1 AND 9.

LAT...LON 3430 9844 3460 9837 3528 9814 3572 9808
      3572 9733 3486 9750 3463 9762
TIME...MOT...LOC 0719Z 249DEG 27KT 3566 9785 3534 9795 3495 9806 3472
9813 3444 9822

KURTZ

Local storm report, Nov 17, 1:52 AM CST, 35 minutes before

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Local storm report, Nov 17, 2:06 AM CST, 21 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
206 AM CST TUE NOV 17 2015

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

0155 AM     TSTM WND GST     7 SSE RED ROCK          36.37N 97.13W
11/17/2015  M99 MPH          NOBLE              OK   MESONET

&&

MBS

Local storm report, Nov 17, 2:14 AM CST, 13 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
214 AM CST TUE NOV 17 2015

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

0206 AM     TSTM WND GST     2 NW PONCA CITY         36.73N 97.11W
11/17/2015  M61 MPH          KAY                OK   ASOS

&&

MBS

Local storm report, Nov 17, 2:26 AM CST, 1 minute before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
226 AM CST TUE NOV 17 2015

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

0220 AM     TSTM WND GST     8 E NEWKIRK             36.88N 96.91W
11/17/2015  M62 MPH          KAY                OK   MESONET

&&

MBS

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, 9:55 PM CST	Severe Thunderstorm Warning	OUN	Beckham, Greer, Harmon, Jackson, Kiowa, Washita	50 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, 2:35 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 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.