Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 363, NWS Norman, OK

May 18, 2017Dewey County, Major County, Woodward County, Oklahoma

NWS Norman, OK issued this severe thunderstorm warning at May 18, 2017, 6:29 PM CDT for Dewey County, Major County, Woodward County, Oklahoma. It was in force for 46 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: May 18, 2017, 6:29 PM CDT (23:29 UTC)
Expired: May 18, 2017, 7:15 PM CDT
In force: 46 min
Issued by: NWS Norman, OK
Area: Storm-based polygon
Hail: 1.25 in
Wind: 60.0 mph

Counties Dewey County, OK, Major County, OK, Woodward County, OK

The radar

The Vance AFB radar (KVNX), 91 km from the middle of the area, began a volume at 23:30 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
May 18, 1:18 PM CDT	Tornado Watch PDS	SPC	7 hr

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 May 18, 2:23 PM CDT, 4 hours 6 minutes earlier.

Area forecast discussion, May 18, 2:23 PM CDT, 4 hours 6 minutes before

Area Forecast Discussion
National Weather Service Norman OK
223 PM CDT Thu May 18 2017

.DISCUSSION...
Main focus was on the severe weather and heavy rain potential
through Saturday.

Now through 7 pm this evening, isolated to scattered discrete
supercells are expected to continue to move northeast across parts
of western north Texas, western Oklahoma, central Oklahoma, and
northern Oklahoma, mainly near and just southeast of a low level
cloud shield/differential heating boundary that extended from near
Clinton to Enid to Ponca City as of 215 pm. The Lawton, Oklahoma
City, and Stillwater areas could be affected by these dangerous
storms in the next few hours. These storms will continue to produce
giant hail, damaging winds, and tornadoes. Tornado potential will
only increase over the next few hours as low level shear increases.
The greatest potential for tornadoes may be shifting farther south
and east than previously forecast.

Across far northwestern Oklahoma now through 7 pm this evening,
additional discrete supercells may form with giant hail, tornadoes,
and damaging winds. Not sure that this activity will be more robust
compared to activity near the line mentioned due to more cloud cover
to limit destabilization.

Capping may be too strong for storm development south of a Knox
City, Texas to Wichita Falls to Ada line now through 7 pm this
evening.

Severe storms will remain possible this evening as they move
east. Models show the area of storm development in NW OK developing
down towards central OK as they move east tonight. In addition to
large hail, strong winds, and tornadoes possible, heavy rain that
could produce flash flooding in some locations will also be a
concern.

On Friday... Upper low and shortwave rotating around the low will
affect the region with a cold front moving across the area.
Widespread storms are expected to develop Friday afternoon and
continue into Friday night. Severe storms will be possible once
again. The potential for heavy rain and flash flooding will likely
be higher Friday than today across a larger area. 3-5 inches of
rain with locally higher amounts will be possible by Saturday
morning. With the heavy rain and flash flood potential, a Flood
Watch was issued earlier today for all but Harper county in NW OK.
It is in effect from 7 PM this evening through 7 AM Saturday. Models
show the rain shifting east and south of the area Saturday as the
front moves out of the area and the upper low lifts NE.

Shower and thunderstorm chances will return to the area Sunday
night and continue into Tuesday.

&&

.PRELIMINARY POINT TEMPS/POPS...
Oklahoma City OK  68  77  55  71 /  70  70  90  20
Hobart OK         64  81  53  73 /  40  90  70  10
Wichita Falls TX  69  84  58  76 /  60  70  80  20
Gage OK           57  75  47  69 /  40  50  30   0
Ponca City OK     66  78  54  69 /  70  70  80  10
Durant OK         70  84  66  76 /  60  50  80  60

&&

.OUN WATCHES/WARNINGS/ADVISORIES...
OK...Flood Watch from 7 PM CDT this evening through Saturday morning
     for OKZ005>048-050>052.

TX...Flood Watch from 7 PM CDT this evening through Saturday morning
     for TXZ083>090.

&&

06/25

Hazardous weather outlook, May 18, 4:54 PM CDT, 1 hour 35 minutes before

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In the hours before

Local storm report, May 18, 6:16 PM CDT, 13 minutes before

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Local storm report, May 18, 6:18 PM CDT, 11 minutes before

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Special weather statement, May 18, 6:18 PM CDT, 11 minutes before

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Local storm report, May 18, 6:19 PM CDT, 10 minutes before

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Local storm report, May 18, 6:21 PM CDT, 8 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
621 PM CDT THU MAY 18 2017

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

0616 PM     TSTM WND GST     4 E LAWTON              34.60N 98.35W
05/18/2017  M62 MPH          COMANCHE           OK   AMATEUR RADIO

            MEASURED AT SE 45TH AND HIGHWAY 7

&&

MBS

Local storm report, May 18, 6:27 PM CDT, 2 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
May 18, 11:06 AM CDT	Flood Watch	OUN	Alfalfa, Atoka, Beckham, Blaine, Bryan, Caddo and 41 more	40 hr
May 18, 1:13 PM CDT	Special Weather Statement	OUN	Jackson	32 min
May 18, 1:19 PM CDT	Severe Thunderstorm Warning	OUN	Greer, Harmon, Jackson, Kiowa	56 min
May 18, 1:58 PM CDT	Tornado Warning	OUN	Greer, Harmon, Jackson, Kiowa	47 min
May 18, 2:01 PM CDT	Severe Thunderstorm Warning	OUN	Harmon, Jackson	44 min
May 18, 2:11 PM CDT	Special Weather Statement	OUN	Ellis, Roger Mills	34 min
May 18, 2:13 PM CDT	Special Weather Statement	OUN	Beckham	32 min
May 18, 2:25 PM CDT	Severe Thunderstorm Warning	OUN	Beckham, Custer, Roger Mills, Washita	50 min
May 18, 2:28 PM CDT	Severe Thunderstorm Warning	OUN	Ellis, Roger Mills	47 min
May 18, 2:38 PM CDT	Tornado Warning	OUN	Greer, Jackson, Kiowa, Washita	52 min
May 18, 2:41 PM CDT	Severe Thunderstorm Warning	OUN	Greer, Harmon, Jackson	32 min
May 18, 2:55 PM CDT	Severe Thunderstorm Warning	OUN	Custer, Dewey, Ellis, Roger Mills	50 min
May 18, 3:02 PM CDT	Severe Thunderstorm Warning	OUN	Ellis, Harper, Woodward	58 min
May 18, 3:14 PM CDT	Severe Thunderstorm Warning	OUN	Ellis, Woodward	46 min
May 18, 3:17 PM CDT	Severe Thunderstorm Warning	OUN	Caddo, Custer, Kiowa, Washita	58 min
May 18, 3:21 PM CDT	Areal Flood Advisory	OUN	Greer, Kiowa, Washita	3 hr
May 18, 3:29 PM CDT	Tornado Warning	OUN	Caddo, Washita	46 min
May 18, 3:34 PM CDT	Severe Thunderstorm Warning	OUN	Beckham, Greer, Kiowa, Washita	41 min
May 18, 3:37 PM CDT	Severe Thunderstorm Warning	OUN	Major, Woods, Woodward	38 min
May 18, 3:40 PM CDT	Tornado Warning	OUN	Dewey	35 min
May 18, 3:52 PM CDT	Severe Thunderstorm Warning	OUN	Harper, Woods, Woodward	53 min
May 18, 4:02 PM CDT	Tornado Warning	OUN	Woods, Woodward	18 min
May 18, 4:07 PM CDT	Tornado Warning	OUN	Blaine, Caddo, Custer, Washita	38 min
May 18, 4:10 PM CDT	Special Weather Statement	OUN	Alfalfa	35 min
May 18, 4:11 PM CDT	Tornado Warning	OUN	Washita	34 min
May 18, 4:11 PM CDT	Tornado Warning	OUN	Dewey, Major, Woodward	34 min
May 18, 4:11 PM CDT	Tornado Warning	OUN	Tillman	34 min
May 18, 4:18 PM CDT	Severe Thunderstorm Warning	OUN	Alfalfa, Woods	57 min
May 18, 4:26 PM CDT	Severe Thunderstorm Warning	OUN	Ellis, Woodward	49 min
May 18, 4:34 PM CDT	Tornado Warning Tornado observedConsiderable damage threat	OUN	Major, Woods, Woodward	41 min
May 18, 4:35 PM CDT	Tornado Warning	OUN	Woods	40 min
May 18, 4:38 PM CDT	Severe Thunderstorm Warning	OUN	Ellis, Roger Mills	67 min
May 18, 4:40 PM CDT	Tornado Warning	OUN	Caddo, Custer, Washita	25 min
May 18, 4:41 PM CDT	Flash Flood Warning	OUN	Blaine, Caddo, Custer, Washita	3 hr
May 18, 4:42 PM CDT	Tornado Warning	OUN	Blaine, Canadian, Custer	48 min
May 18, 4:43 PM CDT	Severe Thunderstorm Warning	OUN	Tillman	47 min
May 18, 4:53 PM CDT	Special Weather Statement	OUN	Harper	37 min
May 18, 4:53 PM CDT	Tornado Warning	OUN	Tillman	37 min
May 18, 5:03 PM CDT	Tornado Warning Tornado observed	OUN	Woods, Woodward	32 min
May 18, 5:04 PM CDT	Flash Flood Warning	OUN	Tillman	3 hr
May 18, 5:09 PM CDT	Special Weather Statement	OUN	Cleveland, Oklahoma	36 min
May 18, 5:13 PM CDT	Tornado Warning Tornado observed	OUN	Blaine, Canadian, Kingfisher	32 min
May 18, 5:15 PM CDT	Severe Thunderstorm Warning	OUN	Cleveland, Lincoln, McClain, Oklahoma, Pottawatomie	45 min
May 18, 5:22 PM CDT	Special Weather Statement	OUN	Ellis, Harper	38 min
May 18, 5:25 PM CDT	Severe Thunderstorm Warning	OUN	Comanche, Cotton, Tillman	50 min
May 18, 5:29 PM CDT	Severe Thunderstorm Warning	OUN	Blaine, Canadian, Kingfisher	31 min
May 18, 5:34 PM CDT	Severe Thunderstorm Warning	OUN	Alfalfa, Woods	29 min
May 18, 5:39 PM CDT	Severe Thunderstorm Warning	OUN	Woodward	51 min
May 18, 5:40 PM CDT	Special Weather Statement	OUN	Carter	35 min
May 18, 5:42 PM CDT	Severe Thunderstorm Warning	OUN	Dewey, Ellis, Roger Mills	48 min
May 18, 5:48 PM CDT	Severe Thunderstorm Warning	OUN	Comanche, Cotton	27 min
May 18, 5:50 PM CDT	Severe Thunderstorm Warning	OUN	Blaine, Kingfisher	40 min
May 18, 5:57 PM CDT	Severe Thunderstorm Warning	OUN	Cleveland, Lincoln, Logan, Oklahoma, Pottawatomie, Seminole	48 min
May 18, 5:59 PM CDT	Severe Thunderstorm Warning	OUN	Carter, Garvin, Murray	46 min
May 18, 6:07 PM CDT	Special Weather Statement	OUN	Carter	23 min
May 18, 6:12 PM CDT	Severe Thunderstorm Warning	OUN	Comanche, Cotton, Grady, Jefferson, Stephens, Tillman	48 min
May 18, 6:15 PM CDT	Special Weather Statement	OUN	Kay	30 min
May 18, 6:18 PM CDT	Special Weather Statement	OUN	Woods	27 min
May 18, 6:19 PM CDT	Tornado Warning	OUN	Cotton, Stephens	26 min
May 18, 6:27 PM CDT	Severe Thunderstorm Warning	OUN	Garfield, Kingfisher	48 min
May 18, 6:30 PM CDT	Special Weather Statement	OUN	Woodward	30 min
May 18, 6:33 PM CDT	Severe Thunderstorm Warning	OUN	Cleveland, Garvin, McClain	42 min
May 18, 6:34 PM CDT	Special Weather Statement	OUN	Ellis	26 min
May 18, 6:44 PM CDT	Severe Thunderstorm Warning	OUN	Woods, Woodward	46 min
May 18, 6:47 PM CDT	Severe Thunderstorm Warning	OUN	Lincoln, Pottawatomie	43 min
May 18, 6:55 PM CDT	Special Weather Statement	OUN	Kingfisher	35 min
May 18, 6:55 PM CDT	Severe Thunderstorm Warning	OUN	Comanche, Cotton, Grady, Jefferson, Stephens, Tillman	50 min
May 18, 1:25 PM CDT	Special Weather Statement	OUN	Foard	50 min
May 18, 1:46 PM CDT	Special Weather Statement	OUN	Hardeman	29 min
May 18, 2:10 PM CDT	Severe Thunderstorm Warning	OUN	Foard, Hardeman, Knox	50 min
May 18, 2:45 PM CDT	Tornado Warning	OUN	Foard, Hardeman	30 min
May 18, 3:00 PM CDT	Tornado Warning	OUN	Foard, Wilbarger	45 min
May 18, 3:10 PM CDT	Severe Thunderstorm Warning	OUN	Foard, Hardeman, Wilbarger	35 min
May 18, 3:39 PM CDT	Tornado Warning	OUN	Wilbarger	36 min
May 18, 3:43 PM CDT	Severe Thunderstorm Warning	OUN	Foard, Hardeman, Wilbarger	47 min
May 18, 4:17 PM CDT	Areal Flood Advisory	OUN	Foard, Hardeman, Wilbarger	3 hr
May 18, 4:20 PM CDT	Severe Thunderstorm Warning	OUN	Wilbarger	40 min
May 18, 5:34 PM CDT	Special Weather Statement	OUN	Baylor	26 min
May 18, 5:56 PM CDT	Severe Thunderstorm Warning	OUN	Baylor, Wilbarger	34 min
May 18, 6:27 PM CDT	Severe Thunderstorm Warning	OUN	Archer, Baylor	33 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 2017 Every severe thunderstorm warning in 2017

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive.