Alert archive / Oklahoma / Special Weather Statements in 2017

Special Weather Statement, NWS Norman, OK

July 15, 2017Custer County, Oklahoma

NWS Norman, OK issued this special weather statement at Jul 15, 2017, 6:13 PM CDT for Custer County, Oklahoma. It was in force for 32 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jul 15, 2017, 6:13 PM CDT (23:13 UTC)
Expired: Jul 15, 2017, 6:45 PM CDT
In force: 32 min
Issued by: NWS Norman, OK

County Custer County, OK

The radar

The Altus AFB radar (KFDR), 135 km from the middle of the area, began a volume at 23:12 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 nearest sounding before it

Norman, OK (KOUN), launched 12:00Z, 11.2 hours before the alert went out and 158 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: 959 J/kg
Mixed-layer CIN: -141 J/kg
Mixed-layer LCL: 1336 m above ground
0-6 km bulk shear: 7 kt
0-1 km storm-relative helicity: 90 m²/s²
0-3 km storm-relative helicity: 259 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at Jul 15, 2:09 PM CDT, 4 hours 4 minutes earlier.

Area forecast discussion, Jul 15, 2:09 PM CDT, 4 hours 4 minutes before

Area Forecast Discussion
National Weather Service Norman OK
209 PM CDT Sat Jul 15 2017

.DISCUSSION...
Isolated showers and a few thunderstorms are expected over western
Oklahoma until around sunset today in the very moist and hot
environment. Overnight, some thunderstorms and rain are expected
to move southeast from western Kansas across a larger part of
western Oklahoma, ending after sunrise in southwest Oklahoma. This
will be along a weak surface trough and weak upslope flow in the
thermodynamically favorable environment. Beyond Sunday, rain
chances decrease everywhere and the heat increases. By the middle
of next week temperatures will again be above seasonable normals
in the very humid atmosphere. A strong upper high will range
across the central and southern plains, more or less, east to
west. This will keep the westerlies far removed from Oklahoma and
the heat here. Rain chances remain very low beyond next week.

&&

.PRELIMINARY POINT TEMPS/POPS...
Oklahoma City OK  74  93  72  93 /  20  20  20  20
Hobart OK         73  94  73  95 /  30  30  10  10
Wichita Falls TX  74  94  73  95 /  30  20  10  10
Gage OK           70  91  71  94 /  30  30  10  10
Ponca City OK     71  92  71  93 /  10  10  10   0
Durant OK         75  93  72  92 /  20  10   0  10

&&

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

14/09

Hazardous weather outlook, Jul 15, 11:56 AM CDT, 6 hours 17 minutes before

Hazardous Weather Outlook...UPDATED
National Weather Service Norman OK
1156 AM CDT Sat Jul 15 2017

OKZ004>048-050>052-TXZ083>090-161700-
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-
1156 AM CDT Sat Jul 15 2017

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...
Scattered showers and thunderstorms are possible through tonight
across mainly the western half of Oklahoma. No organized severe
weather is expected but gusty winds could be possible with the
strongest storms. Heavy rain will also be a concern through
tonight.

.DAYS TWO THROUGH SEVEN...Sunday through Friday...

.Thunderstorms...
Showers and thunderstorms will remain possible Sunday, mainly
across portions of western Oklahoma and western north Texas. Gusty
winds and heavy rain will be the main concerns.

Low thunderstorm chances are also forecast for parts of the area
Wednesday and Thursday afternoons.

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, Jul 15, 5:55 PM CDT, 18 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE Norman OK
555 PM CDT SAT JUL 15 2017

OKZ009-010-152330-
Woodward OK-Ellis OK-
555 PM CDT SAT JUL 15 2017

...SIGNIFICANT WEATHER ADVISORY FOR western Woodward and east
central Ellis Counties Until 630 PM CDT...

AT 553 PM CDT, strong thunderstorms were along a line extending from
4 miles north of Woodward to 4 miles south of Fargo, moving south at
20 MPH.

HAZARDS INCLUDE...
Wind gusts over 50 MPH...

Locations impacted include...
Woodward, Mooreland, Fargo, Sharon and Tangier.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Monitor the weather situation closely and be alert for threatening
weather conditions.

&&

LAT...LON 3660 9936 3660 9930 3649 9919 3635 9919
      3619 9949 3614 9965 3636 9969
TIME...MOT...LOC 2253Z 342DEG 19KT 3649 9937 3632 9960

BRB

Special weather statement, Jul 15, 5:55 PM CDT, 18 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE Norman OK
555 PM CDT SAT JUL 15 2017

OKZ028-040-152330-
Garvin OK-McClain OK-
555 PM CDT SAT JUL 15 2017

...SIGNIFICANT WEATHER ADVISORY FOR northwestern Garvin and
southwestern McClain Counties Until 630 PM CDT...

AT 553 PM CDT, a strong thunderstorm was located 5 miles northwest of
Maysville, moving south at 25 MPH.

HAZARDS INCLUDE...
Wind gusts to 50 MPH...
Minor flooding in areas of poor drainage...

Locations impacted include...
Pauls Valley, Purcell, Lindsay, Maysville, Wayne, Paoli, Antioch,
Criner, Whitebead, Erin Springs and Payne.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Monitor the weather situation closely and be alert for threatening
weather conditions.

&&

LAT...LON 3469 9764 3501 9757 3495 9728 3463 9725
TIME...MOT...LOC 2253Z 350DEG 20KT 3488 9747

MAHALE

Special weather statement, Jul 15, 6:04 PM CDT, 9 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE Norman OK
604 PM CDT SAT JUL 15 2017

OKZ009-014-152330-
Roger Mills OK-Ellis OK-
604 PM CDT SAT JUL 15 2017

...SIGNIFICANT WEATHER ADVISORY FOR northern Roger Mills and southern
Ellis Counties Until 630 PM CDT...

AT 603 PM CDT, strong thunderstorms were along a line extending from
11 miles southwest of Arnett to 11 miles northwest of Angora, moving
southeast at 15 MPH.

HAZARDS INCLUDE...
Wind gusts over 50 MPH...
Minor flooding in areas of poor drainage...

Locations impacted include...
Arnett.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Monitor the weather situation closely and be alert for threatening
weather conditions.

&&

LAT...LON 3588 10000 3587 9946 3603 9947 3608 9963
      3621 9976 3611 10000
TIME...MOT...LOC 2303Z 293DEG 12KT 3600 9987 3594 9960

BRB

Local storm report, Jul 15, 6:09 PM CDT, 4 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
609 PM CDT SAT JUL 15 2017

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

0600 PM     TSTM WND DMG     WOODWARD                36.42N 99.40W
07/15/2017                   WOODWARD           OK   CO-OP OBSERVER

            TREE LIMBS DOWNED FROM ESTIMATED 60-70 MPH. PENNY SIZE
            HAIL REPORTED AS WELL.

&&

MBS

Special weather statement, Jul 15, 6:12 PM CDT, 1 minute before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE Norman OK
612 PM CDT SAT JUL 15 2017

OKZ014>016-152345-
Roger Mills OK-Dewey OK-Custer OK-
612 PM CDT SAT JUL 15 2017

...SIGNIFICANT WEATHER ADVISORY FOR east central Roger Mills...
southwestern Dewey and northwestern Custer Counties Until 645 PM
CDT...

AT 609 PM CDT, a strong thunderstorm was located over Leedey, moving
south at 10 MPH.

HAZARDS INCLUDE...
Wind gusts over 50 MPH...
Minor flooding in areas of poor drainage...

Locations impacted include...
Leedey and Angora.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Monitor the weather situation closely and be alert for threatening
weather conditions.

&&

LAT...LON 3593 9945 3597 9927 3578 9916 3574 9944
TIME...MOT...LOC 2309Z 352DEG 8KT 3587 9935

BRB

Special weather statement, Jul 15, 6:13 PM CDT, 0 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE Norman OK
613 PM CDT SAT JUL 15 2017

OKZ016-152345-
Custer OK-
613 PM CDT SAT JUL 15 2017

...SIGNIFICANT WEATHER ADVISORY FOR south central Custer County Until
645 PM CDT...

AT 612 PM CDT, a strong thunderstorm was located 6 miles southeast of
Butler, moving south at 10 MPH.

HAZARDS INCLUDE...
Wind gusts over 50 MPH...
Minor flooding in areas of poor drainage...

Locations impacted include...
Clinton, Arapaho, Butler and Stafford.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Monitor the weather situation closely and be alert for threatening
weather conditions.

&&

LAT...LON 3564 9919 3569 9899 3554 9891 3546 9907
      3546 9918
TIME...MOT...LOC 2312Z 352DEG 7KT 3559 9910

BRB

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 15, 3:18 PM CDT	Special Weather Statement	OUN	Kiowa	57 min
Jul 15, 3:20 PM CDT	Special Weather Statement	OUN	Cleveland, Oklahoma	55 min
Jul 15, 3:23 PM CDT	Severe Thunderstorm Warning	OUN	Cleveland, Oklahoma	37 min
Jul 15, 3:42 PM CDT	Special Weather Statement	OUN	Canadian	33 min
Jul 15, 3:50 PM CDT	Special Weather Statement	OUN	Stephens	25 min
Jul 15, 4:00 PM CDT	Special Weather Statement	OUN	Cleveland	30 min
Jul 15, 4:04 PM CDT	Severe Thunderstorm Warning	OUN	Cleveland, McClain	41 min
Jul 15, 4:13 PM CDT	Severe Thunderstorm Warning	OUN	Beckham, Roger Mills	47 min
Jul 15, 4:17 PM CDT	Severe Thunderstorm Warning	OUN	Comanche, Grady, Stephens	43 min
Jul 15, 4:31 PM CDT	Areal Flood Advisory	OUN	Cleveland	3 hr
Jul 15, 4:40 PM CDT	Severe Thunderstorm Warning	OUN	Cleveland, McClain	50 min
Jul 15, 4:42 PM CDT	Special Weather Statement	OUN	Roger Mills	33 min
Jul 15, 4:44 PM CDT	Special Weather Statement	OUN	Harper	31 min
Jul 15, 4:45 PM CDT	Severe Thunderstorm Warning	OUN	Canadian, Oklahoma	45 min
Jul 15, 4:55 PM CDT	Special Weather Statement	OUN	Canadian	35 min
Jul 15, 5:10 PM CDT	Special Weather Statement	OUN	Roger Mills	20 min
Jul 15, 5:12 PM CDT	Special Weather Statement	OUN	Custer	18 min
Jul 15, 5:16 PM CDT	Special Weather Statement	OUN	Woodward	29 min
Jul 15, 5:17 PM CDT	Areal Flood Advisory	OUN	Canadian, Oklahoma	3 hr
Jul 15, 5:21 PM CDT	Special Weather Statement	OUN	Roger Mills	24 min
Jul 15, 5:24 PM CDT	Severe Thunderstorm Warning	OUN	Canadian, Cleveland, Grady, McClain, Oklahoma	40 min
Jul 15, 5:25 PM CDT	Special Weather Statement	OUN	McClain	35 min
Jul 15, 5:34 PM CDT	Special Weather Statement	OUN	Roger Mills	26 min
Jul 15, 5:47 PM CDT	Severe Thunderstorm Warning	OUN	Cleveland, McClain	18 min
Jul 15, 5:54 PM CDT	Special Weather Statement	OUN	Grady	36 min
Jul 15, 5:55 PM CDT	Special Weather Statement	OUN	Garvin	35 min
Jul 15, 5:58 PM CDT	Severe Thunderstorm Warning	OUN	Woodward	32 min
Jul 15, 6:00 PM CDT	Severe Thunderstorm Warning	OUN	Grady	33 min
Jul 15, 6:04 PM CDT	Special Weather Statement	OUN	Ellis	26 min
Jul 15, 6:12 PM CDT	Special Weather Statement	OUN	Dewey	33 min
Jul 15, 6:16 PM CDT	Severe Thunderstorm Warning	OUN	Custer, Dewey, Roger Mills	29 min
Jul 15, 6:28 PM CDT	Special Weather Statement	OUN	Garvin, Grady	32 min
Jul 15, 6:31 PM CDT	Special Weather Statement	OUN	Woodward	29 min
Jul 15, 6:46 PM CDT	Special Weather Statement	OUN	Dewey	29 min
Jul 15, 6:49 PM CDT	Areal Flood Advisory	OUN	Garvin, Grady, McClain	3 hr

Nearby

Special Weather Statements in Oklahoma, 2017 Every special weather statement 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.