Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 535, NWS Norman, OK

June 29, 2015Caddo County, Washita County, Oklahoma

NWS Norman, OK issued this severe thunderstorm warning at Jun 29, 2015, 5:57 PM CDT for Caddo County, Washita County, Oklahoma. It was in force for 31 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: Jun 29, 2015, 5:57 PM CDT (22:57 UTC)
Expired: Jun 29, 2015, 6:28 PM CDT
In force: 31 min
Issued by: NWS Norman, OK
Area: Storm-based polygon
Hail: 1.25 in
Wind: 60.0 mph

Counties Caddo County, OK, Washita County, OK

The radar

The Altus AFB radar (KFDR), 100 km from the middle of the area, began a volume at 22:58 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, 11.0 hours before the alert went out and 117 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: 23 J/kg
Mixed-layer CIN: -454 J/kg
Mixed-layer LCL: 1975 m above ground
0-6 km bulk shear: 26 kt
0-1 km storm-relative helicity: 61 m²/s²
0-3 km storm-relative helicity: 180 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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 Jun 29, 2:36 PM CDT, 3 hours 21 minutes earlier.

Area forecast discussion, Jun 29, 2:36 PM CDT, 3 hours 21 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORMAN OK
236 PM CDT MON JUN 29 2015

.DISCUSSION...
AN UPPER LEVEL RIDGE WILL CONTINUE TO DOMINATE IN THE SHORT
TERM...KEEPING TUESDAY AND WEDNESDAY HOT AND FAIRLY DRY. WITH
ABUNDANT MOISTURE IN THE AREA...HEAT INDICES WILL REACH INTO THE
TRIPLE DIGITS.

ENTERING INTO THURSDAY...THE RIDGE BEGINS TO BREAK DOWN AS A
SHORT WAVE AND ASSOCIATED COLD FRONT SWINGS THROUGH. RAIN CHANCES
WILL INCREASE THURSDAY THROUGH SATURDAY...SO WE MAY SEE A FAIRLY
WET 4TH OF JULY. ENOUGH INSTABILITY AND SHEAR WILL BE IN PLACE FOR
A FEW STRONG TO SEVERE STORMS...BUT WIDESPREAD SEVERE WEATHER IS
NOT EXPECTED. THIS COLD FRONT WILL ALSO COOL THINGS OFF A BIT
THROUGH THE WEEKEND...BRINGING HIGHS DOWN INTO THE 80S.

AFTER THIS SYSTEM MOVES OUT SATURDAY NIGHT...THE RIDGE BEGINS TO
BUILD BACK IN...SIGNALING A RETURN OF HOT AND DRY WEATHER FOR
EARLY NEXT WEEK.

MAD

&&

.PRELIMINARY POINT TEMPS/POPS...CORRECTED
OKLAHOMA CITY OK  71  96  74  95 /  10   0   0  10
HOBART OK         69  98  74  98 /  20   0   0   0
WICHITA FALLS TX  73  97  75  98 /  20   0   0   0
GAGE OK           66  97  74  99 /  10   0   0  20
PONCA CITY OK     70  98  78  99 /   0   0   0  20
DURANT OK         71  95  72  94 /  20  10  10  10

&&

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

04/14

Hazardous weather outlook, Jun 29, 11:50 AM CDT, 6 hours 7 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE NORMAN OK
1150 AM CDT MON JUN 29 2015

OKZ004>048-050>052-TXZ083>090-301700-
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-
1150 AM CDT MON JUN 29 2015

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...
WIDELY SCATTERED SHOWERS AND THUNDERSTORMS WILL REMAIN POSSIBLE
THROUGH LATE TONIGHT ALONG A FRONTAL BOUNDARY DRAPED ACROSS
SOUTHERN OKLAHOMA AND ALONG AN OUTFLOW BOUNDARY ACROSS WESTERN
NORTH TEXAS. A FEW STRONG STORMS MAY PRODUCE BRIEF HEAVY
RAINFALL... WIND GUSTS NEAR 40 TO 50 MPH... AND SMALL HAIL UP TO
THE SIZE OF DIMES.

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

.THUNDERSTORMS...
THUNDERSTORM CHANCES WILL CONTINUE THROUGH THE WORK WEEK.
ALTHOUGH WIDESPREAD SEVERE WEATHER IS NOT ANTICIPATED AT THIS
TIME... A FEW STRONG TO SEVERE STORMS WILL BE POSSIBLE LATE THIS
WEEK THROUGH THE WEEKEND. HEAVY RAINFALL MAY ALSO RESULT IN
LOCALIZED FLOODING.

.HEAT...
HOT AND HUMID CONDITIONS ARE EXPECTED TUESDAY AND WEDNESDAY...WITH
HEAT INDICES REACHING THE LOW 100S ACROSS PORTIONS OF OKLAHOMA.
WEDNESDAY WILL LIKELY BE THE HOTTEST DAY AS TEMPERATURES APPROACH
OR EXCEED 100 DEGREES ACROSS NORTHWESTERN OKLAHOMA.

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

JTK

In the hours before

Local storm report, Jun 29, 5:17 PM CDT, 40 minutes before

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Local storm report, Jun 29, 5:19 PM CDT, 38 minutes before

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Special weather statement, Jun 29, 5:28 PM CDT, 29 minutes before

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Special weather statement, Jun 29, 5:43 PM CDT, 14 minutes before

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Local storm report, Jun 29, 5:49 PM CDT, 8 minutes before

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Local storm report, Jun 29, 5:56 PM CDT, 1 minute 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
Jun 28, 9:08 PM CDT	Special Weather Statement	OUN	Kay	37 min
Jun 28, 9:45 PM CDT	Special Weather Statement	OUN	Kay	30 min
Jun 29, 2:06 AM CDT	Special Weather Statement	OUN	Kingfisher	39 min
Jun 29, 2:30 AM CDT	Special Weather Statement	OUN	Canadian	45 min
Jun 29, 2:37 AM CDT	Special Weather Statement	OUN	Greer	38 min
Jun 29, 2:55 AM CDT	Special Weather Statement	OUN	Cleveland	50 min
Jun 29, 3:09 AM CDT	Special Weather Statement	OUN	Jackson	51 min
Jun 29, 3:34 AM CDT	Special Weather Statement	OUN	Cleveland, McClain	41 min
Jun 29, 4:48 AM CDT	Special Weather Statement	OUN	Comanche	42 min
Jun 29, 4:02 PM CDT	Special Weather Statement	OUN	Washita	28 min
Jun 29, 4:20 PM CDT	Special Weather Statement	OUN	Grady	25 min
Jun 29, 4:46 PM CDT	Special Weather Statement	OUN	Washita	29 min
Jun 29, 4:57 PM CDT	Special Weather Statement	OUN	Caddo	33 min
Jun 29, 5:05 PM CDT	Areal Flood Advisory	OUN	Caddo, Canadian	115 min
Jun 29, 5:08 PM CDT	Special Weather Statement	OUN	Grady	22 min
Jun 29, 5:13 PM CDT	Severe Thunderstorm Warning	OUN	Canadian, Grady	32 min
Jun 29, 5:16 PM CDT	Severe Thunderstorm Warning	OUN	Caddo, Canadian	29 min
Jun 29, 5:28 PM CDT	Special Weather Statement	OUN	Washita	32 min
Jun 29, 5:40 PM CDT	Severe Thunderstorm Warning	OUN	Caddo, Grady	39 min
Jun 29, 5:43 PM CDT	Special Weather Statement	OUN	Caddo	47 min
Jun 29, 5:55 PM CDT	Areal Flood Advisory	OUN	Grady	2 hr
Jun 29, 6:02 PM CDT	Areal Flood Advisory	OUN	Caddo, Custer, Washita	118 min
Jun 29, 6:22 PM CDT	Special Weather Statement	OUN	Caddo	38 min
Jun 29, 6:24 PM CDT	Special Weather Statement	OUN	Washita	36 min
Jun 29, 6:42 PM CDT	Special Weather Statement	OUN	Caddo	33 min
Jun 29, 6:48 PM CDT	Areal Flood Advisory	OUN	Caddo, Grady	117 min
Jun 29, 6:57 PM CDT	Special Weather Statement	OUN	Canadian	33 min
Jun 29, 5:26 AM CDT	Special Weather Statement	OUN	Foard	34 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.