Alert archive / Oklahoma / Excessive Heat Warnings in 2016

Excessive Heat Warning 3, NWS Norman, OK

August 11, 201613 counties in Oklahoma

NWS Norman, OK issued this excessive heat warning at Aug 11, 2016, 2:15 PM CDT for 13 counties in Oklahoma. It was in force for 6 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Aug 11, 2016, 2:15 PM CDT (19:15 UTC)
Expired
Aug 11, 2016, 8:00 PM CDT
In force
6 hr
Issued by
NWS Norman, OK

Counties Canadian County, OK, Cleveland County, OK, Garfield County, OK, Grady County, OK, Grant County, OK, Kay County, OK, Kingfisher County, OK, Lincoln County, OK, Logan County, OK, McClain County, OK, Noble County, OK, Oklahoma County, OK, Payne County, OK

The radar

The Norman radar (KTLX), 63 km from the middle of the area, began a volume at 19:15 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

Dodge City, (KDDC), launched 12:00Z, 7.3 hours before the alert went out and 302 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-pSkew-T log-p diagram, Dodge City, at 12:00Z on 2016-08-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 309 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Dodge City, at 12:00Z on 2016-08-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 26 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
309 J/kg
Mixed-layer CIN
-201 J/kg
Mixed-layer LCL
1629 m above ground
0-6 km bulk shear
13 kt
0-1 km storm-relative helicity
26 m²/s²
0-3 km storm-relative helicity
98 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 excessive heat 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 excessive heat warning went out at Aug 11, 1:16 PM CDT, 59 minutes earlier.

Area forecast discussion, Aug 11, 1:16 PM CDT, 59 minutes before
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Hazardous weather outlook, Aug 11, 11:53 AM CDT, 2 hours 22 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE NORMAN OK
1153 AM CDT THU AUG 11 2016

OKZ004>048-050>052-TXZ083>090-121700-
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-
1153 AM CDT THU AUG 11 2016

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

.DAY ONE...THROUGH TONIGHT...

.THUNDERSTORMS...
THUNDERSTORMS WILL BE LIKELY ACROSS NORTHWEST OKLAHOMA TONIGHT AS
A COLD FRONT APPROACHES FROM KANSAS. GUSTY WINDS AND HEAVY
RAINFALL THAT COULD CAUSE FLOODING ARE THE PRIMARY HAZARDS.

.HEAT...
A HEAT ADVISORY IS IN EFFECT THIS AFTERNOON FOR THE EASTERN TWO-
THIRDS OF OKLAHOMA. HEAT INDEX VALUES OF 105 TO 110 ARE EXPECTED.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY...

.THUNDERSTORMS...
THUNDERSTORMS ARE LIKELY FRIDAY AND SATURDAY FROM NORTH TO SOUTH
ACROSS OKLAHOMA AND NORTHERN TEXAS WHEN A COLD FRONT PASSES. GUSTY
WINDS AND HEAVY RAINFALL THAT COULD CAUSE FLOODING ARE THE PRIMARY
HAZARDS. ISOLATED THUNDERSTORMS ARE EXPECTED MOST DAYS DURING THE
NEXT WEEK.

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

MAHALE

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 11, 2:55 PM CDTHeat AdvisoryOUNAtoka, Bryan, Carter, Coal, Hughes, Johnston and 8 more27 hr
Aug 11, 6:07 PM CDTSpecial Weather StatementOUNHarper38 min
Aug 11, 6:46 PM CDTSpecial Weather StatementOUNHarper29 min
Aug 11, 2:29 PM CDTSpecial Weather StatementOUNWichita31 min

Nearby

Excessive Heat Warnings in Oklahoma, 2016Every excessive heat warning in 2016

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.