Alert archive / Oklahoma / Excessive Heat Warnings in 2015

Excessive Heat Warning 4, NWS Tulsa, OK

August 7, 201519 counties in Oklahoma

NWS Tulsa, OK issued this excessive heat warning at Aug 7, 2015, 2:13 AM CDT for 19 counties in Oklahoma. It took effect at Aug 7, 2015, 1:00 PM CDT. It was in force for 7 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 7, 2015, 2:13 AM CDT (07:13 UTC)
In effect from: Aug 7, 2015, 1:00 PM CDT
Expired: Aug 7, 2015, 8:00 PM CDT
In force: 7 hr
Issued by: NWS Tulsa, OK

Counties Cherokee County, OK, Choctaw County, OK, Craig County, OK, Creek County, OK, Haskell County, OK, Latimer County, OK, Mayes County, OK, McIntosh County, OK, Muskogee County, OK, Nowata County, OK, Okfuskee County, OK, Okmulgee County, OK, Pawnee County, OK, Pittsburg County, OK, Pushmataha County, OK, Rogers County, OK, Tulsa County, OK, Wagoner County, OK, Washington County, OK

The radar

The Tulsa radar (KINX), 51 km from the middle of the area, began a volume at 07:16 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

Springfield, MO (KSGF), launched 00:00Z, 7.2 hours before the alert went out and 212 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: 1150 J/kg
Mixed-layer CIN: -219 J/kg
Mixed-layer LCL: 1190 m above ground
0-6 km bulk shear: 48 kt
0-1 km storm-relative helicity: 5 m²/s²
0-3 km storm-relative helicity: 116 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

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 Tulsa, OK wrote its last area forecast discussion before this excessive heat warning went out at Aug 6, 11:46 PM CDT, 2 hours 27 minutes earlier.

Area forecast discussion, Aug 6, 11:46 PM CDT, 2 hours 27 minutes before

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Hazardous weather outlook, Aug 6, 5:19 PM CDT, 8 hours 54 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 7, 2:13 AM CDT	Heat Advisory	TSA	Adair, Delaware, Ottawa	18 hr
Aug 7, 1:29 PM CDT	Excessive Heat Warning	TSA	Cherokee, Choctaw, Craig, Creek, Haskell, Latimer and 13 more	31 hr
Aug 7, 1:29 PM CDT	Heat Advisory	TSA	Adair, Delaware, Ottawa	31 hr

Nearby

Excessive Heat Warnings in Oklahoma, 2015 Excessive Heat Warnings in Arkansas, 2015 Every excessive heat 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.