Alert archive / West Virginia / Heat Advisories in 2016

Heat Advisory 4, NWS Charleston, WV

August 11, 201622 counties in West Virginia; 4 counties in Ohio; Boyd County, Lawrence County, Kentucky

NWS Charleston, WV issued this heat advisory at Aug 11, 2016, 10:02 AM EDT for 22 counties in West Virginia; 4 counties in Ohio; Boyd County, Lawrence County, Kentucky. It took effect at Aug 11, 2016, 1:00 PM EDT. It was in force for 7 hr.

The area

The counties it named.

The facts

Issued: Aug 11, 2016, 10:02 AM EDT (14:02 UTC)
In effect from: Aug 11, 2016, 1:00 PM EDT
Expired: Aug 11, 2016, 8:00 PM EDT
In force: 7 hr
Issued by: NWS Charleston, WV

All 28 counties

Boyd County, KY, Lawrence County, KY, Gallia County, OH, Lawrence County, OH, Meigs County, OH, Washington County, OH, Boone County, WV, Braxton County, WV, Cabell County, WV, Calhoun County, WV, Clay County, WV, Doddridge County, WV, Gilmer County, WV, Jackson County, WV, Kanawha County, WV, Lewis County, WV, Lincoln County, WV, Logan County, WV, Mason County, WV, Mingo County, WV, Pleasants County, WV, Putnam County, WV, Ritchie County, WV, Roane County, WV, Tyler County, WV, Wayne County, WV, Wirt County, WV, Wood County, WV

The radar

The Charleston,WV radar (KRLX), 43 km from the middle of the area, began a volume at 14:01 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

Cncnati-Daytn, OH (KILN), launched 12:00Z, 2.0 hours before the alert went out and 204 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: 862 J/kg
Mixed-layer CIN: -44 J/kg
Mixed-layer LCL: 1138 m above ground
0-6 km bulk shear: 11 kt
0-1 km storm-relative helicity: 52 m²/s²
0-3 km storm-relative helicity: 26 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 heat advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Charleston, WV wrote its last area forecast discussion before this heat advisory went out at Aug 11, 6:35 AM EDT, 3 hours 27 minutes earlier.

Area forecast discussion, Aug 11, 6:35 AM EDT, 3 hours 27 minutes before

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Hazardous weather outlook, Aug 11, 3:28 AM EDT, 6 hours 34 minutes before

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The office that day

Everything else NWS Charleston, WV issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 10, 8:53 PM EDT	Special Weather Statement	RLX	Barbour	52 min
Aug 10, 9:25 PM EDT	Special Weather Statement	RLX	Lewis	50 min
Aug 10, 9:44 PM EDT	Flash Flood Warning	RLX	Doddridge, Gilmer, Harrison, Lewis	3 hr
Aug 10, 10:07 PM EDT	Flash Flood Warning	RLX	Gilmer	113 min
Aug 10, 10:26 PM EDT	Special Weather Statement	RLX	Harrison	64 min
Aug 10, 10:30 PM EDT	Special Weather Statement	RLX	Ritchie	60 min

Nearby

Heat Advisories in West Virginia, 2016 Heat Advisories in Ohio, 2016 Heat Advisories in Kentucky, 2016 Every heat advisory 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.