Alert archive / West Virginia / Heat Advisories in 2018

Heat Advisory 4, NWS Charleston, WV

July 3, 201815 counties in West Virginia

NWS Charleston, WV issued this heat advisory at Jul 3, 2018, 1:56 PM EDT for 15 counties in West Virginia. It took effect at Jul 4, 2018, 12:00 PM EDT. It was in force for 8 hr.

The area

The counties it named.

The facts

Issued: Jul 3, 2018, 1:56 PM EDT (17:56 UTC)
In effect from: Jul 4, 2018, 12:00 PM EDT
Expired: Jul 4, 2018, 8:00 PM EDT
In force: 8 hr
Issued by: NWS Charleston, WV

Counties Boone County, WV, Braxton County, WV, Calhoun County, WV, Clay County, WV, Doddridge County, WV, Gilmer County, WV, Harrison County, WV, Lewis County, WV, Logan County, WV, Mingo County, WV, Pleasants County, WV, Ritchie County, WV, Roane County, WV, Tyler County, WV, Wirt County, WV

The radar

The Charleston,WV radar (KRLX), 74 km from the middle of the area, began a volume at 17:56 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

Pittsburgh, PA (KAGC), launched 12:00Z, 5.9 hours before the alert went out and 201 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: 105 J/kg
Mixed-layer CIN: -107 J/kg
Mixed-layer LCL: 951 m above ground
0-6 km bulk shear: 9 kt
0-1 km storm-relative helicity: 17 m²/s²
0-3 km storm-relative helicity: 12 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 Jul 3, 10:01 AM EDT, 3 hours 55 minutes earlier.

Area forecast discussion, Jul 3, 10:01 AM EDT, 3 hours 55 minutes before

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Hazardous weather outlook, Jul 3, 4:35 AM EDT, 9 hours 21 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
Jul 2, 8:08 PM EDT	Special Weather Statement	RLX	Clay, Kanawha	67 min
Jul 2, 9:32 PM EDT	Special Weather Statement	RLX	Jackson, Putnam	28 min
Jul 2, 9:51 PM EDT	Flash Flood Warning	RLX	Jackson, Kanawha, Lincoln, Putnam, Roane, Wirt	6 hr
Jul 2, 10:30 PM EDT	Special Weather Statement	RLX	Doddridge, Tyler	30 min
Jul 3, 4:15 AM EDT	Excessive Heat Watch	RLX	Cabell, Jackson, Kanawha, Lincoln, Mason, Putnam and 2 more	10 hr
Jul 3, 4:15 AM EDT	Heat Advisory	RLX	Boone, Cabell, Calhoun, Gilmer, Jackson, Kanawha and 13 more	16 hr
Jul 3, 1:56 PM EDT	Excessive Heat Warning	RLX	Cabell, Jackson, Kanawha, Lincoln, Mason, Putnam and 2 more	30 hr
Jul 3, 5:17 PM EDT	Special Weather Statement	RLX	Randolph	43 min
Jul 3, 5:54 PM EDT	Severe Thunderstorm Warning	RLX	Randolph, Upshur	36 min
Jul 3, 6:56 PM EDT	Special Weather Statement	RLX	Braxton, Gilmer	34 min

Nearby

Heat Advisories in West Virginia, 2018 Every heat advisory in 2018

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.