Alert archive / West Virginia / Special Weather Statements in 2017

Special Weather Statement, NWS Charleston, WV

July 28, 2017Taylor County, West Virginia

NWS Charleston, WV issued this special weather statement at Jul 28, 2017, 11:41 PM EDT for Taylor County, West Virginia. It was in force for 34 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jul 28, 2017, 11:41 PM EDT (03:41 UTC)
Expired: Jul 29, 2017, 12:15 AM EDT
In force: 34 min
Issued by: NWS Charleston, WV

County Taylor County, WV

The radar

The Pittsburgh radar (KPBZ), 127 km from the middle of the area, began a volume at 03:41 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 00:00Z, 3.7 hours before the alert went out and 114 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: 732 J/kg
Mixed-layer CIN: -3 J/kg
Mixed-layer LCL: 801 m above ground
0-6 km bulk shear: 47 kt
0-1 km storm-relative helicity: -24 m²/s²
0-3 km storm-relative helicity: 28 m²/s²
Significant tornado parameter: -0.1
Supercell composite: -0.5

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at Jul 28, 8:30 PM EDT, 3 hours 11 minutes earlier.

Area forecast discussion, Jul 28, 8:30 PM EDT, 3 hours 11 minutes before

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Hazardous weather outlook, Jul 28, 8:08 PM EDT, 3 hours 33 minutes before

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In the hours before

Special weather statement, Jul 28, 11:41 PM EDT, 0 minutes before

Special Weather Statement
National Weather Service Charleston WV
1141 PM EDT FRI JUL 28 2017

WVZ031-032-040-290415-
Barbour-Harrison-Taylor-
1141 PM EDT FRI JUL 28 2017

...A SHOWER WILL AFFECT WESTERN TAYLOR...NORTHWESTERN BARBOUR AND
NORTHEASTERN HARRISON COUNTIES...

At 1140 PM EDT, a torrential rain shower was located over
Lumberport, or 7 miles north of Clarksburg, moving southeast at 15
mph.

Locations impacted include...
Clarksburg, Grafton, Bridgeport, Shinnston, Lumberport, Anmoore,
Enterprise, Flemington, Valley Falls, Rosemont, Meadland, McGee,
Galloway, Meadowbrook and Despard.

THIS INCLUDES THE FOLLOWING HIGHWAYS...
 Interstate 79 between mile markers 119 and 128.
 Route 50 in West Virginia near mile marker 82.

Torrential rainfall is occurring with this shower, and may cause
minor localized flooding and ponding on roads. Do not drive your
vehicle through flooded roadways.

LAT...LON 3943 8028 3939 8020 3940 8012 3941 8011
      3939 8009 3940 8004 3938 7999 3918 8015
      3938 8045 3945 8040
TIME...MOT...LOC 0340Z 310DEG 15KT 3939 8037

Kistner

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 28, 8:05 PM EDT	Flash Flood Watch	RLX	Barbour, Doddridge, Harrison, Lewis, Pocahontas, Randolph and 4 more	12 hr
Jul 29, 12:23 AM EDT	Flash Flood Warning	RLX	Harrison	6 hr
Jul 29, 1:23 AM EDT	Flash Flood Warning	RLX	Doddridge, Harrison	4 hr
Jul 29, 3:09 AM EDT	Flash Flood Warning	RLX	Harrison, Lewis	3 hr
Jul 29, 5:21 AM EDT	Special Weather Statement	RLX	Barbour, Taylor	54 min
Jul 29, 6:03 AM EDT	Areal Flood Warning	RLX	Harrison	15 hr
Jul 29, 6:32 AM EDT	Areal Flood Warning	RLX	Barbour, Randolph, Taylor	3 hr

Nearby

Special Weather Statements in West Virginia, 2017 Every special weather statement in 2017

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.