Alert archive / Virginia / Flood Watches in 2014

Flood Watch 1, NWS Blacksburg, VA

February 2, 20144 counties in Virginia; Mercer County, Monroe County, Summers County, West Virginia

NWS Blacksburg, VA issued this flood watch at Feb 2, 2014, 9:10 PM EST for 4 counties in Virginia; Mercer County, Monroe County, Summers County, West Virginia. It took effect at Feb 3, 2014, 12:00 AM EST. It was in force for 12 hr.

The area

The counties it named.

The facts

Issued: Feb 2, 2014, 9:10 PM EST (02:10 UTC)
In effect from: Feb 3, 2014, 12:00 AM EST
Expired: Feb 3, 2014, 11:38 AM EST
In force: 12 hr
Issued by: NWS Blacksburg, VA
Flood severity: None

Counties Alleghany County, VA, Bath County, VA, City of Covington, VA, Tazewell County, VA, Mercer County, WV, Monroe County, WV, Summers County, WV

The radar

The Roanoke radar (KFCX), 71 km from the middle of the area, began a volume at 02:08 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

Roanoke, VA (KRNK), launched 00:00Z, 2.2 hours before the alert went out and 104 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 803 m above ground
0-6 km bulk shear: 77 kt
0-1 km storm-relative helicity: 52 m²/s²
0-3 km storm-relative helicity: 177 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 flood watch went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Blacksburg, VA wrote its last area forecast discussion before this flood watch went out at Feb 2, 6:59 PM EST, 2 hours 11 minutes earlier.

Area forecast discussion, Feb 2, 6:59 PM EST, 2 hours 11 minutes before

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Hazardous weather outlook, Feb 2, 3:41 PM EST, 5 hours 29 minutes before

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The office that day

Everything else NWS Blacksburg, VA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Feb 3, 3:40 PM EST	Flood Watch	RNK	Alleghany, Bath, Tazewell, City of Covington	38 hr
Feb 3, 9:27 AM EST	Areal Flood Advisory	RNK	Greenbrier	6 hr
Feb 3, 2:23 PM EST	Areal Flood Advisory	RNK	Mercer	6 hr

Nearby

Flood Watches in Virginia, 2014 Flood Watches in West Virginia, 2014 Every flood watch in 2014

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.