Alert archive / Virginia / Winter Storm Warnings in 2015
Winter Storm Warning 1, NWS Baltimore/Washington
NWS Baltimore/Washington issued this winter storm warning at Jan 6, 2015, 7:01 AM EST for 8 counties in Virginia; Montgomery County, Maryland; Grant County, Mineral County, Pendleton County, West Virginia. It was in force for 12 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
- Jan 6, 2015, 7:01 AM EST (12:01 UTC)
- Expired
- Jan 6, 2015, 7:00 PM EST
- In force
- 12 hr
- Issued by
- NWS Baltimore/Washington
Counties Montgomery County, MD, Arlington County, VA, City of Alexandria, VA, City of Fairfax, VA, City of Falls Church, VA, Fairfax County, VA, Fauquier County, VA, Loudoun County, VA, Warren County, VA, Grant County, WV, Mineral County, WV, Pendleton County, WV
The radar
The Sterling radar (KLWX), 32 km from the middle of the area, began a volume at 12:03 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
Washington/Dulle, VA (KIAD), launched 12:00Z, 0.0 hours before the alert went out and 39 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.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 756 m above ground
- 0-6 km bulk shear
- 121 kt
- 0-1 km storm-relative helicity
- 334 m²/s²
- 0-3 km storm-relative helicity
- 426 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this winter storm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Baltimore/Washington wrote its last area forecast discussion before this winter storm warning went out at Jan 6, 3:37 AM EST, 3 hours 24 minutes earlier.
Area forecast discussion, Jan 6, 3:37 AM EST, 3 hours 24 minutes before
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</html>Hazardous weather outlook, Jan 6, 5:33 AM EST, 1 hour 28 minutes before
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</html>The office that day
Everything else NWS Baltimore/Washington issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 5, 9:17 PM EST | Small Craft Advisory | LWX | 33 hr | |
| Jan 6, 3:31 AM EST | Gale Warning | LWX | 48 hr | |
| Jan 6, 2:00 PM EST | Small Craft Advisory | LWX | 12 hr | |
| Jan 6, 2:58 PM EST | Wind Chill Advisory | LWX | Albemarle, Amherst, Arlington, Augusta, Clarke, Culpeper and 27 more | 50 hr |
Nearby
Winter Storm Warnings in Virginia, 2015Winter Storm Warnings in West Virginia, 2015Winter Storm Warnings in Maryland, 2015Every winter storm 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.