Alert archive / Virginia / Freeze Warnings in 2016
Freeze Warning 4, NWS Baltimore/Washington
NWS Baltimore/Washington issued this freeze warning at Apr 8, 2016, 4:08 AM EDT for 23 counties in Virginia; 7 counties in Maryland; Berkeley County, Jefferson County, Morgan County, West Virginia. It took effect at Apr 9, 2016, 12:00 AM EDT. It was in force for 4 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
- Apr 8, 2016, 4:08 AM EDT (08:08 UTC)
- In effect from
- Apr 9, 2016, 12:00 AM EDT
- Expired
- Apr 9, 2016, 4:11 AM EDT
- In force
- 4 hr
- Issued by
- NWS Baltimore/Washington
All 33 counties
Baltimore County, MD, Carroll County, MD, Frederick County, MD, Harford County, MD, Howard County, MD, Montgomery County, MD, Washington County, MD, Albemarle County, VA, Amherst County, VA, Augusta County, VA, City of Charlottesville, VA, City of Harrisonburg, VA, City of Staunton, VA, City of Waynesboro, VA, City of Winchester, VA, Clarke County, VA, Culpeper County, VA, Fauquier County, VA, Frederick County, VA, Greene County, VA, Loudoun County, VA, Madison County, VA, Nelson County, VA, Orange County, VA, Page County, VA, Rappahannock County, VA, Rockbridge County, VA, Rockingham County, VA, Shenandoah County, VA, Warren County, VA, Berkeley County, WV, Jefferson County, WV, Morgan County, WV
The radar
The Sterling radar (KLWX), 62 km from the middle of the area, began a volume at 08:06 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, 8.1 hours before the alert went out and 209 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
- 29 J/kg
- Mixed-layer CIN
- -25 J/kg
- Mixed-layer LCL
- 1675 m above ground
- 0-6 km bulk shear
- 73 kt
- 0-1 km storm-relative helicity
- 107 m²/s²
- 0-3 km storm-relative helicity
- 230 m²/s²
- Significant tornado parameter
- -0.0
- Supercell composite
- -0.1
What forecasters said that day
The local office's own words before this freeze 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 freeze warning went out at Apr 8, 4:01 AM EDT, 7 minutes earlier.
Area forecast discussion, Apr 8, 4:01 AM EDT, 7 minutes before
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Local storm report, Apr 7, 10:13 PM EDT, 5 hours 55 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 |
|---|---|---|---|---|
| Apr 8, 4:06 AM EDT | Winter Weather Advisory | LWX | Highland | 34 hr |
| Apr 8, 4:08 AM EDT | Freeze Watch | LWX | Albemarle, Amherst, Arlington, Augusta, Clarke, Culpeper and 26 more | 23 hr |
| Apr 8, 4:23 AM EDT | Gale Warning | LWX | 44 hr |
Nearby
Freeze Warnings in Virginia, 2016Freeze Warnings in Maryland, 2016Freeze Warnings in West Virginia, 2016Every freeze warning 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.