Alert archive / Virginia / Freeze Warnings in 2020

Freeze Warning 1, NWS Blacksburg, VA

April 10, 202021 counties in Virginia; 6 counties in North Carolina

NWS Blacksburg, VA issued this freeze warning at Apr 10, 2020, 2:31 PM EDT for 21 counties in Virginia; 6 counties in North Carolina. It took effect at Apr 11, 2020, 12:00 AM EDT. It was in force for 9 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 10, 2020, 2:31 PM EDT (18:31 UTC)
In effect from: Apr 11, 2020, 12:00 AM EDT
Expired: Apr 11, 2020, 9:00 AM EDT
In force: 9 hr
Issued by: NWS Blacksburg, VA

All 27 counties

Caswell County, NC, Rockingham County, NC, Stokes County, NC, Surry County, NC, Wilkes County, NC, Yadkin County, NC, Amherst County, VA, Appomattox County, VA, Bedford County, VA, Botetourt County, VA, Buckingham County, VA, Campbell County, VA, Charlotte County, VA, City of Buena Vista, VA, City of Danville, VA, City of Lexington, VA, City of Lynchburg, VA, City of Martinsville, VA, City of Roanoke, VA, City of Salem, VA, Franklin County, VA, Halifax County, VA, Henry County, VA, Patrick County, VA, Pittsylvania County, VA, Roanoke County, VA, Rockbridge County, VA

The radar

The Roanoke radar (KFCX), 55 km from the middle of the area, began a volume at 18:36 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

Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 6.5 hours before the alert went out and 106 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: 1628 m above ground
0-6 km bulk shear: 121 kt
0-1 km storm-relative helicity: -158 m²/s²
0-3 km storm-relative helicity: -68 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 freeze warning 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 freeze warning went out at Apr 10, 12:29 PM EDT, 2 hours 2 minutes earlier.

Area forecast discussion, Apr 10, 12:29 PM EDT, 2 hours 2 minutes before

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Hazardous weather outlook, Apr 10, 12:04 PM EDT, 2 hours 27 minutes before

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In the hours before

Local storm report, Apr 10, 8:39 AM EDT, 5 hours 52 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BLACKSBURG VA
839 AM EDT FRI APR 10 2020

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0319 PM     TSTM WND DMG     LINDSIDE                37.46N 80.67W
04/08/2020                   MONROE             WV   PUBLIC

            A STRONG THUNDERSTORMS MOVED SOUTHEAST
            ACROSS MONROE COUNTY, DAMAGING A SHED AND
            DOWNING TWO TREES IN LINDSIDE PER A REPORT
            VIA SOCIAL MEDIA.

&&

RR

Local storm report, Apr 10, 8:41 AM EDT, 5 hours 50 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BLACKSBURG VA
841 AM EDT FRI APR 10 2020

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0319 PM     HAIL             LINDSIDE                37.46N 80.67W
04/08/2020  E0.88 INCH       MONROE             WV   PUBLIC

            A STRONG THUNDERSTORM THAT MOVED SOUTHEAST
            THROUGH MONROE COUNTY PRODUCED NICKEL SIZE
            HAIL IN THE LINDSIDE AREA PER A REPORT VIA
            SOCIAL MEDIA.

&&

RR

Local storm report, Apr 10, 9:14 AM EDT, 5 hours 17 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BLACKSBURG VA
914 AM EDT FRI APR 10 2020

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0729 AM     SNOW             2 ESE BLUEFIELD         37.26N 81.19W
04/10/2020  M1.0 INCH        MERCER             WV   BROADCAST MEDIA

            REPORTED BY WVVA.

&&

Local storm report, Apr 10, 10:35 AM EDT, 3 hours 56 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BLACKSBURG VA
1035 AM EDT FRI APR 10 2020

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1000 AM     SNOW             2 NE CLIFFIELD          37.12N 81.64W
04/10/2020  E4.0 INCH        TAZEWELL           VA   PUBLIC

            UPSLOPE SNOW SHOWERS PRODUCED CONCENTRATED
            SNOWFALL ACROSS PARTS OF TAZEWELL CO.,
            RESULTING IN 4 INCHES OF SNOWFALL IN BAPTIST
            VALLEY PER A REPORT FROM THE PUBLIC.

&&

RR

Local storm report, Apr 10, 10:53 AM EDT, 3 hours 38 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BLACKSBURG VA
1053 AM EDT FRI APR 10 2020

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1053 AM     SNOW             TAZEWELL                37.12N 81.52W
04/10/2020  M3.0 INCH        TAZEWELL           VA   PUBLIC

&&

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 9, 9:27 PM EDT	Wind Advisory	RNK	Alleghany, Amherst, Bath, Bedford, Botetourt, Carroll and 18 more	21 hr
Apr 10, 1:32 AM EDT	Freeze Watch	RNK	Rockbridge, City of Buena Vista, City of Lexington	13 hr
Apr 10, 11:15 AM EDT	Red Flag Warning	RNK	Alleghany, Ashe, Caswell, Rockingham, Stokes, Surry and 3 more	7 hr

Nearby

Freeze Warnings in Virginia, 2020 Freeze Warnings in North Carolina, 2020 Every freeze warning in 2020

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.