Alert archive / Virginia / Special Weather Statements in 2020

Special Weather Statement, NWS Blacksburg, VA

July 10, 2020City of Lynchburg, Virginia

NWS Blacksburg, VA issued this special weather statement at Jul 10, 2020, 8:12 PM EDT for City of Lynchburg, Virginia. It was in force for 48 min. 3 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Jul 10, 2020, 8:12 PM EDT (00:12 UTC)
Expired
Jul 10, 2020, 9:00 PM EDT
In force
48 min
Issued by
NWS Blacksburg, VA

County City of Lynchburg, VA

The radar

The Roanoke radar (KFCX), 117 km from the middle of the area, began a volume at 00:14 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.

What was reported inside it

TimeReportWhereRemark
Jul 10, 8:16 PM EDTTSTM WND DMG2 Sw Lynchburg City, VATREE DOWN BLOCKING ONE LANE OF COLLEGE STREET. TIME ESTIMATED FROM RADAR.
Jul 10, 8:17 PM EDTTSTM WND DMGLynchburg City, VALARGE TREE DOWN ON VEHICLE AT THE INTERSECTION OF 3RD STREET AND HARRISON STREET.
Jul 10, 8:20 PM EDTTSTM WND DMG1 W Lynchburg City, VACAROLINE STREET BLOCKED BY TREE. TIME ESTIMATED FROM RADAR.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Roanoke, VA (KRNK), launched 00:00Z, 0.2 hours before the alert went out and 48 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-pSkew-T log-p diagram, Roanoke, VA at 00:00Z on 2020-07-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 428 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Roanoke, VA at 00:00Z on 2020-07-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 17 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
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
428 J/kg
Mixed-layer CIN
-71 J/kg
Mixed-layer LCL
995 m above ground
0-6 km bulk shear
13 kt
0-1 km storm-relative helicity
17 m²/s²
0-3 km storm-relative helicity
60 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

547 
WWUS81 KRNK 110012
SPSRNK

Special Weather Statement
National Weather Service BLACKSBURG VA
812 PM EDT Fri Jul 10 2020

VAZ035-045-046-110100-
Amherst-Campbell-Appomattox-
812 PM EDT Fri Jul 10 2020

...A STRONG THUNDERSTORM WILL AFFECT 
NORTHWESTERN APPOMATTOX...NORTH CENTRAL CAMPBELL...AND SOUTHEASTERN
AMHERST COUNTIES AND THE CITY OF LYNCHBURG...

At 811 PM EDT, a strong thunderstorm was located near Madison
Heights, or near Lynchburg, moving northeast at 20 mph.

Wind gusts up to 50 mph and nickel size hail are possible with this
storm.

Locations impacted include...
Lynchburg...
Amherst...
Bent Creek...
Madison Heights...
Stonewall...
Bocock...
and Tower Hill.

Torrential rainfall is also occurring with this storm, and may cause
localized flooding. Do not drive your vehicle through flooded
roadways.

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

LAT...LON 3730 7914 3745 7927 3745 7925 3747 7921
      3747 7918 3748 7921 3751 7922 3751 7924
      3749 7926 3751 7926 3766 7896 3754 7890
      3755 7888 3754 7883 3755 7882 3747 7872
TIME...MOT...LOC 0011Z 235DEG 17KT 3744 7908 

$$

BMG

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 10, 8:15 PM EDTSevere Thunderstorm WarningRNKAmherst, Appomattox, Bedford, Campbell, City of Lynchburg60 min
Jul 10, 8:27 PM EDTSevere Thunderstorm WarningRNKHalifax, Pittsylvania, City of Danville63 min
Jul 10, 8:52 PM EDTSpecial Weather StatementRNKAppomattox, Campbell53 min
Jul 10, 9:35 PM EDTSpecial Weather StatementRNKCharlotte55 min

Nearby

Special Weather Statements in Virginia, 2020Every special weather statement 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.