Alert archive / Virginia / Tornado Warnings in 2019

Tornado Warning 36, NWS Baltimore/Washington

October 31, 2019Greene County, Madison County, Orange County, Virginia

NWS Baltimore/Washington issued this tornado warning at Oct 31, 2019, 7:04 PM EDT for Greene County, Madison County, Orange County, Virginia. It was in force for 26 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Oct 31, 2019, 7:04 PM EDT (23:04 UTC)
Expired
Oct 31, 2019, 7:30 PM EDT
In force
26 min
Issued by
NWS Baltimore/Washington
Area
Storm-based polygon
Tornado
Radar indicated
Hail
0.75 in

Counties Greene County, VA, Madison County, VA, Orange County, VA

The radar

The Sterling radar (KLWX), 99 km from the middle of the area, began a volume at 23:04 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Oct 31, 2:56 PM EDTTornado WatchSPC10 hr

The nearest sounding before it

Washington/Dulle, VA (KIAD), launched 12:00Z, 11.1 hours before the alert went out and 102 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, Washington/Dulle, VA at 12:00Z on 2019-10-31Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Washington/Dulle, VA at 12:00Z on 2019-10-31The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 280 square meters per square second.19395878Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
489 m above ground
0-6 km bulk shear
43 kt
0-1 km storm-relative helicity
280 m²/s²
0-3 km storm-relative helicity
246 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The office that day

Everything else NWS Baltimore/Washington issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Oct 31, 3:48 AM EDTWind AdvisoryLWXAlbemarle, Amherst, Arlington, Augusta, Clarke, Fairfax and 19 more24 hr
Oct 31, 1:58 PM EDTCoastal Flood WarningLWXArlington, City of Alexandria, City of Falls Church12 hr
Oct 31, 1:58 PM EDTCoastal Flood AdvisoryLWXArlington, King George, City of Alexandria, City of Falls Church15 hr
Oct 31, 4:41 PM EDTSevere Thunderstorm WarningLWXHighland49 min
Oct 31, 4:56 PM EDTSevere Thunderstorm WarningLWXFrederick49 min
Oct 31, 5:45 PM EDTSevere Thunderstorm WarningLWXFrederick45 min
Oct 31, 6:46 PM EDTSevere Thunderstorm WarningLWXClarke, Frederick, City of Winchester44 min
Oct 31, 6:59 PM EDTSmall Craft AdvisoryLWX23 hr
Oct 31, 7:19 PM EDTSevere Thunderstorm WarningLWXCulpeper, Fauquier, Madison, Rappahannock26 min
Oct 31, 7:24 PM EDTSevere Thunderstorm WarningLWXLoudoun51 min
Oct 31, 5:05 PM EDTTornado WarningLWXAllegany, Washington25 min
Oct 31, 4:10 PM EDTSevere Thunderstorm WarningLWXGrant, Hampshire, Hardy, Mineral50 min

Nearby

Tornado Warnings in Virginia, 2019Every tornado warning in 2019Tornadoes in 2019

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.