Alert archive / Maryland / Tornado Warnings in 2019

Tornado Warning 35, NWS Baltimore/Washington

October 31, 2019Allegany County, Washington County, Maryland; Hampshire County, Morgan County, West Virginia

NWS Baltimore/Washington issued this tornado warning at Oct 31, 2019, 5:05 PM EDT for Allegany County, Washington County, Maryland; Hampshire County, Morgan County, West Virginia. It was in force for 25 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, 5:05 PM EDT (21:05 UTC)
Expired: Oct 31, 2019, 5:30 PM EDT
In force: 25 min
Issued by: NWS Baltimore/Washington
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.75 in

Counties Allegany County, MD, Washington County, MD, Hampshire County, WV, Morgan County, WV

The radar

The Sterling radar (KLWX), 96 km from the middle of the area, began a volume at 21:05 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.

Issued	Product	Office	Lasted
Oct 31, 2:56 PM EDT	Tornado Watch	SPC	10 hr

The nearest sounding before it

Washington/Dulle, VA (KIAD), launched 12:00Z, 9.1 hours before the alert went out and 104 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: 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.

Issued	Product	Office	Counties	Lasted
Oct 31, 3:48 AM EDT	Wind Advisory	LWX	Albemarle, Amherst, Arlington, Augusta, Clarke, Fairfax and 19 more	24 hr
Oct 31, 1:58 PM EDT	Coastal Flood Warning	LWX	Arlington, City of Alexandria, City of Falls Church	12 hr
Oct 31, 1:58 PM EDT	Coastal Flood Advisory	LWX	Arlington, King George, City of Alexandria, City of Falls Church	15 hr
Oct 31, 4:41 PM EDT	Severe Thunderstorm Warning	LWX	Highland	49 min
Oct 31, 4:56 PM EDT	Severe Thunderstorm Warning	LWX	Frederick	49 min
Oct 31, 5:45 PM EDT	Severe Thunderstorm Warning	LWX	Frederick	45 min
Oct 31, 6:46 PM EDT	Severe Thunderstorm Warning	LWX	Clarke, Frederick, City of Winchester	44 min
Oct 31, 6:59 PM EDT	Small Craft Advisory	LWX		23 hr
Oct 31, 7:04 PM EDT	Tornado Warning	LWX	Greene, Madison, Orange	26 min
Oct 31, 7:19 PM EDT	Severe Thunderstorm Warning	LWX	Culpeper, Fauquier, Madison, Rappahannock	26 min
Oct 31, 7:24 PM EDT	Severe Thunderstorm Warning	LWX	Loudoun	51 min
Oct 31, 4:10 PM EDT	Severe Thunderstorm Warning	LWX	Grant, Hampshire, Hardy, Mineral	50 min

Nearby

Tornado Warnings in Maryland, 2019 Tornado Warnings in West Virginia, 2019 Every tornado warning in 2019 Tornadoes 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.