Alert archive / Virginia / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 171, NWS Baltimore/Washington

July 24, 20175 counties in Virginia; Montgomery County, Maryland

NWS Baltimore/Washington issued this severe thunderstorm warning at Jul 24, 2017, 5:02 PM EDT for 5 counties in Virginia; Montgomery County, Maryland. It was in force for 43 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: Jul 24, 2017, 5:02 PM EDT (21:02 UTC)
Expired: Jul 24, 2017, 5:45 PM EDT
In force: 43 min
Issued by: NWS Baltimore/Washington
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Montgomery County, MD, Arlington County, VA, City of Alexandria, VA, City of Fairfax, VA, City of Falls Church, VA, Fairfax County, VA

The radar

The Sterling radar (KLWX), 28 km from the middle of the area, began a volume at 21:04 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.

What forecasters said that day

The local office's own words before this severe thunderstorm 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 severe thunderstorm warning went out at Jul 24, 2:44 PM EDT, 2 hours 18 minutes earlier.

Area forecast discussion, Jul 24, 2:44 PM EDT, 2 hours 18 minutes before

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Hazardous weather outlook, Jul 24, 5:15 AM EDT, 11 hours 47 minutes before

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In the hours before

Local storm report, Jul 24, 2:54 PM EDT, 2 hours 8 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 23, 9:14 PM EDT	Small Craft Advisory	LWX		12 hr
Jul 23, 11:25 PM EDT	Special Marine Warning	LWX		2 hr
Jul 23, 11:39 PM EDT	Areal Flood Warning	LWX	Arlington, Fairfax	6 hr
Jul 24, 12:04 AM EDT	Special Marine Warning	LWX		116 min
Jul 24, 1:16 AM EDT	Special Marine Warning	LWX		89 min
Jul 24, 1:23 AM EDT	Special Marine Warning	LWX		2 hr
Jul 24, 1:30 AM EDT	Special Marine Warning	LWX		2 hr
Jul 24, 9:03 AM EDT	Small Craft Advisory	LWX		3 hr
Jul 24, 4:56 PM EDT	Special Marine Warning	LWX		64 min
Jul 24, 7:13 PM EDT	Special Marine Warning	LWX		2 hr
Jul 24, 12:21 AM EDT	Severe Thunderstorm Warning	LWX	Anne Arundel, Prince George's	39 min
Jul 24, 12:51 AM EDT	Areal Flood Warning	LWX	Baltimore, Harford	6 hr
Jul 24, 12:58 AM EDT	Severe Thunderstorm Warning	LWX	Anne Arundel	32 min
Jul 24, 4:27 AM EDT	Coastal Flood Advisory	LWX	Anne Arundel	6 hr
Jul 24, 7:27 PM EDT	Severe Thunderstorm Warning	LWX	Baltimore, Harford	48 min

Nearby

Severe Thunderstorm Warnings in Virginia, 2017 Severe Thunderstorm Warnings in Maryland, 2017 Every severe thunderstorm warning in 2017

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive.