Alert archive / Virginia / Flash Flood Watches in 2017

Flash Flood Watch 4, NWS Baltimore/Washington

July 6, 201723 counties in Virginia; 14 counties in Maryland; 7 counties in West Virginia

NWS Baltimore/Washington issued this flash flood watch at Jul 6, 2017, 6:20 AM EDT for 23 counties in Virginia; 14 counties in Maryland; 7 counties in West Virginia. It was in force for 20 hr.

The area

The counties it named.

The facts

Issued: Jul 6, 2017, 6:20 AM EDT (10:20 UTC)
Expired: Jul 7, 2017, 1:57 AM EDT
In force: 20 hr
Issued by: NWS Baltimore/Washington
Flood severity: None

All 44 counties

Allegany County, MD, Anne Arundel County, MD, Baltimore County, MD, Calvert County, MD, Carroll County, MD, Charles County, MD, City of Baltimore, MD, Frederick County, MD, Harford County, MD, Howard County, MD, Montgomery County, MD, Prince George's County, MD, Saint Mary's County, MD, Washington County, MD, Arlington County, VA, City of Alexandria, VA, City of Fairfax, VA, City of Falls Church, VA, City of Fredericksburg, VA, City of Winchester, VA, Clarke County, VA, Culpeper County, VA, Fairfax County, VA, Fauquier County, VA, Frederick County, VA, Greene County, VA, King George County, VA, Loudoun County, VA, Madison County, VA, Orange County, VA, Page County, VA, Rappahannock County, VA, Rockingham County, VA, Shenandoah County, VA, Spotsylvania County, VA, Stafford County, VA, Warren County, VA, Berkeley County, WV, Grant County, WV, Hampshire County, WV, Hardy County, WV, Jefferson County, WV, Mineral County, WV, Morgan County, WV

The radar

The Sterling radar (KLWX), 18 km from the middle of the area, began a volume at 10:20 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 flash flood watch 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 flash flood watch went out at Jul 6, 3:55 AM EDT, 2 hours 25 minutes earlier.

Area forecast discussion, Jul 6, 3:55 AM EDT, 2 hours 25 minutes before

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Hazardous weather outlook, Jul 6, 5:11 AM EDT, 1 hour 9 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 6, 5:45 AM EDT	Areal Flood Warning	LWX	Prince William, Stafford	6 hr
Jul 6, 9:57 AM EDT	Special Marine Warning	LWX		93 min
Jul 6, 10:07 AM EDT	Areal Flood Warning	LWX	Fairfax, Prince William, City of Fairfax, City of Manassas, City of Manassas Park	8 hr
Jul 6, 11:11 AM EDT	Special Marine Warning	LWX		94 min
Jul 6, 1:45 PM EDT	Small Craft Advisory	LWX		7 hr
Jul 6, 5:13 PM EDT	Special Marine Warning	LWX		92 min
Jul 6, 5:35 PM EDT	Severe Thunderstorm Warning	LWX	Culpeper, Madison, Rappahannock	40 min
Jul 6, 5:42 PM EDT	Tornado Warning	LWX	Madison	22 min
Jul 6, 6:00 PM EDT	Severe Thunderstorm Warning	LWX	Culpeper, Madison, Orange	45 min
Jul 6, 6:10 PM EDT	Areal Flood Warning	LWX	Prince William, City of Manassas	6 hr
Jul 6, 6:40 PM EDT	Tornado Warning	LWX	Orange, Spotsylvania	8 min
Jul 6, 6:47 PM EDT	Severe Thunderstorm Warning	LWX	Orange, Spotsylvania, City of Fredericksburg	43 min
Jul 6, 7:14 PM EDT	Severe Thunderstorm Warning	LWX	Spotsylvania	33 min
Jul 6, 7:20 PM EDT	Special Marine Warning	LWX		85 min
Jul 6, 7:43 PM EDT	Severe Thunderstorm Warning	LWX	King George	36 min
Jul 6, 8:03 AM EDT	Flash Flood Warning	LWX	Calvert, Charles, Saint Mary's	6 hr
Jul 6, 12:39 PM EDT	Coastal Flood Advisory	LWX	Saint Mary's	14 hr
Jul 6, 2:07 PM EDT	Areal Flood Warning	LWX	Saint Mary's	11 hr

Nearby

Flash Flood Watches in Virginia, 2017 Flash Flood Watches in Maryland, 2017 Flash Flood Watches in West Virginia, 2017 Every flash flood watch 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.