Alert archive / West Virginia / River Flood Warnings in 2018

River Flood Warning 4, NWS Baltimore/Washington

April 16, 2018Berkeley County, Jefferson County, West Virginia

NWS Baltimore/Washington issued this river flood warning at Apr 16, 2018, 10:08 AM EDT for Berkeley County, Jefferson County, West Virginia. It took effect at Apr 16, 2018, 3:22 PM EDT. It was in force for 13 hr.

The area

The counties it named.

The facts

Issued: Apr 16, 2018, 10:08 AM EDT (14:08 UTC)
In effect from: Apr 16, 2018, 3:22 PM EDT
Expired: Apr 17, 2018, 4:13 AM EDT
In force: 13 hr
Issued by: NWS Baltimore/Washington
Area: Storm-based polygon
Flood severity: Minor

Counties Berkeley County, WV, Jefferson County, WV

The radar

The Sterling radar (KLWX), 60 km from the middle of the area, began a volume at 14:11 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 river

Written for the forecast point Opequon Creek near Martinsburg (MBGW2).

Action stage: 9 ft
Minor stage: 10 ft
Moderate stage: 12.5 ft
Major stage: 15 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 01616500, one reading an hour, from a day before the product to a day after it ended. Flood stages are today's.

What forecasters said that day

The local office's own words before this river flood 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 river flood warning went out at Apr 16, 4:15 AM EDT, 5 hours 53 minutes earlier.

Area forecast discussion, Apr 16, 4:15 AM EDT, 5 hours 53 minutes before

Area Forecast Discussion
National Weather Service Baltimore MD/Washington DC
415 AM EDT Mon Apr 16 2018

.SYNOPSIS...A strong cold front will cross the area later this
morning. Weak high pressure will gradually build back in for
Tuesday and Wednesday before another low pressure system crosses
the region Thursday. High pressure builds again over the region
for the latter part of the week.

&&

.NEAR TERM /THROUGH TONIGHT/...

Rain/showers with embedded t-storms will be moving east of the
area by 12Z this morning if not a little sooner with frontal
passage. Cloudy and breezy today with still a risk of a shower
due to wrap around moisture and weak instability as upper
low/cold pool aloft approaches from the west. Over the
Appalachians, there will be upslope precipitation with wet snow
showers, but with little accumulation during the daytime hours
due to temperatures in the mid 30s. Best chance of snow
accumulation will occur during the evening hours before upper
trof axis moves across. We'll be issuing a freeze watch for
several counties on the I-81 corridor where freezing
temperatures are expected and the growing season has started.

&&

.SHORT TERM /TUESDAY THROUGH WEDNESDAY/...

Quite cool and breezy especially for mid April as area remains
under cyclonic flow aloft associated with low pressure over
the St. Lawrence river. Dry conditions expected except for some
upslope precipitation over the Appalachians.

&&

.LONG TERM /WEDNESDAY NIGHT THROUGH SUNDAY/...

Next frontal passage is expected Thursday with a chance of
showers. Precip will be significantly less with this system due
drier westerly sfc wind trajectories and not enough moisture
return. Quiet weather expected for the latter part of the week
as high pressure builds in.

&&

.AVIATION /08Z MONDAY THROUGH FRIDAY/...

IFR conditions in rain expected through 12Z today, then
conditions improving rapidly to MVFR/VFR. Still bkn cigs 030-040
and breezy.

Frontal passage expected Thu with sct showers.

&&

.MARINE...Gale warning through 12Z today, then SCA through the
first half of the week as pres gradient remains tight.

&&

.HYDROLOGY...Flash flood warning in effect for the Cameron run
in Alexandria and Fairfax county where river gauge indicated the
creek had risen above flood stage. A flood warning is also in
effect for the South Branch Potomac River in Franklin, WV.

&&

.TIDES/COASTAL FLOODING...Minor coastal flooding is expected at
most sites, perhaps even moderate flooding at Annapolis and
Straits Point. We'll reevaluate situation later this morning and
upgrade to a warning if necessary.

&&

.LWX WATCHES/WARNINGS/ADVISORIES...
DC...None.
MD...Coastal Flood Advisory until 11 PM EDT this evening for MDZ014.
     Coastal Flood Advisory until 5 AM EDT Tuesday for MDZ016.
     Coastal Flood Advisory until 10 PM EDT this evening for MDZ011.
     Coastal Flood Advisory until 7 AM EDT Tuesday for MDZ017.
VA...Coastal Flood Advisory until 5 AM EDT Tuesday for VAZ057.
WV...None.
MARINE...Small Craft Advisory from 8 AM this morning to 6 PM EDT this
     evening for ANZ530>543.
     Gale Warning until 8 AM EDT this morning for ANZ530>543.

&&

SYNOPSIS...LFR
NEAR TERM...LFR
SHORT TERM...LFR
LONG TERM...RCM
AVIATION...RCM/LFR
MARINE...RCM/LFR
HYDROLOGY...LFR
TIDES/COASTAL FLOODING...LFR

Hazardous weather outlook, Apr 16, 8:12 AM EDT, 1 hour 56 minutes before

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In the hours before

Local storm report, Apr 16, 8:51 AM EDT, 1 hour 17 minutes before

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Local storm report, Apr 16, 8:57 AM EDT, 1 hour 11 minutes before

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Local storm report, Apr 16, 9:03 AM EDT, 1 hour 5 minutes before

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Local storm report, Apr 16, 9:05 AM EDT, 1 hour 3 minutes before

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Local storm report, Apr 16, 9:22 AM EDT, 46 minutes before

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Local storm report, Apr 16, 9:34 AM EDT, 34 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
Apr 15, 8:05 PM EDT	Tornado Warning	LWX	Augusta, City of Staunton, City of Waynesboro	13 min
Apr 15, 8:33 PM EDT	Severe Thunderstorm Warning	LWX	Albemarle, Culpeper, Madison, Orange, Spotsylvania	42 min
Apr 16, 1:38 AM EDT	Small Craft Advisory	LWX		52 hr
Apr 16, 2:12 AM EDT	Severe Thunderstorm Warning	LWX	King George	17 min
Apr 16, 2:13 AM EDT	Special Marine Warning	LWX		8 min
Apr 16, 2:33 AM EDT	Special Marine Warning	LWX		12 min
Apr 16, 3:01 AM EDT	Coastal Flood Advisory	LWX	Arlington, King George, City of Alexandria, City of Falls Church	23 hr
Apr 16, 3:34 AM EDT	Flash Flood Warning	LWX	Arlington, Fairfax, City of Alexandria, City of Fairfax, City of Falls Church	2 hr
Apr 16, 4:13 AM EDT	Flash Flood Warning	LWX	Rockingham, Shenandoah	85 min
Apr 16, 4:29 AM EDT	Freeze Watch	LWX	Albemarle, Amherst, Augusta, Clarke, Frederick, Greene and 12 more	12 hr
Apr 16, 5:37 AM EDT	Areal Flood Warning	LWX	Rockingham, Shenandoah	13 hr
Apr 16, 5:39 AM EDT	Areal Flood Warning	LWX	Arlington, Fairfax, City of Alexandria, City of Fairfax, City of Falls Church	6 hr
Apr 16, 6:19 AM EDT	Areal Flood Warning	LWX	Prince William	4 hr
Apr 16, 9:08 AM EDT	Areal Flood Warning	LWX	Prince William, City of Manassas	7 hr
Apr 16, 4:19 PM EDT	Areal Flood Warning	LWX	Prince William, City of Manassas	4 hr
Apr 16, 4:25 PM EDT	Freeze Warning	LWX	Albemarle, Amherst, Augusta, Clarke, Frederick, Greene and 12 more	15 hr
Apr 15, 11:31 PM EDT	Coastal Flood Advisory	LWX	Anne Arundel, Baltimore, Saint Mary's, City of Baltimore	4 hr
Apr 16, 2:34 AM EDT	Severe Thunderstorm Warning	LWX	Calvert, Charles, Saint Mary's	26 min
Apr 16, 2:37 AM EDT	Tornado Warning	LWX	Saint Mary's	23 min
Apr 16, 2:41 AM EDT	Severe Thunderstorm Warning	LWX	Anne Arundel, Howard, Montgomery, Prince George's	16 min
Apr 16, 4:37 AM EDT	Flash Flood Warning	LWX	Montgomery	2 hr
Apr 16, 6:20 AM EDT	Areal Flood Warning	LWX	Anne Arundel, Baltimore, Carroll, Harford, Howard, Prince George's and 1 more	6 hr
Apr 16, 6:38 AM EDT	Areal Flood Warning	LWX	Montgomery	6 hr
Apr 16, 7:34 AM EDT	Coastal Flood Warning	LWX	Anne Arundel	3 hr
Apr 16, 7:34 AM EDT	Coastal Flood Advisory	LWX	Anne Arundel	8 hr
Apr 16, 12:42 PM EDT	Areal Flood Warning	LWX	Montgomery	105 min
Apr 16, 1:09 PM EDT	Coastal Flood Warning	LWX	Anne Arundel, Saint Mary's	6 hr
Apr 16, 1:09 PM EDT	Coastal Flood Advisory	LWX	Saint Mary's	17 hr
Apr 16, 1:17 AM EDT	River Flood Warning	LWX	Pendleton	13 hr
Apr 16, 10:07 AM EDT	River Flood Warning	LWX	Hampshire, Hardy	28 hr

Nearby

River Flood Warnings in West Virginia, 2018 Every river flood warning in 2018

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; the gauge from the NWS water service and the USGS.