Alert archive / Virginia / Flash Flood Warnings in 2020

Flash Flood Warning 10, NWS Wakefield, VA

July 1, 2020City of Norfolk, City of Virginia Beach, Virginia

NWS Wakefield, VA issued this flash flood warning at Jul 1, 2020, 5:35 PM EDT for City of Norfolk, City of Virginia Beach, Virginia. It was in force for 2 hr. 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 1, 2020, 5:35 PM EDT (21:35 UTC)
Expired
Jul 1, 2020, 7:56 PM EDT
In force
2 hr
Issued by
NWS Wakefield, VA
Area
Storm-based polygon
Flood severity
None

Counties City of Norfolk, VA, City of Virginia Beach, VA

The radar

The Norfolk radar (KAKQ), 80 km from the middle of the area, began a volume at 21:38 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 nearest sounding before it

Wallops Is Stn, VA (KWAL), launched 12:00Z, 9.6 hours before the alert went out and 140 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, Wallops Is Stn, VA at 12:00Z on 2020-07-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 706 joules per kilogram.LCLLFCEL10008507005003002001001 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, Wallops Is Stn, VA at 12:00Z on 2020-07-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 29 square meters per square second.1939Sfc1 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
706 J/kg
Mixed-layer CIN
-57 J/kg
Mixed-layer LCL
1227 m above ground
0-6 km bulk shear
29 kt
0-1 km storm-relative helicity
29 m²/s²
0-3 km storm-relative helicity
42 m²/s²
Significant tornado parameter
0.1
Supercell composite
1.4

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Wakefield, VA wrote its last area forecast discussion before this flash flood warning went out at Jul 1, 4:12 PM EDT, 1 hour 23 minutes earlier.

Area forecast discussion, Jul 1, 4:12 PM EDT, 1 hour 23 minutes before
AREA FORECAST DISCUSSION
National Weather Service Wakefield VA
412 PM EDT Wed Jul 1 2020

.SYNOPSIS...
An upper level low over New England will start to move offshore
overnight, with surface high pressure building in from the
northwest for Thursday and Friday.

&&

.NEAR TERM /UNTIL 6 AM THURSDAY MORNING/...
As of 300 PM EDT Wednesday...

This afternoon there is an upper low over the northeast with the
trough axis roughly draped across the Mid Atlantic. At the surface,
there is high pressure over the great lakes and weak low pressure
over central NC. Scattered showers and thunderstorms have increased
in coverage as expected this afternoon. Continue to carry roughly 40-
50% chance across the area through 00Z, and then back off to slight
chance to chance from 00-06Z. MLCAPE values over 2000 J/kg and
sufficient mid level flow will allow some of the storms to be on the
stronger side. SPC continues to have a marginal risk for severe
weather today over most of the area. Damaging winds and large hail
are the primary threats. Low temps tonight in the mid to upper
60s.

&&

.SHORT TERM /6 AM THURSDAY MORNING THROUGH SATURDAY NIGHT/...
As of 300 PM EDT Wednesday...

The upper level low will move off the coast on Thursday, with the
trough axis moving east of our area. Surface high pressure over the
western Great Lakes will be in control, with N/NW flow aloft. To our
south, a stationary boundary will be positioned over the Carolina's
with weak low pressure off the NC coast. Most of the area will be
rain free with just a slight chance of an afternoon or early evening
shower/thunderstorm mainly over NE NC. High temps will be in the mid
to upper 80s.

High pressure will still be in control on Friday. Some weak energy
to the north may sneak an isolated shower or storm to the MD eastern
shore late in the day. Otherwise, the vast majority of the region
will be dry and hot, with high temps in the low to mid 90s. Rain
chances increase a bit on Saturday as a back door cold front sneaks
into the region from the north. Carrying just slight chance to
chance pops, mainly for the afternoon and early evening. High temps
on Saturday in the mid 80s across the eastern shore to lower 90s
inland. Low temps Friday and Saturday morning in the upper 60s to
lower 70s.

&&

.LONG TERM /SUNDAY THROUGH WEDNESDAY/...
As of 300 PM EDT Wednesday...

Much of the forecast late weekend into the first part of next week
will hinge on the development of a low over the FL panhandle that
will ride up the SE coast early in the week. While both the GFS and
the ECMWF keep the bulk of the moisture to the east of the center,
the resulting moist S/SE LL flow across our area will result in
daily shower/storm chances Sunday through mid week. Temperatures
remain seasonal with high temps each day in the upper 80s to lower
90s, and low temps in the upper 60s to lower 70s.

&&

.AVIATION /20Z WEDNESDAY THROUGH MONDAY/...
As of 110 PM EDT Wednesday...

Scattered showers and thunderstorms this afternoon and evening
will result in brief periods of flight restrictions when
convection is over or near the terminals. Winds outside of
convection are light and variable. Guidance is hinting at patchy
fog overnight but mainly west of RIC, so for now will leave any
mention of fog out. Mainly VFR on Thursday outside of a slight
chance of convection in the afternoon/early evening. Drier
conditions Friday, with VFR expected.

&&

.MARINE...
As of 415 PM EDT Wednesday...

Flow over the regions will be weak through Saturday. Winds will
be variable and less than 10 kt (outside of thunderstorms).
Thunderstorms are across the coastal waters this afternoon with
locally gusty winds. Thunderstorms are not expected from
Thursday to Sunday.

High pressure will build in from the northeast Saturday night.
Winds will become NE 10-15 kt Saturday night and Sunday.

Waves in bay the will remain around 1 ft and seas will be 1-3
ft through he forecast period.

&&

.AKQ WATCHES/WARNINGS/ADVISORIES...
MD...None.
NC...None.
VA...None.
MARINE...None.

&&

SYNOPSIS...CMF
NEAR TERM...CMF
SHORT TERM...CMF
LONG TERM...CMF
AVIATION...CMF
MARINE...CP
Hazardous weather outlook, Jul 1, 4:02 PM EDT, 1 hour 33 minutes before
Hazardous Weather Outlook
National Weather Service Wakefield VA
402 PM EDT Wed Jul 1 2020

MDZ021>025-NCZ012>017-030>032-102-VAZ048-060>062-064>069-075>090-092-
093-095>100-509>525-022015-
Dorchester-Wicomico-Somerset-Inland Worcester-Maryland Beaches-
Northampton-Hertford-Gates-Pasquotank-Camden-Western Currituck-
Bertie-Chowan-Perquimans-Eastern Currituck-Fluvanna-Prince Edward-
Cumberland-Goochland-Caroline-Mecklenburg-Lunenburg-Nottoway-Amelia-
Powhatan-Westmoreland-Richmond-Northumberland-Lancaster-Brunswick-
Dinwiddie-Prince George-Charles City-New Kent-Gloucester-Middlesex-
Mathews-Greensville-Sussex-Surry-James City-Southampton-
Isle of Wight-Norfolk/Portsmouth-Suffolk-Chesapeake-Virginia Beach-
Accomack-Western Louisa-Eastern Louisa-Western Hanover-
Eastern Hanover-Western Chesterfield-
Eastern Chesterfield (Including Col. Heights)-
Western Henrico (Including the City of Richmond)-Eastern Henrico-
Western King William-Eastern King William-Western King and Queen-
Eastern King and Queen-Western Essex-Eastern Essex-York-Newport News-
Hampton/Poquoson-
402 PM EDT Wed Jul 1 2020

This Hazardous Weather Outlook is for southeast Maryland, northeast
North Carolina, central Virginia, east central Virginia, eastern
Virginia, north central Virginia, south central Virginia and
southeast Virginia.

.DAY ONE...Tonight.

Scattered showers and thunderstorms expected this afternoon and
evening. Some of these storms may contain damaging winds and large
hail. Isolated flooding is possible, especially in urban and poor
drainage areas.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday.

Hazardous weather is not expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

In the hours before

Local storm report, Jul 1, 4:43 PM EDT, 52 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE WAKEFIELD VA
443 PM EDT WED JUL 1 2020

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0406 PM     MARINE TSTM WIND 1 ESE BAVON             37.33N 76.27W
07/01/2020  M51 MPH          MATHEWS            VA   MESONET

            MESONET STATION XNPC NEW POINT COMFORT.

&&

JM
Special weather statement, Jul 1, 4:55 PM EDT, 40 minutes before
Special Weather Statement
National Weather Service Wakefield VA
455 PM EDT Wed Jul 1 2020

NCZ015>017-102-012145-
Eastern Currituck-Pasquotank-Camden-Western Currituck-
455 PM EDT Wed Jul 1 2020

...A STRONG THUNDERSTORM WILL AFFECT SOUTHEASTERN CAMDEN...
SOUTHEASTERN PASQUOTANK AND NORTHEASTERN CURRITUCK COUNTIES...

At 454 PM EDT, a strong thunderstorm was located over Shiloh, or near
Camden, moving east at 25 mph.

Wind gusts in excess of 40 mph and pea size hail are possible with
this storm.

Locations impacted include...
Currituck, Grandy, Old Trap, Indiantown, Shiloh, Corolla, Belcross,
Poplar Branch, Aydlett, Gregory, Barco, Coinjock, Riddle, Waterlily,
Bertha, Goose Creek, Bartlett, Taylors Beach, Shawboro and Maple.

Strong wind gusts are possible with this storm. These wind gusts are
capable of knocking down tree limbs, small or weakened trees, and
blowing around trash cans, potted plants, lawn furniture, and other
light outdoor objects.

LAT...LON 3620 7608 3621 7610 3639 7618 3651 7584
      3642 7579 3635 7577 3625 7573 3619 7608
TIME...MOT...LOC 2054Z 253DEG 20KT 3630 7605

Miller
Special weather statement, Jul 1, 5:04 PM EDT, 31 minutes before
Special Weather Statement
National Weather Service Wakefield VA
504 PM EDT Wed Jul 1 2020

VAZ095-097-098-012145-
Norfolk/Portsmouth-Chesapeake-Virginia Beach-
504 PM EDT Wed Jul 1 2020

...A STRONG THUNDERSTORM WILL AFFECT ...THE EASTERN CITY OF
NORFOLK...THE NORTHEASTERN CITY OF CHESAPEAKE AND THE NORTHERN CITY
OF VIRGINIA BEACH...

At 503 PM EDT, a strong thunderstorm was located over Kempsville,
moving east at 30 mph.

Wind gusts in excess of 40 mph and pea size hail are possible with
this storm.

Locations impacted include...
Virginia Beach, Virginia Wesleyan University, Regent University,
Ocean View, Kempsville, Norfolk State University, Norfolk,
Chesapeake, Norfolk International, Norview, Princess Anne, South
Norfolk, Rudee Heights, Portlock, Princess Anne Plaza, Greenbrier,
Bayside, Dam Neck, Oceana NAS and Macons Corner.

Strong wind gusts are possible with this storm. These wind gusts are
capable of knocking down tree limbs, small or weakened trees, and
blowing around trash cans, potted plants, lawn furniture, and other
light outdoor objects.

LAT...LON 3677 7629 3684 7628 3684 7624 3685 7628
      3687 7628 3690 7626 3695 7626 3696 7613
      3695 7609 3697 7605 3697 7598 3693 7594
      3690 7594 3672 7589
TIME...MOT...LOC 2103Z 271DEG 25KT 3684 7614

Miller
Special weather statement, Jul 1, 5:09 PM EDT, 26 minutes before
Special Weather Statement
National Weather Service Wakefield VA
509 PM EDT Wed Jul 1 2020

VAZ081-088-089-092-093-012200-
Isle of Wight-Prince George-Surry-Sussex-Southampton-
509 PM EDT Wed Jul 1 2020

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT CENTRAL ISLE OF
WIGHT...NORTHEASTERN SOUTHAMPTON...CENTRAL PRINCE GEORGE...
NORTHEASTERN SUSSEX AND SURRY COUNTIES...

At 508 PM EDT, radar indicated strong thunderstorms were located
along a line extending from Cabin Point to near Waverly to near
Homeville. Movement was southeast at 25 mph.

Wind gusts in excess of 40 mph and pea size hail are possible with
these storms.
In addition...Rainfall amounts of up to 1 inch are possible with
these storms.

These storms will be near...
  Wakefield and Dendron around 525 PM EDT.
  Surry and Elberon around 535 PM EDT.
  Ivor around 545 PM EDT.
  Zuni around 555 PM EDT.
  Isle Of Wight and Sedley around 600 PM EDT.

Other locations impacted by these storms include Vicksville, Taylors
Corner, Booth Fork, Carsley, Pons, Spring Grove, Bethel Church,
Lumberton, Ellis Fork and Dory.

Strong wind gusts are possible with these storms. These wind gusts
are capable of knocking down tree limbs, small or weakened trees, and
blowing around trash cans, potted plants, lawn furniture, and other
light outdoor objects.

Motorists should use extra caution in the vicinity of these storms.
Be prepared for rapid changes in weather and road conditions. Heavy
rain could cause ponding of water on roads, and possible minor
flooding of ditches and poor drainage areas.

LAT...LON 3671 7703 3703 7737 3714 7715 3726 7704
      3705 7665 3685 7671
TIME...MOT...LOC 2108Z 311DEG 21KT 3720 7701 3709 7705 3702 7723

BROWN
Local storm report, Jul 1, 5:21 PM EDT, 14 minutes before
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        Please try again in a few minutes.
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The office that day

Everything else NWS Wakefield, VA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 1, 1:48 AM EDTSpecial Weather StatementAKQGoochland, Powhatan57 min
Jul 1, 2:58 AM EDTSpecial Weather StatementAKQFluvanna62 min
Jul 1, 11:00 AM EDTSpecial Marine WarningAKQ45 min
Jul 1, 12:16 PM EDTSpecial Weather StatementAKQAccomack29 min
Jul 1, 12:44 PM EDTSpecial Weather StatementAKQNorthumberland46 min
Jul 1, 12:47 PM EDTSpecial Weather StatementAKQEssex43 min
Jul 1, 12:51 PM EDTSpecial Marine WarningAKQ39 min
Jul 1, 12:59 PM EDTSpecial Marine WarningAKQ61 min
Jul 1, 1:12 PM EDTSpecial Weather StatementAKQLancaster, Middlesex48 min
Jul 1, 1:24 PM EDTSpecial Weather StatementAKQAccomack51 min
Jul 1, 1:27 PM EDTSpecial Marine WarningAKQ63 min
Jul 1, 1:33 PM EDTSpecial Weather StatementAKQKing and Queen42 min
Jul 1, 1:37 PM EDTSevere Thunderstorm WarningAKQAccomack38 min
Jul 1, 1:55 PM EDTSpecial Marine WarningAKQ65 min
Jul 1, 2:00 PM EDTSevere Thunderstorm WarningAKQGloucester, Lancaster, Mathews, Middlesex45 min
Jul 1, 2:07 PM EDTSevere Thunderstorm WarningAKQAccomack38 min
Jul 1, 2:12 PM EDTSpecial Marine WarningAKQ63 min
Jul 1, 2:15 PM EDTSpecial Weather StatementAKQCharles City, Henrico45 min
Jul 1, 2:20 PM EDTSpecial Weather StatementAKQPrince Edward40 min
Jul 1, 2:34 PM EDTSpecial Marine WarningAKQ56 min
Jul 1, 2:51 PM EDTSpecial Marine WarningAKQ54 min
Jul 1, 2:57 PM EDTSevere Thunderstorm WarningAKQNorthampton63 min
Jul 1, 3:04 PM EDTSpecial Weather StatementAKQCharles City, New Kent41 min
Jul 1, 3:17 PM EDTSevere Thunderstorm WarningAKQCharles City43 min
Jul 1, 3:18 PM EDTSpecial Weather StatementAKQChesterfield, Powhatan42 min
Jul 1, 3:40 PM EDTSevere Thunderstorm WarningAKQCharles City, James City, Prince George, Surry, City of Williamsburg30 min
Jul 1, 3:40 PM EDTSevere Thunderstorm WarningAKQChesterfield, Powhatan, City of Richmond50 min
Jul 1, 3:48 PM EDTSpecial Marine WarningAKQ57 min
Jul 1, 3:52 PM EDTSpecial Weather StatementAKQYork38 min
Jul 1, 3:55 PM EDTSpecial Marine WarningAKQ65 min
Jul 1, 4:01 PM EDTSpecial Weather StatementAKQCity of Virginia Beach44 min
Jul 1, 4:03 PM EDTSpecial Weather StatementAKQNorthampton42 min
Jul 1, 4:14 PM EDTSpecial Weather StatementAKQFluvanna46 min
Jul 1, 4:16 PM EDTSpecial Marine WarningAKQ59 min
Jul 1, 4:18 PM EDTSevere Thunderstorm WarningAKQCharles City, Chesterfield, Henrico, Prince George, City of Colonial Heights, City of Hopewell and 2 more42 min
Jul 1, 4:24 PM EDTAreal Flood AdvisoryAKQChesterfield, Henrico, City of Richmond6 min
Jul 1, 4:24 PM EDTSevere Thunderstorm WarningAKQFluvanna24 min
Jul 1, 4:26 PM EDTSpecial Marine WarningAKQ64 min
Jul 1, 4:30 PM EDTFlash Flood WarningAKQChesterfield, Henrico, City of Richmond2 hr
Jul 1, 4:30 PM EDTSpecial Weather StatementAKQYork, City of Newport News45 min
Jul 1, 4:46 PM EDTSpecial Marine WarningAKQ59 min
Jul 1, 4:53 PM EDTSevere Thunderstorm WarningAKQIsle of Wight, City of Hampton, City of Newport News52 min
Jul 1, 4:58 PM EDTSpecial Marine WarningAKQ49 min
Jul 1, 5:00 PM EDTFlash Flood WarningAKQChesterfield, Hanover, Henrico, City of Richmond117 min
Jul 1, 5:04 PM EDTSpecial Weather StatementAKQCity of Norfolk, City of Virginia Beach41 min
Jul 1, 5:09 PM EDTSpecial Weather StatementAKQIsle of Wight, Surry, Sussex51 min
Jul 1, 5:11 PM EDTAreal Flood AdvisoryAKQCity of Norfolk, City of Virginia Beach24 min
Jul 1, 5:29 PM EDTSevere Thunderstorm WarningAKQCity of Chesapeake, City of Virginia Beach31 min
Jul 1, 5:35 PM EDTSpecial Marine WarningAKQ55 min
Jul 1, 5:39 PM EDTSpecial Marine WarningAKQ37 min
Jul 1, 5:52 PM EDTSpecial Weather StatementAKQCity of Chesapeake, City of Virginia Beach53 min
Jul 1, 6:06 PM EDTSpecial Weather StatementAKQGreensville, City of Emporia39 min
Jul 1, 6:27 PM EDTSpecial Marine WarningAKQ63 min
Jun 30, 10:24 PM EDTFlash Flood WarningAKQHertford, Northampton2 hr
Jul 1, 4:55 PM EDTSpecial Weather StatementAKQCurrituck50 min
Jul 1, 6:33 PM EDTSpecial Weather StatementAKQGates42 min
Jul 1, 7:05 PM EDTSpecial Weather StatementAKQCamden, Chowan, Currituck, Pasquotank, Perquimans40 min
Jul 1, 7:25 PM EDTSevere Thunderstorm WarningAKQBertie, Chowan, Hertford, Perquimans50 min
Jul 1, 7:46 PM EDTSpecial Weather StatementAKQBertie44 min
Jul 1, 1:58 AM EDTSpecial Weather StatementAKQDorchester62 min
Jul 1, 3:06 AM EDTSpecial Weather StatementAKQSomerset54 min
Jul 1, 5:31 AM EDTSpecial Weather StatementAKQDorchester59 min
Jul 1, 9:47 AM EDTSpecial Weather StatementAKQDorchester43 min

Nearby

Flash Flood Warnings in Virginia, 2020Every flash flood warning in 2020

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.