Alert archive / Virginia / Special Weather Statements in 2020

Special Weather Statement, NWS Wakefield, VA

July 21, 20208 counties in Virginia

NWS Wakefield, VA issued this special weather statement at Jul 21, 2020, 9:39 PM EDT for 8 counties in Virginia. It was in force for 51 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Jul 21, 2020, 9:39 PM EDT (01:39 UTC)
Expired
Jul 21, 2020, 10:30 PM EDT
In force
51 min
Issued by
NWS Wakefield, VA

Counties Chesterfield County, VA, City of Colonial Heights, VA, City of Hopewell, VA, City of Petersburg, VA, City of Richmond, VA, Dinwiddie County, VA, Hanover County, VA, Henrico County, VA

The radar

The Norfolk radar (KAKQ), 66 km from the middle of the area, began a volume at 01:43 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

Roanoke, VA (KRNK), launched 00:00Z, 1.7 hours before the alert went out and 170 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, Roanoke, VA at 00:00Z on 2020-07-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 895 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, Roanoke, VA at 00:00Z on 2020-07-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 34 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
895 J/kg
Mixed-layer CIN
-36 J/kg
Mixed-layer LCL
1464 m above ground
0-6 km bulk shear
10 kt
0-1 km storm-relative helicity
34 m²/s²
0-3 km storm-relative helicity
55 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at Jul 21, 9:17 PM EDT, 22 minutes earlier.

Area forecast discussion, Jul 21, 9:17 PM EDT, 22 minutes before
AREA FORECAST DISCUSSION
National Weather Service Wakefield VA
917 PM EDT Tue Jul 21 2020

.SYNOPSIS...
Hot and humid conditions will remain in place through Thursday
with scattered thunderstorms each afternoon and evening. A weak
cold front will approach from the northwest late Thursday, and
be slow to cross the region into the early Saturday.

&&

.NEAR TERM /UNTIL 6 AM WEDNESDAY MORNING/...
As of 915 PM EDT Tuesday...

FYI...record high of 102 at ORF today. See CLIORF for details.

Latest MSAS shows a weak frontal boundary draped across the Potomac
River to near WAL while a weak sfc trof extends south across the
Piedmont. SCT convection developed along these 2 features over the
past svrl hrs. Some strong storms were observed but no reports of
damage received through this writing. Hvy downpours, gusts 40-50 mph,
small hail/fqt lightning were all noted.

High res data shows this activity continuing for another few hrs
before weakening/dissipating by 06Z. Will keep chc PoPs going most
areas thru then. Some ptchy fog psbl in areas that did get rain,
but not widespread enough to include in the overnite forecast.
Warm/humid with lows in the 70s.

&&

.SHORT TERM /6 AM WEDNESDAY MORNING THROUGH FRIDAY/...
As of 200 PM EDT Tuesday...

The initial boundary now near the nrn portion of the FA dissipates
Wed and the FA will have deep layered SW flow and another day
of hot wx. PoPs back off a bit Wed (w/ poss exception to the far
NW late) and temperatures/humidity will once again be high.
Otw...partly sunny w/ highs ranging through the 90s (heat indices
back to around 102-109F). Convection may linger N and NW into
the overnight hours Wed night. Otw...partly cloudy w/ lows mainly
in the m-u70s.

Some cooling aloft by Thu as an upper trough begins its push
into the NE/mid-Atlantic region. Another hot/humid day is
anticipated but w/ increased clouds (esp N and W) and PoPs (all
areas - late SE). Highs Thu in the l-m90s with some upper 90s
poss SE VA-NE NC.

Have extended current heat advisory through Wed and will most
likely need an additional heat advisory headline Thu (namely for
ern/SE VA and NE NC).

A cold front will slowly push SE across the FA Thu night through
Friday...ending the current heatwave for good. Will have VRB
clouds-mostly cloudy conditions w/ high PoPs for SHRAs/tstms
(50-60%). Lows Thu night in the l-m70s...except u70s in the
urban areas of SE VA. Highs Fri in the u80s-around 90F.

&&

.LONG TERM /FRIDAY NIGHT THROUGH TUESDAY/...
As of 140 PM EDT Tuesday...

Trough aloft INVOF NE CONUS/mid-Atlantic regions Fri night into
Sat dampens out/shifts out the ENE late in the weekend w/ the
heat ridge expanding back E into the local area. Remnants of a
frontal boundary will linger INVOF SE VA into NE NC (Sat)...otw
weak sfc hi pres to the NNE of FA will extend sufficiently S to
provide near seasonable conditions. By Sun into Mon...sfc hi
pres becomes situated E of the SE CONUS coast resulting in winds
becoming SW and a return to the higher heat/humidity (while
PoPs stay blo 20%). By Tue...the next cold front will attempt to
cross the FA...still hot but w/ a bit higher PoPs.

Lows Fri night from the u60s-l70s...except m70s in the metro
areas in SE VA. Highs Sat in the m-u80s at the coast...and
u80s-around 90F inland. Lows Sat night mainly 70-75F. Highs Sun
in the u80s right at the immediate coast to the l90s elsewhere.
Lows Sunday night in the l-m70s. Highs Mon/Tue mainly in the
m-u90s.

&&

.AVIATION /01Z WEDNESDAY THROUGH SUNDAY/...
As of 715 PM EDT Tuesday...

Per current radar trends, VCTS at RIC/ORF/PHF for the next few hrs
before the models show most convection dissipating due to loss of
heating. OTW, VFR conditions thru the period with SCT-BKN CU dvlpng
once again Wed aftrn. Could be some ptchy ground fog tonite in areas
that get rain, but not widespread enough to include in forecast attm.
SSW winds aob 10 kts.

OUTLOOK...
A weak cold front late Thu-Fri could bring somewhat higher coverage
of storms. Sfc hi pres builds N of the local area Sat...however at
least ISOLD SHRAs/tstms will still be poss NC. Lower pcpn chances
are expected over the entire area Sun.

&&

.MARINE...
As of 140 PM EDT Tuesday...

No marine headlines expected through the end of the week. A weak and
nearly stationary boundary is over the northern waters this
afternoon. Winds over the bay are onshore 5 kts or less. Winds over
the northern coastal waters are E/NE 5-10 kts and S/SW 5-10 over the
southern coastal waters. Waves in the bay 1-2 ft and seas 2-3 ft.
Scattered thunderstorms this afternoon and evening may result in
brief gusty winds but would be handled with MWS/SMW's.

Winds Wednesday through Friday will generally be S/SW 5-15 kts.
Waves in the bay continue 1-2 ft. Seas 2-3 ft Wednesday and Thursday
and 2-4 ft on Friday. A front approaches the area from the north and
crosses a portion of the area Friday into Saturday. Scattered
afternoon/evening convection possible each day Wednesday through
Friday.

&&

.CLIMATE...
As of 540 PM EDT Monday...

Hot weather conts through Thursday. We broke a record at ORF today
and managed to tie/break a couple of records on Sunday, and Wallops
did set a record Monday, and ORF set a record high min of 82F on Mon.
 Otherwise, no additional records set/tied at SBY/RIC/ECG Monday.

* High of 100 was observed at ORF Monday, after a high of 102
  on Sunday.

	* Last time 2 consecutive days of 100F+ occurred:

    * at Norfolk was 7/21-7/22/2019

* Last time a min of 80F+ occurred:

* at RIC:	7/6/2012
* at ORF:   7/22/2019 (Occurred Monday)
* at SBY:	7/21/2019
* at ECG:	7/21/2019

* Record Highs for Tue 7/21:

* Site

* RIC: 104 (1930)
* ORF: 102 (2020)
* SBY: 106 (1930)
* ECG: 102 (1987)

* Record High Mins for today/Tue 7/21:

* Site

* RIC: 77 (1930)
* ORF: 80 (2019)
* SBY: 80 (2019)
* ECG: 80 (2019)

&&

.AKQ WATCHES/WARNINGS/ADVISORIES...
MD...Heat Advisory until 8 PM EDT Wednesday for MDZ021>024.
NC...Heat Advisory until 8 PM EDT Wednesday for NCZ012>017-030>032-
     102.
VA...Heat Advisory until 8 PM EDT Wednesday for VAZ048-060>062-
     064>069-075>090-092-093-095>100-509>525.
MARINE...None.

&&

SYNOPSIS...LKB
NEAR TERM...MPR
SHORT TERM...ALB
LONG TERM...ALB
AVIATION...MPR
MARINE...CMF
CLIMATE...AKQ
Hazardous weather outlook, Jul 21, 2:32 PM EDT, 7 hours 7 minutes before
Hazardous Weather Outlook
National Weather Service Wakefield VA
232 PM EDT Tue Jul 21 2020

MDZ021>024-NCZ012>017-030>032-102-VAZ048-060>062-064>069-075>090-092-
093-095>100-509>525-221845-
Dorchester-Wicomico-Somerset-Inland Worcester-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-
232 PM EDT Tue Jul 21 2020

...HEAT ADVISORY IN EFFECT UNTIL 8 PM EDT WEDNESDAY...

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...This afternoon and tonight.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Heat Advisory.

In addition, localized flash flooding will be possible this
afternoon and evening from slow moving thunderstorms.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Heat Advisory.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

MDZ025-221845-
Maryland Beaches-
232 PM EDT Tue Jul 21 2020

This Hazardous Weather Outlook is for southeast Maryland.

.DAY ONE...This afternoon and tonight.

Localized heavy rainfall will be possible this afternoon and
evening.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

In the hours before

Special weather statement, Jul 21, 8:00 PM EDT, 1 hour 39 minutes before
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Special weather statement, Jul 21, 8:10 PM EDT, 1 hour 29 minutes before
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Special weather statement, Jul 21, 8:26 PM EDT, 1 hour 13 minutes before
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Special weather statement, Jul 21, 8:50 PM EDT, 49 minutes before
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Special weather statement, Jul 21, 9:30 PM EDT, 9 minutes before
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Special weather statement, Jul 21, 9:39 PM EDT, 0 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Jul 21, 8:00 PM EDTSpecial Weather StatementAKQGoochland30 min
Jul 21, 8:10 PM EDTSpecial Weather StatementAKQWestmoreland50 min
Jul 21, 8:16 PM EDTSevere Thunderstorm WarningAKQCaroline, Essex, Richmond, Westmoreland27 min
Jul 21, 8:26 PM EDTSpecial Weather StatementAKQAccomack64 min
Jul 21, 8:50 PM EDTSpecial Weather StatementAKQWestmoreland25 min
Jul 21, 10:15 PM EDTSevere Thunderstorm WarningAKQCharles City, Chesterfield, Hanover, Henrico, New Kent45 min
Jul 21, 10:22 PM EDTSpecial Weather StatementAKQPrince George, City of Petersburg38 min
Jul 21, 10:41 PM EDTSpecial Weather StatementAKQCharles City19 min
Jul 21, 10:48 PM EDTSpecial Weather StatementAKQGloucester, Middlesex, City of Williamsburg42 min
Jul 21, 10:57 PM EDTSpecial Weather StatementAKQChesterfield33 min
Jul 21, 11:27 PM EDTAreal Flood AdvisoryAKQGloucester10 min
Jul 21, 11:29 PM EDTSpecial Weather StatementAKQGloucester, Mathews, Middlesex, York, City of Newport News, City of Williamsburg46 min
Jul 21, 11:37 PM EDTFlash Flood WarningAKQGloucester3 hr
Jul 21, 11:40 PM EDTSpecial Weather StatementAKQAmelia, Cumberland, Powhatan50 min
Jul 21, 11:45 PM EDTAreal Flood AdvisoryAKQJames City, York, City of Williamsburg12 min
Jul 21, 11:57 PM EDTFlash Flood WarningAKQJames City, York, City of Williamsburg3 hr
Jul 22, 12:15 AM EDTSpecial Weather StatementAKQSurry, City of Newport News45 min
Jul 22, 12:42 AM EDTSpecial Weather StatementAKQChesterfield, Cumberland, Powhatan, City of Richmond48 min
Jul 22, 1:07 AM EDTAreal Flood AdvisoryAKQChesterfield, Henrico, City of Hopewell, City of Richmond3 hr
Jul 22, 1:17 AM EDTSpecial Weather StatementAKQCharles City, Chesterfield, Henrico, City of Colonial Heights, City of Hopewell, City of Petersburg43 min
Jul 22, 2:29 PM EDTSpecial Weather StatementAKQLouisa46 min
Jul 22, 3:23 PM EDTSpecial Weather StatementAKQLouisa37 min
Jul 22, 4:05 PM EDTSpecial Weather StatementAKQFluvanna, Louisa55 min
Jul 22, 4:40 PM EDTSpecial Weather StatementAKQCaroline65 min
Jul 22, 4:59 PM EDTSpecial Weather StatementAKQAmelia, Cumberland, Fluvanna, Goochland, Hanover, Louisa and 4 more61 min
Jul 22, 5:25 PM EDTSevere Thunderstorm WarningAKQCumberland50 min
Jul 22, 5:46 PM EDTSpecial Weather StatementAKQCaroline, Essex, Westmoreland59 min
Jul 22, 6:18 PM EDTSpecial Weather StatementAKQCity of Norfolk, City of Portsmouth42 min
Jul 22, 6:55 PM EDTSpecial Weather StatementAKQCity of Richmond50 min
Jul 22, 7:00 PM EDTSpecial Weather StatementAKQCity of Virginia Beach45 min
Jul 22, 7:03 PM EDTSpecial Marine WarningAKQ57 min
Jul 22, 7:20 PM EDTSpecial Marine WarningAKQ55 min
Jul 21, 9:30 PM EDTSpecial Weather StatementAKQDorchester60 min
Jul 21, 9:53 PM EDTSpecial Weather StatementAKQDorchester52 min
Jul 21, 11:56 PM EDTSpecial Weather StatementAKQSomerset49 min
Jul 22, 12:29 AM EDTSpecial Weather StatementAKQWorcester46 min
Jul 22, 12:45 AM EDTSpecial Weather StatementAKQWorcester45 min
Jul 22, 4:54 PM EDTSpecial Weather StatementAKQDorchester51 min
Jul 22, 5:12 PM EDTSevere Thunderstorm WarningAKQDorchester63 min

Nearby

Special Weather Statements in Virginia, 2020Every special weather statement 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.