Alert archive / Virginia / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 24, NWS Wakefield, VA

May 10, 2018Fluvanna County, Goochland County, Louisa County, Virginia

NWS Wakefield, VA issued this severe thunderstorm warning at May 10, 2018, 2:57 PM EDT for Fluvanna County, Goochland County, Louisa County, Virginia. It was in force for 48 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
May 10, 2018, 2:57 PM EDT (18:57 UTC)
Expired
May 10, 2018, 3:45 PM EDT
In force
48 min
Issued by
NWS Wakefield, VA
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Fluvanna County, VA, Goochland County, VA, Louisa County, VA

The radar

The Norfolk radar (KAKQ), 133 km from the middle of the area, began a volume at 19:00 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
May 10, 1:14 PM EDTSevere Thunderstorm WatchSPC8 hr

The nearest sounding before it

Washington/Dulle, VA (KIAD), launched 12:00Z, 7.0 hours before the alert went out and 135 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, Washington/Dulle, VA at 12:00Z on 2018-05-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, Washington/Dulle, VA at 12:00Z on 2018-05-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 206 square meters per square second.193958Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1336 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
206 m²/s²
0-3 km storm-relative helicity
171 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

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 Wakefield, VA wrote its last area forecast discussion before this severe thunderstorm warning went out at May 10, 1:33 PM EDT, 1 hour 24 minutes earlier.

Area forecast discussion, May 10, 1:33 PM EDT, 1 hour 24 minutes before
Area Forecast Discussion
National Weather Service Wakefield VA
133 PM EDT Thu May 10 2018

.SYNOPSIS...
A weak cold front will move across the area and off the coast
later today and tonight, then lifts back north as a warm front
late Friday. High pressure will set up off the southeast coast
over the weekend. A backdoor cold front sags south from near the
Mason-Dixon line late Sunday.

&&

.NEAR TERM /THROUGH TONIGHT/...
As of 1015 AM EDT...

High res reflectivity (HRRR) suggests a few isolated showers
still possible over extrm nrn counties between 14Z-16Z.
Otherwise, expect dry wx between 15Z-18Z over the cwa. This is
where temps will take off with enough heating progged for
readings to soar into the 80s. This is the time frame where the
airmass over the region will likely become unstable allowing
for convection to develop once convective temps are met.

Then after 18Z, models/HRRR reflectivity indicates an organized
line of convection to develop along the lee trof acrs the mtns
which will spread rather quickly SE acrs the local area late
this aftn and evening. This line is where the severe threat for
large hail, damaging winds and locally heavy downpours will be.
SPC has upgraded to SLGHT risk where yesterdays marginal risk
was, with now a marginal risk all the way to the coast. Timing
wise, 19Z-23Z for the RIC/SBY areas, 21Z-02Z for SE VA/NE NC
areas. High temps before any convection in the lower to mid 80s
west of the Ches Bay, upper 70s to lower 80s along the coast.

Data suggests convection weakens this evening, as it tracks
towards the coast with any severe threat ending by 03Z. Sky
become clear to partly cloudy after midnight, with some patchy
fog developing again. Lows tonight in the upper 50s to mid 60s.

&&

.SHORT TERM /FRIDAY THROUGH SUNDAY/...
As of 300 AM EDT...

High pressure returns Fri with a frontal boundary meandering just
north of the local area. Thus, pt to mstly sunny skies are expected.
Light onshore flow keep temps cooler near the coast. Highs 80-85
west of the bay, 75-80 along the coast.

Mstly dry Fri nite but models show the bndry sagging a bit farther
south for a psbl late nite shwr over  Dorchester-Wicomico cntys.
Otw, mstly clr to pt cldy with lows upr 50s-lwr 60s.

H5 ridge sets up off the coast Sat allowing for rising H85 temps.
Meanwhile, airmass will be capped except across the ern shore where
the frontal bndry will be close enuf for late day convection to
dvlp. Thus, Sat looks pt to mstly sunny and hot with chc late
day/eve pops across the nern half of the fa. Highs upr 80s-lwr 90s
except low-mid 80s at the beaches. Lows Sat nite in the 60s.

Almost a repeat forecast Mothers Day with the bndry hanging out just
north of the local area early. Look for chc late day pops across nrn
most zones Sun as the bndry sags south a bit in the aftrn. Highs upr
80s-lwr 90s except upr 70s-lwr 80s ern shore.

&&

.LONG TERM /SUNDAY NIGHT THROUGH THURSDAY/...
As of 110 PM EDT Thursday...

A weak frontal boundary will settle over the FA by Sun
night...then dissipate Mon. VRB-onshore winds likely to bring
cooling and potentially mostly cloudy conditions to a least the
ern shore locations Sun night into Mon. A flat ridge aloft will
remain dominant across the SE-Mid Atlantic states through mid
next week...resulting in generally above normal temperatures and
daily (mainly diurnal) PoPs Mon-Tue. By Wed-Thu...expecting
increasing moisture (and PoPs) from the S as weak trough aloft
and possible accompanying sfc lo pres pushes into the SE CONUS.

Lows Sun night in the u50s-l60s N and NE to the u60s central/S.
Highs Mon in the 70s at the coast to the m80s-around 90F
inland. Lows Mon night ranging through the 60s. Highs Tue-Wed
from the u70s at the coast to the 80s inland. Highs Thu from the
u70s-l80s. Lows Tue night/Wed night in the 60s.

&&

.AVIATION /18Z THURSDAY THROUGH TUESDAY/...
As of 630 AM...

Fod should dissipate at ECG next 1-2 hrs. Otw, the day starts
off with VFR conditions along with incrg SW winds (15-25KTS).

Latest high res data continues to show a broken line of shwrs/tstms
dvlpng along the lee trof then tracking SE across the local area
after 18Z. Given decent model agreement and with the help of hrly
BUFKIT data, went ahead and timed out the convection at the TAF
sites with a VCTS for now. 19Z-23Z at RIC/SBY...20Z-00Z at SBY...
20Z-02Z at ORF/ECG. Skies clr late tonite along with a wind
shift to the WNW.

OUTLOOK...
VFR conditions expected on Fri/Sat as high pressure returns and
then slides offshore. One exception will be at SBY where a bndry
will likely stall early allowing for wdly sct shwrs and psbl
ptchy fog. Tstm chances return Sunday afternoon- evening across
all terminals.

&&

.MARINE...
As of 130 PM EDT Thursday...

Marginal SCAs will remain for the ocean waters N of Cape Charles
Light due to seas 4-5 ft (highest from 10 NM on out) until about
04Z/11. Sfc hi pres E of NC will continue to weaken this eve.
SSW winds avgg about 15 kt...except 15-20 kt w/ occasional
gusts around 25 kt N of Cape Charles VA into this eve. Isold
strong tstms possible late this afternoon and evening. No real
push of cold air is expected behind fropa early Fri morning...so
despite wind direction becoming NNE for a time Fri morning
(becoming ESE by late in the day)...speeds remain AOB 15 kt.
Winds S again Sat AOB 15 kt as the frontal boundary lifts back
N of the region. Models still suggest that a weakening frontal
boundary sinks S at least over nrn portions of the local waters
by late Sun/Sun night result into winds become N then E. That
front dissipates Mon.

&&

.AKQ WATCHES/WARNINGS/ADVISORIES...
MD...None.
NC...None.
VA...None.
MARINE...Small Craft Advisory until midnight EDT tonight for ANZ650-652-
     654.

&&

SYNOPSIS...TMG
NEAR TERM...MPR/TMG
SHORT TERM...MPR
LONG TERM...ALB
AVIATION...MPR
MARINE...ALB/JDM
Hazardous weather outlook, May 10, 6:16 AM EDT, 8 hours 41 minutes before
Hazardous Weather Outlook
National Weather Service Wakefield VA
616 AM EDT Thu May 10 2018

MDZ022>025-NCZ012>017-030>032-102-VAZ065-066-079-084-086>090-092-093-
095>100-523>525-111030-
Wicomico-Somerset-Inland Worcester-Maryland Beaches-Northampton-
Hertford-Gates-Pasquotank-Camden-Western Currituck-Bertie-Chowan-
Perquimans-Eastern Currituck-Mecklenburg-Lunenburg-Brunswick-
Gloucester-Mathews-Greensville-Sussex-Surry-James City-Southampton-
Isle of Wight-Norfolk/Portsmouth-Suffolk-Chesapeake-Virginia Beach-
Accomack-York-Newport News-Hampton/Poquoson-
616 AM EDT Thu May 10 2018

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

.DAY ONE...Today and Tonight.

A line of thunderstorms will track across the area late this
afternoon and evening. Some thunderstorms may become severe with
damaging wind gusts and large hail. Locally heavy downpours may
result in minor flooding of low lying and poor drainage areas.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed later today.

MDZ021-VAZ048-060>062-064-067>069-075>078-080>083-085-509>522-111030-
Dorchester-Fluvanna-Prince Edward-Cumberland-Goochland-Caroline-
Nottoway-Amelia-Powhatan-Westmoreland-Richmond-Northumberland-
Lancaster-Dinwiddie-Prince George-Charles City-New Kent-Middlesex-
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-
616 AM EDT Thu May 10 2018

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

.DAY ONE...Today and Tonight.

A line of thunderstorms will track across the area this afternoon
and early evening. Some thunderstorms may become severe with
damaging wind gusts and large hail. Locally heavy downpours may
result in minor flooding of low lying and poor drainage areas.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed later today.

In the hours before

Special weather statement, May 10, 2:17 PM EDT, 40 minutes before
Special Weather Statement
National Weather Service Wakefield VA
217 PM EDT THU MAY 10 2018

VAZ048-509-101900-
Fluvanna-Western Louisa-
217 PM EDT THU MAY 10 2018

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT NORTHWESTERN LOUISA AND
NORTHERN FLUVANNA COUNTIES...

At 217 PM EDT, radar indicated strong thunderstorms located along a
line extending from near Boswells Tavern to 6 miles north of
Schuyler. Movement was east at 40 mph.

Wind gusts in excess of 40 mph and nickel size hail are possible with
these storms.

Locations impacted include...
Louisa, Palmyra, Lake Monticello, Ferncliff, Boswells Tavern, Kents
Store, Troy, Gordonsville, Nahor, Green Springs, Zion Crossroads,
Antioch, Union Mills, Wildwood, Bybee, Waldrop, Byrd Mill,
Trevilians, Wilmington and Vawter Corner.

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.

These storms may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

LAT...LON 3806 7826 3813 7821 3813 7818 3814 7815
      3814 7812 3815 7809 3813 7805 3814 7801
      3812 7798 3811 7793 3812 7792 3811 7791
      3790 7807 3783 7816 3784 7845
TIME...MOT...LOC 1817Z 271DEG 33KT 3808 7823 3789 7867

MRD
Local storm report, May 10, 2:50 PM EDT, 7 minutes before
<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Service Notice</title>
  <link rel="stylesheet" href="index.css">
</head>
<body>
  <main class="wrap">
    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
      <p id="message2">
        Please try again in a few minutes.
      </p>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>

The office that day

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

IssuedProductOfficeCountiesLasted
May 9, 9:40 PM EDTMarine Dense Fog AdvisoryAKQ10 hr
May 9, 11:54 PM EDTDense Fog AdvisoryAKQAccomack, Greensville, James City, Northampton, Southampton, Surry and 10 more6 hr
May 10, 2:17 PM EDTSpecial Weather StatementAKQLouisa43 min
May 10, 2:22 PM EDTSevere Thunderstorm WarningAKQFluvanna, Louisa38 min
May 10, 3:15 PM EDTSpecial Weather StatementAKQFluvanna45 min
May 10, 3:26 PM EDTSevere Thunderstorm WarningAKQCumberland, Fluvanna, Goochland49 min
May 10, 3:30 PM EDTSevere Thunderstorm WarningAKQCaroline, Hanover45 min
May 10, 3:49 PM EDTSevere Thunderstorm WarningAKQCumberland, Goochland, Hanover, Louisa, Powhatan41 min
May 10, 4:03 PM EDTSpecial Weather StatementAKQAmelia, Nottoway, Prince Edward42 min
May 10, 4:13 PM EDTSevere Thunderstorm WarningAKQCaroline, Essex, Hanover, King and Queen, King William, Richmond47 min
May 10, 4:15 PM EDTSevere Thunderstorm WarningAKQCaroline, Chesterfield, Hanover, Henrico, King William, City of Richmond45 min
May 10, 4:19 PM EDTSevere Thunderstorm WarningAKQAmelia, Chesterfield, Powhatan41 min
May 10, 4:49 PM EDTSevere Thunderstorm WarningAKQCharles City, Hanover, Henrico, King and Queen, King William, New Kent41 min
May 10, 4:54 PM EDTSpecial Weather StatementAKQBrunswick, Lunenburg, Mecklenburg, Nottoway, Prince Edward51 min
May 10, 4:55 PM EDTSpecial Marine WarningAKQ65 min
May 10, 4:55 PM EDTSevere Thunderstorm WarningAKQEssex, King and Queen, Lancaster, Middlesex, Northumberland, Richmond40 min
May 10, 4:56 PM EDTSevere Thunderstorm WarningAKQAmelia, Charles City, Chesterfield, Dinwiddie, Henrico, Prince George and 3 more64 min
May 10, 5:06 PM EDTSpecial Marine WarningAKQ84 min
May 10, 5:17 PM EDTSpecial Marine WarningAKQ118 min
May 10, 5:19 PM EDTSevere Thunderstorm WarningAKQCharles City, Essex, Gloucester, James City, King and Queen, King William and 4 more41 min
May 10, 5:35 PM EDTSevere Thunderstorm WarningAKQBrunswick, Mecklenburg40 min
May 10, 5:39 PM EDTSpecial Weather StatementAKQDinwiddie36 min
May 10, 5:43 PM EDTSevere Thunderstorm WarningAKQBrunswick, Dinwiddie, Greensville, Prince George, Sussex32 min
May 10, 5:43 PM EDTSevere Thunderstorm WarningAKQGloucester, Lancaster, Mathews, Middlesex, Northumberland47 min
May 10, 5:58 PM EDTSpecial Weather StatementAKQCharles City, Prince George, City of Hopewell, City of Petersburg32 min
May 10, 5:59 PM EDTSpecial Marine WarningAKQ2 hr
May 10, 6:08 PM EDTSevere Thunderstorm WarningAKQIsle of Wight, Prince George, Southampton, Surry, Sussex52 min
May 10, 6:11 PM EDTSpecial Weather StatementAKQGreensville, City of Emporia49 min
May 10, 6:22 PM EDTSpecial Weather StatementAKQAccomack53 min
May 10, 6:31 PM EDTSpecial Marine WarningAKQ89 min
May 10, 6:34 PM EDTSpecial Marine WarningAKQ41 min
May 10, 6:39 PM EDTSpecial Marine WarningAKQ96 min
May 10, 6:44 PM EDTSpecial Weather StatementAKQIsle of Wight, James City, Surry, York, City of Hampton, City of Newport News and 4 more46 min
May 10, 7:01 PM EDTSpecial Weather StatementAKQSouthampton, City of Franklin59 min
May 10, 7:35 PM EDTSpecial Weather StatementAKQNorthampton10 min
May 10, 7:39 PM EDTSpecial Weather StatementAKQCity of Chesapeake, City of Suffolk51 min
May 10, 7:45 PM EDTSpecial Marine WarningAKQ2 hr

Nearby

Severe Thunderstorm Warnings in Virginia, 2018Every severe thunderstorm 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.