Alert archive / North Carolina / Severe Thunderstorm Warnings in 2008

Severe Thunderstorm Warning 33, NWS Wakefield, VA

April 20, 20084 counties in North Carolina

NWS Wakefield, VA issued this severe thunderstorm warning at Apr 20, 2008, 8:12 PM EDT for 4 counties in North Carolina. It was in force for 33 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
Apr 20, 2008, 8:12 PM EDT (00:12 UTC)
Expired
Apr 20, 2008, 8:45 PM EDT
In force
33 min
Issued by
NWS Wakefield, VA
Area
Storm-based polygon

Counties Bertie County, NC, Gates County, NC, Hertford County, NC, Northampton County, NC

The radar

The Norfolk radar (KAKQ), 74 km from the middle of the area, began a volume at 00:13 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
Apr 20, 1:47 PM EDTSevere Thunderstorm WatchSPC8 hr
Apr 20, 8:01 PM EDTTornado WatchSPC5 hr

The nearest sounding before it

Newport, NC (KMHX), launched 00:00Z, 0.2 hours before the alert went out and 172 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, Newport, NC at 00:00Z on 2008-04-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 386 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, Newport, NC at 00:00Z on 2008-04-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 89 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
386 J/kg
Mixed-layer CIN
-39 J/kg
Mixed-layer LCL
1132 m above ground
0-6 km bulk shear
46 kt
0-1 km storm-relative helicity
89 m²/s²
0-3 km storm-relative helicity
73 m²/s²
Significant tornado parameter
0.1
Supercell composite
1.7

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 Apr 20, 8:05 PM EDT, 7 minutes earlier.

Area forecast discussion, Apr 20, 8:05 PM EDT, 7 minutes before
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Hazardous weather outlook, Apr 20, 7:10 PM EDT, 1 hour 2 minutes before
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In the hours before

Special weather statement, Apr 20, 4:46 PM EDT, 3 hours 26 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE WAKEFIELD VA
446 PM EDT SUN APR 20 2008

NCZ012-VAZ079-087-202130-
BRUNSWICK VA-GREENSVILLE VA-NORTHAMPTON NC-
446 PM EDT SUN APR 20 2008

...STRONG THUNDERSTORM MOVING INTO THE WESTERN PORTIONS OF
NORTHAMPTON COUNTY...

AT 446 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM 21 MILES SOUTH OF LAWRENCEVILLE...OR ABOUT 7
MILES WEST OF ROANOKE RAPIDS...MOVING NORTH AT 24 MPH. THE STRONG
THUNDERSTORM WILL BE NEAR HENRICO...AND...GUM FORKS AT 455 PM EDT...
BARLEY...AND...VALENTINES AT 500 PM EDT...TRIPLET AT 505 PM EDT...
ANTE AT 520 PM EDT.

WIND GUSTS TO 45 MPH ARE POSSIBLE WITH THESE STORMS.

EXPECT FREQUENT CLOUD TO GROUND LIGHTNING AND HEAVY RAINFALL WITH
THESE STORMS. PONDING OF WATER ON ROADWAYS AND FLOODING OF LOW LYING
AND FLOOD PRONE AREAS IS ALSO POSSIBLE. IF YOU HEAR THUNDER...YOU ARE
CLOSE ENOUGH TO BE STRUCK BY LIGHTNING. MOVE INTO A SAFE SHELTER
BEFORE THESE STORMS REACH YOUR AREA. REMAIN INDOORS UNTIL THE STORMS
HAVE PASSED.

MCNATT
Special weather statement, Apr 20, 5:04 PM EDT, 3 hours 8 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE WAKEFIELD VA
504 PM EDT SUN APR 20 2008

VAZ088-089-092-093-202200-
ISLE OF WIGHT VA-SOUTHAMPTON VA-SURRY VA-SUSSEX VA-
504 PM EDT SUN APR 20 2008

...STRONG THUNDERSTORMS MOVING THROUGH SOUTHEAST VIRGINIA...

AT 504 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM FROM 12 MILES NORTHWEST OF COURTLAND TO 6 MILES
SOUTHWEST OF COURTLAND...MOVING NORTHEAST AT 15 MPH. THE STRONG
THUNDERSTORMS WILL BE NEAR
  COURTLAND AROUND 525 PM EDT...
  FRANKLIN AROUND 530 PM EDT...

WIND GUSTS TO 45 MPH...AND SMALL HAIL WILL BE POSSIBLE WITH THESE
STORMS.

EXPECT FREQUENT CLOUD TO GROUND LIGHTNING AND HEAVY RAINFALL WITH
THESE STORMS. PONDING OF WATER ON ROADWAYS AND FLOODING OF LOW LYING
AND FLOOD PRONE AREAS IS ALSO POSSIBLE. IF YOU HEAR THUNDER...YOU ARE
CLOSE ENOUGH TO BE STRUCK BY LIGHTNING. MOVE INTO A SAFE SHELTER
BEFORE THESE STORMS REACH YOUR AREA. REMAIN INDOORS UNTIL THE STORMS
HAVE PASSED.

BROWN
Local storm report, Apr 20, 5:32 PM EDT, 2 hours 40 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE WAKEFIELD VA
532 PM EDT SUN APR 20 2008

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

0445 PM     TSTM WND DMG     1 W SPARTA              37.99N 77.25W
04/20/2008                   CAROLINE           VA   PUBLIC

            BARN DAMAGE WITH MULTIPLE TREES DOWN. POSSIBLE TORNADO.

&&

BJACKSON
Special weather statement, Apr 20, 5:35 PM EDT, 2 hours 37 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE WAKEFIELD VA
535 PM EDT SUN APR 20 2008

VAZ063-071>073-082-083-202215-
CHARLES CITY VA-HANOVER VA-HENRICO VA-KING AND QUEEN VA-KING WILLIAM
VA-NEW KENT VA-
535 PM EDT SUN APR 20 2008

...STRONG THUNDERSTORM MOVING INTO WESTERN NEW KENT COUNTY...

AT 535 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM OVER ROXBURY...MOVING NORTH AT 24 MPH. THE STRONG
THUNDERSTORMS WILL BE NEAR QUINTON...AND...BROWNS CORNER AT 540 PM
EDT...TUNSTALL...AND...WESTWOOD AT 555 PM EDT...PALLS AT 600 PM
EDT...MANQUIN AT 610 PM EDT...CENTRAL GARAGE...AND...RUMFORD AT 615
PM EDT.

WIND GUSTS TO 45 MPH AND FREQUENT CLOUD TO GROUND LIGHTNING ARE
EXPECTED IN THE PATH OF THESE STORMS. IF YOU HEAR THUNDER...YOU ARE
CLOSE ENOUGH TO BE STRUCK BY LIGHTNING. MOVE INTO A SAFE SHELTER
BEFORE THESE STORMS REACH YOUR AREA. REMAIN INDOORS UNTIL THE STORMS
HAVE PASSED.

MCNATT
Special weather statement, Apr 20, 6:37 PM EDT, 1 hour 35 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE WAKEFIELD VA
637 PM EDT SUN APR 20 2008

NCZ012-202330-
NORTHAMPTON NC-
637 PM EDT SUN APR 20 2008

...STRONG THUNDERSTORM MOVING INTO EASTERN NORTHAMPTON COUNTY...

AT 637 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM 7 MILES WEST OF RICH SQUARE...MOVING NORTH AT 24
MPH. THE STRONG THUNDERSTORMS WILL BE NEAR JACKSON AT 650 PM EDT...
PLEASANT GROVE AT 700 PM EDT...SEABOARD...AND...GUMBERRY AT 705 PM
EDT...MARGARETTSVILLE AT 715 PM EDT.

WIND GUSTS TO 45 MPH AND FREQUENT CLOUD TO GROUND LIGHTNING ARE
EXPECTED IN THE PATH OF THESE STORMS. IF YOU HEAR THUNDER...YOU ARE
CLOSE ENOUGH TO BE STRUCK BY LIGHTNING. MOVE INTO A SAFE SHELTER
BEFORE THESE STORMS REACH YOUR AREA. REMAIN INDOORS UNTIL THE STORMS
HAVE PASSED.

RAINFALL RATES OF ONE TO TWO INCHES PER HOUR WILL CAUSE PONDING OF
WATER ON ROADWAYS...AND POSSIBLE LOCALIZED FLOODING IN LOW LYING AND
FLOOD PRONE AREAS.

MCNATT
Local storm report, Apr 20, 6:52 PM EDT, 1 hour 20 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Apr 21, 12:08 AM EDTFlash Flood WatchAKQBrunswick, Charles City, Dinwiddie, Greensville, James City, Prince George and 10 more20 hr
Apr 21, 4:24 AM EDTCoastal Flood StatementAKQAccomack, Gloucester, Lancaster, Mathews, Middlesex, Northampton and 4 more20 hr
Apr 21, 10:36 AM EDTFlash Flood WarningAKQIsle of Wight, Southampton, City of Chesapeake, City of Norfolk, City of Portsmouth, City of Suffolk and 1 more9 hr
Apr 21, 1:05 PM EDTAreal Flood AdvisoryAKQCharles City, Chesterfield, Hanover, Henrico, James City, King William and 12 more6 hr
Apr 21, 3:11 PM EDTAreal Flood AdvisoryAKQEssex, Gloucester, King and Queen, King William, Mathews, Middlesex and 1 more6 hr
Apr 21, 9:06 AM EDTAreal Flood AdvisoryAKQCamden, Gates, Pasquotank, Perquimans3 hr

Nearby

Severe Thunderstorm Warnings in North Carolina, 2008Every severe thunderstorm warning in 2008

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.