Alert archive / Virginia / Severe Thunderstorm Warnings in 2007

Severe Thunderstorm Warning 13, NWS Baltimore/Washington

May 16, 2007Fairfax County, City of Fairfax, City of Falls Church, Virginia

NWS Baltimore/Washington issued this severe thunderstorm warning at May 16, 2007, 3:55 PM EDT for Fairfax County, City of Fairfax, City of Falls Church, Virginia. It was in force for 38 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: May 16, 2007, 3:55 PM EDT (19:55 UTC)
Expired: May 16, 2007, 4:33 PM EDT
In force: 38 min
Issued by: NWS Baltimore/Washington
Area: Counties, with a storm outline in the text

Counties City of Fairfax, VA, City of Falls Church, VA, Fairfax County, VA

The radar

The Sterling radar (KLWX), 18 km from the middle of the area, began a volume at 19:56 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.

What was reported inside it

Time	Report	Where	Remark
May 16, 4:05 PM EDT	TSTM WND DMG	Fairfax, VA	TREE DOWNED

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

Did it verify

Verified. The Iowa Environmental Mesonet's Cow matched one storm report to this severe thunderstorm warning; the first came 10 minutes after it went out.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The watch it was issued in

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

Issued	Product	Office	Lasted
May 16, 1:26 PM EDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Washington/Dulle, VA (KIAD), launched 12:00Z, 7.9 hours before the alert went out and 10 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 25 J/kg
Mixed-layer CIN: -213 J/kg
Mixed-layer LCL: 1324 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: 135 m²/s²
0-3 km storm-relative helicity: 160 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WUUS51 KLWX 161955
SVRLWX
VAC059-600-610-162045-
/O.NEW.KLWX.SV.W.0013.070516T1955Z-070516T2045Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
355 PM EDT WED MAY 16 2007

THE NATIONAL WEATHER SERVICE IN STERLING VIRGINIA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CITY OF FAIRFAX IN NORTHERN VIRGINIA
  CITY OF FALLS CHURCH IN NORTHERN VIRGINIA
  FAIRFAX COUNTY IN NORTHERN VIRGINIA

* UNTIL 445 PM EDT

* AT 351 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM.  THIS STORM WAS LOCATED 6 MILES SOUTHWEST OF
  CENTREVILLE...AND MOVING NORTHEAST AT 50 MPH.

* LOCATIONS IMPACTED INCLUDE...
  CHANTILLY...
  CENTREVILLE...
  HERNDON...
  OAKTON...
  RESTON...
  WOLF TRAP...
  VIENNA...
  GREAT FALLS...
  THE AMERICAN LEGION BRIDGE...
  DULLES INTERNATIONAL AIRPORT...
  TYSONS CORNER...
  FAIRFAX...

HAIL TO THE SIZE OF PENNIES AND WIND GUSTS TO 60 MPH CAN BE EXPECTED
IN THE WARNED AREA. STAY INDOORS AND AWAY FROM WINDOWS UNTIL THE
STORM HAS PASSED.

BE ALERT FOR RAPIDLY CHANGING WEATHER CONDITIONS AS STORMS APPROACH.

LAT...LON 3886 7753 3876 7740 3887 7716 3890 7717
      3893 7712 3896 7715 3898 7725 3902 7725
      3906 7733

$$
MANNING

3 follow-up statements

000 
WWUS51 KLWX 162008
SVSLWX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
408 PM EDT WED MAY 16 2007

VAC059-600-610-162045-
/O.CON.KLWX.SV.W.0013.000000T0000Z-070516T2045Z/
CITY OF FAIRFAX VA-CITY OF FALLS CHURCH VA-FAIRFAX VA-
408 PM EDT WED MAY 16 2007

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 445 PM EDT
FOR CITY OF FAIRFAX...CITY OF FALLS CHURCH...FAIRFAX COUNTY...

AT 406 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING PENNY SIZE
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS
LOCATED 3 MILES SOUTH OF RESTON...MOVING NORTHEAST AT 50 MPH.

THE SEVERE THUNDERSTORM WILL BE NEAR THE AMERICAN LEGION BRIDGE... 
GREAT FALLS...RESTON...HERNDON AND MCLEAN THROUGH 445 PM EDT.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 800 PM EDT.

LAT...LON 3890 7747 3884 7737 3888 7718 3890 7718
      3893 7712 3896 7715 3898 7725 3902 7725
      3906 7733

$$
MANNING

000 
WWUS51 KLWX 162016
SVSLWX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
415 PM EDT WED MAY 16 2007

VAC600-610-162025-
/O.CAN.KLWX.SV.W.0013.000000T0000Z-070516T2045Z/
CITY OF FAIRFAX VA-CITY OF FALLS CHURCH VA-
415 PM EDT WED MAY 16 2007

...THE SEVERE THUNDERSTORM WARNING FOR THE CITY OF FAIRFAX...CITY OF 
FALLS CHURCH IS CANCELLED...

THE STRONGEST STORMS HAVE MOVED AWAY FROM FAIRFAX AND FALLS CHURCH 
CITIES THEREFORE THE WARNING HAS BEEN CANCELLED.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 800 PM EDT.

LAT...LON 3893 7738 3889 7730 3890 7723 3892 7719
      3894 7717 3896 7717 3898 7725 3902 7725
      3905 7731

$$

VAC059-162045-
/O.CON.KLWX.SV.W.0013.000000T0000Z-070516T2045Z/
FAIRFAX VA-
415 PM EDT WED MAY 16 2007

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 445 PM EDT
FOR FAIRFAX COUNTY...

AT 411 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING PENNY SIZE
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS
LOCATED OVER WOLF TRAP...MOVING NORTHEAST AT 50 MPH.

MCLEAN...TYSONS AND GREAT FALLS WILL BE AFFECTED THROUGH 445 PM EDT.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 800 PM EDT.

LAT...LON 3893 7738 3889 7730 3890 7723 3892 7719
      3894 7717 3896 7717 3898 7725 3902 7725
      3905 7731

$$
MANNING

000 
WWUS51 KLWX 162033
SVSLWX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
433 PM EDT WED MAY 16 2007

VAC059-162043-
/O.CAN.KLWX.SV.W.0013.000000T0000Z-070516T2045Z/
FAIRFAX VA-
433 PM EDT WED MAY 16 2007

...THE SEVERE THUNDERSTORM WARNING FOR FAIRFAX COUNTY IS CANCELLED...

THE SEVERE THUNDERSTORM HAS MOVED OUT OF THE WARNED AREA...THEREFORE
THE SEVERE THUNDERSTORM WARNING HAS BEEN CANCELLED.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 800 PM.

LAT...LON 3893 7738 3889 7730 3890 7723 3892 7719
      3894 7717 3896 7717 3898 7725 3902 7725
      3905 7731

$$
MANNING

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 Baltimore/Washington wrote its last area forecast discussion before this severe thunderstorm warning went out at May 16, 2:40 PM EDT, 1 hour 15 minutes earlier.

Area forecast discussion, May 16, 2:40 PM EDT, 1 hour 15 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
240 PM EDT WED MAY 16 2007

.SYNOPSIS...
COLD FRONT INTO GARRETT COUNTY WILL MOVE E OF THE APLCHNS THIS
AFTN...REACHING CHES BAY THIS EVE. AN UPPER LEVEL DISTURBANCE WILL
PROVIDE COOL TEMPERATURES AND A CHANCE OF SHOWERS THROUGH FRIDAY.
HIGH PRESSURE WILL BUILD OVER THE REGION EARLY NEXT WEEK...BRINGING
WARMER AND DRIER CONDITIONS.

&&

.NEAR TERM /UNTIL 8 PM THIS EVENING/...
SVR TSTM WATCH 278 IN EFFECT. 18Z SNDG IN SYSTEM.

CD FNT MOVG FORWARD ON SCHEDULE. BEST CHC OF SVR WX IS DAMAGING WINDS.
SVR CHC WL BE ENDING THIS EVE.

&&

.SHORT TERM /8 PM THIS EVENING THROUGH 6 AM THURSDAY/...WINDS WILL
SHIFT TO THE NW AFTER THE FRONT...XPCTG WINDS TO DIMINISH ARND MDNGT.
SKIES WILL ALSO CLEAR...MORE SLOWLY ON THE UPSLOPE SIDE OF THE APLCNS.

COLD FRONT IS EAST OF THE FORECAST AREA BY THURSDAY MORNING. AN
UPPER LOW IS OVER EASTERN MICHIGAN...WITH THE TROUGH AXIS EXTENDING
SOUTHWEST INTO ARKANSAS. AS UPPER TROUGH AND ASSOCIATED VORTICITY
MAKE THEIR WAY EAST...PRECIPITATION CHANCES WILL MAKE THEIR WAY BACK
INTO THE FORECAST.

&&

.LONG TERM /THURSDAY THROUGH WEDNESDAY/...

COLD FRONT EXTENDING ALONG THE EASTERN SEABOARD WILL PUSH SLOWLY
EAST INTO THE ATLC AND BECOME STATIONARY AS DEVELOPING SFC LOW RACES
NORTH ALONG IT.  AN UPPER LOW OVER NW PENNSYLVANIA THU EVENING WILL
ROTATE THROUGH THE CWA FRI NIGHT.  GFS AND NAM BEGIN TO DIVERGE AT
THIS POINT WITH GFS H5 LOW LIFTING INTO SOUTHERN NEW ENGLAND BY SAT
AFTERNOON WHILE NAM DRIVES CLOSED LOW TO THE VA/NC COAST.  AS A
RESULT...NAM SFC LOW OFF THE NJ COAST SAT AFTERNOON AND GFS LOW OF
SIMILAR INTENSITY OVER NORTHERN NORTHERN NEW ENGLAND.  I HAVE SAME
CONCERNS AS HPC THAT IF SYSTEM AMPLIFIES SHARPLY EARLY AND IS ABLE
TO SEPARATE FROM THE MAIN WESTERLY FLOW...THE SUBTROPICAL
INTERACTION COULD BE MAXIMIZED AND ALLOW THE VORTEX TO DEEPEN AND
REMAIN CUT OFF FARTHER S AND LONGER...POSING A GREATER THREAT TO THE
ERN SEABOARD.  THUS WILL FAVOR SOLN CLOSER TO NAM.

WILL INTRODUCE CHC SHOWERS THU NIGHT AS UPPER TROF AND ASSOCIATED
PVA MAX ROTATES THROUGH CWA AND CONTINUE THREAT ON FRI. USED A TONED
DOWN VERSION OF HIER GMOS POP VALUES.  A LITTLE LESS CERTAIN OF PCPN
FRI NIGHT AS IT DEPENDS ON POSITION OF LOW...BUT HAVE KEPT A SLIGHT
CHC FOR REGION WITH HIGHEST VALUES NORTHEAST.

UNCERTAIN OF LOW POSITION LATER IN THE WEEKEND.  PRELIMINARY
INDICATIONS ARE THAT ANOTHER COLD FRONT WILL SWING AROUND SYSTEM AND
PASS THROUGH THE MID ATLC REGION SUN AFTERNOON.  PCPN LOOK MINIMAL.
KEPT HPC GUIDE INDICATING SLIGHT CHC POPS NORTH AND EAST.  HIGH PRES
WILL BUILD DOWN OUT OF CANADA BEHIND THE FRONT AND SLIDE OFF ATLC
COAST BY MIDWEEK.  CONDITIONS EXPECTED TO BE DRY WITH MAX TEMPS NEAR
NORMAL IN THE MID 70S.

&&

.AVIATION /19Z WEDNESDAY THROUGH MONDAY/...
TSTMS BIGGEST PROB IN THE FCST AREA THRU 01Z. WINDS TURNING NW
BEHIND IT...ALTHO NOT PROBLEMATIC BEHIND FNT.

VFR WX EXPECTED THROUGH THE WEEKEND.

&&

.MARINE...
SMALL CRAFT CONDITIONS AHEAD OF THE COLD FRONT WILL CONTINUE THROUGH
THE DAY TODAY...THEN FOR THE RMDR OF EVE HRS IN PRES SURGE BEHIND CD
FNTL PASSAGE. WINDS DYING DOWN AFTR MDNGT.

NEAR SCA CONDITIONS MAY DEVELOP FRI AFTERNOON AND CONTINUE INTO SAT
AS DEEPENING LOW PRESSURE MOVES NORTH ALONG THE EASTERN SEABOARD.
WINDSPEEDS AND EXACT DIRECTION OF NORTHERLY WIND COMPONENT WILL BE
DEPENDENT UPON TRACK AND SPEED OF SYSTEM.

&&

.LWX WATCHES/WARNINGS/ADVISORIES...
DC...NONE.
MD...NONE.
VA...NONE.
WV...NONE.
MARINE...SMALL CRAFT ADVISORY UNTIL 2 AM EDT THURSDAY FOR ANZ530>537.

&&

Hazardous weather outlook, May 16, 11:16 AM EDT, 4 hours 39 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
1116 AM EDT WED MAY 16 2007

ANZ530>537-DCZ001-MDZ003>007-009>011-013-014-016>018-501-502-
VAZ021-025>031-036>042-050>057-WVZ050>055-501>504-171100-
CHESAPEAKE BAY NORTH OF POOLES ISLAND MD-
CHESAPEAKE BAY FROM POOLES ISLAND TO SANDY POINT MD-
CHESAPEAKE BAY FROM SANDY POINT TO NORTH BEACH MD-
CHESAPEAKE BAY FROM NORTH BEACH TO DRUM POINT MD-
CHESAPEAKE BAY FROM DRUM POINT MD TO SMITH POINT VA-
TIDAL POTOMAC FROM KEY BRIDGE TO INDIAN HEAD MD-
TIDAL POTOMAC FROM INDIAN HEAD TO COBB ISLAND MD-
TIDAL POTOMAC FROM COBB ISLAND MD TO SMITH POINT VA-
DISTRICT OF COLUMBIA-WASHINGTON-FREDERICK MD-CARROLL-
NORTHERN BALTIMORE-HARFORD-MONTGOMERY-HOWARD-SOUTHERN BALTIMORE-
PRINCE GEORGES-ANNE ARUNDEL-CHARLES-ST. MARYS-CALVERT-
EXTREME WESTERN ALLEGANY-CENTRAL AND EASTERN ALLEGANY-HIGHLAND-
AUGUSTA-ROCKINGHAM-SHENANDOAH-FREDERICK VA-PAGE-WARREN-CLARKE-
NELSON-ALBEMARLE-GREENE-MADISON-RAPPAHANNOCK-FAUQUIER-LOUDOUN-
ORANGE-CULPEPER-PRINCE WILLIAM/MANASSAS/MANASSAS PARK-FAIRFAX-
ARLINGTON/FALLS CHURCH/ALEXANDRIA-STAFFORD-SPOTSYLVANIA-
KING GEORGE-HAMPSHIRE-MORGAN-BERKELEY-JEFFERSON-PENDLETON-HARDY-
WESTERN GRANT-EASTERN GRANT-WESTERN MINERAL-EASTERN MINERAL-
1116 AM EDT WED MAY 16 2007

THIS HAZARDOUS WEATHER OUTLOOK IS FOR MARYLAND WEST OF THE
EASTERN SHORE INCLUDING THE CHESAPEAKE BAY AND EAST OF GARRETT
COUNTY...EASTERN WEST VIRGINIA...NORTHERN AND CENTRAL VIRGINIA...
WASHINGTON DC AND THE TIDAL POTOMAC RIVER.

.DAY ONE...THIS AFTERNOON AND TONIGHT

THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS THIS AFTERNOON AND
EVENING FOR AREAS EAST OF THE APPALACHIANS IN VIRGINIA...CENTRAL
MARYLAND...THE DISTRICT OF COLUMBIA...AND THE CHESAPEAKE BAY AND
TIDAL POTOMAC. THE BEST CHANCE FOR SEVERE WEATHER IS BETWEEN 3 PM
AND 8 PM. DAMAGING WINDS ARE THE PRIMARY THREAT.

A SMALL CRAFT ADVISORY REMAINS IN EFFECT FOR THE MARYLAND
CHESAPEAKE BAY AND TIDAL POTOMAC UNTIL THIS EVENING.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

SMALL CRAFT ADVISORY CONDITIONS ARE POSSIBLE ON FRIDAY FOR THE
TIDAL POTOMAC AND MARYLAND PORTION OF THE CHESAPEAKE BAY.

.SPOTTER INFORMATION STATEMENT...

SKYWARN ACTIVATION IS POSSIBLE TODAY.

In the hours before

Local storm report, May 16, 2:41 PM EDT, 1 hour 14 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
241 PM EDT WED MAY 16 2007

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

0232 PM     TSTM WND DMG     FREELAND                39.70N 76.68W
05/16/2007                   BALTIMORE          MD   COUNTY OFFICIAL

            TREE DOWN ON TRAILER ON SPOOKS FILL ROAD

&&

RDH

Local storm report, May 16, 2:58 PM EDT, 57 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
258 PM EDT WED MAY 16 2007

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

0235 PM     TSTM WND DMG     NORRISVILLE             39.70N 76.54W
05/16/2007                   HARFORD            MD   COUNTY OFFICIAL

            TREES DOWN

&&

RDH

Special weather statement, May 16, 3:21 PM EDT, 34 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
321 PM EDT WED MAY 16 2007

VAZ041-161945-
FAUQUIER VA-
321 PM EDT WED MAY 16 2007

...STRONG THUNDERSTORMS TO AFFECT FAUQUIER COUNTY...

AT 321 PM EDT...DOPPLER RADAR INDICATED A STRONG THUNDERSTORM 9 MILES
SOUTHWEST OF TURNBULL...MOVING NORTHEAST AT 45 MPH.

THIS STORM WILL BE CAPABLE OF PRODUCING SMALL HAIL AND WIND GUSTS TO
40 MPH.

THE COMMUNITIES OF BEALETON AND WARRENTON WILL BE AFFECTED BY THIS
STORM.

RESIDENTS IN THESE AREAS SHOULD REMAIN ALERT IN CASE WARNINGS ARE
ISSUED.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 800 PM EDT.

MANNING

Special weather statement, May 16, 3:30 PM EDT, 25 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
330 PM EDT WED MAY 16 2007

DCZ001-MDZ005>007-009>011-013-014-016-VAZ041-050>055-162030-
DISTRICT OF COLUMBIA DC-CARROLL MD-NORTHERN BALTIMORE MD-HOWARD MD-
MONTGOMERY MD-ANNE ARUNDEL MD-PRINCE GEORGES MD-ORANGE VA-STAFFORD VA-
CULPEPER VA-FAUQUIER VA-HARFORD MD-SOUTHERN BALTIMORE MD-CHARLES MD-
PRINCE WILLIAM/MANASSAS/MANASSAS PARK VA-
ARLINGTON/FALLS CHURCH/ALEXANDRIA VA-FAIRFAX VA-
330 PM EDT WED MAY 16 2007

...STRONG THUNDERSTORMS TO AFFECT THE BALTIMORE WASHINGTON METRO
CORRIDOR...

AT 330 PM EDT...DOPPLER RADAR INDICATED A DEVELOPING LING OF STRONG
THUNDERSTORMS FROM NORTHERN BALTIMORE TO WESTERN PRINCE WILLIAM
COUNTIES...MOVING NORTHEAST AT 40 MPH.

THESE STORMS WILL BE CAPABLE OF PRODUCING TORRENTIAL RAINFALL...
SMALL HAIL AND WIND GUSTS TO 50 MPH.

THESE THUNDERSTORMS WILL AFFECT THE WESTERN SUBURBS THROUGH 4 PM...
REACH THE INTERSTATE 95 CORRIDOR AROUND 4:30 PM...AND MOVE INTO THE
EASTERN SUBURBS TOWARD 5 PM.

MOTORISTS SHOULD BE PREPARED FOR ADVERSE CONDITIONS...AND USE
CAUTION WHILE DRIVING. RESIDENTS IN THESE AREAS SHOULD REMAIN ALERT
IN CASE WARNINGS ARE ISSUED.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 800 PM EDT.

HTS

Special weather statement, May 16, 3:41 PM EDT, 14 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
341 PM EDT WED MAY 16 2007

VAZ052-162015-
PRINCE WILLIAM/MANASSAS/MANASSAS PARK VA-
341 PM EDT WED MAY 16 2007

...STRONG THUNDERSTORMS TO AFFECT PRINCE WILLIAM COUNTY...MANASSAS
AND MANASSAS PARK...

AT 341 PM EDT...DOPPLER RADAR INDICATED A STRONG THUNDERSTORM 6 MILES
SOUTHWEST OF GREENWICH...MOVING NORTHEAST AT 45 MPH.

THIS STORM WILL BE CAPABLE OF PRODUCING SMALL HAIL AND WIND GUSTS TO
40 MPH.

THE COMMUNITIES OF MANASSAS...MANASSAS PARK...HAYMARKET AND BULL RUN
WILL BE AFFECTED BY THIS STORM.

RESIDENTS IN THESE AREAS SHOULD REMAIN ALERT IN CASE WARNINGS ARE
ISSUED. A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 8 PM.

MANNING

Special weather statement, May 16, 3:43 PM EDT, 12 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
343 PM EDT WED MAY 16 2007

MDZ007-162015-
HARFORD MD-
343 PM EDT WED MAY 16 2007

...STRONG THUNDERSTORMS TO AFFECT HARFORD COUNTY...

AT 343 PM EDT...DOPPLER RADAR INDICATED A STRONG THUNDERSTORM 4 MILES
SOUTHWEST OF NORRISVILLE...MOVING NORTHEAST AT 40 MPH.

THIS STORM WILL BE CAPABLE OF PRODUCING SMALL HAIL AND WIND GUSTS TO
40 MPH.

THE COMMUNITIES OF ROCKS...CHROME HILL...PYLESVILLE...STREET...
NORRISVILLE... CARDIFF AND WHITEFORD WILL BE AFFECTED BY THIS STORM.

RESIDENTS IN THESE AREAS SHOULD REMAIN ALERT IN CASE WARNINGS ARE
ISSUED.

MANNING

The office that day

Everything else NWS Baltimore/Washington issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 16, 3:31 PM EDT	Severe Thunderstorm Warning	LWX	Fauquier	17 min
May 16, 3:50 PM EDT	Severe Thunderstorm Warning	LWX	Prince William, City of Manassas, City of Manassas Park	25 min
May 16, 4:00 PM EDT	Special Marine Warning	LWX		90 min
May 16, 4:40 PM EDT	Special Marine Warning	LWX		81 min
May 16, 4:59 PM EDT	Special Marine Warning	LWX		69 min
May 16, 5:25 PM EDT	Special Marine Warning	LWX		2 hr

Nearby

Severe Thunderstorm Warnings in Virginia, 2007 Every severe thunderstorm warning in 2007

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.