Tornado Watch
TORNADO WATCH 338 REMAINS IN EFFECT UNTIL 200 AM EDT FOR THE
FOLLOWING LOCATIONS
MDC003-005-009-011-013-015-017-019-021-025-027-029-031-033-035-
037-039-041-045-047-510-020600-
/O.CON.KWNS.TO.A.0338.000000T0000Z-120602T0600Z/
MD
. MARYLAND COUNTIES INCLUDED ARE
ANNE ARUNDEL BALTIMORE CALVERT
CAROLINE CARROLL CECIL
CHARLES DORCHESTER FREDERICK
HARFORD HOWARD KENT
MONTGOMERY PRINCE GEORGES QUEEN ANNE'S
ST. MARYS SOMERSET TALBOT
WICOMICO WORCESTER
MARYLAND INDEPENDENT CITIES INCLUDED ARE
BALTIMORE CITY
Flash Flood Watch
DCZ001-MDZ004>007-009>011-013-VAZ042-052>054-020400-
/O.CON.KLWX.FF.A.0004.000000T0000Z-120602T0400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
DISTRICT OF COLUMBIA-FREDERICK MD-CARROLL-NORTHERN BALTIMORE-
HARFORD-MONTGOMERY-HOWARD-SOUTHERN BALTIMORE-PRINCE GEORGES-
LOUDOUN-PRINCE WILLIAM/MANASSAS/MANASSAS PARK-FAIRFAX-
ARLINGTON/FALLS CHURCH/ALEXANDRIA-
INCLUDING THE CITIES OF...WASHINGTON...FREDERICK...WESTMINSTER...
GAITHERSBURG...COLUMBIA...BALTIMORE...LEESBURG...MANASSAS...
MANASSAS PARK...FAIRFAX...ALEXANDRIA...FALLS CHURCH
930 PM EDT FRI JUN 1 2012
...FLASH FLOOD WATCH REMAINS IN EFFECT UNTIL MIDNIGHT EDT
TONIGHT...
THE FLASH FLOOD WATCH CONTINUES FOR
* PORTIONS OF MARYLAND...THE DISTRICT OF COLUMBIA AND NORTHERN
VIRGINIA...INCLUDING THE FOLLOWING AREAS...IN MARYLAND...
CARROLL...FREDERICK MD...HARFORD...HOWARD...MONTGOMERY...
NORTHERN BALTIMORE...PRINCE GEORGES AND SOUTHERN BALTIMORE.
THE DISTRICT OF COLUMBIA. IN NORTHERN VIRGINIA...
ARLINGTON/FALLS CHURCH/ALEXANDRIA...FAIRFAX...LOUDOUN AND
PRINCE WILLIAM/MANASSAS/MANASSAS PARK.
* UNTIL MIDNIGHT EDT TONIGHT
* THUNDERSTORMS WILL IMPACT THE REGION THROUGH THE EVENING.
WIDESPREAD 1 TO 3 INCHES OF RAINFALL IS EXPECTED...WITH
ISOLATED AMOUNTS OF OVER 5 INCHES.
* FLASH FLOODING MAY RESULT FROM RAINFALL AMOUNTS OF THIS
MAGNITUDE...PARTICULARLY IN AREAS THAT HAVE HAD RECENT
SIGNIFICANT RAINFALL AS WELL AS URBAN AREAS.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A FLASH FLOOD WATCH MEANS THAT CONDITIONS MAY DEVELOP THAT LEAD
TO FLASH FLOODING. FLASH FLOODING IS A VERY DANGEROUS SITUATION.
YOU SHOULD MONITOR LATER FORECASTS AND BE PREPARED TO TAKE ACTION
SHOULD FLASH FLOOD WARNINGS BE ISSUED.
&&
Flood Warning
910 PM EDT FRI JUN 1 2012
THE NATIONAL WEATHER SERVICE IN STERLING VIRGINIA HAS ISSUED A
* FLOOD WARNING FOR URBAN AREAS AND SMALL STREAMS IN...
HOWARD COUNTY IN CENTRAL MARYLAND
MONTGOMERY COUNTY IN CENTRAL MARYLAND
CARROLL COUNTY IN NORTH CENTRAL MARYLAND
FREDERICK COUNTY IN NORTH CENTRAL MARYLAND
* UNTIL 315 AM EDT SATURDAY
* AT 908 PM EDT...A BAND OF THUNDERSTORMS WAS MOVING ACROSS NORTHERN
MARYLAND. A NUMBER OF ROADWAYS ARE CLOSED DUE TO FLOODING...AND
ADDITIONAL RAINFALL OF 1 TO 2 INCHES WILL CONTINUE TO CAUSE
FLOODING. RAPID RISES IN FLOODWATERS ARE NO LONGER EXPECTED...SO
THIS FLOOD WARNING REPLACES THE EARLIER FLASH FLOOD WARNING.
A FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR HAS BEEN REPORTED.
STREAM RISES WILL BE SLOW AND FLASH FLOODING IS NOT EXPECTED.
HOWEVER...ALL INTERESTED PARTIES SHOULD TAKE NECESSARY PRECAUTIONS
IMMEDIATELY.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
MOST FLOOD DEATHS OCCUR IN AUTOMOBILES. NEVER DRIVE YOUR VEHICLE INTO
AREAS WHERE THE WATER COVERS THE ROADWAY. FLOOD WATERS ARE USUALLY
DEEPER THAN THEY APPEAR. JUST ONE FOOT OF FLOWING WATER IS POWERFUL
ENOUGH TO SWEEP VEHICLES OFF THE ROAD. WHEN ENCOUNTERING FLOODED ROADS
MAKE THE SMART CHOICE...TURN AROUND...DONT DROWN.
EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...HIGHWAYS AND UNDERPASSES. ADDITIONALLY...COUNTRY
ROADS AND FARMLANDS ALONG THE BANKS OF CREEKS...STREAMS AND OTHER LOW
LYING AREAS ARE SUBJECT TO FLOODING.
&&
LAT...LON 3909 7713 3937 7764 3973 7745 3973 7680
Air Quality Index
426 PM EDT FRI JUN 1 2012
THE FORECAST SATURDAY FOR THE DC METRO AREA IS CODE LEVEL
GREEN...WHICH IS GOOD...AND MEANS LITTLE OR NO HEALTH RISK.
PRIMARY POLLUTANT WILL BE OZONE.
FOR MORE INFORMATION ON GROUND-LEVEL OZONE AND FINE
PARTICLES...VISIT WWW.CLEANAIRPARTNERS.NET.
Hazardous Weather Outlook
934 PM EDT FRI JUN 1 2012
THIS HAZARDOUS WEATHER OUTLOOK IS FOR EASTERN WEST VIRGINIA...
NORTHERN AND CENTRAL VIRGINIA...AND CENTRAL AND WESTERN MARYLAND
WITH THE EXCEPTION OF GARRETT COUNTY.
.DAY ONE...TONIGHT
A TORNADO WATCH IS IN EFFECT FOR LOUDOUN...MONTGOMERY...FREDERICK
MARYLAND...CARROLL...AND HOWARD COUNTIES UNTIL 200 AM EDT.
THUNDERSTORMS WILL BE CAPABLE OF PRODUCING DAMAGING WIND
GUSTS...LARGE HAIL AND TORNADOES. HEAVY RAINFALL COULD ALSO LEAD
TO FLASH FLOODING.
A FLASH FLOOD WATCH IS IN EFFECT UNTIL MIDNIGHT EDT FOR
LOUDOUN...MONTGOMERY...FREDERICK MARYLAND...CARROLL...AND HOWARD COUNTIES.
.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY
NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.
.SPOTTER INFORMATION STATEMENT...
SPOTTERS HAVE BEEN ACTIVATED. PLEASE RELAY ALL SEVERE WEATHER AND FLOOD
REPORTS TO YOU LOCAL NATIONAL WEATHER SERVICE.
Heavy Rain
