Severe Thunderstorm Warning
THE NATIONAL WEATHER SERVICE IN STERLING VIRGINIA HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
NORTHWESTERN FREDERICK COUNTY IN NORTH CENTRAL MARYLAND...
WASHINGTON COUNTY IN NORTH CENTRAL MARYLAND...
MORGAN COUNTY IN THE PANHANDLE OF WEST VIRGINIA...
NORTHEASTERN HAMPSHIRE COUNTY IN EASTERN WEST VIRGINIA...
NORTHERN BERKELEY COUNTY IN THE PANHANDLE OF WEST VIRGINIA...
EASTERN ALLEGANY COUNTY IN WESTERN MARYLAND...
* UNTIL 815 PM EDT
* AT 721 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS IN
EXCESS OF 60 MPH. THESE STORMS WERE LOCATED ALONG A LINE EXTENDING
FROM 18 MILES NORTH OF LONG MEADOW TO 19 MILES NORTHWEST OF FISHERS
BRIDGE...AND MOVING SOUTHEAST AT 35 MPH.
* LOCATIONS IMPACTED INCLUDE...
SLEEPY CREEK...
SPRUCE PINE HOLLOW...
SPOHRS CROSSROADS...
LARGENT...
VALLEY VIEW...
NEW HOPE...
JOHNSONS MILL...
ROCK GAP...
RIDGE...
HIGHLAND RIDGE...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE
IMMEDIATELY FOR DAMAGING WIND GUSTS AND FREQUENT CLOUD TO GROUND
LIGHTNING. MOVE INDOORS TO A STURDY BUILDING AND STAY AWAY FROM
WINDOWS.
&&
LAT...LON 3973 7747 3954 7732 3944 7831 3946 7834
3944 7835 3942 7854 3972 7880
TIME...MOT...LOC 2323Z 305DEG 30KT 3992 7761 3971 7859
Air Quality Index
425 PM EDT SUN MAY 27 2012
THE FORECAST MONDAY FOR THE DC METRO AREA IS CODE LEVEL
YELLOW...WHICH IS MODERATE...AND MEANS PEOPLE UNUSUALLY SENSITIVE
TO AIR POLLUTION MAY BE MILDLY AFFECTED. PRIMARY POLLUTANT
WILL BE OZONE.
FOR MORE INFORMATION ON GROUND-LEVEL OZONE AND FINE
PARTICLES...VISIT WWW.CLEANAIRPARTNERS.NET.
Air Quality Alert
425 PM EDT SAT MAY 26 2012
...AIR QUALITY ALERT IS IN EFFECT FOR SUNDAY MAY 27 2012...
THE METROPOLITAN WASHINGTON COUNCIL OF GOVERNMENTS IN ASSOCIATION
WITH MARYLAND DEPARTMENT OF THE ENVIRONMENT, VIRGINIA DEPARTMENT
OF ENVIRONMENTAL QUALITY, AND DISTRICT DEPARTMENT OF ENVIRONMENT
HAS ISSUED A CODE ORANGE AIR QUALITY ALERT SUNDAY FOR
THE DC METRO AREA.
A CODE ORANGE AIR QUALITY ALERT MEANS THAT AIR POLLUTION
CONCENTRATIONS WITHIN THE REGION MAY BECOME UNHEALTHY FOR SENSITIVE
GROUPS. SENSITIVE GROUPS INCLUDE CHILDREN...PEOPLE SUFFERING FROM
ASTHMA... HEART DISEASE OR OTHER LUNG DISEASES...AND THE ELDERLY.
THE EFFECTS OF AIR POLLUTION CAN BE MINIMIZED BY AVOIDING STRENUOUS
ACTIVITY OR EXERCISE OUTDOORS.
FOR MORE INFORMATION ON GROUND-LEVEL OZONE AND FINE
PARTICLES...VISIT WWW.CLEANAIRPARTNERS.NET.
Hazardous Weather Outlook
618 PM EDT SUN MAY 27 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 LINE OF THUNDERSTORMS ACROSS SOUTH-CENTRAL PENNSYLVANIA WILL
MOVE SOUTH TOWARD THE MASON-DIXON LINE THROUGH THE EARLY EVENING
HOURS. THERE IS A POTENTIAL FOR SEVERE THUNDERSTORMS ACROSS
PORTIONS OF WEST-CENTRAL AND WESTERN MARYLAND...AS WELL AS THE
EASTERN WEST VIRGINIA PANHANDLE OVER THE NEXT FEW HOURS. THE MAIN
THREAT IS FOR DAMAGING WINDS WITH A LESSER THREAT FOR LARGE HAIL.
.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY
TEMPERATURES ABOVE 90 DEGREES WITH HEAT INDICES IN THE MID 90S
ARE EXPECTED MONDAY AND TUESDAY...WITH MONDAY AS THE HOTTEST DAY.
PREPARE FOR THE HEAT IF YOU PLAN TO ATTEND OUTDOOR EVENTS. DRINK
PLENTY OF WATER AND DRESS IN LIGHTWEIGHT AND LOOSE FITTING
CLOTHES. GET INTO THE SHADE WHEN POSSIBLE AND LIMIT PHYSICAL
EXERTION IN THIS EARLY SEASON HEAT.
.SPOTTER INFORMATION STATEMENT...
SPOTTER ACTIVATION IS NOT ANTICIPATED AT THIS TIME.
Special Weather Statement
746 PM EDT SUN MAY 27 2012
...STRONG THUNDERSTORMS APPROACHING THE BALTIMORE METRO AREA...
AT 740 PM EDT...DOPPLER RADAR INDICATED STRONG THUNDERSTORMS ALONG A
LINE EXTENDING FROM 32 MILES NORTH OF MARYLAND LINE TO 15 MILES
NORTHWEST OF LINEBORO TO 4 MILES NORTHWEST OF EMMITSBURG...MOVING
SOUTHEAST AT 40 MPH.
THESE STRONG THUNDERSTORMS ARE EXPECTED TO AFFECT THE NORTHERN
BALTIMORE SUBURBS BETWEEN 800 PM AND 830 PM...AND THEN THE IMMEDIATE
BALTIMORE AREA BETWEEN 830 PM AND 900 PM.
LOCATIONS IMPACTED INCLUDE EMMITSBURG...HARNEY...ROCKY RIDGE...
DETOUR...TANEYTOWN...KEYSVILLE...NEW MIDWAY...LADIESBURG...KEYMAR AND
MIDDLEBURG.
HEAVY RAIN WITH THESE STORMS WILL REDUCE VISIBILITIES TO BELOW ONE
MILE AND MAY CAUSE PONDING OF WATER ON ROADWAYS.
WIND GUSTS IN EXCESS OF 50 MPH ARE EXPECTED WITH THESE STORMS. WINDS
THIS STRONG CAN BRING DOWN LARGE TREE BRANCHES. TAKE SHELTER UNTIL
THE STORMS HAVE PASSED.
&&
LAT...LON 3961 7612 3937 7636 3919 7687 3972 7749
3972 7623
TIME...MOT...LOC 2340Z 318DEG 33KT 4016 7669 3989 7696
3974 7736
Shortterm Forecast
737 PM EDT SUN MAY 27 2012
.NOW...
SHOWERS AND THUNDERSTORMS WILL CROSS THE MASON DIXON LINE AND
AFFECT WESTERN AND CENTRAL MARYLAND ALONG WITH THE EXTREME EASTERN
WEST VIRGINIA PANHANDLE THROUGH 9 PM. EXPECT HEAVY DOWNPOURS THAT
WILL DEPOSIT A QUICK INCH OR SO OF RAINFALL. STRONGER STORMS MAY
ALSO PRODUCE STRONG GUSTY WINDS AND SMALL HAIL.
Clear
