Dense Fog Advisory Until 0900

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
510 AM EDT MON JUL 6 2009

WASHINGTON-FREDERICK MD-CARROLL-CENTRAL AND EASTERN ALLEGANY-
ROCKINGHAM-SHENANDOAH-FREDERICK VA-PAGE-WARREN-CLARKE-GREENE-
MADISON-RAPPAHANNOCK-ORANGE-CULPEPER-HAMPSHIRE-MORGAN-BERKELEY-
JEFFERSON-PENDLETON-HARDY-EASTERN GRANT-EASTERN MINERAL-
INCLUDING THE CITIES OF...HAGERSTOWN...FREDERICK...WESTMINSTER...
CUMBERLAND...HARRISONBURG...WINCHESTER...FRONT ROYAL...
WASHINGTON...CULPEPER...MARTINSBURG...CHARLES TOWN...PETERSBURG...
KEYSER...FORT ASHBY
510 AM EDT MON JUL 6 2009

...DENSE FOG ADVISORY IN EFFECT UNTIL 9 AM EDT THIS MORNING...

THE NATIONAL WEATHER SERVICE IN STERLING VIRGINIA HAS ISSUED A
DENSE FOG ADVISORY...WHICH IS IN EFFECT UNTIL 9 AM EDT THIS
MORNING.

DENSE FOG HAS LOWERED VISIBILITIES TO BELOW ONE QUARTER MILE EARLY
THIS MORNING ACROSS PARTS OF CENTRAL MARYLAND...THE EASTERN WEST
VIRGINIA PANHANDLE...THE SHENANDOAH VALLEY...AND NORTHERN
VIRGINIA. THE DENSE FOG IS EXPECTED TO CONTINUE INTO THE MONDAY
MORNING COMMUTE BEFORE DISSIPATING DURING THE MID MORNING HOURS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A DENSE FOG ADVISORY MEANS VISIBILITIES WILL FREQUENTLY BE
REDUCED TO LESS THAN ONE QUARTER MILE. IF DRIVING...SLOW
DOWN...USE YOUR HEADLIGHTS...AND LEAVE PLENTY OF DISTANCE AHEAD OF
YOU.

June 2009 rainfall totals..

…For the month of June 2009, I have measured approx. 5.93”(*) of rain in my official CoCoRaHS/NOAA manual rain gauge.

Historically average amounts for Winchester in June is approx. 3.65”.

We managed to be ahead of the curve by 2.28”. Hopefully we can stave off any drought concerns!

*These are my, un-official totals…However my data is sent and used by the NOAA, NWS, Weatherbug, Weather Underground, Skywarn, CoCoRaHs and other hydrological publications for precipitation mapping, tracking and models.

Why does it feel “sticky” outside?

"Dew Point" . . . When it feels sticky outside, think about the Dew Point

"Dew point" is a term most of us have probably heard but the meaning may not be clear unless you've had some meteorology background. Dew point is a good way of quantifying the amount of water vapor in the atmosphere. It is a more meaningful term, in some respects, than "Relative Humidity" which we have heard talked about all our lives. Unlike relative humidity, dew point is a temperature. Specifically, is the temperature that you would need to cool the air to for the air to reach saturation (100% humidity). At that temperature, cloud droplets may begin to form, or dew will be deposited on surfaces in contact with the air. The higher the dew point, the more moisture is in the air. In Colorado, when the dew point gets higher than about 52 degrees F, we think it's really humid. But in the south, Midwest and East, you would think that air is really dry. You don't get excited until the dew point is over 65 or 70 degrees.

A good way to get an idea about how humid the air is to check for condensation on a glass of ice water. In the winter, you hardly ever get water on the outside of a glass (unless you're down by the Gulf of Mexico), but, when the dew point is high condensation on our glasses forms easily.

(courtesy of cocorahs.org)

Severe T storm Warning

THE NATIONAL WEATHER SERVICE IN STERLING VIRGINIA HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... NORTHWESTERN LOUDOUN COUNTY IN NORTHERN VIRGINIA... EASTERN CITY OF WINCHESTER IN NORTHWEST VIRGINIA... CLARKE COUNTY IN NORTHWEST VIRGINIA... SOUTHEASTERN FREDERICK COUNTY IN NORTHWEST VIRGINIA... SOUTH CENTRAL BERKELEY COUNTY IN THE PANHANDLE OF WEST VIRGINIA... JEFFERSON COUNTY IN THE PANHANDLE OF WEST VIRGINIA... * UNTIL 545 PM EDT

* AT 456 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM. THIS STORM WAS LOCATED 7 MILES SOUTHEAST OF STEPHENS CITY...AND MOVING NORTHEAST AT 20 MPH. * LOCATIONS IMPACTED INCLUDE... BERRYVILLE... CHARLES TOWN... RANSON...

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. LAT...LON 3930
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Special Weather Statement

MyWinchester.org Weather Station Alert
WWUS81 KLWX 270051
SPSLWX

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
851 PM EDT FRI JUN 26 2009

VAZ028-WVZ051-052-270130-
BERKELEY WV-MORGAN WV-FREDERICK VA-
851 PM EDT FRI JUN 26 2009

..STRONG THUNDERSTORMS TO AFFECT BERKELEY...MORGAN AND FREDERICK
COUNTIES...

AT 851 PM EDT...DOPPLER RADAR INDICATED A STRONG THUNDERSTORM 2 MILES
EAST OF STOTLERS CROSSROADS...MOVING SOUTHEAST AT 25 MPH.

LOCATIONS THAT WILL LIKELY BE AFFECTED BY THIS STORM INCLUDE
MARTINSBURG AND INWOOD.

WIND GUSTS OF 40 TO 50 MPH AND SMALL HAIL CAN BE EXPECTED WITH THIS
STORM.

$$
LISTEMAA

This weather bulletin was brought to you by mywinchester.org and the NWS Sterling, Va

Special Weather Statement

MyWinchester.org Weather Station Alert
WWUS81 KLWX 262312
SPSLWX

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
712 PM EDT FRI JUN 26 2009

VAZ027-028-WVZ050-055-270000-
SHENANDOAH VA-HARDY WV-HAMPSHIRE WV-FREDERICK VA-
712 PM EDT FRI JUN 26 2009

..STRONG THUNDERSTORMS TO AFFECT SHENANDOAH...HARDY...HAMPSHIRE AND
FREDERICK COUNTIES...

AT 712 PM EDT...DOPPLER RADAR INDICATED A STRONG THUNDERSTORM OVER
LEHEW...MOVING SOUTHEAST AT 25 MPH.

LOCATIONS THAT WILL LIKELY BE AFFECTED BY THIS STORM INCLUDE
STRASBURG AND STEPHENS CITY.

WIND GUSTS OF 40 TO 50 MPH AND SMALL HAIL CAN BE EXPECTED WITH THIS
STORM.

$$
LISTEMAA

This weather bulletin was brought to you by mywinchester.org and the NWS Sterling, Va

Special Weather Statement 26JUNE09

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
621 PM EDT FRI JUN 26 2009

VAZ027-028-031-042-WVZ050-055-262300-
SHENANDOAH VA-CLARKE VA-LOUDOUN VA-HARDY WV-HAMPSHIRE WV-FREDERICK VA-
621 PM EDT FRI JUN 26 2009

...STRONG THUNDERSTORMS TO AFFECT SHENANDOAH...CLARKE...LOUDOUN...
HARDY...HAMPSHIRE AND FREDERICK COUNTIES...

AT 621 PM EDT...DOPPLER RADAR INDICATED STRONG THUNDERSTORMS ALONG A
LINE EXTENDING FROM 3 MILES SOUTH OF SLANESVILLE TO STEPHENSON...
MOVING SOUTHEAST AT 15 MPH.

LOCATIONS THAT WILL LIKELY BE AFFECTED BY THESE STORMS INCLUDE
BERRYVILLE...STEPHENS CITY AND BLUEMONT.

WIND GUSTS OF 40 TO 50 MPH AND SMALL HAIL CAN BE EXPECTED WITH THIS
STORM.

Special Weather Statement

MyWinchester.org Weather Station Alert
WWUS81 KLWX 262221
SPSLWX

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
621 PM EDT FRI JUN 26 2009

VAZ027-028-031-042-WVZ050-055-262300-
SHENANDOAH VA-CLARKE VA-LOUDOUN VA-HARDY WV-HAMPSHIRE WV-FREDERICK VA-
621 PM EDT FRI JUN 26 2009

..STRONG THUNDERSTORMS TO AFFECT SHENANDOAH...CLARKE...LOUDOUN...
HARDY...HAMPSHIRE AND FREDERICK COUNTIES...

AT 621 PM EDT...DOPPLER RADAR INDICATED STRONG THUNDERSTORMS ALONG A
LINE EXTENDING FROM 3 MILES SOUTH OF SLANESVILLE TO STEPHENSON...
MOVING SOUTHEAST AT 15 MPH.

LOCATIONS THAT WILL LIKELY BE AFFECTED BY THESE STORMS INCLUDE
BERRYVILLE...STEPHENS CITY AND BLUEMONT.

WIND GUSTS OF 40 TO 50 MPH AND SMALL HAIL CAN BE EXPECTED WITH THIS
STORM.

$$

KRAMAR

This weather bulletin was brought to you by mywinchester.org and the NWS Sterling, Va

Severe Thunder Storm Watch 517

THE NATIONAL WEATHER SERVICE HAS ISSUED SEVERE THUNDERSTORM WATCH
517 IN EFFECT UNTIL 10 PM EDT THIS EVENING FOR THE FOLLOWING
AREAS

THE DISTRICT OF COLUMBIA

IN MARYLAND THIS WATCH INCLUDES 10 COUNTIES

IN CENTRAL MARYLAND

ANNE ARUNDEL HOWARD MONTGOMERY
PRINCE GEORGES

IN NORTH CENTRAL MARYLAND

CARROLL FREDERICK WASHINGTON

IN NORTHERN MARYLAND

BALTIMORE HARFORD

IN WESTERN MARYLAND

ALLEGANY

IN VIRGINIA THIS WATCH INCLUDES 10 COUNTIES

IN NORTHERN VIRGINIA

ARLINGTON FAIRFAX FAUQUIER
LOUDOUN PRINCE WILLIAM

IN NORTHWEST VIRGINIA

CLARKE FREDERICK RAPPAHANNOCK
SHENANDOAH WARREN

IN WEST VIRGINIA THIS WATCH INCLUDES 7 COUNTIES

IN NORTHEAST WEST VIRGINIA

BERKELEY GRANT HAMPSHIRE
HARDY JEFFERSON MINERAL
MORGAN

IN MARYLAND THIS WATCH INCLUDES 1 INDEPENDENT CITY

IN NORTHERN MARYLAND

BALTIMORE CITY

IN VIRGINIA THIS WATCH INCLUDES 6 INDEPENDENT CITIES

IN NORTHERN VIRGINIA

CITY OF ALEXANDRIA CITY OF FAIRFAX CITY OF FALLS CHURCH
CITY OF MANASSAS CITY OF MANASSAS PARK

IN NORTHWEST VIRGINIA

CITY OF WINCHESTER

THIS INCLUDES THE CITIES OF...ABERDEEN...ALEXANDRIA...ANNAPOLIS...
ARLINGTON...BALTIMORE...BAYARD...BEL AIR...BERRYVILLE...
CHANTILLY...CHARLES TOWNN...COLUMBIA...CUMBERLAND...EDGEWOOD...
FAIRFAX...FALLS CHURCH...FALLSTON...FORT ASHBY...FREDERICK...
FRONT ROYAL...GAITHERSBURG...HAGERSTOWN...HAVRE DE GRACE...
JOPPATOWNE...KEYSER...LAUREL...LEESBURG...MANASSAS...
MANASSAS PARK...MARTINSBURG...MCLEAN...MOOREFIELD...PAW PAW...
PETERSBURG...RESTON...ROMNEY...STERLING...STRASBURG...TOWSON...
WARRENTON...WASHINGTON...WASHINGTON...WESTMINSTER...WINCHESTER...
WINCHESTER...WOODBRIDGE AND
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