PRELIMINARY CLIMATE SUMMARY FOR SUMMER 2010

PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
418 PM EDT WED SEP 1 2010

...PRELIMINARY CLIMATE SUMMARY FOR SUMMER 2010...


THE FOLLOWING IS A BRIEF AND PRELIMINARY CLIMATE SUMMARY OF
TEMPERATURES FOR METEOROLOGICAL SUMMER 2010...WHICH IS FOR PERIOD
SPANNING JUNE 1ST THROUGH AUGUST 31ST INCLUSIVE...FOR WASHINGTON DC
AND BALTIMORE MD. RESULTS POSTED BELOW ARE TO BE CONSIDERED AS AN
UNOFFICIAL SUMMARY.


FOR WASHINGTON DC...

THE METEOROLOGICAL SUMMER PERIOD...JUNE TO AUGUST...OF 2010 WAS THE
WARMEST ON RECORD FOR WASHINGTON DC. THE AVERAGE TEMPERATURE DURING
THIS 92 DAY PERIOD WAS 81.3F...OVER ONE DEGF HIGHER THAN THE PREVIOUS
WARMEST METEOROLOGICAL SUMMER ON RECORD OF 80.0F RECORDED IN 1980.

FOR THE FIRST TIME ON RECORD...SINCE 1872...THE HIGH TEMPERATURE
FOR THE METEOROLOGICAL SUMMER MONTHS OF 2010 IN WASHINGTON AVERAGED
OVER 90 DEGREES...90.2F. THE PREVIOUS WARMEST HIGH TEMPERATURE FOR
THE METEOROLOGICAL SUMMER SEASON WAS 89.3F IN 1980.

THE LOW TEMPERATURE AVERAGED 72.4F FOR THE METEOROLOGICAL SUMMER
MONTHS OF 2010...WHICH WAS THE WARMEST ON RECORD BY 1.6 DEGREES.

SO FAR THIS YEAR THROUGH AUGUST...WASHINGTON DC HAS EXPERIENCED 57
DAYS OF 90F OR GREATER...WHICH IS TIED WITH 1988 FOR THE MOST NUMBER
OF SUCH DAYS ON RECORD THROUGH AUGUST...AND IS 12 DAYS OFF THE
RECORD OF 67 90-DEGREE DAYS FOR AN ENTIRE YEAR THAT WAS SET IN 1980.

MyWinchester Weather Station (Automated) WEATHER WARNING first rain today

******WEATHER WARNING ******
-----------------------------
first rain today
-----------------------------
Time of event was : 8:52:01 PM
Date of event was : 08/23/10
Current conditions :
Windspeed 0.0 mph
Direction W 270 �
Temperature 66.4 �F
Heat index 70.6 �F
Humidity 97 %
Barometer 29.884 in.
Maximum windspeed 25.8 mph SW at time: 1:50 PM
Maximum speed last hr 6.0 mph W at time: 7:52PM
Rain today 0.043 in.
Maximum temperature 82.4 �F at time: 10:47 AM
Minimum temperature 66.4 �F at time: 8:37 PM
Rain Rate/min 0.000 in./min (0.000 in./hr)
Rain last hour 0.000 in.
Max Rain Rate 0.000 in./min (0.000 in./hr) at time: 00:00 AM

Air Quality Alert for Saturday (Code Orange)

425 PM EDT FRI AUG 20 2010
...AIR QUALITY ALERT IS IN EFFECT FOR SATURDAY AUGUST 21 2010...
THE VIRGINIA DEPARTMENT OF ENVIRONMENTAL QUALITY...MARYLAND
DEPARTMENT OF THE ENVIRONMENT...AND WEST VIRGINIA DEPARTMENT OF
ENVIRONMENTAL PROTECTION HAS ISSUED A CODE ORANGE AIR QUALITY
ALERT SATURDAY FOR
WESTERN MARYLAND...EASTERN WEST VIRGINIA...AND FREDERICK COUNTY
VIRGINIA.
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.AIRNOW.GOV.

Latest Radar Snap

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Heavy rain is forecast for EAST of the Blue Ridge Mountains. With rainfall over 2.5” possible.

Flooding has already occurred with more to come. Area flood warnings have been posted.

Severe Thunderstorm Watch - Cancellation

**Weather Alert**
WWUS61 KLWX 162240
WCNLWX

WATCH COUNTY NOTIFICATION FOR WATCH 620
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
640 PM EDT MON AUG 16 2010

MDC013-021-043-VAC015-043-069-107-139-165-171-187-660-790-820-840-
WVC003-037-162345-
/O.CAN.KLWX.SV.A.0620.000000T0000Z-100817T0200Z/

THE NATIONAL WEATHER SERVICE HAS CANCELLED SEVERE THUNDERSTORM
WATCH 620 FOR THE FOLLOWING AREAS

IN MARYLAND THIS CANCELS 3 COUNTIES

IN NORTH CENTRAL MARYLAND

CARROLL FREDERICK WASHINGTON

IN VIRGINIA THIS CANCELS 8 COUNTIES

IN NORTHERN VIRGINIA

LOUDOUN

IN NORTHWEST VIRGINIA

CLARKE FREDERICK PAGE
SHENANDOAH WARREN

IN WESTERN VIRGINIA

AUGUSTA ROCKINGHAM

IN WEST VIRGINIA THIS CANCELS 2 COUNTIES

IN NORTHEAST WEST VIRGINIA

BERKELEY JEFFERSON

IN VIRGINIA THIS CANCELS 4 INDEPENDENT CITIES

IN NORTHWEST VIRGINIA

CITY OF HARRISONBURG CITY OF WINCHESTER

IN WESTERN VIRGINIA

CITY OF STAUNTON CITY OF WAYNESBORO

THIS INCLUDES THE CITIES OF...BERRYVILLE...CHARLES TOWNN...
FREDERICK...FRONT ROYAL...HAGERSTOWN...HARRISONBURG...
HARRISONBURG...LEESBURG...LURAY...MARTINSBURG...STAUNTON...
STAUNTON...STERLING...STRASBURG...WAYNESBORO...WAYNESBORO...
WESTMINSTER...WINCHESTER...WINCHESTER AND WOODSTOCK.

$$

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Severe Thunderstorm Watch

**Weather Alert**
WWUS61 KLWX 161813
WCNLWX

WATCH COUNTY NOTIFICATION FOR WATCH 620
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
213 PM EDT MON AUG 16 2010

DCC001-MDC003-005-009-013-017-021-025-027-031-033-037-043-510-
VAC003-013-015-043-047-059-061-069-079-099-107-113-125-137-139-
153-157-165-171-177-179-187-510-540-600-610-630-660-683-685-790-
820-840-WVC003-037-170200-
/O.NEW.KLWX.SV.A.0620.100816T1815Z-100817T0200Z/

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

THE DISTRICT OF COLUMBIA

IN MARYLAND THIS WATCH INCLUDES 12 COUNTIES

IN CENTRAL MARYLAND

ANNE ARUNDEL HOWARD MONTGOMERY
PRINCE GEORGES

IN NORTH CENTRAL MARYLAND

CARROLL FREDERICK WASHINGTON

IN NORTHERN MARYLAND

BALTIMORE HARFORD

IN SOUTHERN MARYLAND

CALVERT CHARLES ST. MARYS

IN VIRGINIA THIS WATCH INCLUDES 22 COUNTIES

IN CENTRAL VIRGINIA

ALBEMARLE GREENE KING GEORGE
NELSON ORANGE SPOTSYLVANIA

IN NORTHERN VIRGINIA

ARLINGTON CULPEPER FAIRFAX
FAUQUIER LOUDOUN PRINCE WILLIAM
STAFFORD

IN NORTHWEST VIRGINIA

CLARKE FREDERICK MADISON
PAGE RAPPAHANNOCK SHENANDOAH
WARREN

IN WESTERN VIRGINIA

AUGUSTA ROCKINGHAM

IN WEST VIRGINIA THIS WATCH INCLUDES 2 COUNTIES

IN NORTHEAST WEST VIRGINIA

BERKELEY JEFFERSON

IN MARYLAND THIS WATCH INCLUDES 1 INDEPENDENT CITY

IN NORTHERN MARYLAND

BALTIMORE CITY

IN VIRGINIA THIS WATCH INCLUDES 11 INDEPENDENT CITIES

IN CENTRAL VIRGINIA

CHARLOTTESVILLE CITY OF FREDERICKSBURG

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 HARRISONBURG CITY OF WINCHESTER

IN WESTERN VIRGINIA

CITY OF STAUNTON CITY OF WAYNESBORO

THIS INCLUDES THE CITIES OF...ABERDEEN...ALEXANDRIA...ANNAPOLIS...
ARLINGTON...BALTIMORE...BEL AIR...BERRYVILLE...CHANTILLY...
CHARLES TOWNN...CHARLOTTESVILLE...CHARLOTTESVILLE...
CHESAPEAKE BEACH...COLUMBIA...CULPEPER...DAHLGREN...EDGEWOOD...
FAIRFAX...FALLS CHURCH...FALLSTON...FALMOUTH...FREDERICK...
FREDERICKSBURG...FRONT ROYAL...GAITHERSBURG...GREENFIELD...
HAGERSTOWN...HARRISONBURG...HARRISONBURG...HAVRE DE GRACE...
JOPPATOWNE...LAUREL...LEESBURG...LURAY...MADISON...MANASSAS...
MANASSAS PARK...MARTINSBURG...MCLEAN...ORANGE...RESTON...
SPOTSYLVANIA COURTHOUSE...ST MARYS...STANARDSVILLE...STAUNTON...
STAUNTON...STERLING...STRASBURG...TOWSON...WALDORF...WARRENTON...
WASHINGTON...WASHINGTON...WAYNESBORO...WAYNESBORO...WESTMINSTER...
WINCHESTER...WINCHESTER...WOODBRIDGE AND WOODSTOCK.

$$

HTS

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Special Weather Statement

**Weather Alert**
WWUS81 KLWX 152109
SPSLWX

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
509 PM EDT SUN AUG 15 2010

VAZ027-028-030-031-152145-
WARREN VA-SHENANDOAH VA-CLARKE VA-FREDERICK VA-
509 PM EDT SUN AUG 15 2010

..STRONG THUNDERSTORMS TO AFFECT WARREN...SHENANDOAH...CLARKE AND
FREDERICK COUNTIES...

AT 509 PM EDT...DOPPLER RADAR INDICATED A STRONG THUNDERSTORM 2 MILES
NORTHWEST OF MIDDLETOWN...MOVING EAST AT 15 MPH.

HEAVY RAIN WITH THIS STORM MAY REDUCE VISIBILITIES TO BELOW ONE MILE
AND MAY CAUSE PONDING OF WATER ON ROADWAYS.

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

&&

LAT...LON 3908 7803 3890 7814 3900 7842 3912 7835
TIME...MOT...LOC 2109Z 289DEG 13KT 3904 7830

$$
PELOQUIN

WWWW

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Severe Weather Possible this PM

PUBLIC INFORMATION STATEMENT NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC  252 PM EDT THU AUG 12 2010  ...SEVERE WEATHER SAFETY RULES...  DAMAGING THUNDERSTORMS ARE POSSIBLE THIS AFTERNOON. RESIDENTS ACROSS  THE REGION SHOULD MONITOR THIS SITUATION VERY CLOSELY AND ENSURE  YOUR NOAA WEATHER RADIOS ARE SET TO ALERT MODE. SEVERE WEATHER  WARNINGS MAY BECOME NECESSARY. HERE ARE SOME SAFETY RULES TO KEEP IN  MIND WHEN SEVERE WEATHER IS EXPECTED OR IS OCCURRING.  IF A WARNING IS ISSUED...SEEK SHELTER INDOORS IMMEDIATELY. A SEVERE  THUNDERSTORM IS DEFINED AS PRODUCING QUARTER SIZE OR GREATER HAIL AND  WIND GUSTS OF 58 MPH OR MORE.   TORNADOES CAN SOMETIMES FORM VERY RAPIDLY FROM SEVERE THUNDERSTORMS.  MONITOR LOCAL CONDITIONS CLOSELY AND BE READY TO TAKE QUICK ACTION  TO SAVE YOUR LIFE.  STAY TUNED TO NOAA WEATHER RADIO...COMMERCIAL RADIO OR TELEVISION  FOR THE LATEST ON THIS POTENTIAL SEVERE WEATHER EVENT. ADDITIONAL  WEATHER INFORMATION...CAN BE FOUND AT WEATHER.GOV/WASHINGTON OR  WEATHER.GOV/BALTIMORE.

Severe Weather Possible Thursday…

THE COMBINATION OF INCREASING LOW-LEVEL MOISTURE...MODEST
INSTABILITY AND AN APPROACHING UPPER-LEVEL DISTURBANCE WILL RESULT
IN THUNDERSTORMS THURSDAY AFTERNOON AND EVENING. A FEW OF THE
STORMS COULD BECOME SEVERE AND WILL BE CAPABLE OF PRODUCING
DAMAGING WIND GUSTS AND TORRENTIAL RAIN.