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Thanksgiving Eve storm obs and nowcasting


Ian

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Oh hey there Winter Storm Warning

 

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
1101 AM EST TUE NOV 25 2014

MDZ004>006-VAZ042-501-260000-
/O.UPG.KLWX.WS.A.0007.141126T1100Z-141126T2300Z/
/O.NEW.KLWX.WS.W.0012.141126T1100Z-141126T2300Z/
FREDERICK MD-CARROLL-NORTHERN BALTIMORE-LOUDOUN-NORTHERN FAUQUIER-
INCLUDING THE CITIES OF...FREDERICK...WESTMINSTER...LEESBURG...
WARRENTON
1101 AM EST TUE NOV 25 2014

...WINTER STORM WARNING IN EFFECT FROM 6 AM TO 6 PM EST
WEDNESDAY...

THE NATIONAL WEATHER SERVICE IN BALTIMORE MD/WASHINGTON HAS
ISSUED A WINTER STORM WARNING FOR SNOW...WHICH IS IN EFFECT FROM 6
AM TO 6 PM EST WEDNESDAY. THE WINTER STORM WATCH IS NO LONGER IN
EFFECT.

* PRECIPITATION TYPE...SNOW.

* ACCUMULATIONS...4 TO 8 INCHES NEAR THE BLUE RIDGE MOUNTAINS AND
MASON-DIXON LINE. 1 TO 3 INCHES ELSEWHERE.

* TIMING...A MIXTURE OF RAIN AND SNOW WILL CHANGE TO ALL SNOW
BETWEEN 6 AND 9 AM WEDNESDAY MORNING. THE HEAVIEST SNOW IS
EXPECTED BETWEEN 9 AM AND 2 PM WEDNESDAY. SNOW WILL END LATE
WEDNESDAY AFTERNOON.

* TEMPERATURES...LOWER TO MIDDLE 30S.

* WINDS...NORTH BECOMING NORTHWEST AROUND 10 TO 15 MPH.

* IMPACTS...ROADS WILL BECOME SNOW COVERED AND SLIPPERY AND
VISIBILITY MAY BE REDUCED BELOW A HALF MILE AT TIMES...MAINLY
NEAR THE BLUE RIDGE MOUNTAINS AND NEAR THE MASON-DIXON LINE.
INTERSTATES 66...70 AND 83 WILL BE IMPACTED BY THE SNOW. THIS
WILL HAVE SIGNIFICANT IMPACT ON HOLIDAY TRAVEL
PLANS...ESPECIALLY FOR TRAVELERS HEADED NORTH AND WEST TO
LOCATIONS NEAR THE MASON-DIXON LINE AND BLUE RIDGE MOUNTAINS.
HEAVY AMOUNTS OF WET SNOW MAY CAUSE DOWNED TREES THAT LEAD TO
AN ENHANCED THREAT FOR POWER OUTAGES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER STORM WARNING FOR HEAVY SNOW MEANS SEVERE WINTER WEATHER
CONDITIONS ARE EXPECTED OR OCCURRING. SIGNIFICANT AMOUNTS OF SNOW
ARE FORECAST THAT WILL MAKE TRAVEL DANGEROUS. ONLY TRAVEL IN AN
EMERGENCY. IF YOU MUST TRAVEL...KEEP AN EXTRA FLASHLIGHT...
FOOD...AND WATER IN YOUR VEHICLE IN CASE OF AN EMERGENCY.

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How can there be a WSW for 1-3"?. Why don't they issue a WSW and a WWA.

 

BC until the new zones go into effect, they have to issue a WSW for all of upper Baltimore County, as places near the PA/MD line will see warning snows, and places further south will not. Which is why it says IN THE WARNING

 

4-8" near the line

1-3" elsewhere. 

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BC until the new zones go into effect, they have to issue a WSW for all of upper Baltimore County, as places near the PA/MD line will see warning snows, and places further south will not. 

I have just never seen a WSW for 1-3" before. But i am getting old so i guess my memory is failing me.

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I have just never seen a WSW for 1-3" before. But i am getting old so i guess my memory is failing me.

 

Again, the warning is not for the 1-3", its listed there as places within the warning polygon (due to the zone setup) are technically under a "warning" but will not see warning snows. Hence it being listed there.

 

Starting next month, that shouldn't happen with the new zone map.

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Again, the warning is not for the 1-3", its listed there as places within the warning polygon (due to the zone setup) are technically under a "warning" but will not see warning snows. Hence it being listed there.

 

Starting next month, that shouldn't happen with the new zone map.

 

 

It's for the Parkton crowd... the rest of us even a little north of the beltway wouldn't be in a warning if we didn't share the same county

Got it thanks.

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Yeah but in the WWA area they say up to 2-5 for the far northern and western suburbs. Kinda a mixed signal forecast.

 

Didn't see that.... makes it a little inconsistent then. I'm guessing the 2-5" is for places like Damascus (the DC area's Parkton) and western Howard county.

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URGENT - WINTER WEATHER MESSAGENATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC1101 AM EST TUE NOV 25 2014MDZ003-501-502-VAZ025>031-503-504-WVZ050>053-055-501>506-260000-/O.UPG.KLWX.WS.A.0007.141126T1100Z-141126T2300Z//O.NEW.KLWX.WS.W.0012.141126T0800Z-141126T2300Z/WASHINGTON-EXTREME WESTERN ALLEGANY-CENTRAL AND EASTERN ALLEGANY-AUGUSTA-ROCKINGHAM-SHENANDOAH-FREDERICK VA-PAGE-WARREN-CLARKE-WESTERN HIGHLAND-EASTERN HIGHLAND-HAMPSHIRE-MORGAN-BERKELEY-JEFFERSON-HARDY-WESTERN GRANT-EASTERN GRANT-WESTERN MINERAL-EASTERN MINERAL-WESTERN PENDLETON-EASTERN PENDLETON-INCLUDING THE CITIES OF...HAGERSTOWN...FROSTBURG...CUMBERLAND...STAUNTON...WAYNESBORO...HARRISONBURG...WINCHESTER...FRONT ROYAL...HIGHTOWN...MONTEREY...MARTINSBURG...CHARLES TOWN...MOOREFIELD...BAYARD...MOUNT STORM...PETERSBURG...ELK GARDEN...KEYSER...FORT ASHBY...CIRCLEVILLE...FRANKLIN1101 AM EST TUE NOV 25 2014...WINTER STORM WARNING IN EFFECT FROM 3 AM TO 6 PM ESTWEDNESDAY...THE NATIONAL WEATHER SERVICE IN BALTIMORE MD/WASHINGTON HASISSUED A WINTER STORM WARNING FOR SNOW...WHICH IS IN EFFECT FROM 3AM TO 6 PM EST WEDNESDAY. THE WINTER STORM WATCH IS NO LONGER INEFFECT.* PRECIPITATION TYPE...SNOW.* ACCUMULATIONS...3 TO 6 INCHES BELOW 1500 FEET...6 TO 10 INCHES  ABOVE 1500 FEET.

:)

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BC until the new zones go into effect, they have to issue a WSW for all of upper Baltimore County, as places near the PA/MD line will see warning snows, and places further south will not. Which is why it says IN THE WARNING

 

4-8" near the line

1-3" elsewhere. 

you should be golden!

 

 

 

 

Again.

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