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Jan 17-19 Mid-Atlantic obs/disco


Ian

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Some of these temperatures in the not-so-far out suburbs are surprisingly low.. This could be get pretty pretty brutal overnight once the sleet transitions over to frz rain.

The SPC meso charts of wetbulb and near-surface freezing temps clearly show this. I can't post the images though :axe:

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The SPC meso charts of wetbulb and near-surface freezing temps clearly show this. I can't post the images though :axe:

You were right last night.. You had quite a few doubters, myself included.. Never really thought the city would stay this cold as long as it appears to be doing.

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URGENT - WINTER WEATHER MESSAGE

NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC

1037 PM EST MON JAN 17 2011

MDZ004>007-009>011-181145-

/O.UPG.KLWX.WW.Y.0005.000000T0000Z-110118T1700Z/

/O.NEW.KLWX.WS.W.0002.110118T0337Z-110118T1700Z/

FREDERICK MD-CARROLL-NORTHERN BALTIMORE-HARFORD-MONTGOMERY-HOWARD-

SOUTHERN BALTIMORE-

INCLUDING THE CITIES OF...FREDERICK...WESTMINSTER...

GAITHERSBURG...COLUMBIA...BALTIMORE

1037 PM EST MON JAN 17 2011

...WINTER STORM WARNING IN EFFECT UNTIL NOON EST TUESDAY...

THE NATIONAL WEATHER SERVICE IN BALTIMORE MD/WASHINGTON HAS

ISSUED A WINTER STORM WARNING FOR FREEZING RAIN...WHICH

IS IN EFFECT UNTIL NOON EST TUESDAY. THE WINTER WEATHER ADVISORY

IS NO LONGER IN EFFECT.

* PRECIPITATION TYPE...SNOW...SLEET AND FREEZING RAIN. FREEZING

RAIN WILL HAVE THE MOST SIGNIFICANT IMPACT.

* ACCUMULATIONS...ONE INCH OR LESS OF SNOW AND SLEET ACCUMULATION.

TWO TO THREE TENTHS OF AN INCH OF ICE ACCUMULATION. ICE

ACCUMULATIONS WILL BE HIGHEST ACROSS THE NORTHERN AND WESTERN

SUBURBS OF BALTIMORE.

* TIMING...A MIX OF SNOW AND SLEET THIS EVENING. PRECIPITATION IS

EXPECTED TO CHANGE TO FREEZING RAIN BETWEEN 11 PM AND 2 AM...AND

CONTINUE OVERNIGHT INTO THE RUSH HOUR COMMUTE TUESDAY MORNING.

FREEZING RAIN WILL CHANGE TO RAIN FROM SOUTHEAST TO NORTHWEST BY

LATE MORNING.

* TEMPERATURES...MID TO UPPER 20S TONIGHT AND EARLY TUESDAY

MORNING...RISING TO THE LOW 30S BY THE MID MORNING. HIGHS

TUESDAY AFTERNOON IN THE UPPER 30S.

* WINDS...NORTHEAST 5 TO 10 MPH TONIGHT. BECOMING NORTHWEST 10 TO

15 MPH TUESDAY.

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