Monday, January 10, 2011

Threat switches from snow to freezing drizzle - Winter Weather Advisory in effect

Snow has moved out of the region this morning except for some flurries in some parts of the Mid-South. As the main weather system departs, another less potent one will swing by to our north over the next 24-30 hours. Much of the mid and upper-level moisture is departing with the overnight weather system, leaving only low-level moisture to work with. Thus the threat has shifted to freezing drizzle.

The Winter Storm Warning has been downgraded to a Winter Weather Advisory, effective until noon Tuesday for the entire Mid-South. Though amounts are expected to be very light, driving conditions could actually worsen as freezing drizzle could leave a very light glaze of ice behind. From the National Weather Service in Memphis:


URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE MEMPHIS TN
430 AM CST MON JAN 10 2011

...MAJOR WINTER STORM COMING TO AN END ACROSS THE MID-SOUTH BUT LINGERING LIGHT FREEZING DRIZZLE WILL CONTINUE TO BE A THREAT...

.STRONG LOW PRESSURE SYSTEM IS QUICKLY EXITING THE MID-SOUTH THIS MORNING. HOWEVER ANOTHER DISTURBANCE WILL SWING THROUGH THE AREA TODAY THROUGH TUESDAY MORNING. THE PRIMARY FOCUS WITH THIS SYSTEM WILL BE FREEZING DRIZZLE INSTEAD OF HEAVY SNOW. AREAS OF FREEZING DRIZZLE WILL ACCOMPANY THIS SYSTEM AND AFFECT PORTIONS OF THE MIDSOUTH TODAY BEFORE TAPERING OFF TUESDAY MORNING. LIGHT SNOW MAY ALSO MIX IN ESPECIALLY DURING THE OVERNIGHT HOURS.

...WINTER WEATHER ADVISORY IN EFFECT UNTIL NOON CST TUESDAY...
...WINTER STORM WARNING IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN MEMPHIS HAS ISSUED A WINTER WEATHER ADVISORY FOR FREEZING DRIZZLE... WHICH IS IN EFFECT UNTIL NOON CST TUESDAY. THE WINTER STORM WARNING HAS BEEN CANCELLED.


* ICE ACCUMULATIONS: LITTLE IF ANY ICE ACCUMULATIONS ARE EXPECTED AREA WIDE.

* TIMING: LIGHT FREEZING DRIZZLE WILL BEGIN LATE THIS MORNING AND WILL BE INTERMITTENT THROUGH THE DAY. VERY LIGHT SNOW MAY MIX IN ESPECIALLY DURING THE OVERNIGHT HOURS. ALL PRECIPITATION SHOULD END BY LATE MORNING TUESDAY.

* IMPACTS: ROAD CONDITIONS WILL LIKELY WORSEN THROUGH THE DAY AS FREEZING DRIZZLE COMMENCES. THE DANGEROUS TRAVEL CONDITIONS WILL LIKELY CONTINUE INTO TUESDAY AS TEMPERATURES WILL STRUGGLE TO REACH THE FREEZING MARK IN MOST AREAS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW... SLEET... OR FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS AND LIMITED VISIBILITIES... AND USE CAUTION WHILE DRIVING.


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