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Freezing rain event observations


IsentropicLift

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20 degrees and overcast.

 

Radar looks good. Could be some nasty ice for awhile today

 

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
410 AM EST WED FEB 19 2014

NJZ001-007-008-PAZ054-055-060>062-191500-
/O.CON.KPHI.ZR.Y.0005.140219T1200Z-140219T1700Z/
SUSSEX-WARREN-MORRIS-CARBON-MONROE-BERKS-LEHIGH-NORTHAMPTON-
INCLUDING THE CITIES OF...NEWTON...WASHINGTON...MORRISTOWN...
JIM THORPE...STROUDSBURG...READING...ALLENTOWN...BETHLEHEM...
EASTON
410 AM EST WED FEB 19 2014

...FREEZING RAIN ADVISORY REMAINS IN EFFECT FROM 7 AM THIS
MORNING TO NOON EST TODAY...

* LOCATIONS...NORTHWEST NEW JERSEY... THE POCONOS... BERKS
  COUNTY AND THE LEHIGH VALLEY.

* HAZARD TYPES...FREEZING RAIN.

* ICE ACCUMULATIONS...LESS THAN ONE TENTH OF AN INCH.

* TIMING...FREEZING RAIN IS EXPECTED TO START DURING THE MORNING COMMUTE.
  TEMPERATURES WILL RISE AS THE MORNING PROGRESSES AND START
  DECREASING THE GEOGRAPHICAL EXTENT OF THE FREEZING RAIN DURING
  THE LATTER HALF OF THE MORNING.

* IMPACTS...ANY UNTREATED ROADWAYS WILL BE SLIPPERY AND
  HAZARDOUS. UNTREATED WALKWAYS WILL ALSO BE SLIPPERY AND
  HAZARDOUS.

* TEMPERATURES...IN THE UPPER 20S TO AROUND 30 WHEN
  PRECIPITATION ARRIVES...RISING INTO THE UPPER 30S AND LOWER
  40S DURING WEDNESDAY AFTERNOON.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FREEZING RAIN ADVISORY MEANS THAT PERIODS OF FREEZING RAIN WILL
CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR SLIPPERY ROADS. SLOW
DOWN AND USE CAUTION WHILE DRIVING. BE ESPECIALLY CAREFUL WHILE
TRAVELING ON BRIDGES AND OVERPASSES. GIVE YOURSELF EXTRA TIME TO
REACH YOUR DESTINATION AND EXTRA DISTANCE BETWEEN YOURSELF AND
THE VEHICLES AROUND YOU.

&&
 

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HRRR insists that this event lasts 1-2 hours at the very most. Wonder if we get some rumbles of thunder with the dynamics moving northward. My gut tells me that will stay south of Philly. 

 

Thundersnow has been reported as far north Hazeltown,PA, already.

 

http://www.wrh.noaa.gov/mesowest/getobext.php?sid=KHZL

 

This area of precip is on leading of greater instability. NAM has TTs at 56 for NYC late this afternoon. Which looks slow:

 

2yv0uw9.jpg

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What type of an advisory were you looking for?

 

We've had 3 hours, at least in my area, of moderate to occasionally heavy rain, sleet, and snow with surface temps in the 20's.  To me that would justify a short fused winter or freezing rain advisory.  But almost the entire Albany county warning area seems to have had mostly snow from this, so maybe that's why they didn't issue one.

 

Here's a pic from a short while ago, the roads are a mess 

post-8457-0-48308700-1392832431_thumb.jp

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BRONX-HUDSON-KINGS (BROOKLYN)-NEW YORK (MANHATTAN)-NORTHERN

QUEENS-RICHMOND (STATEN IS.)-SOUTHERN QUEENS-

250 PM EST WED FEB 19 2014

...RAIN AND WARM TEMPERATURES LEADING TO FALLING ICE FROM

BUILDINGS...

ANOTHER BAND OF SHOWERS IS EXPECTED THIS EVENING BETWEEN 5 AND 6 PM.

IN ADDITION...WINDS WILL INCREASE THIS EVENING WITH SPEEDS OF 30 MPH

LIKELY ABOVE 500 FEET. WITH TEMPERATURES NEAR 40...THE THREAT OF ICE

DISLODGING AND FALLING FROM BUILDINGS WILL CONTINUE.

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