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Latest Sub-Freezing Day in History on Monday??


ChescoWx
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IF (and a big if) the latest 18z NAM is to be believed Monday's currently forecast of a sub-freezing high temperature here in Chester County would mark the latest day in recorded weather history that the thermometer failed to reach 32 degrees in a calendar year! The latest sub-freezing day in Chester County was the 32 degrees back on March 26, 2014.

I am not sure of what the record latest sub freezing low max is at PHL or other locations but....something unusual especially in our current warming cycle at least out here in Chester County!

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5 hours ago, ChescoWx said:

IF (and a big if) the latest 18z NAM is to be believed Monday's currently forecast of a sub-freezing high temperature here in Chester County would mark the latest day in recorded weather history that the thermometer failed to reach 32 degrees in a calendar year! The latest sub-freezing day in Chester County was the 32 degrees back on March 26, 2014.

I am not sure of what the record latest sub freezing low max is at PHL or other locations but....something unusual especially in our current warming cycle at least out here in Chester County!

There wasn't a sub freezing day in April 1982?

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Below are a list of the latest sub-freezing days for multiple locations in Chester and nearby Berks / Lehigh County - all locations with the exception of West Chester and ABE Airport (both would be 2nd latest ever) would (IF we fail to reach 32 degrees tomorrow) record their latest sub-freezing day in recorded weather history!!

Western Chesco (Coatesville/ENANT) - March 26, 2014

Phoenixville - March 24, 1896

West Chester - April 1, 1923 (2nd latest ever would be tomorrow - previous 2nd latest was 3/25/40)

Chadds Ford - March 19, 1956

Glenmoore - March 22, 2018

Octoraro Lake - March 21, 2018

KMQS Airport - March 17, 2014

Morgantown - March 27, 1955

ABE Airport - tomorrow would be 2nd latest - record is 4/7/82

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Mt. Holly had a climatology section in their AFD this morning that included the Monday March 28 record low max temps for the area -

Quote
&&

.CLIMATE...
Here are the minimum high temperature records for Monday, March
28:

Allentown               37 in 1996, 1966, 1959
Atlantic City Airport   39 in 1996, 1959, 1956
Atlantic City Marina    37 in 1956
Georgetown              40 in 2015, 1982
Mount Pocono            24 in 1937
Philadelphia            35 in 1877
Reading                 35 in 1937
Trenton                 35 in 1919
Wilmington 37 in 1996

&&

 

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1 hour ago, Hurricane Agnes said:

Mt. Holly had a climatology section in their AFD this morning that included the Monday March 28 record low max temps for the area -

 

Looks like many of those may be in reach....more stunning is that in many cases it will be coldest high temps so late in the spring on record!

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Here are the minimum high temperature records for Monday, March 28 from the National Weather Service in Mount Holly.

In Western Chester County the record minimum high temperature is 35 in 1996

Allentown 37 in 1996, 1966, 1959

Atlantic City Airport 39 in 1996, 1959, 1956

Atlantic City Marina 37 in 1956

Georgetown 40 in 2015

1982 Mount Pocono 24 in 1937

Philadelphia 35 in 1877

Reading 35 in 1937

Trenton 35 in 1919

Wilmington 37 in 1996

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9 minutes ago, ChescoWx said:

Looks like many of those may be in reach....more stunning is that in many cases it will be coldest high temps so late in the spring on record!

Polar Vortex weakening.  It has been very strong much of the winter and stayed put, which is not that common for such an extended period in general... but then the stratospheric warming began - https://www.severe-weather.eu/global-weather/strong-polar-vortex-warming-collapse-event-forecast-spring-2022-usa-europe-fa/

leading to this - https://www.severe-weather.eu/global-weather/polar-vortex-2022-dramatic-arctic-cold-season-return-united-states-canada-mk/

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28 minutes ago, Hurricane Agnes said:

Polar Vortex weakening.  It has been very strong much of the winter and stayed put, which is not that common for such an extended period in general... but then the stratospheric warming began - https://www.severe-weather.eu/global-weather/strong-polar-vortex-warming-collapse-event-forecast-spring-2022-usa-europe-fa/

leading to this - https://www.severe-weather.eu/global-weather/polar-vortex-2022-dramatic-arctic-cold-season-return-united-states-canada-mk/

IF some of these records are actually broken tomorrow it will be a truly amazing cold record....the coldest day ever on record so late in any season!!!....incredible - especially in our current warm cycle

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That was pretty serious cold here and I bottomed out at 22 at 6:45 am this morning.  The winds never went calm overnight so that was pure cold air and not even radiational cooling.  The dp dropped down to as low as 2.

I know the blooms on star magnolia not far from me are or will probably be mush (although it had been blooming for about a week already).

It's currently partly cloudy with lots of cumulus and the temp has recovered to 29 with dp now up to 10.

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New Snow Squall Warning issued south of me across the western 'burbs and through west/central Philly and into Jersey -

 

Quote

Snow Squall Warning

SNOW SQUALL WARNING
NWS MOUNT HOLLY NJ
354 PM EDT MON MAR 28 2022

NJC007-015-PAC029-045-091-101-282015-
/O.CON.KPHI.SQ.W.0012.000000T0000Z-220328T2015Z/
354 PM EDT MON MAR 28 2022
Camden County NJ-Gloucester County NJ-Chester County PA-Delaware
County PA-Montgomery County PA-Philadelphia County PA-

...A SNOW SQUALL WARNING REMAINS IN EFFECT UNTIL 415 PM EDT FOR
NORTHWESTERN CAMDEN...NORTH CENTRAL GLOUCESTER...SOUTH CENTRAL
MONTGOMERY...NORTHEASTERN CHESTER...SOUTHWESTERN PHILADELPHIA AND
NORTHEASTERN DELAWARE COUNTIES...

At 353 PM EDT, a dangerous snow squall was located over Broomall, or
11 miles west of Philadelphia, moving southeast at 45 mph.

HAZARD...Extremely poor visibility in heavy snow and blowing snow.
Wind gusts greater than 30 mph.

SOURCE...Radar and webcams.

IMPACT...Dangerous life-threatening travel.

This includes the following highways...
Pennsylvania Turnpike between mile markers 326 and 329.
Interstate 95 in Pennsylvania between mile markers 12 and 24.
Interstate 76 in Pennsylvania between mile markers 327 and 332, and
between mile markers 337 and 351.
Interstate 76 in New Jersey between mile markers 0 and 3.
Interstate 295 in New Jersey between mile markers 22 and 27.
Interstate 676 in Pennsylvania between mile markers 0 and 1.
Interstate 676 in New Jersey between mile markers 0 and 4.
Interstate 476 in Pennsylvania between mile markers 5 and 16.

Locations impacted include...
Philadelphia, Camden, Gloucester City, Deptford, Bellmawr, Yeadon,
Woodbury, Folcroft, Westville, Narberth, Woodbury Heights, National
Park, East Lansdowne, Brooklawn, Audubon Park, Darby Township, Morris
Park, Bryn Mawr, Trout Lake and Golden Triangle.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Consider avoiding or delaying travel until the snow squall passes
your location. If you must travel, use extra caution and allow extra
time. Rapid changes in visibility and slick road conditions may lead
to accidents.

LAT...LON 4001 7550 4011 7541 3994 7502 3982 7515
          4001 7550

$$

Sun back out here and temp back up to 31 with d 11.

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And another flizzard blob overhead.  Temp down to 25 with dp 18.

Also had a bunch of RERs today for coldest max for the date (Philly may have just missed it or tied it last I checked) -

Quote
SXUS71 KPHI 282217
 RERABE
 
 RECORD EVENT REPORT
 NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
 0615 PM EDT MON MAR 28 2022
 
 ...RECORD COLDEST HIGH TEMPERATURE SET AT ALLENTOWN PA...
 
 A RECORD COLDEST HIGH TEMPERATURE FOR MARCH 28TH OF 31 WAS SET AT 
 THE LEHIGH VALLEY INTERNATIONAL AIRPORT IN ALLENTOWN TODAY. THIS 
 BREAKS THE OLD RECORD OF 37 SET ON THIS DATE IN 1959, 1966, AND 
 1996. TEMPERATURE RECORDS AT THIS STATION DATE BACK TO MARCH OF 1922.
 
 $$
 
 AKL

 

Quote
SXUS71 KPHI 282216 RRB
 RERACY
 
 RECORD EVENT REPORT
 NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
 0615 PM EDT MON MAR 28 2022
 
 ...RECORD COLDEST HIGH TEMPERATURE SET AT ATLANTIC CITY AIRPORT IN 
 POMONA NJ...
 
 A RECORD COLDEST HIGH TEMPERATURE FOR MARCH 28TH OF 38 DEGREES WAS 
 SET AT ATLANTIC CITY INTERNATIONAL AIRPORT IN POMONA NJ TODAY. 
 THIS BREAKS THE OLD RECORD OF 39 DEGREES SET ON THIS DATE IN 1956, 
 1959, AND 1996. TEMPERATURE RECORDS AT THIS STATION DATE BACK TO 
 AUGUST OF 1943.
 
 $$
 
 AKL

 

Quote
SXUS71 KPHI 282215
 RERGED
 
 RECORD EVENT REPORT
 NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
 0615 PM EDT MON MAR 28 2022
 
 ...RECORD COLDEST HIGH TEMPERATURE SET AT GEORGETOWN DE...
 
 A RECORD COLDEST HIGH TEMPERATURE FOR MARCH 28TH OF 38 DEGREES WAS 
 SET AT GEORGETOWN DE TODAY. THIS BREAKS THE OLD RECORD OF 40 
 DEGREES SET ON THIS DATE IN 1982 AND 2015. TEMPERATURE RECORDS AT 
 GEORGETOWN DE DATE BACK TO FEBRUARY OF 1945.
 
 $$
 
 AKL

 

Quote
SXUS71 KPHI 282218 RRA
 RERILG
 
 RECORD EVENT REPORT
 NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
 0615 PM EDT MON MAR 28 2022
 
 ...RECORD COLDEST HIGH TEMPERATURE TIED AT WILMINGTON DE...
 
 A RECORD COLDEST HIGH TEMPERATURE FOR MARCH 28TH OF 37 WAS TIED AT 
 WILMINGTON DE TODAY. THIS TIES THE OLD RECORD OF 37 SET ON 
 THIS DATE IN 1996. TEMPERATURE RECORDS AT THIS STATION DATE BACK TO 
 JANUARY OF 1894.
 
 $$
 
 AKL

 

Quote
SXUS71 KPHI 282217 RRA
 RERMPO
 
 RECORD EVENT REPORT
 NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
 0615 PM EDT MON MAR 28 2022
 
 ...RECORD COLDEST HIGH TEMPERATURE SET AT MOUNT POCONO PA...
 
 A RECORD COLDEST HIGH TEMPERATURE FOR MARCH 28TH OF 21 WAS SET AT 
 MOUNT POCONO PA TODAY. THIS BREAKS THE OLD RECORD OF 24 SET ON 
 THIS DATE IN 1937. TEMPERATURE RECORDS AT THIS STATION DATE BACK TO 
 SEPTEMBER OF 1901.
 
 $$
 
 AKL

 

Quote
SXUS71 KPHI 282216 RRC
 RERRDG
 
 RECORD EVENT REPORT
 NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
 0615 PM EDT MON MAR 28 2022
 
 ...RECORD COLDEST HIGH TEMPERATURE SET AT READING PA...
 
 A RECORD COLDEST HIGH TEMPERATURE FOR MARCH 28TH OF 34 WAS SET AT 
 READING PA TODAY. THIS BREAKS THE OLD RECORD OF 35 SET ON THIS 
 DATE IN 1937. TEMPERATURE RECORDS AT THIS STATION DATE BACK TO 
 JANUARY OF 1888.
 
 $$
 
 AKL

 

Quote
SXUS71 KPHI 282218
 RERTTN
 
 RECORD EVENT REPORT
 NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
 0615 PM EDT MON MAR 28 2022
 
 ...RECORD COLDEST HIGH TEMPERATURE SET AT TRENTON NJ...
 
 A RECORD COLDEST HIGH TEMPERATURE FOR MARCH 28TH OF 32 WAS SET AT 
 TRENTON NJ TODAY. THIS BREAKS THE OLD RECORD OF 35 SET ON THIS 
 DATE IN 1919. HIGH TEMPERATURE RECORDS AT THIS STATION DATE BACK TO 
 JUNE OF 1865.
 
 $$
 
 AKL

 

 

radar27-03282022.png

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