Snow Squall Warning 3, NWS Philadelphia/Mount Holly

Issued

Jan 8, 2020, 8:28 AM EST (13:28 UTC)

Expired

Jan 8, 2020, 9:15 AM EST

In force

47 min

Issued by

NWS Philadelphia/Mount Holly

Area

Storm-based polygon

Counties Berks County, PA, Bucks County, PA, Chester County, PA, Delaware County, PA, Montgomery County, PA

The Philadelphia radar (KDIX), 106 km from the middle of the area, began a volume at 13:26 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

736 
WWUS51 KPHI 081328
SQWPHI

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Snow Squall Warning
National Weather Service Mount Holly NJ
828 AM EST Wed Jan 8 2020

PAC011-017-029-045-091-081415-
/O.NEW.KPHI.SQ.W.0003.200108T1328Z-200108T1415Z/
Berks PA-Montgomery PA-Bucks PA-Chester PA-Delaware PA-
828 AM EST Wed Jan 8 2020

The National Weather Service in Mount Holly NJ has issued a

* Snow Squall Warning for...
  Southeastern Berks County in eastern Pennsylvania...
  Montgomery County in southeastern Pennsylvania...
  Southwestern Bucks County in southeastern Pennsylvania...
  Northeastern Chester County in southeastern Pennsylvania...
  Northeastern Delaware County in southeastern Pennsylvania...

* Until 915 AM EST.

* At 828 AM EST, a dangerous snow squall was located near Elverson,
  or 11 miles southeast of Reading, moving east at 45 mph.

  HAZARD...Extremely poor visibility in heavy snow and blowing snow. 
           Wind gusts up to 30 mph.

  SOURCE...Radar indicated.

  IMPACT...Dangerous life-threatening travel.

* This includes the following highways...
   Interstate 476 in Pennsylvania between mile markers 10 and 19.
   Pennsylvania Turnpike between exits 298 and 333.
   Northeast Extension between exits A20 and A31.
   Interstate 176 in Pennsylvania between mile markers 1 and 11.
   Interstate 76 in Pennsylvania between mile markers 327 and 335.

Locations impacted include...
Reading, Norristown, Pottstown, Phoenixville, Lansdale, West
Norriton, East Norriton, Wyomissing, Conshohocken, Souderton,
Birdsboro, Collegeville, Royersford, Chalfont, Sinking Spring,
Trappe, Hatfield, Wernersville, Schwenksville and Elverson.

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 4033 7520 3998 7528 4012 7592 4014 7588
      4034 7617
TIME...MOT...LOC 1328Z 274DEG 37KT 4020 7578 

$$

Staarmann

999 
WWUS51 KPHI 081354
SQWPHI

Snow Squall Warning
National Weather Service Mount Holly NJ
853 AM EST Wed Jan 8 2020

PAC011-017-029-045-091-081415-
/O.CON.KPHI.SQ.W.0003.000000T0000Z-200108T1415Z/
Berks PA-Montgomery PA-Bucks PA-Chester PA-Delaware PA-
853 AM EST Wed Jan 8 2020

...A SNOW SQUALL WARNING REMAINS IN EFFECT UNTIL 915 AM EST FOR
SOUTHEASTERN BERKS...MONTGOMERY...SOUTHWESTERN BUCKS...NORTHEASTERN
CHESTER AND NORTHERN DELAWARE COUNTIES...

At 853 AM EST, a dangerous snow squall was located over Collegeville,
or 16 miles northeast of West Chester, moving east at 40 mph.

HAZARD...Extremely poor visibility in heavy snow and blowing snow. 
         Wind gusts up to 30 mph.

SOURCE...Radar indicated.

IMPACT...Dangerous life-threatening travel.

This includes the following highways...
 Interstate 476 in Pennsylvania between mile markers 13 and 19.
 Pennsylvania Turnpike near exit 298, and between exits 320 and 333.
 Northeast Extension between exits A20 and A31.
 Interstate 176 in Pennsylvania between mile markers 1 and 11.
 Interstate 76 in Pennsylvania between mile markers 327 and 335.

Locations impacted include...
Reading, Norristown, Pottstown, Phoenixville, Lansdale, West
Norriton, East Norriton, Wyomissing, Conshohocken, Souderton,
Birdsboro, Collegeville, Royersford, Narberth, Chalfont, Sinking
Spring, Trappe, Hatfield, Schwenksville and Elverson.

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 7527 4012 7592 4014 7588 4032 7614
      4031 7520
TIME...MOT...LOC 1353Z 273DEG 37KT 4017 7544 

$$

Staarmann

147 
WWUS51 KPHI 081411
SQWPHI

Snow Squall Warning
National Weather Service Mount Holly NJ
911 AM EST Wed Jan 8 2020

PAC011-017-029-045-091-081421-
/O.EXP.KPHI.SQ.W.0003.000000T0000Z-200108T1415Z/
Berks PA-Montgomery PA-Bucks PA-Chester PA-Delaware PA-
911 AM EST Wed Jan 8 2020

...THE SNOW SQUALL WARNING FOR SOUTHEASTERN BERKS...MONTGOMERY...
SOUTHWESTERN BUCKS...NORTHEASTERN CHESTER AND NORTHERN DELAWARE
COUNTIES WILL EXPIRE AT 915 AM EST...

The snow squall which prompted the warning has weakened. Therefore,
the snow squall warning will be allowed to expire. Roads will remain
slick and hazardous due to icy conditions.

LAT...LON 4001 7527 4012 7592 4014 7588 4032 7614
      4031 7520
TIME...MOT...LOC 1411Z 274DEG 37KT 4016 7521 

$$

Staarmann

Snow Squall Warnings in Pennsylvania, 2020Every snow squall warning in 2020

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.