Alert archive / Pennsylvania / Snow Squall Warnings in 2020
Snow Squall Warning 16, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this snow squall warning at Feb 29, 2020, 11:05 AM EST for 4 counties in Pennsylvania; Morris County, Sussex County, Warren County, New Jersey. It was in force for 55 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Feb 29, 2020, 11:05 AM EST (16:05 UTC)
- Expired
- Feb 29, 2020, 12:00 PM EST
- In force
- 55 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
Counties Morris County, NJ, Sussex County, NJ, Warren County, NJ, Carbon County, PA, Lehigh County, PA, Monroe County, PA, Northampton County, PA
The radar
The Philadelphia radar (KDIX), 133 km from the middle of the area, began a volume at 16:04 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.
The nearest sounding before it
Brookhaven, NY (KOKX), launched 12:00Z, 4.1 hours before the alert went out and 182 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1458 m above ground
- 0-6 km bulk shear
- 53 kt
- 0-1 km storm-relative helicity
- -15 m²/s²
- 0-3 km storm-relative helicity
- 51 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
740
WWUS51 KPHI 291606
SQWPHI
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Snow Squall Warning
National Weather Service Mount Holly NJ
1105 AM EST Sat Feb 29 2020
NJC027-037-041-PAC025-077-089-095-291700-
/O.NEW.KPHI.SQ.W.0016.200229T1605Z-200229T1700Z/
Morris NJ-Sussex NJ-Warren NJ-Lehigh PA-Carbon PA-Monroe PA-
Northampton PA-
1105 AM EST Sat Feb 29 2020
The National Weather Service in Mount Holly NJ has issued a
* Snow Squall Warning for...
Northern Morris County in northern New Jersey...
Sussex County in northwestern New Jersey...
Northern Warren County in northwestern New Jersey...
Northwestern Lehigh County in eastern Pennsylvania...
Carbon County in northeastern Pennsylvania...
Monroe County in northeastern Pennsylvania...
Northern Northampton County in eastern Pennsylvania...
* Until noon EST.
* At 1105 AM EST, a dangerous snow squall was located along a line
extending from near Unionville to near Bushkill to near White
Haven, moving southeast at 25 mph.
HAZARD...Poor visibility in snow and blowing snow. Wind gusts up
to 30 mph.
SOURCE...Radar and webcams.
IMPACT...Expect hazardous road conditions.
* This includes the following highways...
Interstate 80 in New Jersey between mile markers 0 and 35.
Interstate 80 in Pennsylvania between mile markers 287 and 314.
Northeast Extension between exits A74 and A87.
Interstate 380 in Pennsylvania between mile markers 0 and 2.
Locations impacted include...
Newton, Lehighton, Montague, Mount Pocono, Hopatcong, East
Stroudsburg, Hackettstown, Wharton, Blairstown, Palmerton, Bangor,
Mount Arlington, Franklin, Jim Thorpe, Slatington, Stanhope, Pen
Argyl, Nesquehoning, Hamburg and Netcong.
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 4120 7437 4110 7449 4104 7450 4105 7445
4101 7437 4101 7435 4090 7457 4070 7578
4072 7580 4074 7576 4091 7599 4101 7573
4103 7574 4105 7576 4115 7515 4109 7501
4116 7490 4128 7484 4135 7475 4136 7469
TIME...MOT...LOC 1605Z 304DEG 22KT 4138 7457 4115 7502 4101 7580
$$
Staarmann1 follow-up statement
362
WWUS51 KPHI 291649
SQWPHI
Snow Squall Warning
National Weather Service Mount Holly NJ
1149 AM EST Sat Feb 29 2020
NJC027-037-041-PAC025-077-089-095-291700-
/O.CON.KPHI.SQ.W.0016.000000T0000Z-200229T1700Z/
Morris NJ-Sussex NJ-Warren NJ-Lehigh PA-Carbon PA-Monroe PA-
Northampton PA-
1149 AM EST Sat Feb 29 2020
...A SNOW SQUALL WARNING REMAINS IN EFFECT UNTIL NOON EST FOR
NORTHERN MORRIS...CENTRAL SUSSEX...NORTHERN WARREN...NORTHWESTERN
LEHIGH...SOUTHEASTERN CARBON...SOUTHWESTERN MONROE AND NORTHERN
NORTHAMPTON COUNTIES...
At 1149 AM EST, a dangerous snow squall was located along a line
extending from near Highland Lake to near Andover to near
Danielsville, moving southeast at 25 mph.
HAZARD...Poor visibility in snow and blowing snow. Wind gusts up to
30 mph.
SOURCE...Radar and webcams.
IMPACT...Expect hazardous road conditions.
This includes the following highways...
Interstate 80 in New Jersey between mile markers 0 and 35.
Interstate 80 in Pennsylvania between mile markers 310 and 311.
Northeast Extension near exit A74.
Locations impacted include...
Newton, Lehighton, Hopatcong, East Stroudsburg, Hackettstown,
Wharton, Blairstown, Palmerton, Bangor, Mount Arlington, Franklin,
Jim Thorpe, Slatington, Stanhope, Pen Argyl, Hamburg, Netcong, Wind
Gap, Belvidere and Ogdensburg.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Consider avoiding or delaying travel until the snow squall passes
your location. If you must travel, use extra caution and allow extra
time. Rapid changes in visibility and slick road conditions may lead
to accidents.
&&
LAT...LON 4077 7580 4083 7579 4091 7571 4104 7483
4127 7460 4120 7437 4110 7449 4104 7450
4105 7445 4101 7437 4101 7435 4090 7457
4070 7578 4072 7580 4074 7576
TIME...MOT...LOC 1649Z 306DEG 22KT 4116 7443 4095 7478 4081 7556
$$
StaarmannThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 29, 10:21 AM EST | Snow Squall Warning | PHI | Carbon, Monroe | 39 min |
| Feb 29, 12:50 PM EST | Special Weather Statement | PHI | Warren | 25 min |
| Feb 29, 1:09 PM EST | Special Weather Statement | PHI | Morris | 36 min |
| Feb 29, 1:29 PM EST | Special Weather Statement | PHI | Warren | 46 min |
Nearby
Snow Squall Warnings in Pennsylvania, 2020Snow Squall Warnings in New Jersey, 2020Every snow squall warning in 2020
Sources
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.