Alert archive / New Jersey / Snow Squall Warnings in 2020
Snow Squall Warning 6, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this snow squall warning at Jan 8, 2020, 8:48 AM EST for 5 counties in New Jersey. It was in force for 42 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
- Jan 8, 2020, 8:48 AM EST (13:48 UTC)
- Expired
- Jan 8, 2020, 9:30 AM EST
- In force
- 42 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
Counties Hunterdon County, NJ, Middlesex County, NJ, Morris County, NJ, Somerset County, NJ, Warren County, NJ
The radar
The Philadelphia radar (KDIX), 85 km from the middle of the area, began a volume at 13:52 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, 1.8 hours before the alert went out and 131 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
- 864 m above ground
- 0-6 km bulk shear
- 75 kt
- 0-1 km storm-relative helicity
- 35 m²/s²
- 0-3 km storm-relative helicity
- 123 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
585
WWUS51 KPHI 081348
SQWPHI
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Snow Squall Warning
National Weather Service Mount Holly NJ
848 AM EST Wed Jan 8 2020
NJC019-023-027-035-041-081430-
/O.NEW.KPHI.SQ.W.0006.200108T1348Z-200108T1430Z/
Hunterdon NJ-Morris NJ-Warren NJ-Somerset NJ-Middlesex NJ-
848 AM EST Wed Jan 8 2020
The National Weather Service in Mount Holly NJ has issued a
* Snow Squall Warning for...
Northeastern Hunterdon County in northwestern New Jersey...
Morris County in northern New Jersey...
East central Warren County in northwestern New Jersey...
Northern Somerset County in northern New Jersey...
Northeastern Middlesex County in northern New Jersey...
* Until 930 AM EST.
* At 848 AM EST, a dangerous snow squall was located over Califon, or
13 miles northwest of Somerville, moving east at 55 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...
Garden State Parkway between mile markers 131 and 134.
Interstate 287 in New Jersey between mile markers 19 and 48.
Interstate 78 in New Jersey between mile markers 20 and 42.
Interstate 80 in New Jersey between mile markers 26 and 49.
New Jersey Turnpike near exit 13.
Locations impacted include...
Morristown, Carteret, Dover, Madison, Middlesex, Florham Park, East
Hanover, Lincoln Park, Hackettstown, Chatham, Boonton, Wharton,
Washington, Rockaway, Morris Plains, Mount Arlington, Mendham,
Mountain Lakes, High Bridge and Stanhope.
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.
There is no safe place on a highway when a snow squall hits.
Visibility and traction are immediately lost in whiteout conditions,
making it difficult or impossible to slow down and avoid stopped
vehicles. Delay travel or safely exit the highway before the snow
squall arrives.
&&
LAT...LON 4056 7421 4054 7425 4066 7497 4088 7498
4094 7428 4090 7427 4091 7433 4086 7432
4076 7437 4075 7436 4067 7446 4066 7445
4066 7441 4065 7440 4060 7446 4060 7421
TIME...MOT...LOC 1348Z 273DEG 49KT 4071 7479
$$
Staarmann2 follow-up statements
729
WWUS51 KPHI 081402
SQWPHI
Snow Squall Warning
National Weather Service Mount Holly NJ
901 AM EST Wed Jan 8 2020
NJC019-041-081411-
/O.CAN.KPHI.SQ.W.0006.000000T0000Z-200108T1430Z/
Hunterdon NJ-Warren NJ-
901 AM EST Wed Jan 8 2020
...THE SNOW SQUALL WARNING FOR NORTHEASTERN HUNTERDON AND EAST
CENTRAL WARREN COUNTIES IS CANCELLED...
The snow squall which prompted the warning has moved out of the
warned area. Therefore, the snow squall warning has been cancelled.
LAT...LON 4056 7422 4054 7425 4062 7469 4089 7480
4094 7428 4090 7427 4091 7432 4089 7434
4086 7432 4079 7437 4075 7436 4067 7446
4066 7445 4065 7440 4060 7446 4060 7421
4056 7421
TIME...MOT...LOC 1401Z 270DEG 50KT 4072 7451
$$
NJC023-027-035-081430-
/O.CON.KPHI.SQ.W.0006.000000T0000Z-200108T1430Z/
Morris NJ-Somerset NJ-Middlesex NJ-
901 AM EST Wed Jan 8 2020
...A SNOW SQUALL WARNING REMAINS IN EFFECT UNTIL 930 AM EST FOR
MORRIS...NORTHERN SOMERSET AND NORTHEASTERN MIDDLESEX COUNTIES...
At 901 AM EST, a dangerous snow squall was located over Basking
Ridge, or near Morristown, moving east at 55 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...
Garden State Parkway between mile markers 131 and 134.
Interstate 287 in New Jersey between mile markers 19 and 48.
Interstate 78 in New Jersey between mile markers 28 and 41.
Interstate 80 in New Jersey between mile markers 26 and 48.
New Jersey Turnpike near exit 13.
Locations impacted include...
Morristown, Carteret, Dover, Madison, Middlesex, Florham Park, East
Hanover, Lincoln Park, Chatham, Boonton, Wharton, Rockaway, Morris
Plains, Mount Arlington, Mendham, Mountain Lakes, Netcong, Peapack
And Gladstone, Chester and Victory Gardens.
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.
There is no safe place on a highway when a snow squall hits.
Visibility and traction are immediately lost in whiteout conditions,
making it difficult or impossible to slow down and avoid stopped
vehicles. Delay travel or safely exit the highway before the snow
squall arrives.
&&
LAT...LON 4056 7422 4054 7425 4062 7469 4089 7480
4094 7428 4090 7427 4091 7432 4089 7434
4086 7432 4079 7437 4075 7436 4067 7446
4066 7445 4065 7440 4060 7446 4060 7421
4056 7421
TIME...MOT...LOC 1401Z 270DEG 50KT 4072 7451
$$
Staarmann402
WWUS51 KPHI 081422
SQWPHI
Snow Squall Warning
National Weather Service Mount Holly NJ
922 AM EST Wed Jan 8 2020
NJC023-027-035-081432-
/O.EXP.KPHI.SQ.W.0006.000000T0000Z-200108T1430Z/
Morris NJ-Somerset NJ-Middlesex NJ-
922 AM EST Wed Jan 8 2020
...THE SNOW SQUALL WARNING FOR MORRIS...NORTHERN SOMERSET AND
NORTHEASTERN MIDDLESEX COUNTIES WILL EXPIRE AT 930 AM EST...
The snow squall which prompted the warning has exited the area.
Therefore, the snow squall warning will be allowed to expire. Roads
will remain slick and hazardous due to icy conditions.
LAT...LON 4056 7422 4054 7425 4062 7469 4089 7480
4094 7428 4090 7427 4091 7432 4089 7434
4086 7432 4079 7437 4075 7436 4067 7446
4066 7445 4065 7440 4060 7446 4060 7421
4056 7421
TIME...MOT...LOC 1422Z 273DEG 49KT 4071 7420
$$
StaarmannThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 8, 7:49 AM EST | Snow Squall Warning | PHI | Warren | 41 min |
| Jan 8, 8:28 AM EST | Snow Squall Warning | PHI | Cumberland, Gloucester, Salem | 47 min |
| Jan 8, 8:30 AM EST | Snow Squall Warning | PHI | Sussex, Warren | 45 min |
| Jan 8, 9:14 AM EST | Snow Squall Warning | PHI | Atlantic, Burlington, Camden, Cumberland, Gloucester, Salem | 46 min |
| Jan 8, 9:57 AM EST | Special Weather Statement | PHI | Atlantic | 33 min |
| Jan 8, 12:49 PM EST | Snow Squall Warning | PHI | Burlington, Camden | 26 min |
| Jan 8, 1:08 PM EST | Snow Squall Warning | PHI | Burlington, Camden | 37 min |
| Jan 8, 1:48 PM EST | Snow Squall Warning | PHI | Sussex, Warren | 42 min |
| Jan 8, 2:10 PM EST | Special Weather Statement | PHI | Sussex | 35 min |
| Jan 8, 2:18 PM EST | Snow Squall Warning | PHI | Morris, Sussex | 42 min |
| Jan 8, 2:32 PM EST | Special Weather Statement | PHI | Morris, Warren | 28 min |
| Jan 8, 3:05 PM EST | Special Weather Statement | PHI | Hunterdon, Morris, Somerset, Warren | 40 min |
| Jan 8, 4:24 PM EST | Special Weather Statement | PHI | Warren | 36 min |
| Jan 8, 6:10 PM EST | Small Craft Advisory | PHI | 13 hr |
Nearby
Snow 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.