Alert archive / New Jersey / Snow Squall Warnings in 2020
Snow Squall Warning 13, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this snow squall warning at Jan 16, 2020, 1:53 PM EST for 4 counties in New Jersey. It was in force for 23 min. 1 report came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Jan 16, 2020, 1:53 PM EST (18:53 UTC)
- Expired
- Jan 16, 2020, 2:16 PM EST
- In force
- 23 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
Counties Morris County, NJ, Somerset County, NJ, Sussex County, NJ, Warren County, NJ
The radar
The Philadelphia radar (KDIX), 98 km from the middle of the area, began a volume at 18:53 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jan 16, 2:09 PM EST | NON-TSTM WND DMG | 1 Ese Denville, NJ | DOWNED TREE ON STATE HIGHWAY 53 NEAR STATE HIGHWAY 10. SEVERAL LANES WERE CLOSED. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Brookhaven, NY (KOKX), launched 12:00Z, 6.9 hours before the alert went out and 130 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
- 466 m above ground
- 0-6 km bulk shear
- 85 kt
- 0-1 km storm-relative helicity
- 264 m²/s²
- 0-3 km storm-relative helicity
- 357 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
419
WWUS51 KPHI 161853
SQWPHI
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Snow Squall Warning
National Weather Service Mount Holly NJ
153 PM EST Thu Jan 16 2020
NJC027-035-037-041-161930-
/O.NEW.KPHI.SQ.W.0013.200116T1853Z-200116T1930Z/
Morris NJ-Sussex NJ-Warren NJ-Somerset NJ-
153 PM EST Thu Jan 16 2020
The National Weather Service in Mount Holly NJ has issued a
* Snow Squall Warning for...
Morris County in northern New Jersey...
Southwestern Sussex County in northwestern New Jersey...
Northeastern Warren County in northwestern New Jersey...
Northeastern Somerset County in northern New Jersey...
* Until 230 PM EST.
* At 153 PM EST, a dangerous snow squall was located along a line
extending from Wayne to Dover to near Hope, moving southeast at 50
mph.
HAZARD...Poor visibility in heavy snow and blowing snow. Wind
gusts greater than 30 mph.
SOURCE...Radar indicated.
IMPACT...Dangerous life-threatening travel.
* This includes the following highways...
Interstate 287 in New Jersey between mile markers 26 and 54.
Interstate 78 in New Jersey between mile markers 37 and 42.
Interstate 80 in New Jersey between mile markers 13 and 48.
Locations impacted include...
Morristown, Dover, Madison, Hopatcong, Florham Park, East Hanover,
Lincoln Park, Kinnelon, Hackettstown, Chatham, Boonton, Butler,
Wharton, Rockaway, Blairstown, Morris Plains, Mount Arlington,
Mendham, Mountain Lakes 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.
Reduce your speed and turn on headlights! During snow squalls, the
visibility may suddenly drop to near zero in whiteout conditions.
&&
LAT...LON 4090 7427 4091 7433 4083 7433 4076 7438
4075 7436 4067 7446 4066 7445 4066 7440
4063 7442 4063 7452 4100 7507 4102 7440
4100 7430 4097 7428 4092 7429
TIME...MOT...LOC 1853Z 311DEG 45KT 4095 7422 4090 7455 4092 7492
$$
Robertson1 follow-up statement
126
WWUS51 KPHI 161918
SQWPHI
Snow Squall Warning
National Weather Service Mount Holly NJ
216 PM EST Thu Jan 16 2020
NJC027-035-037-041-161926-
/O.CAN.KPHI.SQ.W.0013.000000T0000Z-200116T1930Z/
Morris NJ-Sussex NJ-Warren NJ-Somerset NJ-
216 PM EST Thu Jan 16 2020
...THE SNOW SQUALL WARNING FOR MORRIS...SOUTHWESTERN SUSSEX...
NORTHEASTERN WARREN AND NORTHEASTERN SOMERSET COUNTIES IS
CANCELLED...
The snow squall which prompted the warning has weakened. Therefore,
the snow squall warning has been cancelled. Areas of snow and
blowing snow will continue to make travel difficult so a Special
Weather Statement will likely be issued.
LAT...LON 4090 7427 4091 7433 4083 7433 4076 7438
4075 7436 4067 7446 4066 7445 4066 7440
4063 7442 4063 7452 4100 7507 4102 7440
4100 7430 4097 7428 4092 7429
TIME...MOT...LOC 1912Z 311DEG 45KT 4079 7398 4074 7431 4076 7468
$$
RobertsonThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 16, 1:39 PM EST | Special Weather Statement | PHI | Morris, Sussex, Warren | 21 min |
| Jan 16, 2:19 PM EST | Special Weather Statement | PHI | Hunterdon, Middlesex, Morris, Somerset, Warren | 26 min |
| Jan 16, 4:18 PM EST | Snow Squall Warning | PHI | Warren | 45 min |
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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.