Alert archive / New Jersey / Snow Squall Warnings in 2019
Snow Squall Warning 2, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this snow squall warning at Jan 30, 2019, 2:21 PM EST for 7 counties in New Jersey; Monroe County, Northampton County, Pennsylvania. It was in force for 54 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 30, 2019, 2:21 PM EST (19:21 UTC)
- Expired
- Jan 30, 2019, 3:15 PM EST
- In force
- 54 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
Counties Hunterdon County, NJ, Middlesex County, NJ, Morris County, NJ, Passaic County, NJ, Somerset County, NJ, Sussex County, NJ, Warren County, NJ, Monroe County, PA, Northampton County, PA
The radar
The Philadelphia radar (KDIX), 99 km from the middle of the area, began a volume at 19:20 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, 7.4 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
- 920 m above ground
- 0-6 km bulk shear
- 85 kt
- 0-1 km storm-relative helicity
- -173 m²/s²
- 0-3 km storm-relative helicity
- 111 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
055
WWUS51 KPHI 301924
SQWPHI
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Snow Squall Warning
National Weather Service Mount Holly NJ
Issued by National Weather Service Baltimore MD/Washington DC
221 PM EST Wed Jan 30 2019
NJC019-023-027-031-035-037-041-PAC089-095-302015-
/O.NEW.KPHI.SQ.W.0002.190130T1921Z-190130T2015Z/
Morris NJ-Hunterdon NJ-Passaic NJ-Sussex NJ-Warren NJ-Somerset NJ-
Middlesex NJ-Monroe PA-Northampton PA-
221 PM EST Wed Jan 30 2019
The National Weather Service in Mount Holly NJ has issued a
* Snow Squall Warning for...
Morris County in northern New Jersey...
Northeastern Hunterdon County in northwestern New Jersey...
Passaic County in northeastern New Jersey...
Sussex County in northwestern New Jersey...
Warren County in northwestern New Jersey...
Northern Somerset County in northern New Jersey...
Northeastern Middlesex County in northern New Jersey...
Southeastern Monroe County in northeastern Pennsylvania...
Northeastern Northampton County in eastern Pennsylvania...
* Until 315 PM EST.
* At 221 PM EST, a dangerous snow squall was located along a line
extending from Highland Lake to Hampton, moving east at 40 mph.
HAZARD...Whiteout conditions. Zero visibility in snow and blowing
snow. Wind gusts up to 30 mph.
SOURCE...Radar indicated.
IMPACT...Dangerous life-threatening travel.
This will impact portions of Interstates 78, 80, 280, 287 and state
route 24.
Locations impacted include...
Perth Amboy, Morristown, Newton, Bridgewater, Carteret, Dover,
Madison, Hopatcong, Middlesex, Florham Park, East Hanover, Lincoln
Park, Bound Brook, Kinnelon, Hackettstown, Chatham, Boonton, Butler,
Wharton and Washington.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Reduce your speed and turn on headlights! During snow squalls, the
visibility may suddenly drop to near zero in whiteout conditions.
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.
Wet roadways will quickly freeze. Black ice will cause untreated
roads, bridges and overpasses to become slick and dangerous. Slow
down and be prepared for sudden loss of traction.
&&
LAT...LON 4057 7421 4051 7426 4077 7543 4134 7466
4120 7437 4109 7450 4104 7450 4105 7445
4102 7443 4100 7430 4091 7427 4090 7433
4086 7432 4079 7437 4075 7436 4067 7446
4065 7445 4067 7440 4060 7446 4059 7420
TIME...MOT...LOC 1921Z 267DEG 34KT 4120 7447 4070 7500
$$
SMZThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 29, 9:08 PM EST | Wind Chill Advisory | PHI | Atlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 10 more | 37 hr |
| Jan 30, 3:32 AM EST | Wind Advisory | PHI | Atlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 10 more | 17 hr |
| Jan 30, 1:08 PM EST | Special Weather Statement | PHI | Hunterdon, Mercer, Middlesex, Morris, Somerset, Sussex and 1 more | 82 min |
| Jan 30, 2:04 PM EST | Special Weather Statement | PHI | Burlington, Camden, Gloucester, Salem | 3 hr |
| Jan 30, 2:05 PM EST | Snow Squall Warning | PHI | Burlington, Camden, Gloucester, Hunterdon, Mercer, Salem and 2 more | 55 min |
| Jan 30, 2:12 PM EST | Special Weather Statement | PHI | Hunterdon, Mercer, Middlesex, Morris, Somerset, Sussex and 1 more | 3 hr |
| Jan 30, 2:42 PM EST | Snow Squall Warning | PHI | Atlantic, Burlington, Camden, Gloucester, Hunterdon, Mercer and 4 more | 93 min |
| Jan 30, 5:00 PM EST | Heavy Freezing Spray Advisory | PHI | 17 hr | |
| Jan 30, 5:51 AM EST | Wind Chill Warning | PHI | Carbon, Monroe | 34 hr |
| Jan 30, 11:50 AM EST | Special Weather Statement | PHI | Berks | 55 min |
| Jan 30, 12:32 PM EST | Special Weather Statement | PHI | Bucks, Carbon, Chester, Lehigh, Monroe, Montgomery and 1 more | 58 min |
| Jan 30, 1:24 PM EST | Special Weather Statement | PHI | Bucks, Chester, Delaware, Montgomery, Philadelphia | 3 hr |
| Jan 30, 1:37 PM EST | Special Weather Statement | PHI | Berks, Carbon, Lehigh, Monroe, Northampton | 113 min |
Nearby
Snow Squall Warnings in New Jersey, 2019Snow Squall Warnings in Pennsylvania, 2019Every snow squall warning in 2019
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.