Alert archive / New Jersey / Extreme Cold Watches in 2026

Extreme Cold Watch 1, NWS Philadelphia/Mount Holly

February 5, 202616 counties in New Jersey; 10 counties in Pennsylvania; Kent County, New Castle County, Sussex County, Delaware

NWS Philadelphia/Mount Holly issued this extreme cold watch at Feb 5, 2026, 12:15 PM EST for 16 counties in New Jersey; 10 counties in Pennsylvania; Kent County, New Castle County, Sussex County, Delaware. It took effect at Feb 7, 2026, 8:00 AM EST. It was in force for .

The area

The counties it named.

The facts

Issued: Feb 5, 2026, 12:15 PM EST (17:15 UTC)
In effect from: Feb 7, 2026, 8:00 AM EST
Expired: Feb 6, 2026, 1:34 AM EST
In force
Issued by: NWS Philadelphia/Mount Holly

All 29 counties

Kent County, DE, New Castle County, DE, Sussex County, DE, Atlantic County, NJ, Burlington County, NJ, Camden County, NJ, Cape May County, NJ, Cumberland County, NJ, Gloucester County, NJ, Hunterdon County, NJ, Mercer County, NJ, Middlesex County, NJ, Monmouth County, NJ, Morris County, NJ, Ocean County, NJ, Salem County, NJ, Somerset County, NJ, Sussex County, NJ, Warren County, NJ, Berks County, PA, Bucks County, PA, Carbon County, PA, Chester County, PA, Delaware County, PA, Lehigh County, PA, Monroe County, PA, Montgomery County, PA, Northampton County, PA, Philadelphia County, PA

The radar

The Philadelphia radar (KDIX), 59 km from the middle of the area, began a volume at 17:18 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

Washington/Dulle, VA (KIAD), launched 12:00Z, 5.3 hours before the alert went out and 238 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1517 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: -11 m²/s²
0-3 km storm-relative helicity: 4 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this extreme cold watch went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Philadelphia/Mount Holly wrote its last area forecast discussion before this extreme cold watch went out at Feb 5, 6:24 AM EST, 5 hours 51 minutes earlier.

Area forecast discussion, Feb 5, 6:24 AM EST, 5 hours 51 minutes before

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Hazardous weather outlook, Feb 5, 5:50 AM EST, 6 hours 25 minutes before

Hazardous Weather Outlook
National Weather Service Mount Holly NJ
550 AM EST Thu Feb 5 2026

MDZ012-015-019-020-061100-
Kent MD-Queen Annes-Talbot-Caroline-
550 AM EST Thu Feb 5 2026

This Hazardous Weather Outlook is for northeast Maryland.

.DAY ONE...Today and tonight.

No hazardous weather is expected at this time.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

DeSilva

The office that day

Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Feb 5, 3:16 AM EST	Heavy Freezing Spray Watch	PHI		23 hr
Feb 5, 12:21 PM EST	High Wind Watch	PHI	Atlantic, Burlington, Cape May, Cumberland, Ocean, Salem	13 hr
Feb 5, 12:23 PM EST	Storm Watch	PHI		13 hr

Nearby

Extreme Cold Watches in New Jersey, 2026 Extreme Cold Watches in Pennsylvania, 2026 Extreme Cold Watches in Delaware, 2026 Every extreme cold watch in 2026

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.