Alert archive / New Jersey / Winter Weather Advisories in 2019
Winter Weather Advisory 11, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this winter weather advisory at Feb 19, 2019, 2:55 PM EST for 16 counties in New Jersey; 8 counties in Pennsylvania; Kent County, New Castle County, Sussex County, Delaware. It took effect at Feb 20, 2019, 7:00 AM EST. It was in force for 20 hr.
The area
The counties it named.
The facts
- Issued
- Feb 19, 2019, 2:55 PM EST (19:55 UTC)
- In effect from
- Feb 20, 2019, 7:00 AM EST
- Expired
- Feb 21, 2019, 3:25 AM EST
- In force
- 20 hr
- Issued by
- NWS Philadelphia/Mount Holly
All 27 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, Bucks County, PA, Carbon 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), 55 km from the middle of the area, began a volume at 19:59 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, 7.9 hours before the alert went out and 242 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
- 1714 m above ground
- 0-6 km bulk shear
- 97 kt
- 0-1 km storm-relative helicity
- -90 m²/s²
- 0-3 km storm-relative helicity
- 67 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this winter weather advisory 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 winter weather advisory went out at Feb 19, 9:20 AM EST, 5 hours 35 minutes earlier.
Area forecast discussion, Feb 19, 9:20 AM EST, 5 hours 35 minutes before
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</html>Hazardous weather outlook, Feb 19, 3:43 AM EST, 11 hours 12 minutes before
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</html>The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 19, 3:30 PM EST | Small Craft Advisory | PHI | 51 hr | |
| Feb 19, 2:55 PM EST | Winter Storm Warning | PHI | Berks, Chester, Montgomery | 34 hr |
Nearby
Winter Weather Advisories in New Jersey, 2019Winter Weather Advisories in Pennsylvania, 2019Winter Weather Advisories in Delaware, 2019Every winter weather advisory 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.