Alert archive / Pennsylvania / Winter Weather Advisories in 2021
Winter Weather Advisory 14, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this winter weather advisory at Dec 28, 2021, 2:48 PM EST for Sussex County, New Jersey; Carbon County, Monroe County, Pennsylvania. It took effect at Dec 28, 2021, 6:00 PM EST. It was in force for 9 hr.
The area
The counties it named.
The facts
- Issued
- Dec 28, 2021, 2:48 PM EST (19:48 UTC)
- In effect from
- Dec 28, 2021, 6:00 PM EST
- Expired
- Dec 29, 2021, 3:14 AM EST
- In force
- 9 hr
- Issued by
- NWS Philadelphia/Mount Holly
Counties Sussex County, NJ, Carbon County, PA, Monroe County, PA
The radar
The Philadelphia radar (KDIX), 140 km from the middle of the area, began a volume at 19:48 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, 7.8 hours before the alert went out and 201 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
- 436 m above ground
- 0-6 km bulk shear
- 95 kt
- 0-1 km storm-relative helicity
- 149 m²/s²
- 0-3 km storm-relative helicity
- 178 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
576 WWUS41 KPHI 281948 WSWPHI URGENT - WINTER WEATHER MESSAGE National Weather Service Mount Holly NJ 248 PM EST Tue Dec 28 2021 NJZ001-PAZ054-055-291200- /O.NEW.KPHI.WW.Y.0014.211228T2300Z-211229T1200Z/ Sussex-Carbon-Monroe- Including the cities of Newton, Jim Thorpe, and Stroudsburg 248 PM EST Tue Dec 28 2021 ...WINTER WEATHER ADVISORY IN EFFECT FROM 6 PM THIS EVENING TO 7 AM EST WEDNESDAY... * WHAT...Light snow and sleet transitioning to light freezing rain and freezing drizzle. Total snow and sleet accumulations of less than an inch. A light glaze of ice is expected. * WHERE...The Pennsylvania counties of Carbon and Monroe, as well as Sussex County in New Jersey. * WHEN...From 6:00 PM this evening until 7:00 AM Wednesday. * IMPACTS...A light glaze of ice may develop on untreated roads and walkways, creating slippery conditions. * ADDITIONAL DETAILS...The potential for freezing and freezing drizzle is confined mainly to locations above 1000 feet in elevation. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use extra caution if traveling tonight. The latest road conditions for your state can be obtained by dialing 5 1 1. && $$ Iovino
2 follow-up statements
063 WWUS41 KPHI 290114 WSWPHI URGENT - WINTER WEATHER MESSAGE National Weather Service Mount Holly NJ 814 PM EST Tue Dec 28 2021 NJZ001-PAZ054-055-291200- /O.CON.KPHI.WW.Y.0014.000000T0000Z-211229T1200Z/ Sussex-Carbon-Monroe- Including the cities of Newton, Jim Thorpe, and Stroudsburg 814 PM EST Tue Dec 28 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL 7 AM EST WEDNESDAY... * WHAT...Periods of light snow and sleet transitioning to light freezing rain and freezing drizzle. Total snow and sleet accumulations of less than an inch. A light glaze of ice is expected. * WHERE...The Pennsylvania counties of Carbon and Monroe, as well as Sussex County in New Jersey. * WHEN...Until 7:00 AM Wednesday. * IMPACTS...A light glaze of ice may develop on untreated roads especially bridges, overpasses and other elevated surfaces, which will result in slippery conditions. * ADDITIONAL DETAILS...The potential for freezing and freezing drizzle is confined mainly to locations above 1000 feet in elevation. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for the state you are calling from can be obtained by calling 5 1 1. && $$ Iovino/Gorse
807 WWUS41 KPHI 290814 WSWPHI URGENT - WINTER WEATHER MESSAGE National Weather Service Mount Holly NJ 314 AM EST Wed Dec 29 2021 NJZ001-PAZ054-055-290915- /O.CAN.KPHI.WW.Y.0014.000000T0000Z-211229T1200Z/ Sussex-Carbon-Monroe- Including the cities of Newton, Jim Thorpe, and Stroudsburg 314 AM EST Wed Dec 29 2021 ...WINTER WEATHER ADVISORY IS CANCELLED... Temperatures are above freezing, and the threat of impactful freezing rain or drizzle has ended. Therefore, the winter weather advisory has been cancelled. $$ CMS
Nearby
Winter Weather Advisories in Pennsylvania, 2021Winter Weather Advisories in New Jersey, 2021Every winter weather advisory in 2021
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.