Alert archive / Pennsylvania / Frost Advisories in 2009
Frost Advisory 6, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this frost advisory at Sep 19, 2009, 3:27 PM EDT for Sussex County, New Jersey; Carbon County, Monroe County, Pennsylvania. It took effect at Sep 20, 2009, 3:00 AM EDT. It was in force for 5 hr.
The area
The counties it named.
The facts
- Issued
- Sep 19, 2009, 3:27 PM EDT (19:27 UTC)
- In effect from
- Sep 20, 2009, 3:00 AM EDT
- Expired
- Sep 20, 2009, 8:00 AM EDT
- In force
- 5 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 19:31 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, 7.5 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
- 1205 m above ground
- 0-6 km bulk shear
- 50 kt
- 0-1 km storm-relative helicity
- -14 m²/s²
- 0-3 km storm-relative helicity
- 23 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WWUS71 KPHI 191927 NPWPHI URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 327 PM EDT SAT SEP 19 2009 NJZ001-PAZ054-055-201200- /O.NEW.KPHI.FR.Y.0006.090920T0700Z-090920T1200Z/ SUSSEX-CARBON-MONROE- INCLUDING THE CITIES OF...NEWTON...JIM THORPE...STROUDSBURG 327 PM EDT SAT SEP 19 2009 ...FROST ADVISORY IN EFFECT FROM 3 AM TO 8 AM EDT SUNDAY... THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY HAS ISSUED A FROST ADVISORY...WHICH IS IN EFFECT FROM 3 AM TO 8 AM EDT SUNDAY. A LARGE AREA OF HIGH PRESSURE WITH COLD DRY AIR WILL MOVE ACROSS THE REGION TONIGHT. SKIES WILL BE CLEAR AND WINDS WILL BE LIGHT... AND TEMPERATURES OVER THE HIGHER ELEVATIONS AND IN THE COLDER INTERIOR VALLEYS WILL APPROACH THE FREEZING MARK. THIS WILL LEAD TO AREAS OF FROST. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FROST ADVISORY MEANS THAT FROST IS POSSIBLE. SENSITIVE OUTDOOR PLANTS MAY BE KILLED IF LEFT UNCOVERED. && $$ MPD
1 follow-up statement
000 WWUS71 KPHI 201155 NPWPHI URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 755 AM EDT SUN SEP 20 2009 NJZ001-PAZ054-055-201300- /O.EXP.KPHI.FR.Y.0006.000000T0000Z-090920T1200Z/ SUSSEX-CARBON-MONROE- INCLUDING THE CITIES OF...NEWTON...JIM THORPE...STROUDSBURG 755 AM EDT SUN SEP 20 2009 ...FROST ADVISORY WILL EXPIRE AT 8 AM EDT THIS MORNING... THE FROST ADVISORY WILL EXPIRE AT 8 AM EDT THIS MORNING. TEMPERATURES WILL CONTINUE TO CLIMB THROUGH THE 30S AND 40S EARLY THIS MORNING, THEREFORE THE FROST ADVISORY WILL BE ALLOWED TO EXPIRE AT 8 AM. $$ GORSE
Nearby
Frost Advisories in Pennsylvania, 2009Frost Advisories in New Jersey, 2009Every frost advisory in 2009
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.