Alert archive / Pennsylvania / Frost Advisories in 2009
Frost Advisory 5, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this frost advisory at May 31, 2009, 1:55 PM EDT for Carbon County, Monroe County, Pennsylvania; Sussex County, New Jersey. It took effect at Jun 1, 2009, 12:00 AM EDT. It was in force for 7 hr.
The area
The counties it named.
The facts
- Issued
- May 31, 2009, 1:55 PM EDT (17:55 UTC)
- In effect from
- Jun 1, 2009, 12:00 AM EDT
- Expired
- Jun 1, 2009, 7:00 AM EDT
- In force
- 7 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 17:57 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, 5.9 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
- 2390 m above ground
- 0-6 km bulk shear
- 58 kt
- 0-1 km storm-relative helicity
- 68 m²/s²
- 0-3 km storm-relative helicity
- 118 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 311755 NPWPHI URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 155 PM EDT SUN MAY 31 2009 ...VERY COOL AIR WILL MOVE OVER THE REGION AND CAUSE SCATTERED FROST IN THE POCONOS AND NORTHWEST NEW JERSEY TONIGHT... NJZ001-PAZ054-055-010800- /O.NEW.KPHI.FR.Y.0005.090601T0400Z-090601T1100Z/ SUSSEX-CARBON-MONROE- INCLUDING THE CITIES OF...NEWTON...JIM THORPE...STROUDSBURG 155 PM EDT SUN MAY 31 2009 ...FROST ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 7 AM EDT MONDAY... THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY HAS ISSUED A FROST ADVISORY...WHICH IS IN EFFECT FROM MIDNIGHT TONIGHT TO 7 AM EDT MONDAY. COOL DRY AIR WILL OVERSPREAD THE REGION TONIGHT. THIS COOL AIR COMBINED WITH CLEAR SKIES AND WINDS THAT WILL BECOME LIGHT WILL CAUSE TEMPERATURES TO DROP TO THE MIDDLE AND UPPER 30S AND IN TURN WILL CAUSE SCATTERED FROST TO FORM. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FROST ADVISORY MEANS THAT FROST IS POSSIBLE. SENSITIVE OUTDOOR PLANTS MAY BE KILLED IF LEFT UNCOVERED. && $$ RNS
2 follow-up statements
000 WWUS71 KPHI 010740 NPWPHI URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 340 AM EDT MON JUN 1 2009 NJZ001-PAZ054-055-011100- /O.CON.KPHI.FR.Y.0005.000000T0000Z-090601T1100Z/ SUSSEX-CARBON-MONROE- INCLUDING THE CITIES OF...NEWTON...JIM THORPE...STROUDSBURG 340 AM EDT MON JUN 1 2009 ...FROST ADVISORY REMAINS IN EFFECT UNTIL 7 AM EDT THIS MORNING... A FROST ADVISORY REMAINS IN EFFECT UNTIL 700 AM. A CLEAR SKY AND A LIGHT WIND HAVE ALLOWED TEMPERATURES TO DROP INTO THE UPPER 30S AND LOWER 40S EARLY THIS MORNING IN PARTS OF THE POCONO REGION OF PENNSYLVANIA AND IN SUSSEX COUNTY, NEW JERSEY. THE COLD TEMPERATURES COULD ALLOW PATCHY FROST TO DEVELOP. ONCE THE SUN RISES, TEMPERATURES WILL BEGIN TO RECOVER QUICKLY. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FROST ADVISORY MEANS THAT FROST IS POSSIBLE. SENSITIVE OUTDOOR PLANTS MAY BE HARMED IF LEFT UNPROTECTED. && $$ IOVINO
000 WWUS71 KPHI 011054 NPWPHI URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 654 AM EDT MON JUN 1 2009 NJZ001-PAZ054-055-011200- /O.EXP.KPHI.FR.Y.0005.000000T0000Z-090601T1100Z/ SUSSEX-CARBON-MONROE- INCLUDING THE CITIES OF...NEWTON...JIM THORPE...STROUDSBURG 654 AM EDT MON JUN 1 2009 ...FROST ADVISORY WILL EXPIRE AT 7 AM EDT THIS MORNING... THE FROST ADVISORY WILL EXPIRE AT 7 AM EDT THIS MORNING. THE FROST ADVISORY FOR CARBON AND MONROE COUNTIES IS PENNSYLVANIA AND SUSSEX COUNTY IN NEW JERSEY WILL BE ALLOWED TO EXPIRE AT 7AM EDT. TEMPERATURES HOVER IN THE UPPER 30S ACROSS THE REGION AT THIS TIME BUT AS THE SUN CONTINUES TO RISE THIS MORNING, TEMPERATURES WILL BEGIN TO REBOUND. $$
The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 31, 8:26 AM EDT | Special Marine Warning | PHI | 54 min |
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.