Alert archive / Pennsylvania / Freeze Warnings in 2021
Freeze Warning 2, NWS State College, PA
NWS State College, PA issued this freeze warning at Apr 22, 2021, 1:06 PM EDT for 16 counties in Pennsylvania. It took effect at Apr 23, 2021, 1:00 AM EDT. It was in force for 8 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Apr 22, 2021, 1:06 PM EDT (17:06 UTC)
- In effect from
- Apr 23, 2021, 1:00 AM EDT
- Expired
- Apr 23, 2021, 9:00 AM EDT
- In force
- 8 hr
- Issued by
- NWS State College, PA
Counties Adams County, PA, Cumberland County, PA, Dauphin County, PA, Franklin County, PA, Fulton County, PA, Huntingdon County, PA, Juniata County, PA, Lancaster County, PA, Lebanon County, PA, Mifflin County, PA, Montour County, PA, Northumberland County, PA, Perry County, PA, Snyder County, PA, Union County, PA, York County, PA
The radar
The State College radar (KCCX), 94 km from the middle of the area, began a volume at 17:07 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, 5.1 hours before the alert went out and 161 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
- 1530 m above ground
- 0-6 km bulk shear
- 65 kt
- 0-1 km storm-relative helicity
- 115 m²/s²
- 0-3 km storm-relative helicity
- 113 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
192 WWUS71 KCTP 221706 NPWCTP URGENT - WEATHER MESSAGE National Weather Service State College PA 106 PM EDT Thu Apr 22 2021 PAZ026>028-035-036-049>052-056-057-059-063>066-231300- /O.UPG.KCTP.FZ.A.0002.210423T0500Z-210423T1300Z/ /O.NEW.KCTP.FZ.W.0002.210423T0500Z-210423T1300Z/ Huntingdon-Mifflin-Juniata-Fulton-Franklin-Union-Snyder-Montour- Northumberland-Perry-Dauphin-Lebanon-Cumberland-Adams-York- Lancaster- Including the cities of Huntingdon, Mount Union, Lewistown, Mifflintown, McConnellsburg, Chambersburg, Lewisburg, Selinsgrove, Danville, Sunbury, Shamokin, Newport, Harrisburg, Hershey, Lebanon, Carlisle, Gettysburg, York, and Lancaster 106 PM EDT Thu Apr 22 2021 ...FREEZE WARNING IN EFFECT FROM 1 AM TO 9 AM EDT FRIDAY... * WHAT...Sub-freezing temperatures expected. * WHERE...Portions of south central Pennsylvania. * WHEN...From 1 AM to 9 AM EDT Friday. * IMPACTS...Freeze conditions will kill crops and other sensitive vegetation. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take protective measures now as freezing temperatures could damage or kill tender plants and vegetation. Potted plants should be brought inside. && $$ MS/DM/JB For more information from the National Weather Service visit http://weather.gov/ctp
1 follow-up statement
418 WWUS71 KCTP 231308 NPWCTP URGENT - WEATHER MESSAGE National Weather Service State College PA 908 AM EDT Fri Apr 23 2021 PAZ026>028-035-036-049>052-056-057-059-063>066-231415- /O.EXP.KCTP.FZ.W.0002.000000T0000Z-210423T1300Z/ Huntingdon-Mifflin-Juniata-Fulton-Franklin-Union-Snyder-Montour- Northumberland-Perry-Dauphin-Lebanon-Cumberland-Adams-York- Lancaster- Including the cities of Huntingdon, Mount Union, Lewistown, Mifflintown, McConnellsburg, Chambersburg, Lewisburg, Selinsgrove, Danville, Sunbury, Shamokin, Newport, Harrisburg, Hershey, Lebanon, Carlisle, Gettysburg, York, and Lancaster 908 AM EDT Fri Apr 23 2021 ...FREEZE WARNING HAS EXPIRED... Temperatures are above freezing and will rebound nicely into the lower 60s this afternoon. $$ For more information from the National Weather Service visit http://weather.gov/ctp
The office that day
Everything else NWS State College, PA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 22, 2:33 AM EDT | Special Weather Statement | CTP | Cambria | 87 min |
| Apr 22, 4:04 AM EDT | Special Weather Statement | CTP | Bedford | 86 min |
| Apr 22, 4:09 AM EDT | Special Weather Statement | CTP | Bedford | 81 min |
| Apr 22, 9:16 AM EDT | Freeze Watch | CTP | Adams, Cumberland, Dauphin, Franklin, Fulton, Huntingdon and 10 more | 4 hr |
Nearby
Freeze Warnings in Pennsylvania, 2021Every freeze warning 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.