Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 69, NWS State College, PA
NWS State College, PA issued this severe thunderstorm warning at Jul 1, 2021, 1:15 PM EDT for Lancaster County, York County, Pennsylvania. It was in force for 45 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Jul 1, 2021, 1:15 PM EDT (17:15 UTC)
- Expired
- Jul 1, 2021, 2:00 PM EDT
- In force
- 45 min
- Issued by
- NWS State College, PA
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Lancaster County, PA, York County, PA
The radar
The Sterling radar (KLWX), 138 km from the middle of the area, began a volume at 17:16 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, 5.3 hours before the alert went out and 137 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
- 604 J/kg
- Mixed-layer CIN
- -48 J/kg
- Mixed-layer LCL
- 928 m above ground
- 0-6 km bulk shear
- 32 kt
- 0-1 km storm-relative helicity
- 61 m²/s²
- 0-3 km storm-relative helicity
- 108 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 1.2
The text
As transmitted.
123
WUUS51 KCTP 011715
SVRCTP
PAC071-133-011800-
/O.NEW.KCTP.SV.W.0069.210701T1715Z-210701T1800Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service State College PA
115 PM EDT Thu Jul 1 2021
The National Weather Service in State College PA has issued a
* Severe Thunderstorm Warning for...
West central Lancaster County in south central Pennsylvania...
Central York County in south central Pennsylvania...
* Until 200 PM EDT.
* At 115 PM EDT, a severe thunderstorm was located over Manchester,
moving east at 30 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
* This severe thunderstorm will be near...
York, Mount Wolf, Manchester, Valley View and Grantley around 120
PM EDT.
Bainbridge, Hallam, Yorklyn, Stonybrook-Wilshire, East York and
Tyler Run-Queens Gate around 130 PM EDT.
Mount Joy, Wrightsville, Marietta, Maytown, Yorkana and Rheems
around 140 PM EDT.
Columbia, Mountville and Salunga-Landisville around 150 PM EDT.
Other locations impacted by this severe thunderstorm include York
Haven, Washington Boro, East Prospect, Newberrytown, York College Of
Pennsylvania and Penn State York.
This includes Interstate 83 from mile markers 14 to 32.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3999 7699 4014 7680 4014 7674 4012 7672
4014 7671 4015 7629 3987 7653
TIME...MOT...LOC 1715Z 272DEG 25KT 4005 7677
HAIL...<.75IN
WIND...60MPH
$$
Dangelo2 follow-up statements
166 WWUS51 KCTP 011740 SVSCTP Severe Weather Statement National Weather Service State College PA 140 PM EDT Thu Jul 1 2021 PAC071-133-011800- /O.CON.KCTP.SV.W.0069.000000T0000Z-210701T1800Z/ Lancaster PA-York PA- 140 PM EDT Thu Jul 1 2021 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 200 PM EDT FOR WEST CENTRAL LANCASTER AND CENTRAL YORK COUNTIES... At 139 PM EDT, a severe thunderstorm was located between Emigsville and Marietta, moving east at 30 mph. HAZARD...60 mph wind gusts. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees. This severe storm will be near... Mount Joy, Hallam, and Wrightsville around 140 PM EDT. Columbia, Mountville and Salunga-Landisville around 150 PM EDT. East Petersburg around 200 PM EDT. Other locations impacted by this severe thunderstorm include York Haven, Washington Boro, East Prospect, York College Of Pennsylvania and Penn State York. This includes Interstate 83 from mile markers 15 to 27. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. && LAT...LON 3996 7686 4012 7672 4015 7629 3987 7653 TIME...MOT...LOC 1739Z 272DEG 25KT 4004 7655 HAIL...<.75IN WIND...60MPH $$ Dangelo
644 WWUS51 KCTP 011747 SVSCTP Severe Weather Statement National Weather Service State College PA 147 PM EDT Thu Jul 1 2021 PAC071-133-011800- /O.CON.KCTP.SV.W.0069.000000T0000Z-210701T1800Z/ Lancaster PA-York PA- 147 PM EDT Thu Jul 1 2021 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 200 PM EDT FOR WEST CENTRAL LANCASTER AND CENTRAL YORK COUNTIES... At 146 PM EDT, a severe thunderstorm was located over Wrightsville and Hallam, moving east at 25 mph. HAZARD...60 mph wind gusts. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees. This severe storm will be near... Columbia around 150 PM EDT. Mountville and Salunga-Landisville around 155 PM EDT. Other locations impacted by this severe thunderstorm include East Prospect and Washington Boro. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. && LAT...LON 4001 7672 4013 7661 4015 7629 3988 7652 TIME...MOT...LOC 1746Z 275DEG 21KT 4003 7653 HAIL...<.75IN WIND...60MPH $$ Dangelo
The office that day
Everything else NWS State College, PA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 1, 11:16 AM EDT | Special Weather Statement | CTP | Franklin | 14 min |
| Jul 1, 11:42 AM EDT | Special Weather Statement | CTP | Cumberland | 33 min |
| Jul 1, 12:16 PM EDT | Special Weather Statement | CTP | Cumberland | 29 min |
| Jul 1, 12:22 PM EDT | Severe Thunderstorm Warning | CTP | Adams, Cumberland, York | 53 min |
| Jul 1, 1:51 PM EDT | Special Weather Statement | CTP | Lebanon | 24 min |
| Jul 1, 2:01 PM EDT | Special Weather Statement | CTP | Lancaster | 29 min |
| Jul 1, 2:16 PM EDT | Special Weather Statement | CTP | Lancaster | 29 min |
| Jul 1, 2:55 PM EDT | Special Weather Statement | CTP | Lancaster | 20 min |
| Jul 1, 3:19 PM EDT | Special Weather Statement | CTP | Lancaster | 26 min |
Nearby
Severe Thunderstorm Warnings in Pennsylvania, 2021Every severe thunderstorm 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.