Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 68, NWS State College, PA
NWS State College, PA issued this severe thunderstorm warning at Jul 1, 2021, 12:22 PM EDT for Adams County, Cumberland County, York County, Pennsylvania. It was in force for 53 min. 1 report came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Jul 1, 2021, 12:22 PM EDT (16:22 UTC)
- Expired
- Jul 1, 2021, 1:15 PM EDT
- In force
- 53 min
- Issued by
- NWS State College, PA
- Area
- Storm-based polygon
- Tornado
- Possible
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Adams County, PA, Cumberland County, PA, York County, PA
The radar
The Sterling radar (KLWX), 125 km from the middle of the area, began a volume at 16:22 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 1, 12:40 PM EDT | TSTM WND DMG | 1 Nnw Dillsburg, PA | TREE DOWN BLOCKING ROAD. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Washington/Dulle, VA (KIAD), launched 12:00Z, 4.4 hours before the alert went out and 125 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.
343
WUUS51 KCTP 011622
SVRCTP
PAC001-041-133-011715-
/O.NEW.KCTP.SV.W.0068.210701T1622Z-210701T1715Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service State College PA
1222 PM EDT Thu Jul 1 2021
The National Weather Service in State College PA has issued a
* Severe Thunderstorm Warning for...
Northeastern Adams County in south central Pennsylvania...
Northwestern York County in south central Pennsylvania...
South central Cumberland County in south central Pennsylvania...
* Until 115 PM EDT.
* At 1221 PM EDT, a severe thunderstorm was located near Aspers,
moving east at 30 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
* Locations impacted include...
York, Weigelstown, Shiloh, West York, Dillsburg, Lake Meade, Mount
Holly Springs, Dover, York Springs, Franklintown, Lewisberry,
Wellsville, Idaville, Gardners, Newberrytown and Ski Roundtop Ski
Area.
This includes Interstate 83 from mile markers 25 to 32.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3998 7717 4001 7728 4005 7729 4013 7719
4014 7674 4012 7673 3993 7676
TIME...MOT...LOC 1621Z 271DEG 24KT 4004 7720
TORNADO...POSSIBLE
HAIL...<.75IN
WIND...60MPH
$$
Colbert2 follow-up statements
555
WWUS51 KCTP 011656
SVSCTP
Severe Weather Statement
National Weather Service State College PA
1256 PM EDT Thu Jul 1 2021
PAC041-011706-
/O.CAN.KCTP.SV.W.0068.000000T0000Z-210701T1715Z/
Cumberland PA-
1256 PM EDT Thu Jul 1 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTH CENTRAL CUMBERLAND
COUNTY IS CANCELLED...
The storms which prompted the warning have moved out of the warned
area. Therefore, the warning has been cancelled.
LAT...LON 4000 7724 4005 7715 4013 7704 4014 7674
4012 7673 3993 7676 3998 7717
TIME...MOT...LOC 1656Z 270DEG 15KT 4012 7680 4003 7697 3995 7721
$$
PAC001-133-011715-
/O.CON.KCTP.SV.W.0068.000000T0000Z-210701T1715Z/
Adams PA-York PA-
1256 PM EDT Thu Jul 1 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 115 PM EDT
FOR NORTHEASTERN ADAMS AND NORTHWESTERN YORK COUNTIES...
At 1256 PM EDT, severe thunderstorms were located along a line
extending from near Valley Green to near Lake Meade to Aspers, moving
east at 15 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
York, Weigelstown, Shiloh, West York, Dillsburg, Lake Meade, Dover,
York Springs, Franklintown, Lewisberry, Wellsville, Idaville,
Gardners, Newberrytown and Ski Roundtop Ski Area.
This includes Interstate 83 from mile markers 25 to 32.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4000 7724 4005 7715 4013 7704 4014 7674
4012 7673 3993 7676 3998 7717
TIME...MOT...LOC 1656Z 270DEG 15KT 4012 7680 4003 7697 3995 7721
HAIL...<.75IN
WIND...60MPH
$$
Colbert672
WWUS51 KCTP 011710
SVSCTP
Severe Weather Statement
National Weather Service State College PA
110 PM EDT Thu Jul 1 2021
PAC001-011719-
/O.CAN.KCTP.SV.W.0068.000000T0000Z-210701T1715Z/
Adams PA-
110 PM EDT Thu Jul 1 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN ADAMS COUNTY IS
CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
the warned area. Therefore, the warning has been cancelled for Adams
County
.
LAT...LON 3996 7698 4002 7702 4002 7704 4003 7707
4013 7695 4014 7674 4012 7673 3993 7676
TIME...MOT...LOC 1709Z 271DEG 24KT 4002 7685
$$
PAC133-011715-
/O.CON.KCTP.SV.W.0068.000000T0000Z-210701T1715Z/
York PA-
110 PM EDT Thu Jul 1 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 115 PM EDT
FOR NORTHWESTERN YORK COUNTY...
At 109 PM EDT, a severe thunderstorm was located over Dover, moving
east at 30 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
York, Weigelstown, Shiloh, West York, Dover, Lewisberry, Wellsville,
Newberrytown and Ski Roundtop Ski Area.
This includes Interstate 83 from mile markers 25 to 32.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3996 7698 4002 7702 4002 7704 4003 7707
4013 7695 4014 7674 4012 7673 3993 7676
TIME...MOT...LOC 1709Z 271DEG 24KT 4002 7685
HAIL...<.75IN
WIND...60MPH
$$
DangeloThe 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, 1:15 PM EDT | Severe Thunderstorm Warning | CTP | Lancaster, York | 45 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.