Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 106, NWS State College, PA
NWS State College, PA issued this severe thunderstorm warning at Jul 9, 2021, 5:24 PM EDT for 4 counties in Pennsylvania. It was in force for 81 min. 7 reports 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 9, 2021, 5:24 PM EDT (21:24 UTC)
- Expired
- Jul 9, 2021, 6:45 PM EDT
- In force
- 81 min
- Issued by
- NWS State College, PA
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 70.0 mph
Counties Dauphin County, PA, Lancaster County, PA, Lebanon County, PA, York County, PA
The radar
The Dover AFB radar (KDOX), 139 km from the middle of the area, began a volume at 21:25 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 9, 5:24 PM EDT | TSTM WND DMG | 1 Sw Lawn, PA | TREES DOWN ACROSS BACHMANVILLE ROAD NEAR THE PA TURNPIKE AND THE LAWN SERVICE PLAZA. |
| Jul 9, 5:31 PM EDT | TSTM WND DMG | 3 W Elizabethtown, PA | WIRES REPORTED DOWN ON BOSSLER ROAD NEAR THE AMTRAK MAINLINE. |
| Jul 9, 5:38 PM EDT | TSTM WND DMG | 2 Sse Mount Gretna, PA | MULTIPLE REPORTS OF TREES ON WIRES ACROSS THE NORTHERN PORTION OF RAPHO TOWNSHIP. |
| Jul 9, 5:49 PM EDT | TSTM WND DMG | 1 Nne Manheim, PA | TREE ON A HOME NEAR HERSHEY DRIVE AND EAST ADELE AVE. |
| Jul 9, 5:53 PM EDT | TSTM WND DMG | 2 Nne East Petersburg, PA | TREE FELL ON AN OCCUPIED VEHICLE ON FRUITVILLE PIKE BETWEEN LITITZ ROAD AND ERBS QUARRY ROAD. NO INJURIES. |
| Jul 9, 5:56 PM EDT | TSTM WND DMG | 1 W Rothsville, PA | TREES DOWN ON ROUTE 772 BETWEEN LITITZ AND BROWNSTOWN. |
| Jul 9, 6:05 PM EDT | TSTM WND DMG | 2 Nnw Leola, PA | TREES DOWN NEAR THE INTERSECTION OF STONE QUARRY ROAD AND ROUTE 772 IN BROWNSTOWN. |
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, 9.4 hours before the alert went out and 147 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
- 862 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 42 m²/s²
- 0-3 km storm-relative helicity
- 55 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
312
WUUS51 KCTP 092124
SVRCTP
PAC043-071-075-133-092245-
/O.NEW.KCTP.SV.W.0106.210709T2124Z-210709T2245Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service State College PA
524 PM EDT Fri Jul 9 2021
The National Weather Service in State College PA has issued a
* Severe Thunderstorm Warning for...
Lancaster County in south central Pennsylvania...
Central York County in south central Pennsylvania...
Southeastern Dauphin County in south central Pennsylvania...
South central Lebanon County in south central Pennsylvania...
* Until 645 PM EDT.
* At 523 PM EDT, a severe thunderstorm was located over
Elizabethtown, moving southeast at 40 mph.
HAZARD...70 mph wind gusts and penny size hail.
SOURCE...Radar indicated.
IMPACT...Expect considerable tree damage. Damage is likely to
mobile homes, roofs, and outbuildings.
* Locations impacted include...
Lancaster, Hershey, Elizabethtown, Columbia, Lititz, Middletown,
Millersville, Willow Street, Mount Joy, New Holland, Manheim, East
Petersburg, Akron, Leola, Paradise, Salunga-Landisville, Maytown,
Rothsville, Strasburg and Mountville.
This includes The Pennsylvania Turnpike from mile markers 248 to 269.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Intense thunderstorm lines can produce brief tornadoes and widespread
significant wind damage. Although a tornado is not immediately
likely, it is best to move to an interior room on the lowest floor of
a building. This storm may cause serious injury and significant
property damage.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4021 7679 4026 7676 4023 7639 4004 7593
3996 7599 3987 7599 3985 7602 3981 7603
3980 7605 3976 7606 3976 7608 3973 7610
3974 7611 3972 7614 3972 7639
TIME...MOT...LOC 2123Z 301DEG 33KT 4019 7660
HAIL...0.75IN
WIND...70MPH
$$
Lambert2 follow-up statements
567
WWUS51 KCTP 092158
SVSCTP
Severe Weather Statement
National Weather Service State College PA
558 PM EDT Fri Jul 9 2021
PAC043-075-092205-
/O.CAN.KCTP.SV.W.0106.000000T0000Z-210709T2245Z/
Dauphin PA-Lebanon PA-
558 PM EDT Fri Jul 9 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN DAUPHIN AND SOUTH
CENTRAL LEBANON COUNTIES IS CANCELLED...
The severe thunderstorm which prompted the warning has moved
southeast of the warned area. Therefore, the warning has been
cancelled.
LAT...LON 4005 7666 4011 7661 4022 7649 4023 7639
4004 7593 3996 7599 3987 7599 3985 7602
3981 7603 3980 7605 3976 7606 3976 7608
3973 7610 3974 7611 3972 7614 3972 7639
TIME...MOT...LOC 2155Z 290DEG 28KT 4010 7629
$$
PAC071-133-092245-
/O.CON.KCTP.SV.W.0106.000000T0000Z-210709T2245Z/
Lancaster PA-York PA-
558 PM EDT Fri Jul 9 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 645 PM EDT
FOR LANCASTER AND SOUTHEASTERN YORK COUNTIES...
At 555 PM EDT, a severe thunderstorm was located near East
Petersburg, moving southeast at 30 mph.
This is a very dangerous storm.
HAZARD...80 mph wind gusts and penny size hail.
SOURCE...Radar indicated.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be heavily damaged. Expect
considerable damage to roofs, windows, and vehicles.
Extensive tree damage and power outages are likely.
This severe storm will be near...
Akron, Willow Street and Leacock around 600 PM EDT.
Bareville, Leola and Strasburg around 610 PM EDT.
New Holland and Paradise around 620 PM EDT.
Gap around 630 PM EDT.
Other locations impacted by this severe thunderstorm include Buck,
East Prospect, Peach Bottom, Rawlinsville, Susquehanna Trails,
Georgetown, Farmersville, Smoketown, Christiana and Washington Boro.
This includes The Pennsylvania Turnpike from mile markers 268 to 269.
This includes the following highways...
Route 30 from Hallam to the Chester County line.
Route 222 from the Maryland Border to near Akron.
State Road 41 from Gap to the Chester County line.
State Road 501 from Lancaster to Lititz.
State Highway 283 from Mount Joy to Lancaster.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
This is an EXTREMELY DANGEROUS SITUATION with tornado like wind
speeds expected. Mobile homes and high profile vehicles are
especially susceptible to winds of this magnitude and may be
overturned. For your protection move to an interior room on the
lowest floor of a building. This storm has the potential to cause
serious injury and significant property damage.
&&
LAT...LON 4005 7666 4011 7661 4022 7649 4023 7639
4004 7593 3996 7599 3987 7599 3985 7602
3981 7603 3980 7605 3976 7606 3976 7608
3973 7610 3974 7611 3972 7614 3972 7639
TIME...MOT...LOC 2155Z 290DEG 28KT 4010 7629
HAIL...0.75IN
WIND...80MPH
$$
Lambert922
WWUS51 KCTP 092229
SVSCTP
Severe Weather Statement
National Weather Service State College PA
629 PM EDT Fri Jul 9 2021
PAC071-133-092245-
/O.CON.KCTP.SV.W.0106.000000T0000Z-210709T2245Z/
Lancaster PA-York PA-
629 PM EDT Fri Jul 9 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 645 PM EDT
FOR SOUTHEASTERN LANCASTER AND SOUTHEASTERN YORK COUNTIES...
At 628 PM EDT, severe thunderstorms were located along a line
extending from Paradise to near Smithville to near Sunnyburn, moving
southeast at 20 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Lancaster, Millersville, Willow Street, Paradise, Strasburg,
Quarryville, Gap, Delta, Wakefield, Brogue, Smithville, Holtwood,
Sunnyburn, Shenks Ferry, Safe Harbor, Susquehanna Trails, Lampeter,
Intercourse, Conestoga and Christiana.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 3992 7656 3995 7648 3999 7637 4007 7621
4001 7595 3996 7599 3987 7599 3985 7602
3981 7603 3980 7605 3976 7606 3976 7608
3973 7610 3974 7611 3972 7614 3972 7639
TIME...MOT...LOC 2228Z 311DEG 17KT 4001 7609 3989 7626 3981 7644
HAIL...<.75IN
WIND...60MPH
$$
LambertThe office that day
Everything else NWS State College, PA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 9, 3:36 PM EDT | Special Weather Statement | CTP | Juniata | 24 min |
| Jul 9, 3:49 PM EDT | Special Weather Statement | CTP | York | 26 min |
| Jul 9, 4:02 PM EDT | Special Weather Statement | CTP | Lycoming | 28 min |
| Jul 9, 4:04 PM EDT | Special Weather Statement | CTP | Perry | 26 min |
| Jul 9, 4:16 PM EDT | Severe Thunderstorm Warning | CTP | Dauphin, Juniata, Lebanon, Perry, Schuylkill | 74 min |
| Jul 9, 4:21 PM EDT | Special Weather Statement | CTP | York | 24 min |
| Jul 9, 4:49 PM EDT | Severe Thunderstorm Warning | CTP | Dauphin, Lebanon | 56 min |
| Jul 9, 6:13 PM EDT | Severe Thunderstorm Warning | CTP | Lancaster | 47 min |
| Jul 9, 6:22 PM EDT | Special Weather Statement | CTP | York | 38 min |
| Jul 9, 6:41 PM EDT | Special Weather Statement | CTP | Schuylkill | 49 min |
| Jul 9, 7:00 PM EDT | Special Weather Statement | CTP | Lancaster | 30 min |
| Jul 9, 7:16 PM EDT | Special Weather Statement | CTP | Tioga | 29 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.