Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2020
Severe Thunderstorm Warning 13, NWS State College, PA
NWS State College, PA issued this severe thunderstorm warning at Apr 9, 2020, 11:18 PM EDT for Lancaster County, York County, Pennsylvania. It was in force for 42 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
- Apr 9, 2020, 11:18 PM EDT (03:18 UTC)
- Expired
- Apr 10, 2020, 12:00 AM EDT
- In force
- 42 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 Dover AFB radar (KDOX), 138 km from the middle of the area, began a volume at 03:20 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 |
|---|---|---|---|
| Apr 9, 11:28 PM EDT | TSTM WND DMG | Pleasant Grove, PA | SEVERAL TREES DOWN NEAR PLEASANT GROVE |
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 00:00Z, 3.3 hours before the alert went out and 152 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
- 1936 m above ground
- 0-6 km bulk shear
- 97 kt
- 0-1 km storm-relative helicity
- -34 m²/s²
- 0-3 km storm-relative helicity
- 59 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
238
WUUS51 KCTP 100318
SVRCTP
PAC071-133-100400-
/O.NEW.KCTP.SV.W.0013.200410T0318Z-200410T0400Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service State College PA
1118 PM EDT Thu Apr 9 2020
The National Weather Service in State College PA has issued a
* Severe Thunderstorm Warning for...
Lancaster County in south central Pennsylvania...
Southeastern York County in south central Pennsylvania...
* Until midnight EDT.
* At 1116 PM EDT, a line of showers and thunderstorms producing
strong wind gusts was located along a line extending from near
Lititz to near Holtwood to near Codorus. Very strong and possibly
damaging wind gusts are likely as this line races east at 50 mph.
HAZARD...60 mph wind gusts and penny size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to trees, roofs, and siding.
* Locations impacted include...
Lancaster, Ephrata, Columbia, Lititz, Millersville, Willow Street,
Red Lion, New Holland, Manheim, East Petersburg, Akron, Leola,
Paradise, Salunga-Landisville, Denver, Shrewsbury, Reamstown,
Rothsville, Strasburg and Mountville.
This includes the following Interstates...
The Pennsylvania Turnpike from mile markers 285 to 295.
Interstate 83 from mile markers 0 to 8.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3992 7654 4022 7638 4023 7602 4014 7587
4010 7594 4004 7594 3996 7599 3987 7599
3985 7602 3981 7603 3973 7610 3974 7611
3972 7614 3972 7693
TIME...MOT...LOC 0316Z 272DEG 42KT 4015 7635 3986 7637 3975 7682
HAIL...0.75IN
WIND...60MPH
$$
DeVoir/Colbert2 follow-up statements
261
WWUS51 KCTP 100331
SVSCTP
Severe Weather Statement
National Weather Service State College PA
1131 PM EDT Thu Apr 9 2020
PAC071-133-100400-
/O.CON.KCTP.SV.W.0013.000000T0000Z-200410T0400Z/
Lancaster PA-York PA-
1131 PM EDT Thu Apr 9 2020
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL MIDNIGHT EDT
FOR SOUTHEASTERN LANCASTER AND SOUTHEASTERN YORK COUNTIES...
At 1131 PM EDT, severe thunderstorms were located along a line
extending from Akron to near Quarryville to Shrewsbury, moving east
at 50 mph.
HAZARD...60 mph wind gusts and penny size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to trees, roofs, and siding.
Locations impacted include...
New Holland, Paradise, Strasburg, Quarryville, Stewartstown, Gap,
Delta, Wakefield, Churchtown, Holtwood, Sunnyburn, Smithville,
Susquehanna Trails, Intercourse, Christiana, Blue Ball, Georgetown,
Gordonville, Goodville and Fawn Grove.
This includes the following Interstates...
The Pennsylvania Turnpike from mile markers 291 to 295.
Interstate 83 from mile markers 0 to 1.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3992 7625 4021 7599 4023 7602 4014 7587
4010 7594 4004 7594 3996 7599 3987 7599
3985 7602 3981 7603 3973 7610 3974 7611
3972 7614 3972 7671
TIME...MOT...LOC 0331Z 272DEG 42KT 4015 7620 3986 7622 3975 7667
HAIL...0.75IN
WIND...60MPH
$$
DeVoir165
WWUS51 KCTP 100351
SVSCTP
Severe Weather Statement
National Weather Service State College PA
1151 PM EDT Thu Apr 9 2020
PAC071-133-100401-
/O.EXP.KCTP.SV.W.0013.000000T0000Z-200410T0400Z/
Lancaster PA-York PA-
1151 PM EDT Thu Apr 9 2020
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN LANCASTER AND
SOUTHEASTERN YORK COUNTIES WILL EXPIRE AT MIDNIGHT EDT...
The storms which prompted the warning have moved out of the area.
Therefore, the warning will be allowed to expire.
To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
State College PA.
LAT...LON 3992 7625 4021 7599 4023 7602 4014 7587
4010 7594 4004 7594 3996 7599 3987 7599
3985 7602 3981 7603 3973 7610 3974 7611
3972 7614 3972 7671
TIME...MOT...LOC 0351Z 272DEG 42KT 4014 7594 3985 7596 3974 7641
$$
DangeloThe office that day
Everything else NWS State College, PA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 9, 9:12 PM EDT | Special Weather Statement | CTP | Blair, Huntingdon | 48 min |
| Apr 10, 2:15 AM EDT | Freeze Watch | CTP | Adams, Cumberland, Dauphin, Franklin, Lancaster, Lebanon and 1 more | 11 hr |
| Apr 10, 2:15 AM EDT | Wind Advisory | CTP | Adams, Cumberland, Dauphin, Franklin, Lancaster, Lebanon and 3 more | 17 hr |
| Apr 10, 1:21 PM EDT | Freeze Warning | CTP | Adams, Cumberland, Dauphin, Franklin, Lancaster, Lebanon and 1 more | 19 hr |
Nearby
Severe Thunderstorm Warnings in Pennsylvania, 2020Every severe thunderstorm warning in 2020
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.