Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 157, NWS State College, PA
NWS State College, PA issued this severe thunderstorm warning at Jul 13, 2021, 9:30 PM EDT for 5 counties in Pennsylvania. It was in force for 60 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 13, 2021, 9:30 PM EDT (01:30 UTC)
- Expired
- Jul 13, 2021, 10:30 PM EDT
- In force
- 60 min
- Issued by
- NWS State College, PA
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Clinton County, PA, Lycoming County, PA, Northumberland County, PA, Snyder County, PA, Union County, PA
The radar
The State College radar (KCCX), 91 km from the middle of the area, began a volume at 01:29 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 13, 9:50 PM EDT | TSTM WND DMG | 1 Ene Allenwood, PA | CORRECTS PREVIOUS TSTM WND DMG REPORT FROM 1 ENE ALLENWOOD. TREES DOWN IN THE VICINITY OF GREGG AND WHITE DEER TOWNSHIP. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jul 13, 1:37 PM EDT | Severe Thunderstorm Watch | SPC | 10 hr |
The nearest sounding before it
Washington/Dulle, VA (KIAD), launched 00:00Z, 1.5 hours before the alert went out and 237 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
- 1133 J/kg
- Mixed-layer CIN
- -111 J/kg
- Mixed-layer LCL
- 1722 m above ground
- 0-6 km bulk shear
- 23 kt
- 0-1 km storm-relative helicity
- 77 m²/s²
- 0-3 km storm-relative helicity
- 77 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.0
The text
As transmitted.
734
WUUS51 KCTP 140130
SVRCTP
PAC035-081-097-109-119-140230-
/O.NEW.KCTP.SV.W.0157.210714T0130Z-210714T0230Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service State College PA
930 PM EDT Tue Jul 13 2021
The National Weather Service in State College PA has issued a
* Severe Thunderstorm Warning for...
Western Northumberland County in central Pennsylvania...
Snyder County in central Pennsylvania...
Southeastern Lycoming County in north central Pennsylvania...
Union County in central Pennsylvania...
Southeastern Clinton County in north central Pennsylvania...
* Until 1030 PM EDT.
* At 930 PM EDT, severe thunderstorms were located along a line
extending from near Collomsville to near Carroll to R.B. Winter
State Park to Laurelton Center to Snyder-Middleswart State Park,
moving east at 20 mph.
HAZARD...60 mph wind gusts and penny size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
* Severe thunderstorms will be near...
Sand Bridge State Park, Duboistown, Elimsport and Richfield around
950 PM EDT.
Montoursville, Mifflinburg, Williamsport, Penns Creek, Forest
Hill, Paxtonville and Spruce Run Reservoir around 1000 PM EDT.
Middleburg, Allenwood, Vicksburg, Fremont and Mount Pleasant Mills
around 1010 PM EDT.
Milton, Kreamer, Linntown, Watsontown, Montgomery, Kratzerville,
New Columbia and Delaware Run around 1020 PM EDT.
Other locations impacted by these severe thunderstorms include
Beavertown, Turbotville, South Williamsport, West Milton, Hartleton,
Garden View, Oval, Picture Rocks, New Berlin and Freeburg.
For those driving on Interstate 80, this includes areas between the
Loganton and Danville exits, specifically from mile markers 188 to
216.
This includes Interstate 180 from mile markers 1 to 29.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4134 7668 4127 7668 4117 7672 4117 7673
4106 7675 4096 7680 4084 7676 4065 7677
4072 7735 4089 7731 4104 7714 4104 7716
4101 7727 4127 7722
TIME...MOT...LOC 0130Z 269DEG 16KT 4120 7714 4107 7716 4098 7721 4088
7722 4080 7725
HAIL...0.75IN
WIND...60MPH
$$
Jurewicz1 follow-up statement
190
WWUS51 KCTP 140148
SVSCTP
Severe Weather Statement
National Weather Service State College PA
948 PM EDT Tue Jul 13 2021
PAC035-140158-
/O.CAN.KCTP.SV.W.0157.000000T0000Z-210714T0230Z/
Clinton PA-
948 PM EDT Tue Jul 13 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN CLINTON COUNTY IS
CANCELLED...
The storms which prompted the warning have moved out of the warned
area. Therefore, the warning has been cancelled.
A Severe Thunderstorm Watch remains in effect until 1100 PM EDT for
central and north central Pennsylvania.
LAT...LON 4070 7717 4071 7721 4086 7715 4096 7714
4105 7709 4125 7706 4123 7670 4117 7672
4117 7673 4106 7675 4096 7680 4084 7676
4065 7677
TIME...MOT...LOC 0148Z 281DEG 23KT 4117 7700 4104 7702 4095 7707 4085
7708 4077 7711
$$
PAC081-097-109-119-140230-
/O.CON.KCTP.SV.W.0157.000000T0000Z-210714T0230Z/
Northumberland PA-Snyder PA-Lycoming PA-Union PA-
948 PM EDT Tue Jul 13 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1030 PM EDT
FOR WESTERN NORTHUMBERLAND...SNYDER...SOUTHEASTERN LYCOMING AND UNION
COUNTIES...
At 948 PM EDT, severe thunderstorms were located along a line
extending from near Elimsport to Spruce Run Reservoir to Forest Hill
to Penns Creek to Paxtonville, moving east at 25 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.
These severe storms will be near...
Montoursville and Spruce Run Reservoir around 950 PM EDT.
Fremont, Vicksburg, New Columbia, Middleburg, Montgomery, Mount
Pleasant Mills, Allenwood and Watsontown around 1000 PM EDT.
Milton, Selinsgrove, Lewisburg, Delaware Run, Winfield,
Kratzerville, Kreamer, Linntown, Montandon and Port Trevorton
around 1010 PM EDT.
Northumberland, Sunbury, Shamokin Dam and Hummels Wharf around
1020 PM EDT.
Other locations impacted by these severe thunderstorms include
Beavertown, Turbotville, South Williamsport, West Milton, New Berlin,
Freeburg, McEwensville, Herndon, Selinsgrove Airport and Williamsport
Airport.
For those driving on Interstate 80, this includes areas between the
Jersey Shore and Danville exits, specifically from mile markers 198
to 216.
This includes Interstate 180 between mile markers 1 and 15...and from
mile markers 26 to 29.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4070 7717 4071 7721 4086 7715 4096 7714
4105 7709 4125 7706 4123 7670 4117 7672
4117 7673 4106 7675 4096 7680 4084 7676
4065 7677
TIME...MOT...LOC 0148Z 281DEG 23KT 4117 7700 4104 7702 4095 7707 4085
7708 4077 7711
HAIL...0.75IN
WIND...70MPH
$$
JurewiczThe office that day
Everything else NWS State College, PA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 13, 8:08 PM EDT | Special Weather Statement | CTP | Franklin | 37 min |
| Jul 13, 8:09 PM EDT | Special Weather Statement | CTP | Lycoming | 36 min |
| Jul 13, 8:17 PM EDT | Severe Thunderstorm Warning | CTP | Lycoming, Northumberland, Union | 43 min |
| Jul 13, 8:25 PM EDT | Special Weather Statement | CTP | Huntingdon | 35 min |
| Jul 13, 8:41 PM EDT | Areal Flood Advisory | CTP | Lycoming, Sullivan, Tioga | 25 min |
| Jul 13, 8:51 PM EDT | Tornado Warning | CTP | Lycoming, Montour, Northumberland | 24 min |
| Jul 13, 8:59 PM EDT | Severe Thunderstorm Warning | CTP | Lycoming, Sullivan | 61 min |
| Jul 13, 9:06 PM EDT | Flash Flood Warning | CTP | Lycoming, Sullivan, Tioga | 3 hr |
| Jul 13, 9:15 PM EDT | Special Weather Statement | CTP | Lycoming | 30 min |
| Jul 13, 10:18 PM EDT | Areal Flood Advisory | CTP | Centre, Clinton, Columbia, Lycoming, Montour, Northumberland and 2 more | 117 min |
| Jul 13, 10:18 PM EDT | Severe Thunderstorm Warning | CTP | Columbia, Montour, Northumberland, Snyder, Union | 57 min |
| Jul 13, 11:18 PM EDT | Special Weather Statement | CTP | Columbia, Montour | 27 min |
| Jul 14, 12:12 AM EDT | Areal Flood Advisory | CTP | Columbia, Montour, Northumberland | 2 hr |
| Jul 14, 1:46 AM EDT | Areal Flood Advisory | CTP | Lycoming | 119 min |
| Jul 14, 1:49 PM EDT | Special Weather Statement | CTP | Perry | 26 min |
| Jul 14, 4:08 PM EDT | Special Weather Statement | CTP | Perry | 37 min |
| Jul 14, 4:58 PM EDT | Special Weather Statement | CTP | Sullivan | 32 min |
| Jul 14, 6:52 PM EDT | Special Weather Statement | CTP | Lycoming | 23 min |
| Jul 14, 7:31 PM EDT | Special Weather Statement | CTP | Columbia | 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.