Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 93, NWS State College, PA
NWS State College, PA issued this severe thunderstorm warning at Jul 7, 2021, 7:31 PM EDT for 5 counties in Pennsylvania. It was in force for 44 min. 4 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 7, 2021, 7:31 PM EDT (23:31 UTC)
- Expired
- Jul 7, 2021, 8:15 PM EDT
- In force
- 44 min
- Issued by
- NWS State College, PA
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Clinton County, PA, Lycoming County, PA, Montour County, PA, Northumberland County, PA, Union County, PA
The radar
The State College radar (KCCX), 89 km from the middle of the area, began a volume at 23:34 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 7, 7:39 PM EDT | TSTM WND DMG | 6 Nne Glen Union, PA | TREES DOWN ON WIRES. |
| Jul 7, 8:01 PM EDT | TSTM WND DMG | 1 Ne South Williamsport, PA | TREES AND WIRES DOWN ALONG SECOND AVE. IN SOUTH WILLIAMSPORT. |
| Jul 7, 8:17 PM EDT | TSTM WND GST 64 | Montoursville, PA | KIPT MEASURED THUNDERSTORM WIND GUST 64 MPH. |
| Jul 7, 8:23 PM EDT | TSTM WND DMG | Garden View, PA | REPORT FROM MPING: 3-INCH TREE LIMBS BROKEN; POWER POLES BROKEN. |
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 7, 2:41 PM EDT | Severe Thunderstorm Watch | SPC | 10 hr |
| Jul 7, 3:31 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 11.5 hours before the alert went out and 228 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
- 161 J/kg
- Mixed-layer CIN
- -85 J/kg
- Mixed-layer LCL
- 734 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- 81 m²/s²
- 0-3 km storm-relative helicity
- 117 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.3
The text
As transmitted.
349
WUUS51 KCTP 072331
SVRCTP
PAC035-081-093-097-119-080015-
/O.NEW.KCTP.SV.W.0093.210707T2331Z-210708T0015Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service State College PA
731 PM EDT Wed Jul 7 2021
The National Weather Service in State College PA has issued a
* Severe Thunderstorm Warning for...
Northwestern Northumberland County in central Pennsylvania...
Montour County in central Pennsylvania...
Lycoming County in north central Pennsylvania...
Union County in central Pennsylvania...
Central Clinton County in north central Pennsylvania...
* Until 815 PM EDT.
* At 730 PM EDT, severe thunderstorms were located along a line
extending from near Tamarack to near Hyner to near Dunnstown to
Carroll to Penns Creek, moving east at 90 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage
to roofs, siding, and trees.
* Locations impacted include...
Williamsport, Lock Haven, Milton, Lewisburg, Danville,
Montoursville, Jersey Shore, Northumberland, Mifflinburg, Carroll,
Winfield, Muncy, Watsontown, Hughesville, Riverside, Montgomery,
Linntown, Avis, Dunnstown and Renovo.
For those driving on Interstate 80, this includes areas between the
Loganton and Buckhorn exits, specifically from mile markers 185 to
228.
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 4159 7681 4141 7675 4131 7660 4127 7646
4116 7659 4115 7664 4096 7652 4094 7653
4085 7714 4096 7724 4104 7715 4101 7728
4118 7748 4144 7798 4148 7775 4148 7760
4151 7760 4155 7737 4155 7696 4160 7688
TIME...MOT...LOC 2330Z 253DEG 79KT 4138 7780 4131 7761 4120 7740 4103
7719 4088 7706
HAIL...1.00IN
WIND...60MPH
$$
Jurewicz1 follow-up statement
526
WWUS51 KCTP 072353
SVSCTP
Severe Weather Statement
National Weather Service State College PA
753 PM EDT Wed Jul 7 2021
PAC035-080003-
/O.CAN.KCTP.SV.W.0093.000000T0000Z-210708T0015Z/
Clinton PA-
753 PM EDT Wed Jul 7 2021
...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL CLINTON COUNTY IS
CANCELLED...
The storms which prompted the warning have moved out of the warned
area.
A Severe Thunderstorm Watch remains in effect until 1100 PM EDT for
central and north central Pennsylvania. A Severe Thunderstorm Watch
also remains in effect until 1100 PM EDT for central and north
central Pennsylvania.
LAT...LON 4159 7681 4141 7675 4131 7660 4127 7646
4116 7659 4115 7664 4106 7661 4105 7658
4100 7657 4097 7652 4094 7653 4088 7691
4107 7700 4128 7717 4139 7738 4147 7760
4151 7760 4154 7741 4155 7696 4160 7688
TIME...MOT...LOC 2353Z 247DEG 51KT 4148 7753 4141 7734 4130 7713 4109
7696 4093 7688
$$
PAC081-093-097-119-080015-
/O.CON.KCTP.SV.W.0093.000000T0000Z-210708T0015Z/
Northumberland PA-Montour PA-Lycoming PA-Union PA-
753 PM EDT Wed Jul 7 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 815 PM EDT
FOR NORTHWESTERN NORTHUMBERLAND...MONTOUR...LYCOMING AND NORTHEASTERN
UNION COUNTIES...
At 753 PM EDT, severe thunderstorms were located along a line
extending from Slate Run to near English Center to near Cogan Station
to near Allenwood to near Linntown, moving east at 40 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
Locations impacted include...
Williamsport, Milton, Lewisburg, Danville, Montoursville,
Northumberland, Winfield, Muncy, Watsontown, Hughesville, Riverside,
Montgomery, Linntown, Duboistown, New Columbia, Montandon,
Mechanicsville, Allenwood, Elimsport and Lairdsville.
For those driving on Interstate 80, this includes areas between the
Mile Run and Buckhorn exits, specifically from mile markers 203 to
227.
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 4159 7681 4141 7675 4131 7660 4127 7646
4116 7659 4115 7664 4106 7661 4105 7658
4100 7657 4097 7652 4094 7653 4088 7691
4107 7700 4128 7717 4139 7738 4147 7760
4151 7760 4154 7741 4155 7696 4160 7688
TIME...MOT...LOC 2353Z 247DEG 51KT 4148 7753 4141 7734 4130 7713 4109
7696 4093 7688
HAIL...1.00IN
WIND...60MPH
$$
JurewiczThe office that day
Everything else NWS State College, PA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 7, 3:35 PM EDT | Special Weather Statement | CTP | Fulton | 40 min |
| Jul 7, 4:00 PM EDT | Special Weather Statement | CTP | Warren | 45 min |
| Jul 7, 4:05 PM EDT | Special Weather Statement | CTP | Somerset | 25 min |
| Jul 7, 4:12 PM EDT | Special Weather Statement | CTP | Somerset | 33 min |
| Jul 7, 4:12 PM EDT | Severe Thunderstorm Warning | CTP | Cambria, Somerset | 47 min |
| Jul 7, 4:22 PM EDT | Severe Thunderstorm Warning | CTP | Bedford, Somerset | 38 min |
| Jul 7, 4:44 PM EDT | Severe Thunderstorm Warning | CTP | Cambria | 61 min |
| Jul 7, 4:46 PM EDT | Special Weather Statement | CTP | Warren | 29 min |
| Jul 7, 4:48 PM EDT | Special Weather Statement | CTP | Bedford | 27 min |
| Jul 7, 4:54 PM EDT | Severe Thunderstorm Warning | CTP | Bedford, Somerset | 51 min |
| Jul 7, 4:59 PM EDT | Special Weather Statement | CTP | Warren | 31 min |
| Jul 7, 5:07 PM EDT | Severe Thunderstorm Warning | CTP | McKean, Warren | 53 min |
| Jul 7, 5:12 PM EDT | Special Weather Statement | CTP | Blair | 33 min |
| Jul 7, 5:19 PM EDT | Severe Thunderstorm Warning | CTP | Blair | 41 min |
| Jul 7, 5:23 PM EDT | Severe Thunderstorm Warning | CTP | Bedford | 37 min |
| Jul 7, 5:27 PM EDT | Special Weather Statement | CTP | Clearfield | 33 min |
| Jul 7, 5:35 PM EDT | Severe Thunderstorm Warning | CTP | Blair | 25 min |
| Jul 7, 5:38 PM EDT | Special Weather Statement | CTP | Warren | 37 min |
| Jul 7, 5:42 PM EDT | Special Weather Statement | CTP | Cumberland | 33 min |
| Jul 7, 5:48 PM EDT | Severe Thunderstorm Warning | CTP | Blair, Huntingdon | 57 min |
| Jul 7, 5:50 PM EDT | Severe Thunderstorm Warning | CTP | Cumberland, Franklin | 40 min |
| Jul 7, 5:55 PM EDT | Severe Thunderstorm Warning | CTP | McKean | 65 min |
| Jul 7, 6:00 PM EDT | Special Weather Statement | CTP | Elk | 30 min |
| Jul 7, 6:12 PM EDT | Severe Thunderstorm Warning | CTP | Centre, Clearfield, Huntingdon | 48 min |
| Jul 7, 6:22 PM EDT | Special Weather Statement | CTP | Mifflin | 23 min |
| Jul 7, 6:29 PM EDT | Severe Thunderstorm Warning | CTP | Warren | 61 min |
| Jul 7, 6:36 PM EDT | Severe Thunderstorm Warning | CTP | Centre, Clearfield, Clinton, Mifflin | 39 min |
| Jul 7, 6:37 PM EDT | Severe Thunderstorm Warning | CTP | Cumberland, Franklin, Perry | 37 min |
| Jul 7, 6:43 PM EDT | Severe Thunderstorm Warning | CTP | McKean, Potter | 77 min |
| Jul 7, 6:56 PM EDT | Severe Thunderstorm Warning | CTP | Centre, Clinton, Mifflin, Snyder, Union | 49 min |
| Jul 7, 7:09 PM EDT | Severe Thunderstorm Warning | CTP | Juniata, Mifflin, Snyder | 36 min |
| Jul 7, 7:19 PM EDT | Areal Flood Advisory | CTP | Warren | 116 min |
| Jul 7, 7:44 PM EDT | Areal Flood Advisory | CTP | McKean, Potter | 2 hr |
| Jul 7, 7:48 PM EDT | Special Weather Statement | CTP | Bedford | 27 min |
| Jul 7, 7:50 PM EDT | Special Weather Statement | CTP | Tioga | 10 min |
| Jul 7, 7:51 PM EDT | Special Weather Statement | CTP | Potter | 24 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.