Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2022
Severe Thunderstorm Warning 47, NWS State College, PA
NWS State College, PA issued this severe thunderstorm warning at May 20, 2022, 1:41 PM EDT for 4 counties in Pennsylvania. It was in force for 34 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- May 20, 2022, 1:41 PM EDT (17:41 UTC)
- Expired
- May 20, 2022, 2:15 PM EDT
- In force
- 34 min
- Issued by
- NWS State College, PA
- Area
- Storm-based polygon
- Tornado
- Possible
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Cumberland County, PA, Dauphin County, PA, Lebanon County, PA, Perry County, PA
The radar
The State College radar (KCCX), 111 km from the middle of the area, began a volume at 17:43 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.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| May 20, 11:35 AM EDT | Tornado Watch | SPC | 7 hr |
The nearest sounding before it
Washington/Dulle, VA (KIAD), launched 12:00Z, 5.7 hours before the alert went out and 159 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
- 1 J/kg
- Mixed-layer CIN
- -226 J/kg
- Mixed-layer LCL
- 1469 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 106 m²/s²
- 0-3 km storm-relative helicity
- 169 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.2
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS State College, PA wrote its last area forecast discussion before this severe thunderstorm warning went out at May 20, 11:46 AM EDT, 1 hour 55 minutes earlier.
Area forecast discussion, May 20, 11:46 AM EDT, 1 hour 55 minutes before
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</html>Hazardous weather outlook, May 20, 12:57 PM EDT, 44 minutes before
Hazardous Weather Outlook National Weather Service State College PA 1257 PM EDT Fri May 20 2022 PAZ017-024-033-211700- Clearfield-Cambria-Somerset- 1257 PM EDT Fri May 20 2022 This Hazardous Weather Outlook is for central Pennsylvania. .DAY ONE...This afternoon and tonight. The probability for widespread hazardous weather is low. .DAYS TWO THROUGH SEVEN...Saturday through Thursday. Very warm and humid conditions are expected Saturday. Maximum heat index values are forecast in the low to mid 90s. Be mindful of heat stress impacts given limited heat exposure and acclimation this early in the year. .SPOTTER INFORMATION STATEMENT... Spotters are encouraged to report significant hazardous weather. PAZ025-034-035-211700- Blair-Bedford-Fulton- 1257 PM EDT Fri May 20 2022 ...TORNADO WATCH 251 IN EFFECT UNTIL 7 PM EDT THIS EVENING... This Hazardous Weather Outlook is for central Pennsylvania. .DAY ONE...This afternoon and tonight. Please listen to NOAA Weather Radio or go to weather.gov/StateCollege on the internet for more information about the following hazards. Tornado Watch. .DAYS TWO THROUGH SEVEN...Saturday through Thursday. Very warm and humid conditions are expected Saturday. Maximum heat index values are forecast in the low to mid 90s. Be mindful of heat stress impacts given limited heat exposure and acclimation this early in the year. .SPOTTER INFORMATION STATEMENT... Spotters are encouraged to report significant hazardous weather. PAZ005-010-011-211700- McKean-Elk-Cameron- 1257 PM EDT Fri May 20 2022 This Hazardous Weather Outlook is for central Pennsylvania. .DAY ONE...This afternoon and tonight. The probability for widespread hazardous weather is low. .DAYS TWO THROUGH SEVEN...Saturday through Thursday. The probability for widespread hazardous weather is low. .SPOTTER INFORMATION STATEMENT... Spotters are encouraged to report significant hazardous weather. PAZ028-036-049>053-056>059-063>066-211700- Juniata-Franklin-Union-Snyder-Montour-Northumberland-Columbia-Perry- Dauphin-Schuylkill-Lebanon-Cumberland-Adams-York-Lancaster- 1257 PM EDT Fri May 20 2022 ...TORNADO WATCH 251 IN EFFECT UNTIL 7 PM EDT THIS EVENING... This Hazardous Weather Outlook is for central Pennsylvania. .DAY ONE...This afternoon and tonight. Please listen to NOAA Weather Radio or go to weather.gov/StateCollege on the internet for more information about the following hazards. Tornado Watch. .DAYS TWO THROUGH SEVEN...Saturday through Thursday. Hot and humid conditions are expected Saturday. Maximum heat index values are forecast in the mid to upper 90s and approaching 100 degrees in some areas. Be mindful of heat stress impacts given limited heat exposure and acclimation this early in the year. Isolated severe storms with wind damage and hail will be possible Sunday afternoon and evening. .SPOTTER INFORMATION STATEMENT... Spotters are encouraged to report significant hazardous weather. PAZ045-046-211700- Southern Clinton-Southern Lycoming- 1257 PM EDT Fri May 20 2022 This Hazardous Weather Outlook is for central Pennsylvania. .DAY ONE...This afternoon and tonight. The probability for widespread hazardous weather is low. .DAYS TWO THROUGH SEVEN...Saturday through Thursday. Hot and humid conditions are expected Saturday. Maximum heat index values are forecast in the mid to upper 90s and approaching 100 degrees in some areas. Be mindful of heat stress impacts given limited heat exposure and acclimation this early in the year. Isolated severe storms with wind damage and hail will be possible Sunday afternoon and evening. .SPOTTER INFORMATION STATEMENT... Spotters are encouraged to report significant hazardous weather. PAZ004-211700- Warren- 1257 PM EDT Fri May 20 2022 This Hazardous Weather Outlook is for central Pennsylvania. .DAY ONE...This afternoon and tonight. The probability for widespread hazardous weather is low. .DAYS TWO THROUGH SEVEN...Saturday through Thursday. A marginal hail and wind-damage threat will be possible Saturday afternoon. .SPOTTER INFORMATION STATEMENT... Spotters are encouraged to report significant hazardous weather. PAZ018-019-026-027-211700- Northern Centre-Southern Centre-Huntingdon-Mifflin- 1257 PM EDT Fri May 20 2022 ...TORNADO WATCH 251 IN EFFECT UNTIL 7 PM EDT THIS EVENING... This Hazardous Weather Outlook is for central Pennsylvania. .DAY ONE...This afternoon and tonight. Please listen to NOAA Weather Radio or go to weather.gov/StateCollege on the internet for more information about the following hazards. Tornado Watch. .DAYS TWO THROUGH SEVEN...Saturday through Thursday. Very warm and humid conditions are expected Saturday. Maximum heat index values are forecast in the low to mid 90s. Be mindful of heat stress impacts given limited heat exposure and acclimation this early in the year. Isolated severe storms with wind damage and hail will be possible Sunday afternoon and evening. .SPOTTER INFORMATION STATEMENT... Spotters are encouraged to report significant hazardous weather. PAZ006-012-037-041-042-211700- Potter-Northern Clinton-Tioga-Northern Lycoming-Sullivan- 1257 PM EDT Fri May 20 2022 This Hazardous Weather Outlook is for central Pennsylvania. .DAY ONE...This afternoon and tonight. The probability for widespread hazardous weather is low. .DAYS TWO THROUGH SEVEN...Saturday through Thursday. Isolated severe storms with wind damage and hail will be possible Sunday afternoon and evening. .SPOTTER INFORMATION STATEMENT... Spotters are encouraged to report significant hazardous weather. Lambert
In the hours before
Local storm report, May 20, 11:30 AM EDT, 2 hours 11 minutes before
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</html>Special weather statement, May 20, 11:53 AM EDT, 1 hour 48 minutes before
Special Weather Statement
National Weather Service State College PA
1153 AM EDT Fri May 20 2022
PAZ065-066-201630-
Lancaster PA-York PA-
1153 AM EDT Fri May 20 2022
...A STRONG THUNDERSTORM WILL IMPACT NORTHERN LANCASTER AND CENTRAL
YORK COUNTIES THROUGH 1230 PM EDT...
At 1153 AM EDT, Doppler radar was tracking a strong thunderstorm near
York, moving northeast at 50 mph.
HAZARD...Wind gusts up to 50 mph and penny size hail.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor hail damage to vegetation
possible.
This strong thunderstorm will be near...
Columbia, Elizabethtown and Rheems around 1200 PM EDT.
Mount Joy, Salunga-Landisville and Mountville around 1205 PM EDT.
Manheim and East Petersburg around 1210 PM EDT.
Lititz around 1215 PM EDT.
Akron, Brickerville and Rothsville around 1220 PM EDT.
Ephrata, Reamstown and Denver around 1225 PM EDT.
Other locations impacted by this storm include York Haven, Schoeneck,
Penryn, Reinholds and Lancaster Airport.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
A Tornado Watch remains in effect until 700 PM EDT for south central
Pennsylvania.
&&
LAT...LON 3992 7670 4008 7683 4013 7674 4012 7673
4012 7672 4014 7671 4017 7666 4017 7664
4019 7661 4019 7657 4024 7644 4025 7631
4031 7616 4021 7599
TIME...MOT...LOC 1553Z 239DEG 49KT 4005 7668
MAX HAIL SIZE...0.75 IN
MAX WIND GUST...50 MPH
JurewiczSpecial weather statement, May 20, 12:45 PM EDT, 56 minutes before
Special Weather Statement
National Weather Service State College PA
1245 PM EDT Fri May 20 2022
PAZ065-066-201730-
Lancaster PA-York PA-
1245 PM EDT Fri May 20 2022
...A STRONG THUNDERSTORM WILL IMPACT NORTHWESTERN LANCASTER AND
CENTRAL YORK COUNTIES THROUGH 130 PM EDT...
At 1245 PM EDT, Doppler radar was tracking a strong thunderstorm over
York, moving northeast at 40 mph.
HAZARD...Wind gusts up to 50 mph and penny size hail.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor hail damage to vegetation
possible.
Locations impacted include...
Lancaster, York, Elizabethtown, Columbia, Lititz, Mount Joy, Manheim,
East Petersburg, Shiloh, East York, Leola, Stonybrook-Wilshire,
Salunga-Landisville, Maytown, Rothsville, Mountville, Manchester,
Hallam, Emigsville and Marietta.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.
A Tornado Watch remains in effect until 700 PM EDT for south central
Pennsylvania.
&&
LAT...LON 3997 7668 3998 7677 4004 7679 4024 7638
4009 7616
TIME...MOT...LOC 1645Z 250DEG 35KT 4001 7672
MAX HAIL SIZE...0.75 IN
MAX WIND GUST...50 MPH
LambertSpecial weather statement, May 20, 1:19 PM EDT, 22 minutes before
Special Weather Statement
National Weather Service State College PA
119 PM EDT Fri May 20 2022
PAZ056-057-063-201815-
Perry PA-Cumberland PA-Dauphin PA-
119 PM EDT Fri May 20 2022
...STRONG THUNDERSTORMS WILL IMPACT DAUPHIN...NORTHERN CUMBERLAND AND
EASTERN PERRY COUNTIES THROUGH 215 PM EDT...
At 118 PM EDT, Doppler radar was tracking strong thunderstorms along
a line extending from 17 miles northwest of Enola to 15 miles west of
Mechanicsburg to near Carlisle. Movement was northeast at 50 mph.
HAZARD...Wind gusts up to 50 mph and pea size hail.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor hail damage to vegetation
possible.
Locations impacted include...
Harrisburg, Carlisle, Lower Allen, Hershey, Colonial Park, Progress,
Mechanicsburg, Camp Hill, Palmyra, New Cumberland, Linglestown,
Enola, Steelton, Lemoyne, Hummelstown, Plainfield, Paxtonia,
Schlusser, Rutherford and Skyline View.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
These storms may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.
A Tornado Watch remains in effect until 700 PM EDT for south central
and central Pennsylvania.
&&
LAT...LON 4025 7746 4052 7715 4066 7670 4047 7668
4029 7661 4021 7689 4023 7690 4021 7691
4008 7736
TIME...MOT...LOC 1718Z 248DEG 43KT 4051 7710 4030 7729 4013 7731
MAX HAIL SIZE...0.25 IN
MAX WIND GUST...50 MPH
LambertSpecial weather statement, May 20, 1:41 PM EDT, 0 minutes before
Special Weather Statement
National Weather Service State College PA
141 PM EDT Fri May 20 2022
PAZ026-035-036-201815-
Fulton PA-Franklin PA-Huntingdon PA-
141 PM EDT Fri May 20 2022
...STRONG THUNDERSTORMS WILL IMPACT SOUTHEASTERN HUNTINGDON...
FRANKLIN AND NORTHEASTERN FULTON COUNTIES THROUGH 215 PM EDT...
At 141 PM EDT, Doppler radar was tracking strong thunderstorms along
a line extending from 16 miles northwest of Shippensburg to 18 miles
west of Chambersburg to near Breezewood. Movement was east at 50 mph.
HAZARD...Wind gusts up to 50 mph and pea size hail.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor hail damage to vegetation
possible.
Locations impacted include...
Chambersburg, Shippensburg, Guilford, St. Thomas, Fayetteville,
Scotland, McConnellsburg, Harrisonville, Marion, Fort Loudon, Fort
Littleton, Saluvia, Roxbury, Doylesburg, Locust Grove, Upper
Strasburg, Willow Hill, Sideling Hill Rest Area, Fannettsburg and
Orrstown.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
These storms may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.
A Tornado Watch remains in effect until 700 PM EDT for south central
and central Pennsylvania.
&&
LAT...LON 3985 7825 4003 7814 4022 7787 4027 7770
4029 7767 4023 7765 4022 7763 4020 7761
4018 7762 4016 7761 4013 7757 4004 7752
3990 7746 3986 7747
TIME...MOT...LOC 1741Z 263DEG 42KT 4017 7779 3998 7800 3987 7822
MAX HAIL SIZE...0.25 IN
MAX WIND GUST...50 MPH
LambertThe office that day
Everything else NWS State College, PA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 20, 10:36 AM EDT | Special Weather Statement | CTP | Bedford, Somerset | 39 min |
| May 20, 10:56 AM EDT | Severe Thunderstorm Warning | CTP | Bedford, Blair, Cambria, Fulton, Huntingdon, Somerset | 49 min |
| May 20, 11:20 AM EDT | Severe Thunderstorm Warning | CTP | Bedford, Somerset | 55 min |
| May 20, 11:53 AM EDT | Special Weather Statement | CTP | Lancaster | 37 min |
| May 20, 12:09 PM EDT | Severe Thunderstorm Warning | CTP | Bedford, Franklin, Fulton, Huntingdon | 81 min |
| May 20, 12:45 PM EDT | Special Weather Statement | CTP | Lancaster | 45 min |
| May 20, 1:14 PM EDT | Severe Thunderstorm Warning | CTP | Lancaster | 61 min |
| May 20, 1:18 PM EDT | Severe Thunderstorm Warning | CTP | Adams, Cumberland, Franklin, York | 42 min |
| May 20, 1:19 PM EDT | Special Weather Statement | CTP | Cumberland, Dauphin, Perry | 56 min |
| May 20, 1:41 PM EDT | Special Weather Statement | CTP | Franklin, Fulton | 34 min |
| May 20, 1:55 PM EDT | Special Weather Statement | CTP | Columbia | 20 min |
| May 20, 1:58 PM EDT | Severe Thunderstorm Warning | CTP | Lancaster, York | 47 min |
| May 20, 2:11 PM EDT | Severe Thunderstorm Warning | CTP | Dauphin, Lebanon | 34 min |
| May 20, 2:16 PM EDT | Severe Thunderstorm Warning | CTP | York | 29 min |
| May 20, 2:30 PM EDT | Special Weather Statement | CTP | Schuylkill | 60 min |
| May 20, 2:33 PM EDT | Severe Thunderstorm Warning | CTP | Lancaster | 42 min |
Nearby
Severe Thunderstorm Warnings in Pennsylvania, 2022Every severe thunderstorm warning in 2022
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.