Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 144, NWS State College, PA

June 1, 2019Potter County, Pennsylvania

NWS State College, PA issued this severe thunderstorm warning at Jun 1, 2019, 3:40 PM EDT for Potter County, Pennsylvania. It was in force for 50 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
Jun 1, 2019, 3:40 PM EDT (19:40 UTC)
Expired
Jun 1, 2019, 4:30 PM EDT
In force
50 min
Issued by
NWS State College, PA
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

County Potter County, PA

The radar

The State College radar (KCCX), 92 km from the middle of the area, began a volume at 19:44 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 nearest sounding before it

Buffalo Intl Airport, NY (KBUF), launched 12:00Z, 7.7 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.

Skew-T log-pSkew-T log-p diagram, Buffalo Intl Airport, NY at 12:00Z on 2019-06-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 18 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Buffalo Intl Airport, NY at 12:00Z on 2019-06-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 212 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
18 J/kg
Mixed-layer CIN
-192 J/kg
Mixed-layer LCL
1306 m above ground
0-6 km bulk shear
28 kt
0-1 km storm-relative helicity
212 m²/s²
0-3 km storm-relative helicity
222 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

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 Jun 1, 2:30 PM EDT, 1 hour 10 minutes earlier.

Area forecast discussion, Jun 1, 2:30 PM EDT, 1 hour 10 minutes before
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Hazardous weather outlook, Jun 1, 6:04 AM EDT, 9 hours 36 minutes before
Hazardous Weather Outlook
National Weather Service State College PA
604 AM EDT Sat Jun 1 2019

PAZ004>006-010>012-037-041-042-021015-
Warren-McKean-Potter-Elk-Cameron-Northern Clinton-Tioga-
Northern Lycoming-Sullivan-
604 AM EDT Sat Jun 1 2019

This Hazardous Weather Outlook is for central Pennsylvania.

.DAY ONE...Today and tonight.

Strong to severe thunderstorms with gusty winds and small hail
are possible this afternoon and evening. Some of the storms may make
heavy rain which could lead to minor flooding.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

Frost is possible Tuesday morning.

.SPOTTER INFORMATION STATEMENT...

Spotters are encouraged to report significant hazardous weather.

PAZ017>019-024-025-033-021015-
Clearfield-Northern Centre-Southern Centre-Cambria-Blair-Somerset-
604 AM EDT Sat Jun 1 2019

This Hazardous Weather Outlook is for central Pennsylvania.

.DAY ONE...Today and tonight.

Strong to severe thunderstorms with gusty winds and small hail
are possible late this afternoon and evening.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

Strong to severe thunderstorms with gusty winds and small hail
are possible Sunday afternoon.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

PAZ045-046-049>053-021015-
Southern Clinton-Southern Lycoming-Union-Snyder-Montour-
Northumberland-Columbia-
604 AM EDT Sat Jun 1 2019

This Hazardous Weather Outlook is for central Pennsylvania.

.DAY ONE...Today and tonight.

Strong to severe thunderstorms with gusty winds and small hail
are possible this afternoon and evening. Some of the storms may make
heavy rain which could lead to minor flooding.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

Strong to severe thunderstorms with gusty winds and small hail
are possible Sunday afternoon.

.SPOTTER INFORMATION STATEMENT...

Spotters are encouraged to report significant hazardous weather.

PAZ026>028-034-035-021015-
Huntingdon-Mifflin-Juniata-Bedford-Fulton-
604 AM EDT Sat Jun 1 2019

This Hazardous Weather Outlook is for central Pennsylvania.

.DAY ONE...Today and tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

Strong to severe thunderstorms with gusty winds and small hail
are possible Sunday afternoon.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

PAZ036-056>059-063>066-021015-
Franklin-Perry-Dauphin-Schuylkill-Lebanon-Cumberland-Adams-York-
Lancaster-
604 AM EDT Sat Jun 1 2019

This Hazardous Weather Outlook is for central Pennsylvania.

.DAY ONE...Today and tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

Severe thunderstorms with damaging winds 60 mph or greater and
large hail exceeding 1 inch in diameter are possible Sunday
afternoon
and evening.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

In the hours before

Local storm report, Jun 1, 11:42 AM EDT, 3 hours 58 minutes before
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Special weather statement, Jun 1, 2:57 PM EDT, 43 minutes before
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Special weather statement, Jun 1, 3:32 PM EDT, 8 minutes before
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        The site you requested is temporarily down for maintenance or an unexpected outage.
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The office that day

Everything else NWS State College, PA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 1, 2:57 PM EDTSpecial Weather StatementCTPWarren33 min
Jun 1, 3:32 PM EDTSpecial Weather StatementCTPPotter28 min
Jun 1, 3:55 PM EDTSpecial Weather StatementCTPWarren50 min
Jun 1, 4:32 PM EDTSevere Thunderstorm WarningCTPWarren28 min
Jun 1, 4:50 PM EDTAreal Flood AdvisoryCTPMcKean, Potter3 hr
Jun 1, 4:53 PM EDTSpecial Weather StatementCTPMcKean37 min
Jun 1, 5:04 PM EDTSevere Thunderstorm WarningCTPElk26 min
Jun 1, 5:10 PM EDTSpecial Weather StatementCTPTioga50 min
Jun 1, 5:30 PM EDTSpecial Weather StatementCTPCameron45 min
Jun 1, 5:39 PM EDTSevere Thunderstorm WarningCTPTioga66 min
Jun 1, 5:50 PM EDTSpecial Weather StatementCTPMontour, Northumberland25 min
Jun 1, 6:33 PM EDTSpecial Weather StatementCTPClinton42 min
Jun 1, 6:43 PM EDTAreal Flood AdvisoryCTPElk3 hr
Jun 1, 6:56 PM EDTAreal Flood AdvisoryCTPMontour, Northumberland, Union3 hr
Jun 1, 7:06 PM EDTSpecial Weather StatementCTPFulton39 min
Jun 1, 7:11 PM EDTSpecial Weather StatementCTPCameron, Clearfield, Elk, McKean, Potter, Tioga64 min
Jun 1, 7:20 PM EDTSpecial Weather StatementCTPCumberland55 min
Jun 1, 7:24 PM EDTSpecial Weather StatementCTPColumbia, Lycoming, Montour, Northumberland, Sullivan36 min
Jun 1, 7:42 PM EDTSpecial Weather StatementCTPPerry33 min

Nearby

Severe Thunderstorm Warnings in Pennsylvania, 2019Every severe thunderstorm warning in 2019

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.