Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2020

Severe Thunderstorm Warning 49, NWS State College, PA

June 3, 20206 counties in Pennsylvania

NWS State College, PA issued this severe thunderstorm warning at Jun 3, 2020, 5:48 PM EDT for 6 counties in Pennsylvania. It was in force for 57 min. 2 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: Jun 3, 2020, 5:48 PM EDT (21:48 UTC)
Expired: Jun 3, 2020, 6:45 PM EDT
In force: 57 min
Issued by: NWS State College, PA
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Dauphin County, PA, Juniata County, PA, Lebanon County, PA, Northumberland County, PA, Perry County, PA, Snyder County, PA

The radar

The State College radar (KCCX), 126 km from the middle of the area, began a volume at 21:50 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
Jun 3, 5:59 PM EDT	TSTM WND DMG	1 Sse Meiserville, PA	BARN DESTROYED AT ORIENTAL RD AND SAWMILL RD IN CHAPMAN TWP.
Jun 3, 6:02 PM EDT	TSTM WND DMG	2 W Harper Tavern, PA	12 TREES DOWN.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

Did it verify

Verified. The Iowa Environmental Mesonet's Cow matched 2 storm reports to this severe thunderstorm warning; the first came 11 minutes after it went out.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jun 3, 3:52 PM EDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Washington/Dulle, VA (KIAD), launched 12:00Z, 9.8 hours before the alert went out and 165 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 2031 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: 273 m²/s²
0-3 km storm-relative helicity: 269 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

552 
WUUS51 KCTP 032148
SVRCTP
PAC043-067-075-097-099-109-032245-
/O.NEW.KCTP.SV.W.0049.200603T2148Z-200603T2245Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service State College PA
548 PM EDT Wed Jun 3 2020

The National Weather Service in State College PA has issued a

* Severe Thunderstorm Warning for...
  Southwestern Northumberland County in central Pennsylvania...
  Dauphin County in south central Pennsylvania...
  Northeastern Juniata County in central Pennsylvania...
  Southeastern Snyder County in central Pennsylvania...
  Northeastern Perry County in south central Pennsylvania...
  Southwestern Lebanon County in south central Pennsylvania...

* Until 645 PM EDT.

* At 548 PM EDT, a severe thunderstorm was located over Meiserville,
  moving southeast 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 trees, roofs, and siding.

* This severe thunderstorm will be near...
  Port Trevorton around 550 PM EDT.
  Elizabethville and Millersburg around 600 PM EDT.
  Dehart Dam around 610 PM EDT.
  Penn National Race Course, Harper Tavern, Skyline View and Fort 
  Indiantown Gap around 620 PM EDT.

Other locations impacted by this severe thunderstorm include Enders,
Liverpool, Mount Gretna, Dalmatia, Berrysburg, Halifax, Hershey Park,
Penn State College Of Medicine and Ono.

This includes the following Interstates...
 The Pennsylvania Turnpike from mile markers 251 to 264.
 Interstate 81 from mile markers 70 to 86.

This includes the following COVID-19 Test Sites... 
Colonial Park Harrisburg Urgent Care...
Eastside Campus...
and Hershey Medical Center.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 4064 7715 4077 7699 4025 7635 4024 7644
      4020 7654 4019 7661 4016 7664 4017 7666
      4015 7668
TIME...MOT...LOC 2148Z 314DEG 42KT 4065 7700 

HAIL...1.00IN
WIND...60MPH
 
$$

Jurewicz

1 follow-up statement

331 
WWUS51 KCTP 032237
SVSCTP

Severe Weather Statement
National Weather Service State College PA
637 PM EDT Wed Jun 3 2020

PAC043-067-075-097-099-109-032247-
/O.EXP.KCTP.SV.W.0049.000000T0000Z-200603T2245Z/
Northumberland PA-Dauphin PA-Juniata PA-Snyder PA-Perry PA-
Lebanon PA-
637 PM EDT Wed Jun 3 2020

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN NORTHUMBERLAND...
DAUPHIN...NORTHEASTERN JUNIATA...SOUTHEASTERN SNYDER...NORTHEASTERN
PERRY AND SOUTHWESTERN LEBANON COUNTIES WILL EXPIRE AT 645 PM EDT...
        
The storm which prompted the warning has moved out of the area.
Therefore, the warning will be allowed to expire.

A Severe Thunderstorm Watch remains in effect until 1000 PM EDT for
south central and central Pennsylvania.

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 4064 7715 4077 7699 4025 7635 4024 7644
      4020 7654 4019 7661 4016 7664 4017 7666
      4015 7668
TIME...MOT...LOC 2237Z 314DEG 42KT 4025 7647 

$$

Colbert

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 3, 3:40 PM EDT, 2 hours 8 minutes earlier.

Area forecast discussion, Jun 3, 3:40 PM EDT, 2 hours 8 minutes before

Area Forecast Discussion
National Weather Service State College PA
340 PM EDT Wed Jun 3 2020

.SYNOPSIS...
Additional showers and thunderstorms will be quickly forming
late this afternoon into this evening across the northern half
of the state and will drift into southern PA early this evening
as a frontal boundary pushes through the state. It will remain
unsettled Thursday into Friday, and possibly right into the
weekend. High pressure and dry air take hold Sunday and lasts
into Tuesday.

&&

.NEAR TERM /UNTIL MIDNIGHT TONIGHT/...
The nose of MU capes exceeding 2000 J/KG is nosing into the NW
mtns attm and the airmass is recovering quickly after this
morning's widespread showers and strong to svr tsra.

Showers and scattered strong TSRA were firing rapidly within
this region of increasing instability. 0-1km were EHI's were
between 1-2 M2/S2 across much of our central and western zones,
with 0-1km bulk shear between 20-25 KTS. LCL heights were also
only 750-1000M over roughly the NW half of the CWA.

The blossoming area of convection will sink right through the
current SPC Day 1 Slight Risk area for svr and strengthen over
the next several hours. By 00Z Thu, the broken line of strong
to SVR convection will be across the southern 1-2 layers of PA
counties, and sink south of the Mason/Dixon line around dark.

Temps have rebounded into the low-mid 80s across all but the
northern tier with sfc dewpoints mainly in the mid to upper
60s.

Westerly winds will continue to gust into the teens and 20s
over the SW/SC ahead of the expanding area of TSRA fueling SR
inflow.

&&

.SHORT TERM /MIDNIGHT THROUGH 6 PM THURSDAY/...
Storms should still be going early this evening in the southern
third of the area. Clearing will spread south across the region
late tonight, but may self-destruct and turn to some fog.

Low clouds are also possible where the wind is an upslope
(Alleghenies). Storms/showers will diminish for everyone but
they could hang on until around or shortly after midnight across
the Laurels. Sticky air will keep the temps from falling out of
the mid 60s for about half of the area, though some clearing
will allow the nrn mtns to dip into the 50s.

The old boundary will likely be along the srn border Thurs
morning, the sfc wind will be light and SWrly. Upper flow
flattens to a W-E direction, and lingering moisture and daytime
heat will lead to showers and storms in the aftn. The shear will
be lacking, but CAPEs could reach 1000 or better across the
south. So, a few of the storms could go severe, but most likely,
without the shear, many will be sub-severe. SPC MRGL risk is
enough to keep a close eye on them. Maxes Thurs will be just as
warm across the north than the south, thanks to more sun up
north. The coolest place will be the Laurels where clouds and a
higher chc of showers exist.

&&

.LONG TERM /THURSDAY NIGHT THROUGH WEDNESDAY/...
The old front will stall near the PA-MD border on Thu, keeping
a chance of rain showers and maybe a few PM tstms through Fri.
Generally a quarter to half an inch of rain is expected across
the southern counties Thu-Fri, with locally higher amounts in
storms. Lesser amounts north.

The stationary front is progged to move offshore Fri night, with
slightly drier air moving in for Sat. Another cold front and
shortwave trough may touch off isolated showers/storms Sat, but
drier air will be a limiting factor. Cooler, drier air will move
in behind this front for Sun-Mon. We will see a warming trend
into the middle of next week as the remnants of TS Cristobal
moving up the MS valley help build an upper ridge over the
eastern US.

&&

.AVIATION /19Z WEDNESDAY THROUGH MONDAY/...
A second round of scattered showers and t-storms will develop
across parts of the airspace late this afternoon through early
tonight. Outside of t-storms, expect mainly VFR conditions to
prevail during the 03/012Z TAF period. Some patchy fog is
possible in the northern tier late tonight into early Thursday.

Outlook...

Thu...Showers/t-storms likely especially srn 1/2.

Fri-Sat...Chance of showers/t-storms.

Sun...VFR/no sig wx.

&&

.CTP WATCHES/WARNINGS/ADVISORIES...
None.

&&

SYNOPSIS...Dangelo/Lambert
NEAR TERM...Lambert
SHORT TERM...Dangelo/Lambert
LONG TERM...Gartner/Colbert
AVIATION...Steinbugl

Hazardous weather outlook, Jun 3, 4:24 PM EDT, 1 hour 24 minutes before

Hazardous Weather Outlook
National Weather Service State College PA
424 PM EDT Wed Jun 3 2020

PAZ011-012-018-019-041-045-046-049>053-058-042030-
Cameron-Northern Clinton-Northern Centre-Southern Centre-
Northern Lycoming-Southern Clinton-Southern Lycoming-Union-Snyder-
Montour-Northumberland-Columbia-Schuylkill-
424 PM EDT Wed Jun 3 2020

...SEVERE THUNDERSTORM WATCH 244 IN EFFECT UNTIL 10 PM EDT THIS
EVENING...

This Hazardous Weather Outlook is for central Pennsylvania.

.DAY ONE...Tonight.

Please listen to NOAA Weather Radio or go to
weather.gov/StateCollege on the internet for more
information about the following hazards.

   Severe Thunderstorm Watch.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Spotters are encouraged to report significant hazardous weather.

PAZ004>006-010-017-037-042-042030-
Warren-McKean-Potter-Elk-Clearfield-Tioga-Sullivan-
424 PM EDT Wed Jun 3 2020

This Hazardous Weather Outlook is for central Pennsylvania.

.DAY ONE...Tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Spotters are encouraged to report significant hazardous weather.

PAZ033>035-042030-
Somerset-Bedford-Fulton-
424 PM EDT Wed Jun 3 2020

This Hazardous Weather Outlook is for central Pennsylvania.

.DAY ONE...Tonight.

Isolated severe thunderstorms with damaging winds 60 mph or greater
and large hail exceeding 1 inch in diameter are possible this
evening.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday.

Strong to severe thunderstorms with gusty winds and small hail
are possible, mainly after noon on Thursday.

.SPOTTER INFORMATION STATEMENT...

Spotters are encouraged to report significant hazardous weather.

PAZ024>026-036-042030-
Cambria-Blair-Huntingdon-Franklin-
424 PM EDT Wed Jun 3 2020

This Hazardous Weather Outlook is for central Pennsylvania.

.DAY ONE...Tonight.

Isolated severe thunderstorms with damaging winds 60 mph or greater
and large hail exceeding 1 inch in diameter are possible late today
and this evening.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday.

Strong to severe thunderstorms with gusty winds and small hail
are possible, mainly after noon on Thursday.

.SPOTTER INFORMATION STATEMENT...

Spotters are encouraged to report significant hazardous weather.

PAZ027-028-056-057-059-063>066-042030-
Mifflin-Juniata-Perry-Dauphin-Lebanon-Cumberland-Adams-York-
Lancaster-
424 PM EDT Wed Jun 3 2020

...SEVERE THUNDERSTORM WATCH 244 IN EFFECT UNTIL 10 PM EDT THIS
EVENING...

This Hazardous Weather Outlook is for central Pennsylvania.

.DAY ONE...Tonight.

Please listen to NOAA Weather Radio or go to
weather.gov/StateCollege on the internet for more
information about the following hazards.

   Severe Thunderstorm Watch.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday.

Strong to severe thunderstorms with gusty winds and small hail
are possible, mainly after noon on Thursday.

.SPOTTER INFORMATION STATEMENT...

Spotters are encouraged to report significant hazardous weather.

In the hours before

Local storm report, Jun 3, 5:07 PM EDT, 41 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
507 PM EDT WED JUN 3 2020

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0458 PM     HAIL             TROXELVILLE             40.81N 77.20W
06/03/2020  M1.00 INCH       SNYDER             PA   TRAINED SPOTTER

            QUARTER SIZE HAIL IN TROXELVILLE.

&&

ART

Local storm report, Jun 3, 5:35 PM EDT, 13 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
535 PM EDT WED JUN 3 2020

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0520 PM     TSTM WND DMG     2 SSE MEISERVILLE       40.65N 76.94W
06/03/2020                   SNYDER             PA   TRAINED SPOTTER

            MULTIPLE TREES SNAPPED ALONG ROUTE 11.

&&

SDT

Local storm report, Jun 3, 5:40 PM EDT, 8 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
540 PM EDT WED JUN 3 2020

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0507 PM     TSTM WND DMG     1 E REBUCK              40.72N 76.73W
06/03/2020                   NORTHUMBERLAND     PA   UTILITY COMPANY

            TREES DOWN ON WIRES NEAR REBUCK.

&&

ART

Local storm report, Jun 3, 5:42 PM EDT, 6 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
542 PM EDT WED JUN 3 2020

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0536 PM     HAIL             BERRYSBURG              40.60N 76.81W
06/03/2020  M1.00 INCH       DAUPHIN            PA   AMATEUR RADIO

&&

MRC

Local storm report, Jun 3, 5:43 PM EDT, 5 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
543 PM EDT WED JUN 3 2020

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0535 PM     HAIL             BERRYSBURG              40.60N 76.81W
06/03/2020  M1.00 INCH       DAUPHIN            PA   PUBLIC

&&

SDT

Local storm report, Jun 3, 5:44 PM EDT, 4 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
544 PM EDT WED JUN 3 2020

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0536 PM     TSTM WND DMG     2 ESE PILLOW            40.63N 76.77W
06/03/2020                   DAUPHIN            PA   UTILITY COMPANY

            TREES DOWN ON WIRES.

&&

ART

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 3, 12:39 AM EDT	Severe Thunderstorm Warning	CTP	McKean, Potter	96 min
Jun 3, 1:28 AM EDT	Severe Thunderstorm Warning	CTP	Tioga	25 min
Jun 3, 1:49 AM EDT	Areal Flood Advisory	CTP	McKean	116 min
Jun 3, 1:58 AM EDT	Special Weather Statement	CTP	Cameron, Clinton	32 min
Jun 3, 2:29 AM EDT	Areal Flood Advisory	CTP	Cameron, Clinton	2 hr
Jun 3, 3:35 AM EDT	Special Weather Statement	CTP	Juniata	25 min
Jun 3, 4:04 AM EDT	Special Weather Statement	CTP	Juniata, Perry	41 min
Jun 3, 4:23 AM EDT	Special Weather Statement	CTP	Tioga	37 min
Jun 3, 6:12 AM EDT	Special Weather Statement	CTP	Warren	33 min
Jun 3, 8:05 AM EDT	Special Weather Statement	CTP	Warren	55 min
Jun 3, 9:00 AM EDT	Special Weather Statement	CTP	Cameron, Elk	30 min
Jun 3, 9:36 AM EDT	Special Weather Statement	CTP	Clearfield	39 min
Jun 3, 9:52 AM EDT	Severe Thunderstorm Warning	CTP	Blair, Cambria, Centre, Clearfield, Huntingdon	38 min
Jun 3, 10:15 AM EDT	Special Weather Statement	CTP	Blair, Cambria, Huntingdon	45 min
Jun 3, 10:17 AM EDT	Special Weather Statement	CTP	Columbia, Juniata, Mifflin, Montour, Northumberland, Snyder and 1 more	43 min
Jun 3, 10:36 AM EDT	Severe Thunderstorm Warning	CTP	Cumberland, Dauphin, Huntingdon, Juniata, Lebanon, Mifflin and 2 more	54 min
Jun 3, 10:50 AM EDT	Severe Thunderstorm Warning	CTP	Columbia, Montour, Northumberland, Schuylkill	40 min
Jun 3, 11:19 AM EDT	Severe Thunderstorm Warning	CTP	Dauphin, Lancaster, Lebanon, York	56 min
Jun 3, 2:55 PM EDT	Special Weather Statement	CTP	Cameron	35 min
Jun 3, 3:21 PM EDT	Severe Thunderstorm Warning	CTP	Cameron, Centre, Clinton	54 min
Jun 3, 3:53 PM EDT	Special Weather Statement	CTP	Clinton	37 min
Jun 3, 4:01 PM EDT	Special Weather Statement	CTP	Union	44 min
Jun 3, 4:11 PM EDT	Severe Thunderstorm Warning	CTP	Centre, Clinton, Union	64 min
Jun 3, 4:43 PM EDT	Severe Thunderstorm Warning	CTP	Dauphin, Northumberland, Schuylkill, Snyder, Union	47 min
Jun 3, 4:49 PM EDT	Severe Thunderstorm Warning	CTP	Centre, Juniata, Mifflin, Northumberland, Snyder, Union	41 min
Jun 3, 5:00 PM EDT	Special Weather Statement	CTP	Sullivan	60 min
Jun 3, 5:14 PM EDT	Severe Thunderstorm Warning	CTP	Lycoming, Sullivan, Tioga	61 min
Jun 3, 5:26 PM EDT	Severe Thunderstorm Warning	CTP	Dauphin, Lebanon, Northumberland, Snyder	64 min
Jun 3, 6:12 PM EDT	Severe Thunderstorm Warning	CTP	Lancaster, Lebanon	63 min
Jun 3, 6:21 PM EDT	Special Weather Statement	CTP	Juniata, Mifflin	54 min
Jun 3, 6:48 PM EDT	Severe Thunderstorm Warning	CTP	Cumberland, Juniata, Perry	57 min
Jun 3, 6:58 PM EDT	Special Weather Statement	CTP	Bedford	62 min
Jun 3, 7:27 PM EDT	Severe Thunderstorm Warning	CTP	Cumberland, York	63 min

Nearby

Severe Thunderstorm Warnings in Pennsylvania, 2020 Every 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.