Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2020

Severe Thunderstorm Warning 59, NWS State College, PA

June 4, 2020Lebanon County, Schuylkill County, Pennsylvania

NWS State College, PA issued this severe thunderstorm warning at Jun 4, 2020, 5:15 PM EDT for Lebanon County, Schuylkill County, Pennsylvania. It was in force for 60 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jun 4, 2020, 5:15 PM EDT (21:15 UTC)
Expired: Jun 4, 2020, 6:15 PM EDT
In force: 60 min
Issued by: NWS State College, PA
Area: Storm-based polygon
Hail: 1.0 in
Wind: 70.0 mph

Counties Lebanon County, PA, Schuylkill County, PA

The radar

The State College radar (KCCX), 155 km from the middle of the area, began a volume at 21:17 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.

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

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 4, 2:29 PM EDT	Severe Thunderstorm Watch	SPC	8 hr

The nearest sounding before it

Washington/Dulle, VA (KIAD), launched 12:00Z, 9.3 hours before the alert went out and 206 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: 139 J/kg
Mixed-layer CIN: -204 J/kg
Mixed-layer LCL: 1499 m above ground
0-6 km bulk shear: 41 kt
0-1 km storm-relative helicity: -64 m²/s²
0-3 km storm-relative helicity: 54 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.0

Open this sounding in Storm Lab

The text

As transmitted.

503 
WUUS51 KCTP 042115
SVRCTP
PAC075-107-042215-
/O.NEW.KCTP.SV.W.0059.200604T2115Z-200604T2215Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service State College PA
515 PM EDT Thu Jun 4 2020

The National Weather Service in State College PA has issued a

* Severe Thunderstorm Warning for...
  Southeastern Schuylkill County in central Pennsylvania...
  North central Lebanon County in south central Pennsylvania...

* Until 615 PM EDT.

* At 515 PM EDT, a severe thunderstorm was located near Lickdale,
  moving northeast at 25 mph.

  HAZARD...70 mph wind gusts and quarter size hail.

  SOURCE...Radar indicated.

  IMPACT...Hail damage to vehicles is expected. Expect considerable 
           tree damage. Wind damage is also likely to mobile homes, 
           roofs, and outbuildings.

* Locations impacted include...
  Pottsville, Schuylkill Haven, Shenandoah, Minersville, Mahanoy
  City, Frackville, St. Clair, Orwigsburg, Pine Grove, Port Carbon,
  Tremont, Tuscarora, New Philadelphia, Friedensburg, Grier City-Park
  Crest, Marlin, Altamont, Renningers, Englewood and Delano.

This includes Interstate 81 between mile markers 95 and 113...between
mile markers 118 and 119...and from mile markers 122 to 133.

This includes the following COVID-19 Test Sites... 
Geisinger Orwigsburg...
Geisinger St. Luke's Hospital...
and Lehigh Valley Health Network.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4063 7600 4058 7601 4058 7607 4053 7617
      4052 7626 4052 7634 4050 7643 4049 7644
      4048 7641 4047 7643 4053 7659 4088 7611
      4067 7592
TIME...MOT...LOC 2115Z 245DEG 22KT 4051 7646 

HAIL...1.00IN
WIND...70MPH
 
$$

Gartner/Dangelo

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 4, 3:34 PM EDT, 1 hour 41 minutes earlier.

Area forecast discussion, Jun 4, 3:34 PM EDT, 1 hour 41 minutes before

Area Forecast Discussion
National Weather Service State College PA
334 PM EDT Thu Jun 4 2020

.SYNOPSIS...
Warm and humid conditions will continue this late this
afternoon into Saturday with numerous thunderstorms, some
severe, forming across much of the region today with showers
and thunderstorms most concentrated over the southeast third of
the state.

Cooler and less humid air will arrive Saturday night and
promote pleasant and dry weather Sunday through Tuesday. Expect
temperatures and humidity levels to trend higher into midweek
ahead of the next frontal system.

&&

.NEAR TERM /UNTIL 6 AM FRIDAY MORNING/...
ML cape has increased to between 500-1000 J/KG across much of
the southern half of the CWA at 19Z, while sfc based Cape is up
to over 2000 j/kg across the Laurel Highlands where the
strongest convection is currently firing and moving ENE.

Expect the radar screen across the southern two thirds of the
CWA to light up through early this evening, as a blend of
multicell clusters and discrete strong to svr supercell storms
track ENE across the current SVR TSRA Watch 250 (ahead of a
larger-scale line of severe convection with bowing segments
moves in from eastern Ohio this evening).

The lead storms will continue to strengthen over the next
several hours as they move into the warmer and more humid
airmass in place across the Lower Susq Valley with temps in the
mid to upper 80s.

Temps elsewhere late this afternoon will range from the upper
60s to low 70s across the Nrn Tier of PA where thicker clouds
are more widespread, to the upper 70s and l80s over the rest of
central PA and the Laurel Highlands.

The TSRA may train from west to east in some areas. WPC's D1
MRGL ERO covers the entire area with latest high res models and
HREF mean showing spotty 1-2" amounts. This rainfall could
produce some isolated flooding particularly in urban areas, but
the overall risk of FF is low especially given 14-day rainfall
departures that are generally 25-50% of normal.

The convection will move east/decrease in coverage early
tonight with mostly cloudy skies into Friday morning. Max/min
temps will be above average with the largest departure from
normal in lows tonight.

&&

.SHORT TERM /6 AM FRIDAY MORNING THROUGH SATURDAY NIGHT/...
Warm and humid conditions continue on Friday with isolated to
scattered aftn storms expected to form again in weakly forced
environment along the terrain/lee trough axis and drift slowly
east/southeast. 00Z HREF mean shows PWs climbing to 1.75 inches
over parts of south central/southeast PA with 1000-2000 J/kg of
MUCAPE expected during peak heating. The main threat will be
locally heavy rain as pulse storms become nearly stationary.
Given recent rainfall departures, an isolated FF risk would be
confined mainly to the more vulnerable/urban areas where heavy
rain rates may occur. Expect convective coverage to diminish
again into Friday night.

An upper trough over Ontario and Quebec will deepen across the
Northeast and Mid-Atlantic vicinity on Saturday. A moist boundary
layer will be in place as a cold front moves southeast across
the region during the morning and early afternoon. The SPC D3
outlook does not even have the area in general tstm risk so its
looking like mainly passing showers with fropa early Saturday.

Cooler and drier/less humid air will arrive in the wake of the
front by Saturday night.

&&

.LONG TERM /SUNDAY THROUGH THURSDAY/...
Pleasant and comfortable weather expected Sunday through
Tuesday with a mix of sun/clouds and low humidity.

We should see a warming trend heading into the middle of next
week, as the remnants of TS Cristobal move up the MS valley and
help build an upper-level ridge over the eastern United States.

&&

.AVIATION /19Z THURSDAY THROUGH TUESDAY/...
Focus late this afternoon will be on increasing coverage of
sowers and locally strong to severe thunderstorms. Will include
a 3-4 hour tempo group for TSRA with brief strong wind gusts and
MVFR at all TAF sites except for KBFD where mainly BKN-OVC VFR
and cloudy/cooler conditions will prevail through this evening.

light and variable wind and associated radiational cooling may
promote patchy fog late this evening, mainly in those spots that
receive rain this afternoon.

Outlook...

Fri...AM low cigs possible N Mtns. Scattered PM tsra impacts.

Sat...AM low cigs possible W Mtns.

Sun-Mon...No sig wx expected.

&&

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

&&

SYNOPSIS...Lambert
NEAR TERM...Lambert
SHORT TERM...Lambert/Steinbugl
LONG TERM...Lambert/Evanego
AVIATION...Fitzgerald/Lambert

Hazardous weather outlook, Jun 4, 2:34 PM EDT, 2 hours 41 minutes before

Hazardous Weather Outlook
National Weather Service State College PA
234 PM EDT Thu Jun 4 2020

PAZ004>006-037-051845-
Warren-McKean-Potter-Tioga-
234 PM EDT Thu Jun 4 2020

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...Friday through Wednesday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

PAZ042-051845-
Sullivan-
234 PM EDT Thu Jun 4 2020

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...Friday through Wednesday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

PAZ010>012-017>019-024-025-033-041-045-046-049-051-053-051845-
Elk-Cameron-Northern Clinton-Clearfield-Northern Centre-
Southern Centre-Cambria-Blair-Somerset-Northern Lycoming-
Southern Clinton-Southern Lycoming-Union-Montour-Columbia-
234 PM EDT Thu Jun 4 2020

...SEVERE THUNDERSTORM WATCH 250 IN EFFECT UNTIL 10 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.

   Severe Thunderstorm Watch.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

PAZ026>028-034>036-050-052-056>059-063>066-051845-
Huntingdon-Mifflin-Juniata-Bedford-Fulton-Franklin-Snyder-
Northumberland-Perry-Dauphin-Schuylkill-Lebanon-Cumberland-Adams-
York-Lancaster-
234 PM EDT Thu Jun 4 2020

...SEVERE THUNDERSTORM WATCH 250 IN EFFECT UNTIL 10 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.

   Severe Thunderstorm Watch.

Locally heavy rainfall is expected with many of these storms.
Flooding may result.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

Locally heavy rainfall is possible Friday afternoon and may produce
isolated flooding primarily in more sensitive urban areas.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

In the hours before

Local storm report, Jun 4, 4:58 PM EDT, 17 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
458 PM EDT THU JUN 4 2020

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

0436 PM     TSTM WND DMG     NEWPORT                 40.48N 77.13W
06/04/2020                   PERRY              PA   911 CALL CENTER

            NUMEROUS TREES COMPLETELY BLOCKING JUNIATA
            PARKWAY. CAR TRAPPED.

&&

ART

Local storm report, Jun 4, 5:01 PM EDT, 14 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
501 PM EDT THU JUN 4 2020

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

0438 PM     TSTM WND DMG     1 NE NEWPORT            40.49N 77.11W
06/04/2020                   PERRY              PA   911 CALL CENTER

            TREES AND WIRES COMPLETELY BLOCKING RED HILL
            ROAD.

&&

ART

Local storm report, Jun 4, 5:05 PM EDT, 10 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
505 PM EDT THU JUN 4 2020

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

0436 PM     TSTM WND DMG     1 NNW NEWPORT           40.49N 77.14W
06/04/2020                   PERRY              PA   911 CALL CENTER

            NUMEROUS TREES AND WIRES DOWN COMPLETELY
            ACROSS NORTH 4TH ST AND CREEK ROAD.

&&

ART

Local storm report, Jun 4, 5:09 PM EDT, 6 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
509 PM EDT THU JUN 4 2020

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

0455 PM     HAIL             RENOVO                  41.33N 77.75W
06/04/2020  E0.88 INCH       CLINTON            PA   TRAINED SPOTTER

&&

RXR

Special weather statement, Jun 4, 5:14 PM EDT, 1 minute before

Special Weather Statement
National Weather Service State College PA
514 PM EDT Thu Jun 4 2020

PAZ017>019-024-025-042215-
Northern Centre PA-Clearfield PA-Blair PA-Cambria PA-
Southern Centre PA-
514 PM EDT Thu Jun 4 2020

...STRONG THUNDERSTORMS WILL AFFECT PARTS OF CLEARFIELD...CENTRE...
BLAIR...AND CAMBRIA COUNTIES UNTIL 615 PM EDT...

At 514 PM EDT, Doppler radar indicated strong thunderstorms along a
line extending from Patton to near Prince Gallitzin State Park to
Bellwood. Movement was northeast at 25 mph.

Wind gusts 40 to 50 mph and penny size hail are possible.

Strong thunderstorms will be near...
  Tipton, Bellwood and Sinking Valley around 520 PM EDT.
  Tyrone and Blandburg around 530 PM EDT.
  Bald Eagle around 540 PM EDT.
  Port Matilda, Houtzdale and Sandy Ridge around 605 PM EDT.
  Osceola Mills around 610 PM EDT.
  South Philipsburg, Chester Hill and Jeffries around 615 PM EDT.

Other locations impacted by these storms include West Decatur, Ramey,
Coalport, Glen Hope and Brisbin.

This includes the following COVID-19 Test Sites...
Laboratory Collection Site Philipsburg.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Persons in campgrounds should consider seeking sturdy shelter until
these storms pass.

&&

LAT...LON 4096 7839 4096 7820 4084 7791 4073 7806
      4074 7811 4070 7820 4067 7822 4063 7819
      4056 7828 4058 7856 4063 7867
TIME...MOT...LOC 2114Z 221DEG 20KT 4064 7864 4063 7852 4062 7833

Lambert

Local storm report, Jun 4, 5:15 PM EDT, 0 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE STATE COLLEGE PA
515 PM EDT THU JUN 4 2020

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

0454 PM     TSTM WND DMG     2 NE AMITY HALL         40.47N 76.98W
06/04/2020                   PERRY              PA   911 CALL CENTER

            NUMEROUS TREES AND WIRES DOWN.

&&

ART

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 3, 8:15 PM EDT	Severe Thunderstorm Warning	CTP	Lancaster, York	45 min
Jun 3, 8:52 PM EDT	Severe Thunderstorm Warning	CTP	Lancaster, York	23 min
Jun 4, 2:14 PM EDT	Special Weather Statement	CTP	Fulton	31 min
Jun 4, 2:45 PM EDT	Special Weather Statement	CTP	Fulton	30 min
Jun 4, 3:00 PM EDT	Special Weather Statement	CTP	Centre	30 min
Jun 4, 3:11 PM EDT	Severe Thunderstorm Warning	CTP	Franklin, Fulton, Huntingdon	49 min
Jun 4, 3:22 PM EDT	Special Weather Statement	CTP	Huntingdon	38 min
Jun 4, 3:23 PM EDT	Severe Thunderstorm Warning	CTP	Franklin, Fulton	52 min
Jun 4, 3:44 PM EDT	Special Weather Statement	CTP	Dauphin, Juniata	46 min
Jun 4, 3:52 PM EDT	Special Weather Statement	CTP	Centre	53 min
Jun 4, 4:06 PM EDT	Special Weather Statement	CTP	Mifflin	24 min
Jun 4, 4:25 PM EDT	Special Weather Statement	CTP	Franklin	35 min
Jun 4, 4:35 PM EDT	Severe Thunderstorm Warning	CTP	Dauphin, Juniata, Northumberland, Perry	40 min
Jun 4, 4:36 PM EDT	Severe Thunderstorm Warning	CTP	Adams, Cumberland, Franklin	54 min
Jun 4, 4:43 PM EDT	Special Weather Statement	CTP	Centre	62 min
Jun 4, 4:52 PM EDT	Special Weather Statement	CTP	Clinton	53 min
Jun 4, 4:59 PM EDT	Tornado Warning	CTP	Dauphin, Lebanon, Perry	46 min
Jun 4, 5:14 PM EDT	Special Weather Statement	CTP	Blair	61 min
Jun 4, 5:18 PM EDT	Special Weather Statement	CTP	Fulton	57 min
Jun 4, 5:27 PM EDT	Special Weather Statement	CTP	Adams	33 min
Jun 4, 5:30 PM EDT	Special Weather Statement	CTP	Lycoming	45 min
Jun 4, 5:34 PM EDT	Areal Flood Advisory	CTP	Dauphin, Lebanon, Schuylkill	116 min
Jun 4, 5:43 PM EDT	Severe Thunderstorm Warning	CTP	Lebanon, Schuylkill	47 min
Jun 4, 5:45 PM EDT	Severe Thunderstorm Warning	CTP	Bedford, Franklin, Fulton	60 min
Jun 4, 5:53 PM EDT	Severe Thunderstorm Warning	CTP	Centre, Clearfield	37 min
Jun 4, 5:56 PM EDT	Special Weather Statement	CTP	Adams	34 min
Jun 4, 6:00 PM EDT	Areal Flood Advisory	CTP	Franklin	2 hr
Jun 4, 6:09 PM EDT	Severe Thunderstorm Warning	CTP	Bedford	20 min
Jun 4, 6:16 PM EDT	Flash Flood Warning	CTP	Lebanon, Schuylkill	3 hr
Jun 4, 6:17 PM EDT	Special Weather Statement	CTP	Schuylkill	28 min
Jun 4, 6:25 PM EDT	Special Weather Statement	CTP	Juniata, Mifflin	65 min
Jun 4, 6:25 PM EDT	Severe Thunderstorm Warning	CTP	Cumberland	35 min
Jun 4, 6:28 PM EDT	Severe Thunderstorm Warning	CTP	Cumberland, Franklin, Huntingdon, Juniata, Perry	47 min
Jun 4, 6:31 PM EDT	Severe Thunderstorm Warning	CTP	Adams, York	59 min
Jun 4, 6:32 PM EDT	Special Weather Statement	CTP	Cambria, Clearfield, Elk, Somerset	73 min
Jun 4, 6:33 PM EDT	Special Weather Statement	CTP	Clinton	27 min
Jun 4, 6:41 PM EDT	Special Weather Statement	CTP	Adams	34 min
Jun 4, 6:45 PM EDT	Special Weather Statement	CTP	Huntingdon	30 min
Jun 4, 6:55 PM EDT	Severe Thunderstorm Warning	CTP	Cumberland, Huntingdon, Juniata, Mifflin, Perry	50 min
Jun 4, 6:57 PM EDT	Severe Thunderstorm Warning	CTP	Cumberland, Perry	33 min
Jun 4, 7:13 PM EDT	Severe Thunderstorm Warning	CTP	Blair, Cambria, Centre, Clearfield, Huntingdon	62 min
Jun 4, 7:17 PM EDT	Severe Thunderstorm Warning	CTP	Lancaster, York	58 min
Jun 4, 7:20 PM EDT	Severe Thunderstorm Warning	CTP	Cumberland, Dauphin, Perry	25 min
Jun 4, 7:30 PM EDT	Special Weather Statement	CTP	York	30 min
Jun 4, 7:33 PM EDT	Severe Thunderstorm Warning	CTP	Bedford, Blair, Huntingdon	42 min
Jun 4, 7:41 PM EDT	Severe Thunderstorm Warning	CTP	Cumberland, Dauphin, Juniata, Lebanon, Northumberland, Perry and 2 more	49 min
Jun 4, 7:56 PM EDT	Special Weather Statement	CTP	Cameron	49 min
Jun 4, 7:59 PM EDT	Severe Thunderstorm Warning	CTP	Lancaster, York	61 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.