Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2020

Severe Thunderstorm Warning 83, NWS Pittsburgh, PA

June 10, 20206 counties in Pennsylvania

NWS Pittsburgh, PA issued this severe thunderstorm warning at Jun 10, 2020, 9:52 PM EDT for 6 counties in Pennsylvania. It was in force for 38 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 10, 2020, 9:52 PM EDT (01:52 UTC)
Expired: Jun 10, 2020, 10:30 PM EDT
In force: 38 min
Issued by: NWS Pittsburgh, PA
Area: Storm-based polygon
Tornado: Possible
Hail: 1.0 in
Wind: 60.0 mph

Counties Allegheny County, PA, Beaver County, PA, Butler County, PA, Lawrence County, PA, Mercer County, PA, Venango County, PA

The radar

The Pittsburgh radar (KPBZ), 49 km from the middle of the area, began a volume at 01:52 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
Jun 10, 6:51 PM EDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Pittsburgh, PA (KPIT), launched 00:00Z, 1.9 hours before the alert went out and 61 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: 1006 J/kg
Mixed-layer CIN: -7 J/kg
Mixed-layer LCL: 1383 m above ground
0-6 km bulk shear: 26 kt
0-1 km storm-relative helicity: 113 m²/s²
0-3 km storm-relative helicity: 201 m²/s²
Significant tornado parameter: 0.6
Supercell composite: 8.4

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 Pittsburgh, PA wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 10, 9:10 PM EDT, 42 minutes earlier.

Area forecast discussion, Jun 10, 9:10 PM EDT, 42 minutes before

Area Forecast Discussion...UPDATED
National Weather Service Pittsburgh PA
910 PM EDT Wed Jun 10 2020

.SYNOPSIS...
A cold front will support showers and thunderstorms this evening.
Some storms may be severe. Dry weather will return Thursday under
building high pressure, with temperature returning to near average
through the end of the week.

&&

.NEAR TERM /THROUGH THURSDAY/...
Have cleared part of the watch in Ohio behind the main line of
convection. PoPs were updated to reflect current radar trends.

Previous discussion...
Effective shear and instability will increase as the associated
negatively tilted trough tracks east this evening and a line of
storms capable of producing damaging wind will cross this evening
ahead of the cold front.

&&

.SHORT TERM /THURSDAY NIGHT THROUGH FRIDAY NIGHT/...
Dry conditions return on Thursday with building high pressure behind
the front. It will be noticeably more comfortable with dewpoints
back down into the 50s and daytime highs in the upper 70s. A weak
front is progged to drop south over the area later on Friday but
conditions should remain largely dry with limited moisture...mainly
just resulting in increased cloud coverage.

&&

.LONG TERM /SATURDAY THROUGH WEDNESDAY/...
A persistent upper trough/low is expected to remain across most of
the Eastern CONUS through the long term period. A sfc ridge under
the trough/low should maintain mainly dry weather through much of
the period, though slight to low rain chances are possible on
occasion as waves rotate around the low. Cooler than average
temperatures should recover to seasonable levels toward mid week.

&&

.AVIATION /01Z THURSDAY THROUGH MONDAY/...
Expect VFR conditions with a period of MVFR cigs and vis as a line of
storms pass through the region during the evening hours, generally
from 00Z through 06Z. Behind the convection, lingering MVFR cigs can
be expected for an hour or two before a return to VFR. A second
front will approach the area around dawn. This boundary will bring a
period of restrictive MVFR cigs which will hang around through much
of the morning hours. A return to VFR is expected during the
afternoon.

Gusty surface winds through a couple of hours after FROPA. No
substantial wind direction shift is expected until Thursday
afternoon.

.Outlook...
VFR will largely prevail through the next several days.

&&

.CLIMATE...
Record high temperature for June 10:

PIT...94F (1911)
ZZV...95F (1911)
MGW...98F (1933)
DUJ...87F (2012, 1984)
HLG...94F (1936)
PHD...93F (1999)

&&

.PBZ WATCHES/WARNINGS/ADVISORIES...
MD...None.
OH...None.
PA...None.
WV...None.

&&

Hazardous weather outlook, Jun 10, 9:21 PM EDT, 31 minutes before

Hazardous Weather Outlook...UPDATED
National Weather Service Pittsburgh PA
921 PM EDT Wed Jun 10 2020

OHZ040-041-049-050-059-069-PAZ007-013-020-029-WVZ001>003-120130-
Carroll-Columbiana-Harrison-Jefferson OH-Belmont-Monroe-Mercer-
Lawrence-Beaver-Washington-Hancock-Brooke-Ohio-
921 PM EDT Wed Jun 10 2020

...SEVERE THUNDERSTORM WATCH 279 IN EFFECT UNTIL 1 AM EDT THURSDAY...

This Hazardous Weather Outlook is for east central Ohio, northwest
Pennsylvania, southwest Pennsylvania, western Pennsylvania,
northern West Virginia and the northern panhandle of West Virginia.

.DAY ONE...Tonight.

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

   Severe Thunderstorm Watch.

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

Hazardous weather is not expected at this time.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to Standard Operating Procedures.

OHZ039-048-057-058-068-120130-
Tuscarawas-Coshocton-Muskingum-Guernsey-Noble-
921 PM EDT Wed Jun 10 2020

This Hazardous Weather Outlook is for east central Ohio.

.DAY ONE...Tonight.

Hazardous weather is not expected at this time.

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

Hazardous weather is not expected at this time.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to Standard Operating Procedures.

MDZ001-WVZ511>514-120130-
Garrett-Preston-Eastern Preston-Western Tucker-Eastern Tucker-
921 PM EDT Wed Jun 10 2020

This Hazardous Weather Outlook is for western Maryland and northern
West Virginia.

.DAY ONE...Tonight.

Slight risk for severe thunderstorms this evening. Main threat will
be damaging wind gusts.

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

Hazardous weather is not expected at this time.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to Standard Operating Procedures.

PAZ008-009-014>016-021>023-031-073>076-WVZ004-012-021-509-510-120130-
Venango-Forest-Butler-Clarion-Jefferson PA-Allegheny-Armstrong-
Indiana-Greene-Westmoreland-Westmoreland Ridges-Fayette-
Fayette Ridges-Marshall-Wetzel-Marion-Monongalia-
Ridges of Eastern Monongalia and Northwestern Preston-
921 PM EDT Wed Jun 10 2020

...SEVERE THUNDERSTORM WATCH 279 IN EFFECT UNTIL 1 AM EDT THURSDAY...

This Hazardous Weather Outlook is for northwest Pennsylvania,
southwest Pennsylvania, western Pennsylvania, northern West
Virginia and the northern panhandle of West Virginia.

.DAY ONE...Tonight.

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

   Severe Thunderstorm Watch.

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

Hazardous weather is not expected at this time.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to Standard Operating Procedures.

In the hours before

Local storm report, Jun 10, 8:44 PM EDT, 1 hour 8 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PITTSBURGH PA
844 PM EDT WED JUN 10 2020

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

0805 PM     TSTM WND DMG     COSHOCTON               40.26N  81.85W
06/10/2020                   COSHOCTON          OH   911 CALL CENTER

            TREES DOWN AND POWER LINES DOWN ACROSS THE CITY.
            STREETS IMPACTED: BEACH/CAMBRIDGE. 300 BLOCK/ WALNUT.

&&

EVENT NUMBER PBZ2001062

SKH

Special weather statement, Jun 10, 8:48 PM EDT, 1 hour 4 minutes before

Special Weather Statement
National Weather Service Pittsburgh PA
848 PM EDT Wed Jun 10 2020

OHZ049-050-059-068-069-WVZ001>004-012-110130-
Monroe-Jefferson-Noble-Harrison-Belmont-Marshall-Brooke-Ohio-Hancock-
Wetzel-
848 PM EDT Wed Jun 10 2020

...A LINE OF STRONG THUNDERSTORMS CAPABLE OF PRODUCING SMALL HAIL AND
GUSTY WIND WILL AFFECT SOUTHEASTERN HARRISON...JEFFERSON...MONROE...
BELMONT...SOUTHEASTERN NOBLE...OHIO...NORTHWESTERN WETZEL...
MARSHALL...BROOKE AND SOUTHEASTERN HANCOCK COUNTIES...

At 848 PM EDT, radar indicated strong thunderstorms were located
along a line extending from 6 miles southwest of Cadiz to 8 miles
southwest of Woodsfield. Movement was northeast at 55 mph.

Wind gusts up to 55 mph and small hail are possible with these
storms.

Locations impacted include...
Wheeling...                       Weirton...
Steubenville...                   Moundsville...
Martins Ferry...                  New Martinsville...
St. Clairsville...                Bellaire...
Barnesville...                    Cadiz...
Warwood...                        Wellsburg...

This includes the following highways...
  Interstate 70 in Ohio between mile markers 201 and 225.
  Interstate 70 in West Virginia between mile markers 0 and 14.

These storms may intensify, so monitor local radio or television
stations for additional information and possible warnings from the
National Weather Service.

LAT...LON 3954 8078 3955 8079 3956 8082 3960 8085
      3958 8089 3961 8095 3954 8104 3957 8104
      3957 8105 3958 8126 3960 8126 3961 8128
      3959 8129 3959 8135 4024 8115 4054 8052
      3993 8052 3951 8074
TIME...MOT...LOC 0048Z 238DEG 49KT 4021 8109 3969 8126

RACKLEY

Local storm report, Jun 10, 8:49 PM EDT, 1 hour 3 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PITTSBURGH PA
849 PM EDT WED JUN 10 2020

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

0815 PM     TSTM WND DMG     CLAYSVILLE              39.94N  81.67W
06/10/2020                   GUERNSEY           OH   911 CALL CENTER

            TREES DOWN NEAR ROUTE 313. TIME ESTIMATED BY RADAR.

&&

EVENT NUMBER PBZ2001063

SKH

Local storm report, Jun 10, 8:56 PM EDT, 56 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PITTSBURGH PA
856 PM EDT WED JUN 10 2020

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

0817 PM     TSTM WND DMG     2 ESE BLOOMFIELD        40.05N  81.71W
06/10/2020                   GUERNSEY           OH   911 CALL CENTER

            TREES DOWN ALONG CABIN HILL ROAD AND ROUTE 209.

&&

EVENT NUMBER PBZ2001064

SKH

Local storm report, Jun 10, 9:25 PM EDT, 27 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PITTSBURGH PA
925 PM EDT WED JUN 10 2020

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

0753 PM     TSTM WND DMG     ZANESVILLE              39.95N  82.01W
06/10/2020                   MUSKINGUM          OH   BROADCAST MEDIA

            TREE OF CAR NEAR SHARON ROAD. CAR HEAVILY DAMAGED.
            POWER LINE DOWN ALONG WHEELER ROAD.

&&

EVENT NUMBER PBZ2001065

SKH

Special weather statement, Jun 10, 9:31 PM EDT, 21 minutes before

Special Weather Statement
National Weather Service Pittsburgh PA
931 PM EDT Wed Jun 10 2020

PAZ020-021-029-110200-
Beaver-Washington-Allegheny-
931 PM EDT Wed Jun 10 2020

...A LINE OF STRONG THUNDERSTORMS CAPABLE OF PRODUCING SMALL HAIL AND
GUSTY WIND WILL AFFECT NORTHWESTERN WASHINGTON...SOUTHEASTERN BEAVER
AND NORTHWESTERN ALLEGHENY COUNTIES...

At 931 PM EDT, radar indicated strong thunderstorms were located
along a line extending from 7 miles east of New Cumberland to Avella.
Movement was northeast at 60 mph.

Wind gusts up to 45 mph and small hail are possible with these
storms.

Locations impacted include...
Pittsburgh...                     Mount Lebanon...
Ross Township...                  McCandless Township...
Moon Township...                  Franklin Park...
Avella...                         Shaler Township...
North Side Pittsburgh...          Upper St. Clair...
Hampton Township...               Scott Township...

This includes the following highways...
  Pennsylvania Turnpike between mile markers 30 and 41.
  Interstate 79 in Pennsylvania between mile markers 53 and 78.
  Interstate 376 in Pennsylvania between mile markers 48 and 74.

These storms may intensify, so monitor local radio or television
stations for additional information and possible warnings from the
National Weather Service.

LAT...LON 4044 7991 4017 8050 4046 8048 4064 8014
      4066 8014 4067 8011 4067 7992
TIME...MOT...LOC 0131Z 231DEG 52KT 4053 8047 4027 8048

RACKLEY

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 10, 9:07 PM EDT	Severe Thunderstorm Warning	PBZ	Beaver	23 min
Jun 10, 9:23 PM EDT	Severe Thunderstorm Warning	PBZ	Beaver, Lawrence, Mercer, Washington	37 min
Jun 10, 9:31 PM EDT	Special Weather Statement	PBZ	Allegheny	29 min
Jun 10, 9:34 PM EDT	Tornado Warning	PBZ	Beaver	26 min
Jun 10, 9:47 PM EDT	Tornado Warning	PBZ	Beaver	7 min
Jun 10, 10:23 PM EDT	Severe Thunderstorm Warning	PBZ	Armstrong, Butler, Clarion, Mercer, Venango	27 min
Jun 10, 10:59 PM EDT	Special Weather Statement	PBZ	Forest	16 min
Jun 10, 11:24 PM EDT	Special Weather Statement	PBZ	Fayette	51 min
Jun 10, 11:58 PM EDT	Areal Flood Advisory	PBZ	Allegheny	3 hr
Jun 11, 12:37 AM EDT	Special Weather Statement	PBZ	Indiana	23 min
Jun 10, 8:24 PM EDT	Severe Thunderstorm Warning	PBZ	Carroll, Columbiana, Guernsey, Harrison, Jefferson, Tuscarawas	51 min
Jun 10, 8:27 PM EDT	Severe Thunderstorm Warning	PBZ	Belmont, Guernsey, Harrison, Monroe, Noble	33 min
Jun 10, 8:48 PM EDT	Special Weather Statement	PBZ	Belmont, Jefferson, Monroe	42 min
Jun 10, 9:13 PM EDT	Tornado Warning	PBZ	Columbiana	17 min
Jun 10, 10:36 PM EDT	Special Weather Statement	PBZ	Wetzel	24 min
Jun 11, 1:30 AM EDT	Special Weather Statement	PBZ	Tucker	45 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.