Alert archive / Ohio / Severe Thunderstorm Warnings in 2020
Severe Thunderstorm Warning 36, NWS Pittsburgh, PA
NWS Pittsburgh, PA issued this severe thunderstorm warning at Apr 8, 2020, 12:23 AM EDT for Beaver County, Butler County, Lawrence County, Pennsylvania; 4 counties in Ohio; Hancock County, West Virginia. It was in force for 52 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
- Apr 8, 2020, 12:23 AM EDT (04:23 UTC)
- Expired
- Apr 8, 2020, 1:15 AM EDT
- In force
- 52 min
- Issued by
- NWS Pittsburgh, PA
- Area
- Storm-based polygon
- Tornado
- Possible
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Carroll County, OH, Columbiana County, OH, Jefferson County, OH, Tuscarawas County, OH, Beaver County, PA, Butler County, PA, Lawrence County, PA, Hancock County, WV
The radar
The Pittsburgh radar (KPBZ), 40 km from the middle of the area, began a volume at 04:23 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 |
|---|---|---|---|
| Apr 7, 11:40 PM EDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Pittsburgh, PA (KPIT), launched 00:00Z, 4.4 hours before the alert went out and 55 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
- 43 J/kg
- Mixed-layer CIN
- -141 J/kg
- Mixed-layer LCL
- 1005 m above ground
- 0-6 km bulk shear
- 59 kt
- 0-1 km storm-relative helicity
- 346 m²/s²
- 0-3 km storm-relative helicity
- 427 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 Pittsburgh, PA wrote its last area forecast discussion before this severe thunderstorm warning went out at Apr 7, 8:08 PM EDT, 4 hours 15 minutes earlier.
Area forecast discussion, Apr 7, 8:08 PM EDT, 4 hours 15 minutes before
Area Forecast Discussion National Weather Service Pittsburgh PA 808 PM EDT Tue Apr 7 2020 .SYNOPSIS... More showers and storms later tonight will give way to a dry Wednesday. Additional rain is expected Thursday with a cold front before dry weather returns this weekend. && .NEAR TERM /UNTIL 6 AM WEDNESDAY MORNING/... A brief period of shortwave ridging will maintain dry weather for a few hours this evening, but low pressure moving off the Great Lakes along a warm front will spawn additional, and more widespread convection as the night progresses. A severe threat remains, albeit a diminishing one given nocturnal cooling, but with high shear and mid level lapse rates, the threat of hail is likely to continue through the night. System and convective element progression in the strong wind field will preclude a widepspread flood threat though. && .SHORT TERM /6 AM WEDNESDAY MORNING THROUGH FRIDAY/... Mid-morning Wednesday shortwave ridging will ensue coincident with a brief dry period and above normal temperature. Late Wednesday a positively tilted trough North of the Great Lakes will drag a robust cold front through the area with another round of precipitation possible through the overnight into Thursday. Much colder air will arrive behind the front and may prompt a change to snow Thursday night. At this time, only minor-to- trace accumulations are expected north of I-80. && .LONG TERM /FRIDAY NIGHT THROUGH TUESDAY/... Shortwaves embedded in NW flow will bring the chance for rain/mixed with snow showers and cold temperature Friday. At this time little to no accumulation is expected. High pressure returns Saturday, returning dry weather through much of the weekend. Crossing low pressure and upper troughing will return rain chances late this weekend into early next week. Temperature will moderate back to the seasonal norm through the weekend. && .AVIATION /00Z WEDNESDAY THROUGH SUNDAY/... Shortwave ridging has suppressed convection this eve, but another more widespread round of shra/tsra is anticipated with the next crossing shortwave tonight. Expect deterioration to IFR with improvement on Wednesday via building high pres. .Outlook... Expect conditions to degrade once again with a cold front approach and passage on Thursday. && .PBZ WATCHES/WARNINGS/ADVISORIES... MD...None. OH...None. PA...None. WV...None. &&
Hazardous weather outlook, Apr 7, 11:47 PM EDT, 36 minutes before
Hazardous Weather Outlook National Weather Service Pittsburgh PA 1147 PM EDT Tue Apr 7 2020 MDZ001-WVZ511>514-090400- Garrett-Preston-Eastern Preston-Western Tucker-Eastern Tucker- 1147 PM EDT Tue Apr 7 2020 This Hazardous Weather Outlook is for western Maryland and northern West Virginia. .DAY ONE...Tonight. Thunderstorms are expected late tonight. Some storms may become severe with large hail and possible some damaging gusts. .DAYS TWO THROUGH SEVEN...Wednesday through Monday. No hazardous weather is expected at this time. .SPOTTER INFORMATION STATEMENT... Weather spotters are encouraged to report significant weather conditions according to Standard Operating Procedures. OHZ039>041-048>050-057>059-068-069-PAZ007>009-013>016-020>023-029- 031-073>076-WVZ001>004-012-021-509-510-090400- Tuscarawas-Carroll-Columbiana-Coshocton-Harrison-Jefferson OH- Muskingum-Guernsey-Belmont-Noble-Monroe-Mercer-Venango-Forest- Lawrence-Butler-Clarion-Jefferson PA-Beaver-Allegheny-Armstrong- Indiana-Washington-Greene-Westmoreland-Westmoreland Ridges-Fayette- Fayette Ridges-Hancock-Brooke-Ohio-Marshall-Wetzel-Marion-Monongalia- Ridges of Eastern Monongalia and Northwestern Preston- 1147 PM EDT Tue Apr 7 2020 ...SEVERE THUNDERSTORM WATCH 85 IN EFFECT UNTIL 6 AM EDT WEDNESDAY... 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. Thunderstorms are expected late tonight. Some storms may become severe with large hail and possible some damaging gusts. .DAYS TWO THROUGH SEVEN...Wednesday through Monday. 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
Special weather statement, Apr 7, 11:19 PM EDT, 1 hour 4 minutes before
Special Weather Statement
National Weather Service Pittsburgh PA
1119 PM EDT Tue Apr 7 2020
PAZ007-080345-
Mercer-
1119 PM EDT Tue Apr 7 2020
...A STRONG THUNDERSTORM CAPABLE OF PRODUCING HAIL AND GUSTY WIND
WILL AFFECT SOUTHERN MERCER COUNTY...
At 1119 PM EDT, a strong thunderstorm was located near Hermitage,
moving east at 45 mph.
Wind gusts up to 45 mph and hail up to the size of nickels are
possible with this storm.
Locations impacted include...
Hermitage... Sharon...
Grove City... Sharpsville...
Farrell... Mercer...
West Middlesex... Clark...
Wheatland... Jackson Center...
This includes the following highways...
Interstate 79 in Pennsylvania between mile markers 111 and 123.
Interstate 80 in Pennsylvania between mile markers 0 and 27.
This storm may intensify, so monitor local radio or television
stations for additional information and possible warnings from the
National Weather Service.
LAT...LON 4125 8000 4117 8000 4107 8010 4111 8015
4112 8026 4113 8026 4113 8052 4133 8052
TIME...MOT...LOC 0319Z 275DEG 41KT 4120 8038Special weather statement, Apr 7, 11:32 PM EDT, 51 minutes before
Special Weather Statement
National Weather Service Pittsburgh PA
1132 PM EDT Tue Apr 7 2020
PAZ015-016-080400-
Jefferson-Clarion-
1132 PM EDT Tue Apr 7 2020
...A STRONG THUNDERSTORM CAPABLE OF PRODUCING HAIL AND GUSTY WIND
WILL AFFECT CENTRAL JEFFERSON AND EAST CENTRAL CLARION COUNTIES...
At 1132 PM EDT, a strong thunderstorm was located 7 miles east of
Clarion, moving east at 45 mph.
Wind gusts up to 45 mph and hail up to the size of nickels are
possible with this storm.
Locations impacted include...
Clarion... Brookville...
Reynoldsville... Brockway...
Sykesville... Falls Creek...
Strattanville... Summerville...
Limestone... Corsica...
Sigel... Fisher...
This includes Interstate 80 in Pennsylvania between mile markers 60
and 96.
This storm may intensify, so monitor local radio or television
stations for additional information and possible warnings from the
National Weather Service.
LAT...LON 4120 7874 4120 7877 4113 7880 4104 7880
4111 7945 4126 7943 4130 7882 4126 7874
TIME...MOT...LOC 0332Z 275DEG 41KT 4117 7925Local storm report, Apr 8, 12:04 AM EDT, 19 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PITTSBURGH PA
1204 AM EDT WED APR 08 2020
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1154 PM HAIL BROOKVILLE 41.16N 79.08W
04/07/2020 E0.75 INCH JEFFERSON PA 911 CALL CENTER
&&
EVENT NUMBER PBZ2000792
BROWNSpecial weather statement, Apr 8, 12:04 AM EDT, 19 minutes before
Special Weather Statement
National Weather Service Pittsburgh PA
1204 AM EDT Wed Apr 8 2020
PAZ016-080430-
Jefferson-
1204 AM EDT Wed Apr 8 2020
...A STRONG THUNDERSTORM CAPABLE OF PRODUCING HAIL AND GUSTY WIND
WILL AFFECT CENTRAL JEFFERSON COUNTY...
At 1203 AM EDT, a strong thunderstorm was located near Reynoldsville,
or 8 miles west of DuBois, moving east at 45 mph.
Wind gusts up to 45 mph and hail up to the size of nickels are
possible with this storm.
Locations impacted include...
Brookville... Reynoldsville...
Brockway... Sykesville...
Falls Creek...
This includes Interstate 80 in Pennsylvania between mile markers 80
and 96.
This storm may intensify, so monitor local radio or television
stations for additional information and possible warnings from the
National Weather Service.
LAT...LON 4120 7877 4114 7880 4103 7880 4106 7909
4125 7908 4124 7874 4123 7874 4123 7871
4120 7871
TIME...MOT...LOC 0403Z 274DEG 40KT 4114 7892Special weather statement, Apr 8, 12:10 AM EDT, 13 minutes before
Special Weather Statement
National Weather Service Pittsburgh PA
1210 AM EDT Wed Apr 8 2020
PAZ007>009-014>016-022-080500-
Armstrong-Jefferson-Forest-Butler-Clarion-Venango-Mercer-
1210 AM EDT Wed Apr 8 2020
...A LINE OF STRONG THUNDERSTORMS CAPABLE OF PRODUCING HAIL AND GUSTY
WIND WILL AFFECT MERCER...VENANGO...NORTHEASTERN BUTLER...
NORTHWESTERN JEFFERSON...NORTHWESTERN ARMSTRONG...CENTRAL CLARION AND
FOREST COUNTIES...
At 1210 AM EDT, radar indicated strong thunderstorms were located
along a line extending from near Chapman State Park to near
Sharpsville. Movement was southeast at 65 mph.
Wind gusts up to 55 mph and hail up to the size of nickels are
possible with these storms.
Locations impacted include...
Hermitage... Sharon...
Oil City... Grove City...
Franklin... Clarion...
Sharpsville... Marienville...
Knox... Greenville...
Sugarcreek... Tionesta...
This includes the following highways...
Interstate 79 in Pennsylvania between mile markers 114 and 138.
Interstate 80 in Pennsylvania between mile markers 12 and 62.
These storms may intensify, so monitor local radio or television
stations for additional information and possible warnings from the
National Weather Service.
LAT...LON 4144 7896 4145 7906 4142 7907 4142 7909
4134 7909 4138 7897 4137 7897 4102 7977
4125 8052 4149 8052 4149 8000 4162 7983
4162 7895
TIME...MOT...LOC 0410Z 305DEG 58KT 4177 7926 4128 8057Special weather statement, Apr 8, 12:12 AM EDT, 11 minutes before
Special Weather Statement
National Weather Service Pittsburgh PA
1212 AM EDT Wed Apr 8 2020
OHZ040-041-PAZ007-013-014-020-080500-
Columbiana-Carroll-Butler-Lawrence-Mercer-Beaver-
1212 AM EDT Wed Apr 8 2020
...A LINE OF STRONG THUNDERSTORMS CAPABLE OF PRODUCING HAIL AND GUSTY
WIND WILL AFFECT COLUMBIANA...NORTHEASTERN CARROLL...SOUTHWESTERN
MERCER...BEAVER...LAWRENCE AND NORTHERN BUTLER COUNTIES...
At 1211 AM EDT, radar indicated strong thunderstorms were located
along a line extending from near New Wilmington to near Minerva.
Movement was east at 50 mph.
Wind gusts up to 45 mph and hail up to the size of nickels are
possible with these storms.
Locations impacted include...
New Castle... Hermitage...
Sharon... Butler...
Salem... East Liverpool...
Beaver Falls... Columbiana...
Monaca... East Palestine...
Wellsville... Ellwood City...
This includes the following highways...
Pennsylvania Turnpike between mile markers 1 and 23.
Interstate 79 in Pennsylvania between mile markers 85 and 112.
Interstate 80 in Pennsylvania between mile markers 0 and 9.
Interstate 376 in Pennsylvania between mile markers 4 and 40.
These storms may intensify, so monitor local radio or television
stations for additional information and possible warnings from the
National Weather Service.
LAT...LON 4099 7969 4054 8052 4064 8052 4061 8057
4063 8060 4062 8063 4058 8067 4058 8074
4060 8075 4060 8079 4073 8119 4073 8109
4090 8108 4090 8090 4093 8089 4093 8082
4090 8082 4090 8052 4124 8052
TIME...MOT...LOC 0411Z 275DEG 45KT 4108 8029 4076 8102The office that day
Everything else NWS Pittsburgh, PA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 7, 11:04 PM EDT | Special Weather Statement | PBZ | Venango | 26 min |
| Apr 7, 11:19 PM EDT | Special Weather Statement | PBZ | Mercer | 26 min |
| Apr 7, 11:27 PM EDT | Severe Thunderstorm Warning | PBZ | Forest | 33 min |
| Apr 7, 11:31 PM EDT | Severe Thunderstorm Warning | PBZ | Forest, Venango | 29 min |
| Apr 7, 11:32 PM EDT | Special Weather Statement | PBZ | Clarion, Jefferson | 28 min |
| Apr 7, 11:35 PM EDT | Severe Thunderstorm Warning | PBZ | Lawrence, Mercer | 40 min |
| Apr 7, 11:47 PM EDT | Severe Thunderstorm Warning | PBZ | Butler, Mercer, Venango | 43 min |
| Apr 8, 12:04 AM EDT | Special Weather Statement | PBZ | Jefferson | 26 min |
| Apr 8, 12:10 AM EDT | Special Weather Statement | PBZ | Clarion, Forest, Mercer, Venango | 50 min |
| Apr 8, 12:12 AM EDT | Special Weather Statement | PBZ | Beaver, Butler, Lawrence | 48 min |
| Apr 8, 12:30 AM EDT | Severe Thunderstorm Warning | PBZ | Butler, Lawrence, Mercer | 30 min |
| Apr 8, 12:37 AM EDT | Tornado Warning | PBZ | Beaver | 11 min |
| Apr 8, 12:47 AM EDT | Severe Thunderstorm Warning | PBZ | Allegheny, Beaver, Butler, Washington | 43 min |
| Apr 8, 1:11 AM EDT | Severe Thunderstorm Warning | PBZ | Allegheny, Butler, Indiana, Washington, Westmoreland | 49 min |
| Apr 8, 1:17 AM EDT | Tornado Warning | PBZ | Allegheny, Westmoreland | 6 min |
| Apr 8, 1:22 AM EDT | Severe Thunderstorm Warning | PBZ | Allegheny, Armstrong, Indiana, Washington, Westmoreland | 39 min |
| Apr 8, 1:30 AM EDT | Special Weather Statement | PBZ | Washington | 30 min |
| Apr 8, 1:39 AM EDT | Severe Thunderstorm Warning | PBZ | Allegheny, Fayette, Indiana, Washington, Westmoreland | 51 min |
| Apr 8, 1:53 AM EDT | Special Weather Statement | PBZ | Greene, Washington | 37 min |
| Apr 8, 2:06 AM EDT | Special Weather Statement | PBZ | Fayette | 24 min |
| Apr 8, 1:07 AM EDT | Severe Thunderstorm Warning | PBZ | Carroll, Coshocton, Harrison, Jefferson, Tuscarawas | 19 min |
| Apr 8, 2:08 AM EDT | Special Weather Statement | PBZ | Muskingum | 37 min |
| Apr 8, 2:42 AM EDT | Special Weather Statement | PBZ | Monroe, Noble | 33 min |
| Apr 8, 3:20 AM EDT | Special Weather Statement | PBZ | Noble | 25 min |
| Apr 8, 2:24 AM EDT | Special Weather Statement | PBZ | Marion, Monongalia, Preston | 36 min |
| Apr 8, 2:32 AM EDT | Severe Thunderstorm Warning | PBZ | Preston | 43 min |
| Apr 8, 2:57 AM EDT | Severe Thunderstorm Warning | PBZ | Marion, Monongalia, Preston | 25 min |
| Apr 8, 3:02 AM EDT | Severe Thunderstorm Warning | PBZ | Marion | 20 min |
| Apr 8, 3:18 AM EDT | Special Weather Statement | PBZ | Tucker | 27 min |
Nearby
Severe Thunderstorm Warnings in Ohio, 2020Severe Thunderstorm Warnings in Pennsylvania, 2020Severe Thunderstorm Warnings in West Virginia, 2020Every 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.