Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2018
Severe Thunderstorm Warning 153, NWS Pittsburgh, PA
NWS Pittsburgh, PA issued this severe thunderstorm warning at Aug 13, 2018, 3:15 PM EDT for Mercer County, Venango County, Pennsylvania. It was in force for 30 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
- Aug 13, 2018, 3:15 PM EDT (19:15 UTC)
- Expired
- Aug 13, 2018, 3:45 PM EDT
- In force
- 30 min
- Issued by
- NWS Pittsburgh, PA
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Mercer County, PA, Venango County, PA
The radar
The Pittsburgh radar (KPBZ), 93 km from the middle of the area, began a volume at 19:17 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.
The nearest sounding before it
Pittsburgh, PA (KAGC), launched 12:00Z, 7.3 hours before the alert went out and 105 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
- 557 J/kg
- Mixed-layer CIN
- -72 J/kg
- Mixed-layer LCL
- 1261 m above ground
- 0-6 km bulk shear
- 8 kt
- 0-1 km storm-relative helicity
- -7 m²/s²
- 0-3 km storm-relative helicity
- 20 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 Aug 13, 2:26 PM EDT, 49 minutes earlier.
Area forecast discussion, Aug 13, 2:26 PM EDT, 49 minutes before
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</html>Hazardous weather outlook, Aug 13, 3:08 AM EDT, 12 hours 7 minutes before
Hazardous Weather Outlook National Weather Service Pittsburgh PA 308 AM EDT Mon Aug 13 2018 MDZ001-OHZ050-059-069-PAZ007>009-013>016-020>023-029-031-073>076- WVZ001>004-012-021-509>514-140715- Garrett-Jefferson-Belmont-Monroe-Mercer-Venango-Forest-Lawrence- Butler-Clarion-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-Preston- Eastern Preston-Western Tucker-Eastern Tucker- 308 AM EDT Mon Aug 13 2018 This Hazardous Weather Outlook is for western Maryland, east central Ohio, northwest Pennsylvania, southwest Pennsylvania, west central Pennsylvania, western Pennsylvania, northern West Virginia and northern panhandle of West Virginia. .DAY ONE...Today and Tonight. Scattered to numerous slow moving showers and thunderstorms are expected today. Locally heavy rain could result in isolated flooding, especially in the afternoon and early evening. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday. 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>041-048-049-057-058-068-140715- Tuscarawas-Carroll-Columbiana-Coshocton-Harrison-Muskingum-Guernsey- Noble- 308 AM EDT Mon Aug 13 2018 This Hazardous Weather Outlook is for east central Ohio. .DAY ONE...Today and Tonight. The probability for widespread hazardous weather is low. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday. 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.
In the hours before
Local storm report, Aug 13, 2:25 PM EDT, 50 minutes before
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</html>Local storm report, Aug 13, 2:33 PM EDT, 42 minutes before
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</html>Special weather statement, Aug 13, 2:43 PM EDT, 32 minutes before
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</html>Special weather statement, Aug 13, 2:49 PM EDT, 26 minutes before
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</html>Local storm report, Aug 13, 3:10 PM EDT, 5 minutes before
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</html>Special weather statement, Aug 13, 3:12 PM EDT, 3 minutes before
Special Weather Statement National Weather Service Pittsburgh PA 312 PM EDT MON AUG 13 2018 PAZ031-131945- Greene- 312 PM EDT MON AUG 13 2018 ...A STRONG THUNDERSTORM CAPABLE OF PRODUCING HAIL...GUSTY WIND AND HEAVY RAIN WILL AFFECT CENTRAL GREENE COUNTY... At 312 PM EDT, a strong thunderstorm was located over Waynesburg, moving southwest at 5 mph. Wind gusts up to 45 mph and hail up to the size of nickels are possible with this storm. Locations impacted include... Waynesburg... Rogersville... This includes Interstate 79 in Pennsylvania between mile markers 11 and 18. Torrential rainfall also is occurring with this storm and may cause localized flooding. Do not drive your vehicle through flooded roadways. This storm may intensify, so monitor local radio or television stations for additional information and possible warnings from the National Weather Service. LAT...LON 3998 8025 3994 8011 3981 8013 3991 8036 TIME...MOT...LOC 1912Z 027DEG 6KT 3993 8020 Kramar
The office that day
Everything else NWS Pittsburgh, PA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 13, 12:04 PM EDT | Special Weather Statement | PBZ | Armstrong | 26 min |
| Aug 13, 12:20 PM EDT | Flash Flood Warning | PBZ | Armstrong | 87 min |
| Aug 13, 12:51 PM EDT | Special Weather Statement | PBZ | Allegheny | 24 min |
| Aug 13, 1:08 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny, Westmoreland | 22 min |
| Aug 13, 1:13 PM EDT | Flash Flood Warning | PBZ | Allegheny | 2 hr |
| Aug 13, 1:23 PM EDT | Severe Thunderstorm Warning | PBZ | Fayette, Westmoreland | 37 min |
| Aug 13, 1:30 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny | 30 min |
| Aug 13, 1:40 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny | 13 min |
| Aug 13, 1:48 PM EDT | Severe Thunderstorm Warning | PBZ | Allegheny, Westmoreland | 27 min |
| Aug 13, 2:05 PM EDT | Areal Flood Advisory | PBZ | Armstrong, Indiana, Jefferson | 115 min |
| Aug 13, 2:11 PM EDT | Special Weather Statement | PBZ | Fayette | 34 min |
| Aug 13, 2:13 PM EDT | Special Weather Statement | PBZ | Washington | 32 min |
| Aug 13, 2:19 PM EDT | Severe Thunderstorm Warning | PBZ | Fayette, Greene, Washington | 26 min |
| Aug 13, 2:43 PM EDT | Special Weather Statement | PBZ | Washington | 32 min |
| Aug 13, 2:49 PM EDT | Special Weather Statement | PBZ | Fayette | 26 min |
| Aug 13, 3:12 PM EDT | Special Weather Statement | PBZ | Greene | 33 min |
| Aug 13, 3:33 PM EDT | Severe Thunderstorm Warning | PBZ | Beaver, Washington | 27 min |
| Aug 13, 3:37 PM EDT | Severe Thunderstorm Warning | PBZ | Washington | 23 min |
| Aug 13, 1:46 PM EDT | Special Weather Statement | PBZ | Tuscarawas | 29 min |
| Aug 13, 3:28 PM EDT | Special Weather Statement | PBZ | Guernsey | 32 min |
| Aug 13, 4:10 PM EDT | Special Weather Statement | PBZ | Harrison | 35 min |
| Aug 13, 4:12 PM EDT | Severe Thunderstorm Warning | PBZ | Harrison | 48 min |
| Aug 13, 4:57 PM EDT | Severe Thunderstorm Warning | PBZ | Guernsey, Harrison, Tuscarawas | 48 min |
| Aug 13, 5:43 PM EDT | Special Weather Statement | PBZ | Guernsey | 32 min |
| Aug 13, 6:00 PM EDT | Special Weather Statement | PBZ | Guernsey | 30 min |
| Aug 13, 6:41 PM EDT | Flash Flood Warning | PBZ | Guernsey, Muskingum | 60 min |
| Aug 13, 3:19 PM EDT | Special Weather Statement | PBZ | Hancock | 26 min |
| Aug 13, 3:45 PM EDT | Severe Thunderstorm Warning | PBZ | Marion, Monongalia, Preston | 29 min |
| Aug 13, 3:59 PM EDT | Flash Flood Warning | PBZ | Marion | 3 hr |
| Aug 13, 4:00 PM EDT | Special Weather Statement | PBZ | Brooke, Hancock | 30 min |
Nearby
Severe Thunderstorm Warnings in Pennsylvania, 2018Every severe thunderstorm warning in 2018
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.