Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2019
Severe Thunderstorm Warning 310, NWS Pittsburgh, PA
NWS Pittsburgh, PA issued this severe thunderstorm warning at Dec 1, 2019, 4:32 PM EST for Allegheny County, Beaver County, Butler County, Pennsylvania. It was in force for 43 min. 3 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
- Dec 1, 2019, 4:32 PM EST (21:32 UTC)
- Expired
- Dec 1, 2019, 5:15 PM EST
- In force
- 43 min
- Issued by
- NWS Pittsburgh, PA
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Allegheny County, PA, Beaver County, PA, Butler County, PA
The radar
The Pittsburgh radar (KPBZ), 24 km from the middle of the area, began a volume at 21:34 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 |
|---|---|---|---|
| Dec 1, 4:40 PM EST | HAIL 0.75 | Aliquippa, PA | |
| Dec 1, 4:41 PM EST | HAIL 0.75 | 3 Nnw New Sheffield, PA | |
| Dec 1, 4:46 PM EST | HAIL 0.75 | Aliquippa, PA |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Pittsburgh, PA (KPIT), launched 12:00Z, 9.5 hours before the alert went out and 37 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 467 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 343 m²/s²
- 0-3 km storm-relative helicity
- 277 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
108 WUUS51 KPBZ 012132 SVRPBZ PAC003-007-019-012215- /O.NEW.KPBZ.SV.W.0310.191201T2132Z-191201T2215Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Warning National Weather Service Pittsburgh PA 432 PM EST Sun Dec 1 2019 The National Weather Service in Pittsburgh has issued a * Severe Thunderstorm Warning for... Eastern Beaver County in western Pennsylvania... Southwestern Butler County in west central Pennsylvania... Northwestern Allegheny County in southwestern Pennsylvania... * Until 515 PM EST. * At 431 PM EST, severe thunderstorms were located along a line extending from New Brighton to near Leetsdale, moving northeast at 25 mph. HAZARD...Wind gusts to 60 mph and quarter-size hail. SOURCE...Radar. IMPACT...Hail damage to vehicles. Damage to trees and power lines. * Locations impacted include... McCandless Township... Cranberry... Franklin Park... Aliquippa... Beaver Falls... Monaca... Hampton Township... Economy... Ambridge... Wexford... New Brighton... Beaver... This includes the following highways... Pennsylvania Turnpike between mile markers 17 and 38. Interstate 79 in Pennsylvania between mile markers 71 and 93. Interstate 279 in Pennsylvania near mile marker 13. Interstate 376 in Pennsylvania between mile markers 34 and 49. PRECAUTIONARY/PREPAREDNESS ACTIONS... Move to an interior room on the lowest floor of a building. Please report severe weather by calling 412-262-1988, posting to the NWS Pittsburgh Facebook page, or using Twitter @NWSPITTSBURGH. && LAT...LON 4093 8002 4060 7996 4052 8036 4073 8038 TIME...MOT...LOC 2131Z 235DEG 24KT 4073 8034 4055 8031 HAIL...1.00IN WIND...60MPH $$ Kramar
1 follow-up statement
372 WWUS51 KPBZ 012156 SVSPBZ Severe Weather Statement National Weather Service Pittsburgh PA 456 PM EST Sun Dec 1 2019 PAC003-007-019-012215- /O.CON.KPBZ.SV.W.0310.000000T0000Z-191201T2215Z/ Beaver PA-Butler PA-Allegheny PA- 456 PM EST Sun Dec 1 2019 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 515 PM EST FOR EAST CENTRAL BEAVER...SOUTHWESTERN BUTLER AND NORTH CENTRAL ALLEGHENY COUNTIES... At 455 PM EST, severe thunderstorms were located along a line extending from near Zelienople to near Economy, moving northeast at 30 mph. HAZARD...Quarter-size hail. SOURCE...Radar. IMPACT...Minor damage to vehicles is possible. Locations impacted include... McCandless Township... Cranberry... Franklin Park... Hampton Township... Economy... Wexford... Zelienople... Seven Fields... Gibsonia... Evans City... Mars... Edgeworth... This includes the following highways... Pennsylvania Turnpike between mile markers 23 and 38. Interstate 79 in Pennsylvania between mile markers 71 and 91. PRECAUTIONARY/PREPAREDNESS ACTIONS... Please report severe weather by calling 412-262-1988, posting to the NWS Pittsburgh Facebook page, or using Twitter @NWSPITTSBURGH. && LAT...LON 4055 8019 4080 8018 4089 8001 4060 7996 TIME...MOT...LOC 2155Z 235DEG 24KT 4082 8017 4064 8014 HAIL...1.00IN WIND...<50MPH $$
The office that day
Everything else NWS Pittsburgh, PA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 1, 3:58 PM EST | Winter Weather Advisory | PBZ | Fayette, Westmoreland | 41 hr |
| Dec 1, 4:25 PM EST | Severe Thunderstorm Warning | PBZ | Lawrence | 39 min |
| Dec 1, 4:50 PM EST | Special Weather Statement | PBZ | Butler | 25 min |
| Dec 1, 4:59 PM EST | Severe Thunderstorm Warning | PBZ | Allegheny, Butler | 46 min |
Nearby
Severe Thunderstorm Warnings in Pennsylvania, 2019Every severe thunderstorm warning in 2019
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.