Alert archive / Pennsylvania / Snow Squall Warnings in 2022

Snow Squall Warning 4, NWS Pittsburgh, PA

November 18, 20224 counties in Pennsylvania; Jefferson County, Ohio; Brooke County, Hancock County, Ohio County, West Virginia

NWS Pittsburgh, PA issued this snow squall warning at Nov 18, 2022, 12:30 PM EST for 4 counties in Pennsylvania; Jefferson County, Ohio; Brooke County, Hancock County, Ohio County, West Virginia. It was in force for 45 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
Nov 18, 2022, 12:30 PM EST (17:30 UTC)
Expired
Nov 18, 2022, 1:15 PM EST
In force
45 min
Issued by
NWS Pittsburgh, PA
Area
Storm-based polygon

Counties Jefferson County, OH, Allegheny County, PA, Beaver County, PA, Butler County, PA, Washington County, PA, Brooke County, WV, Hancock County, WV, Ohio County, WV

The radar

The Pittsburgh radar (KPBZ), 17 km from the middle of the area, began a volume at 17:30 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 (KPIT), launched 12:00Z, 5.5 hours before the alert went out and 24 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-pSkew-T log-p diagram, Pittsburgh, PA at 12:00Z on 2022-11-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Pittsburgh, PA at 12:00Z on 2022-11-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 185 square meters per square second.1939587897117136156Sfc1 km3 km6 km9 kmRMLM
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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
762 m above ground
0-6 km bulk shear
81 kt
0-1 km storm-relative helicity
185 m²/s²
0-3 km storm-relative helicity
218 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The office that day

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

IssuedProductOfficeCountiesLasted
Nov 18, 11:03 AM ESTSpecial Weather StatementPBZButler27 min
Nov 18, 11:36 AM ESTSpecial Weather StatementPBZBeaver24 min
Nov 18, 12:05 PM ESTSpecial Weather StatementPBZBeaver40 min
Nov 18, 1:09 PM ESTSnow Squall WarningPBZAllegheny, Armstrong, Butler, Clarion, Washington, Westmoreland51 min
Nov 18, 1:50 PM ESTSnow Squall WarningPBZAllegheny, Armstrong, Butler, Clarion, Indiana, Jefferson and 1 more55 min
Nov 18, 2:15 PM ESTSpecial Weather StatementPBZFayette, Greene45 min
Nov 18, 2:46 PM ESTSnow Squall WarningPBZArmstrong, Indiana, Jefferson, Westmoreland29 min
Nov 18, 2:56 PM ESTSnow Squall WarningPBZAllegheny, Fayette, Greene, Indiana, Washington, Westmoreland64 min
Nov 18, 4:03 PM ESTSpecial Weather StatementPBZFayette57 min
Nov 18, 4:19 PM ESTSnow Squall WarningPBZFayette, Greene41 min
Nov 18, 5:01 PM ESTSnow Squall WarningPBZFayette59 min
Nov 18, 8:44 AM ESTSpecial Weather StatementPBZColumbiana31 min
Nov 18, 11:01 AM ESTSpecial Weather StatementPBZCarroll29 min

Nearby

Snow Squall Warnings in Pennsylvania, 2022Snow Squall Warnings in West Virginia, 2022Snow Squall Warnings in Ohio, 2022Every snow squall warning in 2022

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.