Alert archive / Pennsylvania / Severe Thunderstorm Warnings in 2017
Severe Thunderstorm Warning 168, NWS Pittsburgh, PA
NWS Pittsburgh, PA issued this severe thunderstorm warning at Aug 17, 2017, 4:45 PM EDT for Washington County, Pennsylvania. 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
- Aug 17, 2017, 4:45 PM EDT (20:45 UTC)
- Expired
- Aug 17, 2017, 5:30 PM EDT
- In force
- 45 min
- Issued by
- NWS Pittsburgh, PA
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
County Washington County, PA
The radar
The Pittsburgh radar (KPBZ), 38 km from the middle of the area, began a volume at 20:48 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, 8.8 hours before the alert went out and 28 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
- 28 J/kg
- Mixed-layer CIN
- -59 J/kg
- Mixed-layer LCL
- 1143 m above ground
- 0-6 km bulk shear
- 23 kt
- 0-1 km storm-relative helicity
- 77 m²/s²
- 0-3 km storm-relative helicity
- 104 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 17, 3:29 PM EDT, 1 hour 16 minutes earlier.
Area forecast discussion, Aug 17, 3:29 PM EDT, 1 hour 16 minutes before
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</html>Hazardous weather outlook, Aug 17, 1:01 PM EDT, 3 hours 44 minutes before
Hazardous Weather Outlook National Weather Service Pittsburgh PA 101 PM EDT Thu Aug 17 2017 OHZ039>041-048>050-057>059-068-069-PAZ007>009-013>015-020>022-029- WVZ001>004-181200- Tuscarawas-Carroll-Columbiana-Coshocton-Harrison-Jefferson-Muskingum- Guernsey-Belmont-Noble-Monroe-Mercer-Venango-Forest-Lawrence-Butler- Clarion-Beaver-Allegheny-Armstrong-Washington-Hancock-Brooke-Ohio- Marshall- 101 PM EDT Thu Aug 17 2017 This Hazardous Weather Outlook is for east central Ohio, northwest Pennsylvania, southwest Pennsylvania, west central Pennsylvania, western Pennsylvania, northern West Virginia and northern panhandle of West Virginia. .DAY ONE...This Afternoon and Tonight. There is a slight risk of thunderstorms reaching severe levels this afternoon into the overnight. Damaging wind gusts are the primary threat. In addition, showers and storms may produce heavy downpours which could lead to localized flooding. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. 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. MDZ001-PAZ016-023-031-073>076-WVZ012-021-509>514-181200- Garrett-Jefferson-Indiana-Greene-Westmoreland-Westmoreland Ridges- Fayette-Fayette Ridges-Wetzel-Marion-Monongalia- Ridges of Eastern Monongalia and Northwestern Preston-Preston- Eastern Preston-Western Tucker-Eastern Tucker- 101 PM EDT Thu Aug 17 2017 This Hazardous Weather Outlook is for western Maryland, southwest Pennsylvania, west central Pennsylvania and northern West Virginia. .DAY ONE...This Afternoon and Tonight. Showers and storms late today and overnight may produce heavy downpours which could lead to localized flooding. Isolated storms could reach severe levels with damaging wind gusts as the main threat. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. 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 17, 4:44 PM EDT, 1 minute before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PITTSBURGH PA
444 PM EDT THU AUG 17 2017
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0217 PM TSTM WND DMG 19 NE UHRICHSVILLE 40.59N 81.10W
08/17/2017 CARROLL OH EMERGENCY MNGR
NUMEROUS TREES UPROOTED AND RIPPED OFF ALONG FRESNO
ROAD... FISHERMAN ROAD... AND BACON ROAD
&&
EVENT NUMBER PBZ1702013The office that day
Everything else NWS Pittsburgh, PA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 17, 5:52 PM EDT | Special Weather Statement | PBZ | Washington | 23 min |
| Aug 17, 7:23 PM EDT | Severe Thunderstorm Warning | PBZ | Mercer | 22 min |
| Aug 17, 7:41 PM EDT | Tornado Warning | PBZ | Mercer | 19 min |
| Aug 17, 7:08 PM EDT | Special Weather Statement | PBZ | Monroe | 22 min |
Nearby
Severe Thunderstorm Warnings in Pennsylvania, 2017Every severe thunderstorm warning in 2017
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.