Alert archive / Pennsylvania / Special Weather Statements in 2017
Special Weather Statement, NWS Pittsburgh, PA
NWS Pittsburgh, PA issued this special weather statement at Feb 9, 2017, 7:07 PM EST for Allegheny County, Pennsylvania. It was in force for 38 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Feb 9, 2017, 7:07 PM EST (00:07 UTC)
- Expired
- Feb 9, 2017, 7:45 PM EST
- In force
- 38 min
- Issued by
- NWS Pittsburgh, PA
County Allegheny County, PA
The radar
The Pittsburgh radar (KPBZ), 32 km from the middle of the area, began a volume at 00:07 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 00:00Z, 0.1 hours before the alert went out and 27 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
- 1022 m above ground
- 0-6 km bulk shear
- 96 kt
- 0-1 km storm-relative helicity
- 243 m²/s²
- 0-3 km storm-relative helicity
- 267 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
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</html>What forecasters said that day
The local office's own words before this special weather statement 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 special weather statement went out at Feb 9, 6:43 PM EST, 24 minutes earlier.
Area forecast discussion, Feb 9, 6:43 PM EST, 24 minutes before
Area Forecast Discussion
National Weather Service Pittsburgh PA
643 PM EST Thu Feb 9 2017
.SYNOPSIS...
Snow showers will continue through the afternoon before high
pressure begins to move over the region and dry conditions
resume overnight. Warmer temperatures and rain chances return
for the weekend.
&&
.NEAR TERM /THROUGH FRIDAY/...
Updated to reflect current snow shower coverage via radar and
hi-res models. As lapse rates weaken and instability is lost,
coverage and intensity of snow showers will begin to wane.
However, upslope flow will continue to create accumulating snow
showers in the ridges into the evening hours. Here, snow will
begin to shut off around midnight as surface ridging increases.
Will continue ongoing headlines for now. Hourly temperatures
modified with a hi-res guidance blend. Lows tonight will be
challenging, depending on the amount of clearing over the fresh
snow.
&&
.SHORT TERM /FRIDAY NIGHT THROUGH SUNDAY NIGHT/...
Ridging and high pressure will keep conditions dry through much
of Saturday before moisture returns via southwest flow and
helps support rain along a warm front extending from the
Midwest. This next system will track along the southern Great
Lakes and allow much warmer than normal temperatures to advect
through the weekend with values nearly 20 above average. Expect
rain showers to persist through Sunday night until the frontal
passage. Have maintained likely pops with the passage of these
fronts.
&&
.LONG TERM /MONDAY THROUGH THURSDAY/...
Building ridging should maintain some dry weather for early
next week. The next chance for precipitation is projected in
the midweek while an upper low digs towards the NE from
central Canada.Temperatures should be near or a few degrees
above seasonal levels. Used superblend guidance through the long
term to smooth out individual model differences and account for
uncertainty.
&&
.AVIATION /00Z FRIDAY THROUGH TUESDAY/...
Snow showers will continue to decrease in coverage/intensity
this evening. MVFR/isolated IFR conditions will continue through
03Z. Overnight, VFR or high-end MVFR ceiling will linger through
the night, and gusty NW winds will start to diminish. VFR will
continue past sunrise on Friday, with winds settling towards the
southwest.
.OUTLOOK...
Restrictions are possible again with a weekend front.
&&
.PBZ WATCHES/WARNINGS/ADVISORIES...
MD...Winter Storm Warning until 10 PM EST this evening for MDZ001.
OH...None.
PA...None.
WV...Winter Storm Warning until 7 PM EST this evening for WVZ512-
513.
Winter Storm Warning until 10 PM EST this evening for WVZ514.
&&Hazardous weather outlook, Feb 9, 6:54 PM EST, 13 minutes before
Hazardous Weather Outlook National Weather Service Pittsburgh PA 654 PM EST Thu Feb 9 2017 MDZ001-OHZ039>041-048>050-057>059-068-069-PAZ007>009-013>016-020>023- 029-031-073>076-WVZ001>004-012-021-509>514-110000- Garrett-Tuscarawas-Carroll-Columbiana-Coshocton-Harrison-Jefferson- Muskingum-Guernsey-Belmont-Noble-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- 654 PM EST Thu Feb 9 2017 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...Tonight. No hazardous weather is expected at this time. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. No hazardous weather is expected at this time. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time.
In the hours before
Local storm report, Feb 9, 5:49 PM EST, 1 hour 18 minutes before
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<div class="status" id="status">Temporary Notice</div>
<h1 id="headline">This service is currently unavailable.</h1>
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</p>
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Please try again in a few minutes.
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</html>Local storm report, Feb 9, 5:50 PM EST, 1 hour 17 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PITTSBURGH PA
550 PM EST THU FEB 09 2017
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0549 PM SNOW FARMINGTON 39.81N 79.57W
02/09/2017 M10.6 INCH FAYETTE PA TRAINED SPOTTER
&&
EVENT NUMBER PBZ1700739
XXLocal storm report, Feb 9, 6:12 PM EST, 55 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PITTSBURGH PA
612 PM EST THU FEB 09 2017
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0611 PM SNOW PITTSBURGH 40.44N 79.98W
02/09/2017 M3.5 INCH ALLEGHENY PA NWS EMPLOYEE
SOUTH SIDE
&&
EVENT NUMBER PBZ1700740
XXLocal storm report, Feb 9, 6:18 PM EST, 49 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PITTSBURGH PA
618 PM EST THU FEB 09 2017
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0454 PM SNOW SAINT GEORGE 39.17N 79.70W
02/09/2017 M5.8 INCH TUCKER WV TRAINED SPOTTER
&&
EVENT NUMBER PBZ1700741
TAXLocal storm report, Feb 9, 7:07 PM EST, 0 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PITTSBURGH PA
707 PM EST THU FEB 09 2017
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0430 PM SNOW 1 NW LATROBE 40.32N 79.39W
02/09/2017 M6.5 INCH WESTMORELAND PA COCORAHS
24 HOUR SNOWFALL.
0706 PM SNOW 4 W OKLAHOMA 40.58N 79.65W
02/09/2017 M6.2 INCH WESTMORELAND PA TRAINED SPOTTER
&&
EVENT NUMBER PBZ1700742
EVENT NUMBER PBZ1700743
XXSpecial weather statement, Feb 9, 7:07 PM EST, 0 minutes before
Special Weather Statement National Weather Service Pittsburgh PA 707 PM EST THU FEB 9 2017 PAZ014-021-073-100045- Butler-Westmoreland-Allegheny- 707 PM EST THU FEB 9 2017 ...AN INTENSE SNOW SQUALL WILL AFFECT SOUTH CENTRAL BUTLER... NORTHEASTERN ALLEGHENY AND NORTHWESTERN WESTMORELAND COUNTIES... At 706 PM EST, an intense snow squall was located over Gibsonia, or near McCandless Township, moving southeast at 30 mph. Locations impacted include... Penn Hills... McCandless Township... Monroeville... Franklin Park... Shaler Township... Plum... Murrysville... Hampton Township... New Kensington... Lower Burrell... Harrison Township... O'hara Township... This includes the following highways... Pennsylvania Turnpike between mile markers 32 and 56. Interstate 79 in Pennsylvania near mile marker 45. Visibility will drop quickly to less than a half mile in this intense squall. Use caution if you must travel through this squall. Rapid changes in visibility and road conditions are likely to lead to accidents. Consider delaying travel until the squall passes. LAT...LON 4043 7973 4061 8010 4073 8002 4057 7961 TIME...MOT...LOC 0006Z 299DEG 26KT 4064 7998 CL
The office that day
Everything else NWS Pittsburgh, PA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 9, 8:31 PM EST | Wind Chill Advisory | PBZ | Tucker | 7 hr |
Nearby
Special Weather Statements in Pennsylvania, 2017Every special weather statement 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.