Alert archive / West Virginia / Special Weather Statements in 2021
Special Weather Statement, NWS Pittsburgh, PA
NWS Pittsburgh, PA issued this special weather statement at Oct 21, 2021, 6:36 PM EDT for Marshall County, Wetzel County, West Virginia; Monroe County, Ohio. It was in force for 39 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
- Oct 21, 2021, 6:36 PM EDT (22:36 UTC)
- Expired
- Oct 21, 2021, 7:15 PM EDT
- In force
- 39 min
- Issued by
- NWS Pittsburgh, PA
- Hail
- 0.00 in
- Wind
- 55
Counties Monroe County, OH, Marshall County, WV, Wetzel County, WV
The radar
The Pittsburgh radar (KPBZ), 115 km from the middle of the area, began a volume at 22:39 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, 10.6 hours before the alert went out and 108 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
- 1175 m above ground
- 0-6 km bulk shear
- 48 kt
- 0-1 km storm-relative helicity
- 105 m²/s²
- 0-3 km storm-relative helicity
- 188 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 Oct 21, 3:52 PM EDT, 2 hours 44 minutes earlier.
Area forecast discussion, Oct 21, 3:52 PM EDT, 2 hours 44 minutes before
Area Forecast Discussion National Weather Service Pittsburgh PA 352 PM EDT Thu Oct 21 2021 .SYNOPSIS... Showers and a few thunderstorms will accompany a cold front across the region this evening. && .NEAR TERM /UNTIL 6 AM FRIDAY MORNING/... No changes were needed for the early eve update as low pressure is on track to dig across the Great Lakes and drag a cold front acrs the Upr OH this eve. Showers and a few thunderstorms will accompany that front with a continued chance for isolated wind damage given the very strong wind field on the flank of that low. A lack of instability continues to be the main inhibitor. As a longwave trough sets up over the Great Lakes tonight into Friday, an additional embedded shortwave may provide enough vertical motion to promote localized light showers and/or drizzle early Friday morning given the saturating boundary layer in a cold advection regime. && .SHORT TERM /6 AM FRIDAY MORNING THROUGH SATURDAY NIGHT/... A series of shortwaves with their jet maxima will cross the region Friday through Saturday as upper trough remains positioned over the Great Lakes. Periods of mostly isolated showers are possible while clouds remain fairly abundant. The lack of warming and insolation plus remnant cold advection will keep area temperature a few degrees below normal. && .LONG TERM /SUNDAY THROUGH THURSDAY/... Surface low pressure is expected to deepen and slowly lift from the Central Plains Sunday in response to a developing trough/jet moving through the area. The associated warm front will lift northward into the Ohio River Valley as flow aloft becomes more zonal, with strengthening jet support and warm/moist advection leading to increased stratiform rain chances Sunday afternoon into Monday. The low and upper trough should cross the region Monday into Tuesday, bringing widespread rain and slightly cooler temperature. Drier and unseasonably warm should develop thereafter as notable ridging is expected to build in advance of the next low pressure system. && .AVIATION /20Z THURSDAY THROUGH TUESDAY/... A surface cold front is expected to cross the region west to east this afternoon and evening, with a broken line of showers and thunderstorms along and just ahead of its leading edge. Isolated gust up to 40kt may be possible with the stronger storms, otherwise expect a brief gust and slow veering of sfc wind to the W. Convection will quickly diminish after FROPA due to cold, dry advection. Additional shortwave pulses from the overhead trough should encourage MVFR/IFR cig development and even patchy sprinkles/drizzle. Timing and duration of these impacts are a little uncertain as upper flow won't be oriented out of the favorable/more typical NW. .Outlook... Periodic restrictions are expected through the weekend due to upper troughing, with weak pulses creating localized brief rain chances. More widespread restrictions and precipitation is likely late Sunday into early next week with the next low pressure system. && .PBZ WATCHES/WARNINGS/ADVISORIES... PA...None. OH...None. WV...None. &&
Hazardous weather outlook, Oct 21, 2:41 AM EDT, 15 hours 55 minutes before
Hazardous Weather Outlook National Weather Service Pittsburgh PA 241 AM EDT Thu Oct 21 2021 OHZ039>041-048>050-057>059-068-069-PAZ007>009-013>016-020>023-029- 031-073>076-WVZ001>004-012-021-509>514-220645- Tuscarawas-Carroll-Columbiana-Coshocton-Harrison-Jefferson OH- Muskingum-Guernsey-Belmont-Noble-Monroe-Mercer-Venango-Forest- Lawrence-Butler-Clarion-Jefferson PA-Beaver-Allegheny-Armstrong- Indiana-Washington-Greene-Westmoreland- Higher Elevations of Westmoreland-Fayette- Higher Elevations of Fayette-Hancock-Brooke-Ohio-Marshall-Wetzel- Marion-Monongalia- Ridges of Eastern Monongalia and Northwestern Preston-Preston- Eastern Preston-Western Tucker-Eastern Tucker- 241 AM EDT Thu Oct 21 2021 This Hazardous Weather Outlook is for east central Ohio, western Pennsylvania, and northern West Virginia. .DAY ONE...Today and tonight. Isolated strong to damaging wind gusts will be possible in the strongest storms this afternoon and evening with a crossing cold front. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. Hazardous weather is not 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
Special weather statement, Oct 21, 4:47 PM EDT, 1 hour 49 minutes before
Special Weather Statement
National Weather Service Pittsburgh PA
447 PM EDT Thu Oct 21 2021
PAZ021-023-029-031-073-075-WVZ002-212130-
Greene PA-Westmoreland PA-Washington PA-Allegheny PA-Indiana PA-
Fayette PA-Brooke WV-
447 PM EDT Thu Oct 21 2021
...A CLUSTER OF STRONG THUNDERSTORMS WILL IMPACT
WASHINGTON...SOUTHWESTERN INDIANA...ALLEGHENY...WESTERN
WESTMORELAND...NORTHWESTERN GREENE... NORTHWESTERN FAYETTE AND
BROOKE COUNTIES THROUGH 530 PM EDT...
At 447 PM EDT, Doppler radar was tracking a strong thunderstorm over
East Washington, or over Washington, moving northeast at 45 mph.
HAZARD...Wind gusts of 50 to 55 mph.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects.
Locations impacted include...
Pittsburgh, Penn Hills, Mount Lebanon, Bethel Park, Ross Township,
McCandless Township, Monroeville, McMurray, Greensburg, McKeesport,
Washington, and Franklin Park.
This includes the following highways...
Interstate 70 in Pennsylvania between mile markers 3 and 57.
Pennsylvania Turnpike between mile markers 39 and 78.
Interstate 79 in Pennsylvania between mile markers 19 and 66.
Interstate 376 in Pennsylvania between mile markers 56 and 84.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
&&
LAT...LON 4017 7956 3989 8038 4031 8056 4063 7991
4053 7950 4052 7949 4053 7948 4052 7944
TIME...MOT...LOC 2047Z 238DEG 40KT 4019 8023
MAX HAIL SIZE...0.00 IN
MAX WIND GUST...55 MPHSpecial weather statement, Oct 21, 4:56 PM EDT, 1 hour 40 minutes before
Special Weather Statement
National Weather Service Pittsburgh PA
456 PM EDT Thu Oct 21 2021
OHZ039-048-057-058-212145-
Guernsey OH-Tuscarawas OH-Coshocton OH-Muskingum OH-
456 PM EDT Thu Oct 21 2021
...A CLUSTER OF STRONG THUNDERSTORMS WILL IMPACT NORTHWESTERN
GUERNSEY... COSHOCTON...MUSKINGUM AND WESTERN TUSCARAWAS COUNTIES
THROUGH 545 PM EDT...
At 456 PM EDT, Doppler radar was tracking a strong thunderstorm near
Marne, or near Newark, moving east at 40 mph.
HAZARD...Wind gusts of 50 to 55 mph.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects.
Locations impacted include...
Zanesville, Coshocton, Newcomerstown, New Concord, West Lafayette,
Sugarcreek, South Zanesville, North Zanesville, Dresden, Frazeysburg,
Baltic, and Warsaw.
This includes Interstate 70 in Ohio near mile marker 143, and between
mile markers
145 and 176.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
&&
LAT...LON 3995 8223 3995 8220 4045 8219 4044 8167
4063 8167 4064 8158 3993 8163 3987 8217
3991 8217 3991 8223
TIME...MOT...LOC 2056Z 259DEG 35KT 4004 8236
MAX HAIL SIZE...0.00 IN
MAX WIND GUST...55 MPHSpecial weather statement, Oct 21, 5:36 PM EDT, 1 hour before
Special Weather Statement
National Weather Service Pittsburgh PA
536 PM EDT Thu Oct 21 2021
OHZ039>041-PAZ013-212215-
Tuscarawas OH-Columbiana OH-Carroll OH-Lawrence PA-
536 PM EDT Thu Oct 21 2021
...STRONG THUNDERSTORMS WILL IMPACT COLUMBIANA...NORTHERN CARROLL...
NORTHERN TUSCARAWAS AND WEST CENTRAL LAWRENCE COUNTIES THROUGH 615 PM
EDT...
At 536 PM EDT, Doppler radar was tracking strong thunderstorms along
a line extending from Louisville to near Strasburg. Movement was east
at 40 mph.
HAZARD...Wind gusts of 50 to 55 mph.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects.
Locations impacted include...
Salem, Columbiana, Carrollton, Minerva, Lisbon, Strasburg, Leetonia,
New Waterford, Augusta, Salineville, Malvern, and Bolivar.
This includes the following highways...
Ohio Turnpike near mile marker 239.
Interstate 77 in Ohio between mile markers 88 and 95.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
&&
LAT...LON 4064 8162 4067 8146 4065 8124 4072 8124
4073 8109 4090 8108 4090 8090 4093 8089
4093 8082 4090 8082 4090 8059 4096 8053
4102 8052 4102 8047 4057 8087 4058 8166
TIME...MOT...LOC 2136Z 261DEG 35KT 4085 8125 4064 8155
MAX HAIL SIZE...0.00 IN
MAX WIND GUST...55 MPHSpecial weather statement, Oct 21, 6:00 PM EDT, 36 minutes before
Special Weather Statement
National Weather Service Pittsburgh PA
600 PM EDT Thu Oct 21 2021
OHZ041-PAZ007>009-013-014-212245-
Columbiana OH-Butler PA-Forest PA-Venango PA-Lawrence PA-Mercer PA-
600 PM EDT Thu Oct 21 2021
...STRONG THUNDERSTORMS WILL IMPACT NORTHEASTERN COLUMBIANA...
MERCER...VENANGO...LAWRENCE...NORTHWESTERN BUTLER AND NORTHWESTERN
FOREST COUNTIES THROUGH 645 PM EDT...
At 600 PM EDT, Doppler radar was tracking strong thunderstorms along
a line extending from near Atlantic to near Salem. Movement was east
at 55 mph.
HAZARD...Wind gusts of 50 to 55 mph.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects.
Locations impacted include...
New Castle, Hermitage, Sharon, Salem, Oil City, Grove City, Franklin,
Columbiana, Sharpsville, Ellwood City, Greenville, and Sugarcreek.
This includes the following highways...
Pennsylvania Turnpike between mile markers 1 and 7.
Interstate 79 in Pennsylvania between mile markers 93 and 138.
Interstate 80 in Pennsylvania between mile markers 0 and 43.
Interstate 376 in Pennsylvania between mile markers 4 and 14.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
&&
LAT...LON 4085 8000 4088 8100 4090 8098 4090 8090
4093 8089 4093 8082 4090 8082 4090 8052
4149 8052 4149 8000 4162 7983 4162 7932
TIME...MOT...LOC 2200Z 267DEG 48KT 4153 8026 4095 8078
MAX HAIL SIZE...0.00 IN
MAX WIND GUST...55 MPHSpecial weather statement, Oct 21, 6:18 PM EDT, 18 minutes before
Special Weather Statement
National Weather Service Pittsburgh PA
618 PM EDT Thu Oct 21 2021
OHZ039>041-049-050-057>059-068-PAZ013-014-020-021-029-WVZ001>004-
212300-
Jefferson OH-Belmont OH-Guernsey OH-Noble OH-Tuscarawas OH-
Harrison OH-Muskingum OH-Columbiana OH-Carroll OH-Washington PA-
Allegheny PA-Butler PA-Lawrence PA-Beaver PA-Brooke WV-Marshall WV-
Ohio WV-Hancock WV-
618 PM EDT Thu Oct 21 2021
...STRONG THUNDERSTORMS WILL IMPACT GUERNSEY...CARROLL...SOUTHEASTERN
TUSCARAWAS...NORTHEASTERN NOBLE...HARRISON...JEFFERSON...
COLUMBIANA...EAST CENTRAL MUSKINGUM...BELMONT...BEAVER...SOUTHWESTERN
BUTLER...NORTHWESTERN ALLEGHENY...NORTHWESTERN WASHINGTON...SOUTHERN
LAWRENCE...OHIO...MARSHALL...BROOKE AND HANCOCK COUNTIES THROUGH 700
PM EDT...
At 618 PM EDT, Doppler radar was tracking strong thunderstorms along
a line extending from near Leetonia to Byesville. Movement was east
at 45 mph.
HAZARD...Wind gusts of 50 to 55 mph.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects.
Locations impacted include...
Wheeling, Cranberry, Moon Township, Weirton, Steubenville, Butler,
Franklin Park, Salem, East Liverpool, Cambridge, Aliquippa, and
Moundsville.
This includes the following highways...
Interstate 70 in Ohio between mile markers 170 and 225.
Interstate 70 in West Virginia between mile markers 0 and 14.
Interstate 70 in Pennsylvania between mile markers 0 and 4.
Pennsylvania Turnpike between mile markers 4 and 33.
Interstate 77 in Ohio between mile markers 36 and 60.
Interstate 79 in Pennsylvania between mile markers 68 and 95.
Interstate 376 in Pennsylvania between mile markers 31 and 58.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
&&
LAT...LON 4073 8118 4073 8109 4089 8106 4090 7984
3993 8059 3986 8183
TIME...MOT...LOC 2218Z 254DEG 41KT 4084 8079 3997 8158
MAX HAIL SIZE...0.00 IN
MAX WIND GUST...55 MPHSpecial weather statement, Oct 21, 6:36 PM EDT, 0 minutes before
Special Weather Statement
National Weather Service Pittsburgh PA
636 PM EDT Thu Oct 21 2021
OHZ059-069-PAZ031-WVZ004-012-212315-
Monroe OH-Belmont OH-Greene PA-Marshall WV-Wetzel WV-
636 PM EDT Thu Oct 21 2021
...A STRONG THUNDERSTORM WILL IMPACT EASTERN MONROE...SOUTHERN
BELMONT...SOUTHWESTERN GREENE...NORTHWESTERN WETZEL AND MARSHALL
COUNTIES THROUGH 715 PM EDT...
At 636 PM EDT, Doppler radar was tracking a strong thunderstorm near
Woodsfield, moving east at 35 mph.
HAZARD...Wind gusts of 50 to 55 mph.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects.
Locations impacted include...
New Martinsville, Woodsfield, Paden City, Powhatan Point, Pine Grove,
Sardis, Clarington, Cameron, Fly, Antioch, Grove Oak, and Woodlands.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
&&
LAT...LON 3955 8078 3956 8081 3956 8082 3958 8083
3959 8085 3960 8085 3958 8089 3961 8095
3954 8104 3957 8104 3958 8115 3976 8113
3993 8061 3984 8045 3954 8057
TIME...MOT...LOC 2236Z 257DEG 29KT 3972 8102
MAX HAIL SIZE...0.00 IN
MAX WIND GUST...55 MPHThe office that day
Everything else NWS Pittsburgh, PA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 21, 2:03 PM EDT | Severe Thunderstorm Warning | PBZ | Butler, Lawrence, Mercer, Venango | 27 min |
| Oct 21, 2:36 PM EDT | Special Weather Statement | PBZ | Mercer, Venango | 24 min |
| Oct 21, 2:50 PM EDT | Special Weather Statement | PBZ | Lawrence | 25 min |
| Oct 21, 3:18 PM EDT | Special Weather Statement | PBZ | Butler, Lawrence | 27 min |
| Oct 21, 3:49 PM EDT | Special Weather Statement | PBZ | Clarion, Forest, Venango | 41 min |
| Oct 21, 4:08 PM EDT | Special Weather Statement | PBZ | Washington | 37 min |
| Oct 21, 4:32 PM EDT | Special Weather Statement | PBZ | Clarion, Forest, Jefferson | 43 min |
| Oct 21, 4:47 PM EDT | Special Weather Statement | PBZ | Allegheny, Washington | 43 min |
| Oct 21, 5:48 PM EDT | Severe Thunderstorm Warning | PBZ | Armstrong, Indiana, Jefferson | 27 min |
| Oct 21, 6:00 PM EDT | Special Weather Statement | PBZ | Lawrence, Mercer, Venango | 45 min |
| Oct 21, 6:18 PM EDT | Special Weather Statement | PBZ | Beaver | 42 min |
| Oct 21, 6:42 PM EDT | Tornado Warning | PBZ | Mercer | 18 min |
| Oct 21, 6:56 PM EDT | Tornado Warning | PBZ | Beaver, Butler, Lawrence | 19 min |
| Oct 21, 6:57 PM EDT | Tornado Warning | PBZ | Washington | 33 min |
| Oct 21, 7:13 PM EDT | Tornado Warning | PBZ | Greene, Washington | 32 min |
| Oct 21, 7:19 PM EDT | Special Weather Statement | PBZ | Allegheny, Beaver, Butler | 41 min |
| Oct 21, 7:24 PM EDT | Tornado Warning | PBZ | Butler | 36 min |
| Oct 21, 7:26 PM EDT | Tornado Warning | PBZ | Washington | 34 min |
| Oct 21, 7:40 PM EDT | Tornado Warning | PBZ | Allegheny, Beaver, Westmoreland | 20 min |
| Oct 21, 1:28 PM EDT | Special Weather Statement | PBZ | Columbiana | 32 min |
| Oct 21, 2:19 PM EDT | Special Weather Statement | PBZ | Carroll, Columbiana | 26 min |
| Oct 21, 4:56 PM EDT | Special Weather Statement | PBZ | Coshocton, Muskingum | 49 min |
| Oct 21, 5:16 PM EDT | Severe Thunderstorm Warning | PBZ | Coshocton, Tuscarawas | 44 min |
| Oct 21, 5:36 PM EDT | Special Weather Statement | PBZ | Carroll, Columbiana | 39 min |
| Oct 21, 5:38 PM EDT | Severe Thunderstorm Warning | PBZ | Coshocton, Guernsey, Muskingum, Tuscarawas | 22 min |
| Oct 21, 6:25 PM EDT | Tornado Warning | PBZ | Belmont, Guernsey, Harrison | 35 min |
Nearby
Special Weather Statements in West Virginia, 2021Special Weather Statements in Ohio, 2021Every special weather statement in 2021
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.