Alert archive / Ohio / Tornado Warnings in 2021

Tornado Warning 10, NWS Pittsburgh, PA

July 29, 2021Belmont County, Harrison County, Jefferson County, Ohio; Brooke County, West Virginia

NWS Pittsburgh, PA issued this tornado warning at Jul 29, 2021, 4:53 PM EDT for Belmont County, Harrison County, Jefferson County, Ohio; Brooke County, West Virginia. It was in force for 22 min. 4 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
Jul 29, 2021, 4:53 PM EDT (20:53 UTC)
Expired
Jul 29, 2021, 5:15 PM EDT
In force
22 min
Issued by
NWS Pittsburgh, PA
Area
Storm-based polygon
Tornado
Radar indicated
Hail
0.75 in

Counties Belmont County, OH, Harrison County, OH, Jefferson County, OH, Brooke County, WV

The radar

The Pittsburgh radar (KPBZ), 71 km from the middle of the area, began a volume at 20:55 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

TimeReportWhereRemark
Jul 29, 4:55 PM EDTTSTM WND DMGHarrisville, OHA FEW TREES DOWN.
Jul 29, 4:55 PM EDTTORNADONew Athens, OHTORNADO SPOTTED HEADING FROM NEW ATHENS TOWARD HARRISVILLE. REPORT OF A HOUSE OUT IN THE ROAD IN NEW ATHENS.
Jul 29, 4:55 PM EDTTORNADONew Athens, OHNWS SURVEY TEAM OBSERVED EF2 TORNADO DAMAGE IN THE TOWN OF NEW ATHENS, OH, WHERE DAMAGE TO RESIDENTIAL STRUCTURES WAS OBSERVED. HARDWOOD TREES WERE SNAPPED OR UPROOTED. TIME BASED ON RADAR.
Jul 29, 4:57 PM EDTTORNADONew Athens, OHNWS SURVEY TEAM DETECTED EF1 TORNADO DAMAGE EAST OF NEW ATHENS, OH WHERE ELECTRICAL TRANSMISSION LINES WERE SNAPPED, HARDWOOD TREES UPROOTED AND SNAPPED, AND STRUCTURAL DAMAGE TO FARM OUTBUILDINGS OCCURRED. TIME BASED ON RADAR.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Jul 29, 3:13 PM EDTSevere Thunderstorm WatchSPC7 hr

The nearest sounding before it

Pittsburgh, PA (KPIT), launched 12:00Z, 8.9 hours before the alert went out and 75 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 2021-07-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 136 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Pittsburgh, PA at 12:00Z on 2021-07-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 175 square meters per square second.19395878Sfc1 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
136 J/kg
Mixed-layer CIN
-76 J/kg
Mixed-layer LCL
1222 m above ground
0-6 km bulk shear
43 kt
0-1 km storm-relative helicity
175 m²/s²
0-3 km storm-relative helicity
213 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.3

Open this sounding in Storm Lab

The text

As transmitted.

981 
WFUS51 KPBZ 292053
TORPBZ
OHC013-067-081-WVC009-292115-
/O.NEW.KPBZ.TO.W.0010.210729T2053Z-210729T2115Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Pittsburgh PA
453 PM EDT Thu Jul 29 2021

The National Weather Service in Pittsburgh has issued a

* Tornado Warning for...
  Southeastern Harrison County in east central Ohio...
  Southwestern Jefferson County in east central Ohio...
  Northeastern Belmont County in east central Ohio...
  Brooke County in northern West Virginia...

* Until 515 PM EDT.
    
* At 453 PM EDT, a severe thunderstorm capable of producing a tornado
  was located near Cadiz, moving southeast at 15 mph.

  HAZARD...Tornado.

  SOURCE...Radar indicated rotation.

  IMPACT...Flying debris will be dangerous to those caught without 
           shelter. Mobile homes will be damaged or destroyed. 
           Damage to roofs, windows, and vehicles will occur.  Tree 
           damage is likely.

* This dangerous storm will be near...
  St. Clairsville around 515 PM EDT.

Other locations impacted by this tornadic thunderstorm include New
Athens, Rayland, Neffs, Mount Pleasant, Adena, Dillonvale,
Harrisville and Yorkville.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

Please report severe weather by calling 412-262-1988, posting to 
the NWS Pittsburgh Facebook page, or using Twitter @NWSPITTSBURGH. 
 
&&

LAT...LON 4022 8106 4028 8101 4022 8066 3999 8085
TIME...MOT...LOC 2053Z 301DEG 15KT 4022 8099 

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$
1 follow-up statement
646 
WWUS51 KPBZ 292105
SVSPBZ

Severe Weather Statement
National Weather Service Pittsburgh PA
505 PM EDT Thu Jul 29 2021

OHC013-067-081-WVC009-292115-
/O.CON.KPBZ.TO.W.0010.000000T0000Z-210729T2115Z/
Harrison OH-Jefferson OH-Belmont OH-Brooke WV-
505 PM EDT Thu Jul 29 2021

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 515 PM EDT FOR
SOUTHEASTERN HARRISON...SOUTHWESTERN JEFFERSON...NORTHEASTERN BELMONT
AND BROOKE COUNTIES...
    
At 505 PM EDT, a severe thunderstorm capable of producing a tornado
was located near Cadiz, moving southeast at 15 mph.

HAZARD...Tornado and half dollar-size hail.

SOURCE...Radar indicated rotation.

IMPACT...Flying debris will be dangerous to those caught without 
         shelter. Mobile homes will be damaged or destroyed. Damage 
         to roofs, windows, and vehicles will occur.  Tree damage is 
         likely.

This dangerous storm will be near...
  St. Clairsville around 520 PM EDT.
  Tiltonsville around 530 PM EDT.

Other locations impacted by this tornadic thunderstorm include
Rayland, Neffs, Mount Pleasant, Adena, Dillonvale, Harrisville, New
Athens and Yorkville.

This includes Interstate 70 in Ohio between mile markers 216 and 222.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.

Please report severe weather by calling 412-262-1988, posting to 
the NWS Pittsburgh Facebook page, or using Twitter @NWSPITTSBURGH. 

&&

LAT...LON 4016 8101 4026 8093 4022 8066 3999 8085
TIME...MOT...LOC 2105Z 301DEG 15KT 4019 8093 

TORNADO...RADAR INDICATED
HAIL...1.25IN

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 29, 3:18 PM EDTSpecial Weather StatementPBZMuskingum27 min
Jul 29, 3:31 PM EDTSevere Thunderstorm WarningPBZCoshocton, Guernsey, Muskingum44 min
Jul 29, 4:05 PM EDTSpecial Weather StatementPBZColumbiana25 min
Jul 29, 4:12 PM EDTSevere Thunderstorm WarningPBZGuernsey, Monroe, Muskingum, Noble48 min
Jul 29, 4:15 PM EDTSpecial Weather StatementPBZGuernsey45 min
Jul 29, 4:20 PM EDTSpecial Weather StatementPBZHarrison25 min
Jul 29, 4:30 PM EDTSevere Thunderstorm WarningPBZCarroll, Columbiana, Jefferson45 min
Jul 29, 4:48 PM EDTSevere Thunderstorm WarningPBZBelmont, Harrison, Jefferson14 min
Jul 29, 4:54 PM EDTSevere Thunderstorm WarningPBZMonroe, Noble36 min
Jul 29, 5:02 PM EDTTornado WarningPBZCarroll, Columbiana, Jefferson13 min
Jul 29, 5:14 PM EDTTornado WarningPBZCarroll, Columbiana, Jefferson16 min
Jul 29, 5:24 PM EDTSevere Thunderstorm WarningPBZBelmont, Jefferson36 min
Jul 29, 5:28 PM EDTSevere Thunderstorm WarningPBZHarrison, Jefferson47 min
Jul 29, 5:37 PM EDTSevere Thunderstorm WarningPBZBelmont, Monroe, Noble38 min
Jul 29, 5:39 PM EDTTornado WarningPBZJefferson21 min
Jul 29, 5:59 PM EDTTornado Warning Tornado observedPBZJefferson31 min
Jul 29, 6:12 PM EDTSevere Thunderstorm WarningPBZHarrison, Jefferson48 min
Jul 29, 6:36 PM EDTSevere Thunderstorm WarningPBZBelmont, Harrison, Jefferson24 min
Jul 29, 5:48 PM EDTTornado WarningPBZMarshall, Ohio27 min
Jul 29, 6:08 PM EDTSevere Thunderstorm WarningPBZPreston52 min
Jul 29, 6:32 PM EDTSevere Thunderstorm WarningPBZMarion, Monongalia28 min
Jul 29, 7:00 PM EDTSevere Thunderstorm WarningPBZBrooke, Ohio45 min

Nearby

Tornado Warnings in Ohio, 2021Tornado Warnings in West Virginia, 2021Every tornado warning in 2021Tornadoes 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.