Alert archive / Ohio / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 70, NWS Wilmington, OH

July 29, 20215 counties in Ohio

NWS Wilmington, OH issued this severe thunderstorm warning at Jul 29, 2021, 3:43 PM EDT for 5 counties in Ohio. It was in force for 24 min. 2 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, 3:43 PM EDT (19:43 UTC)
Expired
Jul 29, 2021, 4:07 PM EDT
In force
24 min
Issued by
NWS Wilmington, OH
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Delaware County, OH, Franklin County, OH, Licking County, OH, Madison County, OH, Union County, OH

The radar

The Cincinnati radar (KILN), 110 km from the middle of the area, began a volume at 19:43 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, 3:44 PM EDTTSTM WND DMG6 Ne Powell, OHNUMEROUS TREES DOWNED NEAR THE INTERSECTION OF S OLD STATE ROAD AND HOLLENBACK ROAD. TIME ESTIMATED FROM RADAR.
Jul 29, 3:49 PM EDTTSTM WND DMG2 Nw Dublin, OHLARGE TREE LIMB DOWN

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

Cncnati-Daytn, OH (KILN), launched 12:00Z, 7.7 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.

Skew-T log-pSkew-T log-p diagram, Cncnati-Daytn, OH at 12:00Z on 2021-07-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1163 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, Cncnati-Daytn, OH at 12:00Z on 2021-07-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 108 square meters per square second.193958Sfc1 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
1163 J/kg
Mixed-layer CIN
-29 J/kg
Mixed-layer LCL
775 m above ground
0-6 km bulk shear
24 kt
0-1 km storm-relative helicity
108 m²/s²
0-3 km storm-relative helicity
109 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.2

Open this sounding in Storm Lab

The text

As transmitted.

195 
WUUS51 KILN 291943
SVRILN
OHC041-049-089-097-159-292030-
/O.NEW.KILN.SV.W.0070.210729T1943Z-210729T2030Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Wilmington OH
343 PM EDT Thu Jul 29 2021

The National Weather Service in Wilmington has issued a

* Severe Thunderstorm Warning for...
  Northern Franklin County in central Ohio...
  Southern Delaware County in central Ohio...
  Northwestern Licking County in central Ohio...
  Northeastern Madison County in central Ohio...
  Southeastern Union County in central Ohio...

* Until 430 PM EDT.

* At 343 PM EDT, a severe thunderstorm was located over Powell,
  moving east at 45 mph.

  HAZARD...60 mph wind gusts and quarter size hail.

  SOURCE...Radar indicated.

  IMPACT...Minor hail damage to vehicles is possible. Expect wind 
           damage to trees and power lines.

* Locations impacted include...
  Columbus, Dublin, Westerville, Reynoldsburg, Delaware, Upper
  Arlington, Gahanna, Hilliard, Worthington, Pataskala, Powell,
  Johnstown, Sunbury, Plain City, Minerva Park, New California,
  Polaris, Easton, Summit Station and Whitehall.

This includes I-71 in Ohio between mile markers 111 and 132.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

To report severe weather, go to our website at weather.gov/iln and
submit your report via social media, when you can do so safely.

&&

LAT...LON 3995 8279 4008 8334 4032 8324 4027 8264
      4011 8264
TIME...MOT...LOC 1943Z 277DEG 40KT 4016 8312 

HAIL...1.00IN
WIND...60MPH
 
$$

Hatzos
2 follow-up statements
598 
WWUS51 KILN 291953
SVSILN

Severe Weather Statement
National Weather Service Wilmington OH
353 PM EDT Thu Jul 29 2021

OHC097-159-292003-
/O.CAN.KILN.SV.W.0070.000000T0000Z-210729T2030Z/
Madison OH-Union OH-
353 PM EDT Thu Jul 29 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN MADISON AND
SOUTHEASTERN UNION COUNTIES IN CENTRAL OHIO IS CANCELLED...
    
The severe thunderstorm which prompted the warning has moved out of 
the warned area. Therefore, the warning has been cancelled.

A Severe Thunderstorm Watch remains in effect until 1000 PM EDT for
central Ohio.

LAT...LON 3995 8279 4005 8321 4011 8321 4011 8317
      4018 8317 4030 8304 4027 8264 4011 8264
TIME...MOT...LOC 1953Z 286DEG 31KT 4013 8308 

$$

OHC041-049-089-292030-
/O.CON.KILN.SV.W.0070.000000T0000Z-210729T2030Z/
Franklin OH-Delaware OH-Licking OH-
353 PM EDT Thu Jul 29 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 430 PM EDT
FOR NORTHERN FRANKLIN...SOUTHERN DELAWARE AND NORTHWESTERN LICKING
COUNTIES...

At 353 PM EDT, a severe thunderstorm was located over Powell, moving
east at 35 mph.

HAZARD...60 mph wind gusts and quarter size hail.

SOURCE...Radar indicated.

IMPACT...Minor hail damage to vehicles is possible. Expect wind 
         damage to trees and power lines.

Locations impacted include...
Columbus, Dublin, Westerville, Reynoldsburg, Delaware, Upper
Arlington, Gahanna, Hilliard, Worthington, Pataskala, Powell,
Johnstown, Sunbury, Minerva Park, Polaris, Easton, Summit Station,
Whitehall, New Albany and Jersey.

This includes I-71 in Ohio between mile markers 111 and 132.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

To report severe weather, go to our website at weather.gov/iln and
submit your report via social media, when you can do so safely.

&&

LAT...LON 3995 8279 4005 8321 4011 8321 4011 8317
      4018 8317 4030 8304 4027 8264 4011 8264
TIME...MOT...LOC 1953Z 286DEG 31KT 4013 8308 

HAIL...1.00IN
WIND...60MPH
 
$$

Hatzos
196 
WWUS51 KILN 292007
SVSILN

Severe Weather Statement
National Weather Service Wilmington OH
407 PM EDT Thu Jul 29 2021

OHC041-049-089-292017-
/O.CAN.KILN.SV.W.0070.000000T0000Z-210729T2030Z/
Franklin OH-Delaware OH-Licking OH-
407 PM EDT Thu Jul 29 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN FRANKLIN...SOUTHERN
DELAWARE AND NORTHWESTERN LICKING COUNTIES IS CANCELLED...
                
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning has been cancelled.

This storm may still produce small hail and gusty winds.

A Severe Thunderstorm Watch remains in effect until 1000 PM EDT for
central Ohio.

Please report previous wind damage or hail to the National Weather
Service by going to our website at weather.gov/iln and submitting
your report via social media.

LAT...LON 3995 8279 4005 8321 4011 8321 4011 8317
      4018 8317 4030 8304 4027 8264 4011 8264
TIME...MOT...LOC 2004Z 277DEG 40KT 4011 8287 

$$

Hatzos

The office that day

Everything else NWS Wilmington, OH issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 29, 6:30 AM EDTSpecial Weather StatementILNAuglaize, Mercer60 min
Jul 29, 7:19 AM EDTSpecial Weather StatementILNDarke41 min
Jul 29, 9:51 AM EDTSpecial Weather StatementILNLicking39 min
Jul 29, 2:29 PM EDTSpecial Weather StatementILNFranklin31 min
Jul 29, 2:49 PM EDTSevere Thunderstorm WarningILNDelaware, Fairfield, Franklin, Licking41 min
Jul 29, 3:13 PM EDTSpecial Weather StatementILNLicking17 min
Jul 29, 3:13 PM EDTSevere Thunderstorm WarningILNFairfield, Franklin, Pickaway47 min
Jul 29, 3:37 PM EDTSpecial Weather StatementILNDelaware23 min
Jul 29, 3:44 PM EDTSpecial Weather StatementILNMadison31 min
Jul 29, 3:50 PM EDTSevere Thunderstorm WarningILNFairfield, Franklin40 min
Jul 29, 3:57 PM EDTSevere Thunderstorm WarningILNChampaign, Clark, Madison48 min
Jul 29, 4:06 PM EDTAreal Flood AdvisoryILNFranklin114 min
Jul 29, 4:06 PM EDTSpecial Weather StatementILNLicking24 min
Jul 29, 4:07 PM EDTSpecial Weather StatementILNFranklin23 min
Jul 29, 4:24 PM EDTSevere Thunderstorm WarningILNFairfield, Hocking37 min
Jul 29, 4:35 PM EDTSpecial Weather StatementILNClark, Madison25 min
Jul 29, 4:43 PM EDTSevere Thunderstorm WarningILNFayette, Franklin, Madison, Pickaway47 min
Jul 29, 4:48 PM EDTSevere Thunderstorm WarningILNClark, Fayette, Madison42 min
Jul 29, 5:00 PM EDTSevere Thunderstorm WarningILNFayette, Pickaway, Ross45 min
Jul 29, 5:01 PM EDTAreal Flood AdvisoryILNClark, Franklin, Madison, Pickaway85 min
Jul 29, 5:20 PM EDTTornado WarningILNPickaway, Ross25 min
Jul 29, 5:24 PM EDTSevere Thunderstorm WarningILNFayette, Highland, Ross66 min
Jul 29, 5:44 PM EDTSpecial Weather StatementILNGreene31 min
Jul 29, 5:58 PM EDTSevere Thunderstorm WarningILNPike, Ross, Scioto62 min
Jul 29, 6:13 PM EDTSevere Thunderstorm WarningILNClinton, Fayette, Greene47 min
Jul 29, 6:34 PM EDTAreal Flood AdvisoryILNFayette, Greene, Highland, Pickaway, Pike, Ross3 hr
Jul 29, 6:51 PM EDTSpecial Weather StatementILNFayette, Greene24 min
Jul 29, 6:55 PM EDTSpecial Weather StatementILNPike, Scioto35 min
Jul 29, 7:02 PM EDTSpecial Weather StatementILNClinton28 min
Jul 29, 7:25 PM EDTSpecial Weather StatementILNPike, Scioto35 min
Jul 29, 7:26 PM EDTSpecial Weather StatementILNHighland34 min
Jul 29, 7:45 PM EDTAreal Flood AdvisoryILNAdams, Clinton, Fayette, Greene, Highland, Pike and 1 more4 hr
Jul 29, 7:52 PM EDTSpecial Weather StatementILNAdams, Highland38 min

Nearby

Severe Thunderstorm Warnings in Ohio, 2021Every severe thunderstorm warning 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.