Alert archive / Ohio / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 72, NWS Wilmington, OH

July 29, 2021Champaign County, Clark County, Madison County, Ohio

NWS Wilmington, OH issued this severe thunderstorm warning at Jul 29, 2021, 3:57 PM EDT for Champaign County, Clark County, Madison County, Ohio. It was in force for 48 min. 1 report 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, 3:57 PM EDT (19:57 UTC)
Expired: Jul 29, 2021, 4:45 PM EDT
In force: 48 min
Issued by: NWS Wilmington, OH
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Champaign County, OH, Clark County, OH, Madison County, OH

The radar

The Cincinnati radar (KILN), 65 km from the middle of the area, began a volume at 19:57 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

Time	Report	Where	Remark
Jul 29, 4:01 PM EDT	TSTM WND DMG	3 Nw Mount Sterling, OH	MULTIPLE TREES DOWNED ON DYER RD IN MT. STERLING. GARAGE DOOR WAS ALSO BLOWN IN AND DAMAGED.

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.

Issued	Product	Office	Lasted
Jul 29, 3:13 PM EDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 12:00Z, 8.0 hours before the alert went out and 63 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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.

905 
WUUS51 KILN 291957
SVRILN
OHC021-023-097-292045-
/O.NEW.KILN.SV.W.0072.210729T1957Z-210729T2045Z/

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

The National Weather Service in Wilmington has issued a

* Severe Thunderstorm Warning for...
  Southeastern Champaign County in west central Ohio...
  Northeastern Clark County in west central Ohio...
  Madison County in central Ohio...

* Until 445 PM EDT.

* At 357 PM EDT, a severe thunderstorm was located over Choctaw Lake,
  moving southeast 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...
  London, Jefferson, West Jefferson, Mount Sterling, Choctaw Lake, 
  Brighton, Lafayette, South Vienna, Catawba, Newport, Chenoweth, 
  Lilly Chapel, Madison Lake, Plumwood, Big Plain and Wrightsville.

This includes the following Interstates...
 I-70 in Ohio between mile markers 65 and 84.
 I-71 in Ohio between mile markers 80 and 87.

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 8324 3992 8324 3992 8325 3985 8324
      3974 8325 3970 8327 3970 8333 3977 8350
      3996 8366 4008 8353
TIME...MOT...LOC 1957Z 306DEG 29KT 3999 8351 

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

Hatzos

4 follow-up statements

215 
WWUS51 KILN 291959
SVSILN

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

OHC021-023-097-292045-
/O.CON.KILN.SV.W.0072.000000T0000Z-210729T2045Z/
Champaign OH-Clark OH-Madison OH-
359 PM EDT Thu Jul 29 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 445 PM EDT
FOR SOUTHEASTERN CHAMPAIGN...NORTHEASTERN CLARK AND MADISON
COUNTIES...

At 359 PM EDT, a severe thunderstorm was located over Choctaw Lake,
moving southeast at 30 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...
London, Jefferson, West Jefferson, Mount Sterling, Choctaw Lake, 
Brighton, Lafayette, South Vienna, Newport, Chenoweth, Lilly Chapel, 
Madison Lake, Plumwood, Big Plain and Wrightsville.

This includes the following Interstates...
 I-70 in Ohio between mile markers 65 and 83.
 I-71 in Ohio between mile markers 80 and 87.

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 8324 3992 8324 3992 8325 3985 8324
      3974 8325 3970 8327 3970 8333 3977 8350
      3996 8366 4006 8354
TIME...MOT...LOC 1959Z 310DEG 25KT 3998 8350 

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

Hatzos

783 
WWUS51 KILN 292010
SVSILN

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

OHC021-292019-
/O.CAN.KILN.SV.W.0072.000000T0000Z-210729T2045Z/
Champaign OH-
410 PM EDT Thu Jul 29 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN CHAMPAIGN COUNTY
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 and west central Ohio.

LAT...LON 4001 8352 3995 8324 3992 8324 3992 8325
      3978 8324 3974 8325 3970 8327 3970 8333
      3977 8350 3993 8361 4001 8359
TIME...MOT...LOC 2009Z 317DEG 25KT 3992 8346 

$$

OHC023-097-292045-
/O.CON.KILN.SV.W.0072.000000T0000Z-210729T2045Z/
Clark OH-Madison OH-
410 PM EDT Thu Jul 29 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 445 PM EDT
FOR NORTHEASTERN CLARK AND CENTRAL MADISON COUNTIES...

At 409 PM EDT, a severe thunderstorm was located over London, moving
southeast at 30 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...
London, Jefferson, West Jefferson, Mount Sterling, Choctaw Lake, 
Brighton, Lafayette, South Vienna, Newport, Chenoweth, Lilly Chapel, 
Madison Lake, Big Plain and Wrightsville.

This includes the following Interstates...
 I-70 in Ohio between mile markers 67 and 82.
 I-71 in Ohio between mile markers 80 and 88.

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 4001 8352 3995 8324 3992 8324 3992 8325
      3978 8324 3974 8325 3970 8327 3970 8333
      3977 8350 3993 8361 4001 8359
TIME...MOT...LOC 2009Z 317DEG 25KT 3992 8346 

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

Hatzos

266 
WWUS51 KILN 292024
SVSILN

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

OHC023-292033-
/O.CAN.KILN.SV.W.0072.000000T0000Z-210729T2045Z/
Clark OH-
424 PM EDT Thu Jul 29 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN CLARK COUNTY IS
CANCELLED...
    
The severe thunderstorm which prompted the warning has moved out of 
the warned area. Therefore, the warning has been cancelled.

Additional thunderstorms in Clark County may produce small hail and 
gusty winds through 5 PM.

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

LAT...LON 3975 8325 3970 8327 3970 8333 3977 8350
      3986 8356 3993 8354 3996 8351 3992 8325
      3980 8324
TIME...MOT...LOC 2023Z 310DEG 26KT 3985 8338 

$$

OHC097-292045-
/O.CON.KILN.SV.W.0072.000000T0000Z-210729T2045Z/
Madison OH-
424 PM EDT Thu Jul 29 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 445 PM EDT
FOR SOUTHERN MADISON COUNTY...

At 423 PM EDT, a severe thunderstorm was located near London, moving
southeast at 30 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...
London, Mount Sterling, Choctaw Lake, Lafayette, Newport, Chenoweth,
Interstate 70 at State Route 56, Madison Lake, Lilly Chapel, Big
Plain and Wrightsville.

This includes the following Interstates...
 I-70 in Ohio between mile markers 71 and 76.
 I-71 in Ohio between mile markers 80 and 88.

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 3975 8325 3970 8327 3970 8333 3977 8350
      3986 8356 3993 8354 3996 8351 3992 8325
      3980 8324
TIME...MOT...LOC 2023Z 310DEG 26KT 3985 8338 

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

Hatzos

418 
WWUS51 KILN 292028
SVSILN

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

OHC097-292045-
/O.CON.KILN.SV.W.0072.000000T0000Z-210729T2045Z/
Madison OH-
428 PM EDT Thu Jul 29 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 445 PM EDT
FOR SOUTHEASTERN MADISON COUNTY...

At 428 PM EDT, a severe thunderstorm was located near London, moving
southeast at 25 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...
London, Mount Sterling, Newport, Chenoweth, Madison Lake, Lilly
Chapel, Big Plain and Wrightsville.

This includes I-71 in Ohio between mile markers 80 and 88.
 
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 3975 8325 3970 8327 3970 8333 3977 8350
      3982 8353 3992 8351 3989 8325 3980 8324
TIME...MOT...LOC 2028Z 310DEG 23KT 3984 8339 

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

Hatzos

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 29, 6:30 AM EDT	Special Weather Statement	ILN	Auglaize, Mercer	60 min
Jul 29, 7:19 AM EDT	Special Weather Statement	ILN	Darke	41 min
Jul 29, 9:51 AM EDT	Special Weather Statement	ILN	Licking	39 min
Jul 29, 2:29 PM EDT	Special Weather Statement	ILN	Franklin	31 min
Jul 29, 2:49 PM EDT	Severe Thunderstorm Warning	ILN	Delaware, Fairfield, Franklin, Licking	41 min
Jul 29, 3:13 PM EDT	Special Weather Statement	ILN	Licking	17 min
Jul 29, 3:13 PM EDT	Severe Thunderstorm Warning	ILN	Fairfield, Franklin, Pickaway	47 min
Jul 29, 3:37 PM EDT	Special Weather Statement	ILN	Delaware	23 min
Jul 29, 3:43 PM EDT	Severe Thunderstorm Warning	ILN	Delaware, Franklin, Licking, Madison, Union	24 min
Jul 29, 3:44 PM EDT	Special Weather Statement	ILN	Madison	31 min
Jul 29, 3:50 PM EDT	Severe Thunderstorm Warning	ILN	Fairfield, Franklin	40 min
Jul 29, 4:06 PM EDT	Areal Flood Advisory	ILN	Franklin	114 min
Jul 29, 4:06 PM EDT	Special Weather Statement	ILN	Licking	24 min
Jul 29, 4:07 PM EDT	Special Weather Statement	ILN	Franklin	23 min
Jul 29, 4:24 PM EDT	Severe Thunderstorm Warning	ILN	Fairfield, Hocking	37 min
Jul 29, 4:35 PM EDT	Special Weather Statement	ILN	Clark, Madison	25 min
Jul 29, 4:43 PM EDT	Severe Thunderstorm Warning	ILN	Fayette, Franklin, Madison, Pickaway	47 min
Jul 29, 4:48 PM EDT	Severe Thunderstorm Warning	ILN	Clark, Fayette, Madison	42 min
Jul 29, 5:00 PM EDT	Severe Thunderstorm Warning	ILN	Fayette, Pickaway, Ross	45 min
Jul 29, 5:01 PM EDT	Areal Flood Advisory	ILN	Clark, Franklin, Madison, Pickaway	85 min
Jul 29, 5:20 PM EDT	Tornado Warning	ILN	Pickaway, Ross	25 min
Jul 29, 5:24 PM EDT	Severe Thunderstorm Warning	ILN	Fayette, Highland, Ross	66 min
Jul 29, 5:44 PM EDT	Special Weather Statement	ILN	Greene	31 min
Jul 29, 5:58 PM EDT	Severe Thunderstorm Warning	ILN	Pike, Ross, Scioto	62 min
Jul 29, 6:13 PM EDT	Severe Thunderstorm Warning	ILN	Clinton, Fayette, Greene	47 min
Jul 29, 6:34 PM EDT	Areal Flood Advisory	ILN	Fayette, Greene, Highland, Pickaway, Pike, Ross	3 hr
Jul 29, 6:51 PM EDT	Special Weather Statement	ILN	Fayette, Greene	24 min
Jul 29, 6:55 PM EDT	Special Weather Statement	ILN	Pike, Scioto	35 min
Jul 29, 7:02 PM EDT	Special Weather Statement	ILN	Clinton	28 min
Jul 29, 7:25 PM EDT	Special Weather Statement	ILN	Pike, Scioto	35 min
Jul 29, 7:26 PM EDT	Special Weather Statement	ILN	Highland	34 min
Jul 29, 7:45 PM EDT	Areal Flood Advisory	ILN	Adams, Clinton, Fayette, Greene, Highland, Pike and 1 more	4 hr
Jul 29, 7:52 PM EDT	Special Weather Statement	ILN	Adams, Highland	38 min

Nearby

Severe Thunderstorm Warnings in Ohio, 2021 Every 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.