Alert archive / Ohio / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 54, NWS Northern Indiana

July 7, 20214 counties in Ohio

NWS Northern Indiana issued this severe thunderstorm warning at Jul 7, 2021, 4:53 PM EDT for 4 counties in Ohio. It was in force for 52 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 7, 2021, 4:53 PM EDT (20:53 UTC)
Expired: Jul 7, 2021, 5:45 PM EDT
In force: 52 min
Issued by: NWS Northern Indiana
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Defiance County, OH, Fulton County, OH, Henry County, OH, Williams County, OH

The radar

The Northern Indiana radar (KIWX), 98 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

Time	Report	Where	Remark
Jul 7, 5:07 PM EDT	TSTM WND GST 45	2 Sw Hallock, OH	MESONET STATION AS584 BRYAN.

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 7, 1:31 PM EDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Detroit, MI (KDTX), launched 12:00Z, 8.9 hours before the alert went out and 166 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: 1092 J/kg
Mixed-layer CIN: -19 J/kg
Mixed-layer LCL: 779 m above ground
0-6 km bulk shear: 26 kt
0-1 km storm-relative helicity: 54 m²/s²
0-3 km storm-relative helicity: 123 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 1.2

Open this sounding in Storm Lab

The text

As transmitted.

904 
WUUS53 KIWX 072053
SVRIWX
OHC039-051-069-171-072145-
/O.NEW.KIWX.SV.W.0054.210707T2053Z-210707T2145Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Northern Indiana
453 PM EDT Wed Jul 7 2021

The National Weather Service in Northern Indiana has issued a

* Severe Thunderstorm Warning for...
  Northern Defiance County in northwestern Ohio...
  Northwestern Henry County in northwestern Ohio...
  Southern Williams County in northwestern Ohio...
  Southwestern Fulton County in northwestern Ohio...

* Until 545 PM EDT.

* At 453 PM EDT, a severe thunderstorm was located near Bryan, moving
  east at 20 mph.

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

  SOURCE...Radar indicated.

  IMPACT...Expect damage to roofs, siding, and trees.

* Locations impacted include...
  Bryan, Archbold, Montpelier, Edgerton, West Unity, Stryker, West
  Jefferson, Pulaski, Ney, Blakeslee, Evansport, Pettisville, Zone,
  Ridgeville Corners, Williams Center, Melbern, Elmira and Hallock.

This includes Interstate 80 in Ohio between mile markers 18 and 30.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

To report severe weather, contact your nearest law enforcement
agency. They will send your report to the National Weather Service
office in Northern Indiana.

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 4139 8474 4157 8475 4164 8423 4137 8421
TIME...MOT...LOC 2053Z 266DEG 18KT 4149 8465 

HAIL...0.75IN
WIND...60MPH
 
$$

CM

2 follow-up statements

472 
WWUS53 KIWX 072124
SVSIWX

Severe Weather Statement
National Weather Service Northern Indiana
524 PM EDT Wed Jul 7 2021

OHC039-051-069-171-072145-
/O.CON.KIWX.SV.W.0054.000000T0000Z-210707T2145Z/
Defiance OH-Henry OH-Williams OH-Fulton OH-
524 PM EDT Wed Jul 7 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 545 PM EDT
FOR NORTHEASTERN DEFIANCE...NORTHWESTERN HENRY...SOUTHEASTERN
WILLIAMS AND SOUTHWESTERN FULTON COUNTIES...

At 523 PM EDT, a severe thunderstorm was located over Stryker, or
near Bryan, moving east at 30 mph.

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

SOURCE...Radar indicated.

IMPACT...Hail damage to vehicles is expected. Expect wind damage to 
         roofs, siding, and trees.

Locations impacted include...
Bryan, Archbold, Montpelier, West Unity, Stryker, West Jefferson,
Pulaski, Ney, Evansport, Pettisville, Zone, Ridgeville Corners,
Williams Center, Melbern, Elmira and Hallock.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

To report severe weather contact your nearest law enforcement agency.
They will send your report to the National Weather Service office in
Northern Indiana.

Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.

&&

LAT...LON 4139 8470 4158 8466 4164 8423 4137 8421
TIME...MOT...LOC 2123Z 266DEG 25KT 4150 8444 

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

MCD

651 
WWUS53 KIWX 072153
SVSIWX

Severe Weather Statement
National Weather Service Northern Indiana
553 PM EDT Wed Jul 7 2021

OHC039-051-069-171-072200-
/O.EXP.KIWX.SV.W.0054.000000T0000Z-210707T2145Z/
Defiance OH-Henry OH-Williams OH-Fulton OH-
553 PM EDT Wed Jul 7 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN DEFIANCE...
NORTHWESTERN HENRY...SOUTHEASTERN WILLIAMS AND SOUTHWESTERN FULTON
COUNTIES HAS EXPIRED...
                
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 allowed to expire.

A Severe Thunderstorm Watch remains in effect until 900 PM EDT for
northwestern Ohio.

LAT...LON 4139 8470 4158 8466 4164 8423 4137 8421
TIME...MOT...LOC 2150Z 266DEG 18KT 4151 8429 

$$

PBM

The office that day

Everything else NWS Northern Indiana issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 7, 1:10 PM EDT	Areal Flood Advisory	IWX	Williams	3 hr
Jul 7, 1:28 PM EDT	Special Weather Statement	IWX	Allen	47 min
Jul 7, 1:41 PM EDT	Special Weather Statement	IWX	Van Wert	34 min
Jul 7, 2:11 PM EDT	Special Weather Statement	IWX	Putnam	34 min
Jul 7, 2:15 PM EDT	Areal Flood Advisory	IWX	Allen, Putnam, Van Wert	2 hr
Jul 7, 2:33 PM EDT	Special Weather Statement	IWX	Henry	27 min
Jul 7, 2:43 PM EDT	Severe Thunderstorm Warning	IWX	Henry, Putnam	17 min
Jul 7, 4:45 PM EDT	Special Weather Statement	IWX	Williams	45 min
Jul 7, 4:57 PM EDT	Special Weather Statement	IWX	Van Wert	48 min
Jul 7, 5:34 PM EDT	Special Weather Statement	IWX	Paulding, Van Wert	41 min
Jul 7, 5:54 PM EDT	Severe Thunderstorm Warning	IWX	Defiance, Fulton, Henry, Paulding, Williams	51 min
Jul 7, 6:26 PM EDT	Areal Flood Advisory	IWX	Defiance, Fulton, Henry, Paulding, Williams	3 hr
Jul 7, 6:39 PM EDT	Severe Thunderstorm Warning	IWX	Defiance, Fulton, Henry	22 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.