Alert archive / Ohio / Severe Thunderstorm Warnings in 2026

Severe Thunderstorm Warning 252, NWS Northern Indiana

August 10, 2026Putnam County, Ohio

NWS Northern Indiana issued this severe thunderstorm warning at Aug 10, 2026, 9:44 PM EDT for Putnam County, Ohio. It was in force for 18 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: Aug 10, 2026, 9:44 PM EDT (01:44 UTC)
Expired: Aug 10, 2026, 10:02 PM EDT
In force: 18 min
Issued by: NWS Northern Indiana
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

County Putnam County, OH

The radar

The Northern Indiana radar (KIWX), 139 km from the middle of the area, began a volume at 01:47 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 watch it was issued in

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

Issued	Product	Office	Lasted
Aug 10, 7:21 PM EDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 00:00Z, 1.7 hours before the alert went out and 174 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: 4475 J/kg
Mixed-layer CIN: -2 J/kg
Mixed-layer LCL: 1043 m above ground
0-6 km bulk shear: 27 kt
0-1 km storm-relative helicity: 154 m²/s²
0-3 km storm-relative helicity: 247 m²/s²
Significant tornado parameter: 4.1
Supercell composite: 24.5

Open this sounding in Storm Lab

The text

As transmitted.

959 
WUUS53 KIWX 110144
SVRIWX
OHC137-110230-
/O.NEW.KIWX.SV.W.0252.260811T0144Z-260811T0230Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Northern Indiana
944 PM EDT Mon Aug 10 2026

The National Weather Service in Northern Indiana has issued a

* Severe Thunderstorm Warning for...
  Putnam County in west central Ohio...

* Until 1030 PM EDT.

* At 944 PM EDT, a severe thunderstorm was located near Kalida, or 11
  miles west of Ottawa, moving east at 30 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

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

* Locations impacted include...
  Ottawa, Columbus Grove, Leipsic, Kalida, Pandora, Continental,
  Glandorf, Ottoville, Fort Jennings, Dupont, West Leipsic, Gilboa,
  Cloverdale, Belmore, Miller City, and Kieferville.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4092 8399 4091 8400 4090 8434 4099 8435
      4099 8434 4109 8434 4116 8388 4092 8388
TIME...MOT...LOC 0144Z 264DEG 28KT 4101 8427 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

CR

1 follow-up statement

530 
WWUS53 KIWX 110202
SVSIWX

Severe Weather Statement
National Weather Service Northern Indiana
1002 PM EDT Mon Aug 10 2026

OHC137-110212-
/O.CAN.KIWX.SV.W.0252.000000T0000Z-260811T0230Z/
Putnam OH-
1002 PM EDT Mon Aug 10 2026

...THE SEVERE THUNDERSTORM WARNING FOR PUTNAM COUNTY 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.

A Severe Thunderstorm Watch remains in effect until 200 AM EDT for
west central Ohio.

&&

LAT...LON 4092 8399 4091 8400 4090 8434 4099 8435
      4099 8434 4109 8434 4116 8388 4092 8388
TIME...MOT...LOC 0200Z 264DEG 28KT 4102 8409 

$$

CR

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 10, 8:27 PM EDT	Severe Thunderstorm Warning	IWX	Paulding, Van Wert	48 min
Aug 10, 9:10 PM EDT	Severe Thunderstorm Warning	IWX	Van Wert	35 min
Aug 10, 9:38 PM EDT	Areal Flood Advisory	IWX	Van Wert	3 hr
Aug 10, 9:41 PM EDT	Severe Thunderstorm Warning	IWX	Allen, Van Wert	49 min
Aug 10, 10:06 PM EDT	Severe Thunderstorm Warning	IWX	Defiance, Henry, Paulding, Putnam	24 min
Aug 10, 11:31 PM EDT	Severe Thunderstorm Warning	IWX	Fulton	29 min
Aug 11, 12:56 AM EDT	Flood Watch	IWX	Allen, Defiance, Fulton, Henry, Paulding, Putnam and 2 more	3 days
Aug 11, 4:24 AM EDT	Severe Thunderstorm Warning	IWX	Fulton	51 min
Aug 11, 8:28 AM EDT	Special Weather Statement	IWX	Allen, Putnam	17 min

Nearby

Severe Thunderstorm Warnings in Ohio, 2026 Every severe thunderstorm warning in 2026

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.