Alert archive / Ohio / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 79, NWS Northern Indiana

July 18, 2012Allen County, Putnam County, Ohio

NWS Northern Indiana issued this severe thunderstorm warning at Jul 18, 2012, 2:03 PM EDT for Allen County, Putnam County, Ohio. It was in force for 36 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 18, 2012, 2:03 PM EDT (18:03 UTC)
Expired: Jul 18, 2012, 2:39 PM EDT
In force: 36 min
Issued by: NWS Northern Indiana
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Allen County, OH, Putnam County, OH

The radar

The Northern Indiana radar (KIWX), 149 km from the middle of the area, began a volume at 18:04 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 18, 2:27 PM EDT	HAIL 0.75	Bluffton, OH	ALSO ESTIMATED 45 TO 50 MPH WINDS.
Jul 18, 2:39 PM EDT	HAIL 0.75	Columbus Grove, OH	MEASURED WINDS UP TO 45 MPH.

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 18, 1:16 PM EDT	Severe Thunderstorm Watch	SPC	8 hr

The nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 12:00Z, 6.1 hours before the alert went out and 170 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: 2497 J/kg
Mixed-layer CIN: -63 J/kg
Mixed-layer LCL: 1093 m above ground
0-6 km bulk shear: 4 kt
0-1 km storm-relative helicity: -23 m²/s²
0-3 km storm-relative helicity: -5 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

422 
WUUS53 KIWX 181803
SVRIWX
OHC003-137-181900-
/O.NEW.KIWX.SV.W.0079.120718T1803Z-120718T1900Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NORTHERN INDIANA
203 PM EDT WED JUL 18 2012

THE NATIONAL WEATHER SERVICE IN NORTHERN INDIANA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHEASTERN ALLEN COUNTY IN WEST CENTRAL OHIO...
  CENTRAL PUTNAM COUNTY IN WEST CENTRAL OHIO...

* UNTIL 300 PM EDT

* AT 200 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
  DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS SEVERE STORM WAS LOCATED
  4 MILES NORTH OF KALIDA...OR 9 MILES WEST OF OTTAWA...AND MOVING   
  SOUTH EAST AT 15 MPH.

* LOCATIONS IN THE PATH OF THE SEVERE THUNDERSTORM INCLUDE...
  KALIDA...
  GLANDORF...
  OTTAWA...
  COLUMBUS GROVE AND LEIPSIC...
  PANDORA AND BLUFFTON...

OTHER LOCATIONS IMPACTED BY THIS SEVERE THUNDERSTORM INCLUDE MILLER
CITY...GILBOA AND ROCKPORT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF
YOUR HOME OR BUSINESS. THIS SEVERE THUNDERSTORM HAS THE POTENTIAL TO
CAUSE SERIOUS INJURY AND SIGNIFICANT DAMAGE TO PROPERTY.

TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT
AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
IN NORTHERN INDIANA.

&&

LAT...LON 4080 8389 4099 8432 4112 8424 4109 8386
      4089 8387
TIME...MOT...LOC 1803Z 286DEG 12KT 4104 8420
WIND...HAIL 60MPH 1.00IN

$$

2 follow-up statements

222 
WWUS53 KIWX 181822
SVSIWX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTHERN INDIANA
222 PM EDT WED JUL 18 2012

OHC003-137-181900-
/O.CON.KIWX.SV.W.0079.000000T0000Z-120718T1900Z/
PUTNAM OH-ALLEN OH-
222 PM EDT WED JUL 18 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 300 PM EDT
FOR NORTHEASTERN ALLEN AND CENTRAL PUTNAM COUNTIES...

AT 217 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS SEVERE STORM WAS
LOCATED NEAR COLUMBUS GROVE...OR ABOUT 4 MILES SOUTH OF OTTAWA...AND
MOVING SOUTHEAST AT 20 MPH.

LOCATIONS IMPACTED INCLUDE...
  BLUFFTON...PANDORA...GILBOA AND ROCKPORT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS SEVERE THUNDERSTORM HAS THE POTENTIAL TO CAUSE SERIOUS INJURY
AND SIGNIFICANT DAMAGE TO PROPERTY. FOR YOUR PROTECTION MOVE TO AN
INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS.

TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT
AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
IN NORTHERN INDIANA.

&&

LAT...LON 4080 8389 4090 8411 4100 8425 4112 8424
      4109 8386 4089 8387
TIME...MOT...LOC 1822Z 300DEG 18KT 4095 8402
WIND...HAIL 60MPH 1.00IN

$$

795 
WWUS53 KIWX 181839
SVSIWX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTHERN INDIANA
239 PM EDT WED JUL 18 2012

OHC003-137-181850-
/O.CAN.KIWX.SV.W.0079.000000T0000Z-120718T1900Z/
PUTNAM OH-ALLEN OH-
239 PM EDT WED JUL 18 2012

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN ALLEN AND CENTRAL
PUTNAM COUNTIES IS CANCELLED...

AT 238 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THAT
THE SEVERE THUNDERSTORM WHICH PROMPTED THE WARNING HAD WEAKENED AND
NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR PROPERTY. THEREFORE...
THE SEVERE THUNDERSTORM WARNING HAS BEEN CANCELLED.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT
AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
IN NORTHERN INDIANA.

&&

LAT...LON 4080 8389 4090 8411 4100 8425 4112 8424
      4109 8386 4089 8387
TIME...MOT...LOC 1840Z 300DEG 18KT 4090 8392

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 17, 9:25 PM EDT	Special Weather Statement	IWX	Defiance	65 min
Jul 17, 10:08 PM EDT	Special Weather Statement	IWX	Henry	67 min
Jul 18, 3:55 AM EDT	Heat Advisory	IWX	Allen, Paulding, Putnam, Van Wert	13 hr
Jul 18, 12:28 PM EDT	Special Weather Statement	IWX	Van Wert	17 min
Jul 18, 12:44 PM EDT	Special Weather Statement	IWX	Van Wert	31 min
Jul 18, 1:09 PM EDT	Special Weather Statement	IWX	Paulding	36 min
Jul 18, 1:22 PM EDT	Severe Thunderstorm Warning	IWX	Paulding, Van Wert	38 min
Jul 18, 2:41 PM EDT	Special Weather Statement	IWX	Allen	34 min

Nearby

Severe Thunderstorm Warnings in Ohio, 2012 Every severe thunderstorm warning in 2012

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.