Alert archive / Ohio / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 13, NWS Northern Indiana

April 30, 20124 counties in Ohio

NWS Northern Indiana issued this severe thunderstorm warning at Apr 30, 2012, 7:01 PM EDT for 4 counties in Ohio. It was in force for 40 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
Apr 30, 2012, 7:01 PM EDT (23:01 UTC)
Expired
Apr 30, 2012, 7:41 PM EDT
In force
40 min
Issued by
NWS Northern Indiana
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Henry County, OH, Paulding County, OH, Putnam County, OH, Van Wert County, OH

The radar

The Northern Indiana radar (KIWX), 132 km from the middle of the area, began a volume at 23:02 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.

IssuedProductOfficeLasted
Apr 30, 6:04 PM EDTSevere Thunderstorm WatchSPC7 hr

The nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 12:00Z, 11.0 hours before the alert went out and 180 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 2012-04-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 12 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 2012-04-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 206 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
12 J/kg
Mixed-layer CIN
-296 J/kg
Mixed-layer LCL
1163 m above ground
0-6 km bulk shear
42 kt
0-1 km storm-relative helicity
206 m²/s²
0-3 km storm-relative helicity
215 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.3

Open this sounding in Storm Lab

The text

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

987 
WUUS53 KIWX 302301
SVRIWX
OHC069-125-137-161-010015-
/O.NEW.KIWX.SV.W.0013.120430T2301Z-120501T0015Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NORTHERN INDIANA
701 PM EDT MON APR 30 2012

THE NATIONAL WEATHER SERVICE IN NORTHERN INDIANA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHEASTERN PAULDING COUNTY IN WEST CENTRAL OHIO...
  NORTHEASTERN VAN WERT COUNTY IN WEST CENTRAL OHIO...
  SOUTHERN HENRY COUNTY IN NORTHWEST OHIO...
  PUTNAM COUNTY IN WEST CENTRAL OHIO...

* UNTIL 815 PM EDT

* AT 659 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
  7 MILES WEST OF OTTOVILLE...OR 7 MILES NORTHEAST OF VAN WERT...AND
  MOVING NORTHEAST AT 30 MPH.

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

OTHER LOCATIONS IMPACTED BY THIS SEVERE THUNDERSTORM INCLUDE
WETZEL...GROVER HILL...FORT JENNINGS...ROSELMS...MANDALE...MELROSE...
CLOVERDALE...OAKWOOD...DUPONT...KIEFERVILLE...WISTERMAN AND NORTH
CREEK.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

DOPPLER RADAR HAS INDICATED SOME WEAK ROTATION WITHIN THIS SEVERE
THUNDERSTORM. SEVERE THUNDERSTORMS CAN PRODUCE TORNADOES WITH LITTLE
OR NO WARNING. IF A TORNADO IS SPOTTED...ACT QUICKLY AND MOVE TO A
PLACE OF SAFETY IN A STURDY STRUCTURE...SUCH AS A BASEMENT OR SMALL
INTERIOR ROOM.

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 4092 8389 4090 8411 4086 8414 4086 8433
      4081 8448 4094 8454 4112 8450 4116 8429
      4116 8422 4123 8422 4127 8396 4117 8387
TIME...MOT...LOC 2300Z 231DEG 27KT 4092 8447
WIND...HAIL 60MPH 1.00IN

$$
2 follow-up statements
510 
WWUS53 KIWX 302331
SVSIWX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTHERN INDIANA
731 PM EDT MON APR 30 2012

OHC125-161-302340-
/O.CAN.KIWX.SV.W.0013.000000T0000Z-120501T0015Z/
VAN WERT OH-PAULDING OH-
731 PM EDT MON APR 30 2012

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN PAULDING AND
NORTHEASTERN VAN WERT COUNTIES IS CANCELLED...

AT 726 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THAT
THE SEVERE THUNDERSTORM WHICH PROMPTED THE WARNING HAD MOVED OUT 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 4092 8389 4090 8411 4099 8414 4102 8417
      4108 8419 4114 8420 4120 8416 4127 8396
      4117 8387
TIME...MOT...LOC 2330Z 250DEG 40KT 4104 8408

$$

OHC069-137-010015-
/O.CON.KIWX.SV.W.0013.000000T0000Z-120501T0015Z/
PUTNAM OH-HENRY OH-
731 PM EDT MON APR 30 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 815 PM EDT
FOR SOUTHEASTERN HENRY AND EASTERN PUTNAM COUNTIES...

AT 726 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 3 MILES WEST OF GLANDORF...OR ABOUT 5 MILES WEST OF OTTAWA...
AND MOVING EAST AT 45 MPH.

LOCATIONS IMPACTED INCLUDE...
  OTTAWA...PANDORA...LEIPSIC...DESHLER...WEST LEIPSIC...PRENTISS...
  GALLUP...HAMLER...GILBOA AND BELMORE.

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 4092 8389 4090 8411 4099 8414 4102 8417
      4108 8419 4114 8420 4120 8416 4127 8396
      4117 8387
TIME...MOT...LOC 2330Z 250DEG 40KT 4104 8408
WIND...HAIL 60MPH 1.00IN

$$
821 
WWUS53 KIWX 302341
SVSIWX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTHERN INDIANA
741 PM EDT MON APR 30 2012

OHC069-137-302351-
/O.CAN.KIWX.SV.W.0013.000000T0000Z-120501T0015Z/
PUTNAM OH-HENRY OH-
741 PM EDT MON APR 30 2012

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN HENRY AND EASTERN
PUTNAM COUNTIES IS CANCELLED...

AT 738 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 4092 8389 4090 8411 4099 8414 4102 8417
      4108 8419 4114 8420 4120 8416 4127 8396
      4117 8387
TIME...MOT...LOC 2341Z 250DEG 40KT 4104 8391

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 30, 6:30 PM EDTSevere Thunderstorm WarningIWXPaulding, Van Wert45 min
Apr 30, 7:07 PM EDTSevere Thunderstorm WarningIWXAllen25 min

Nearby

Severe Thunderstorm Warnings in Ohio, 2012Every 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.