Alert archive / Ohio / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 8, NWS Wilmington, OH

April 9, 2021Greene County, Montgomery County, Ohio

NWS Wilmington, OH issued this severe thunderstorm warning at Apr 9, 2021, 4:34 PM EDT for Greene County, Montgomery County, Ohio. It was in force for 26 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: Apr 9, 2021, 4:34 PM EDT (20:34 UTC)
Expired: Apr 9, 2021, 5:00 PM EDT
In force: 26 min
Issued by: NWS Wilmington, OH
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Greene County, OH, Montgomery County, OH

The radar

The Cincinnati radar (KILN), 50 km from the middle of the area, began a volume at 20:35 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
Apr 9, 4:49 PM EDT	TSTM WND DMG	6 Ssw Englewood, OH	ONE TREE DOWNED ON N SNYDER RD. TIME OF EVENT ESTIMATED FROM RADAR.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 12:00Z, 8.6 hours before the alert went out and 50 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: 8 J/kg
Mixed-layer CIN: -96 J/kg
Mixed-layer LCL: 1644 m above ground
0-6 km bulk shear: 42 kt
0-1 km storm-relative helicity: 142 m²/s²
0-3 km storm-relative helicity: 167 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

247 
WUUS51 KILN 092034
SVRILN
OHC057-113-092100-
/O.NEW.KILN.SV.W.0008.210409T2034Z-210409T2100Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Wilmington OH
434 PM EDT Fri Apr 9 2021

The National Weather Service in Wilmington has issued a

* Severe Thunderstorm Warning for...
  Northwestern Greene County in west central Ohio...
  Montgomery County in west central Ohio...

* Until 500 PM EDT.

* At 434 PM EDT, a severe thunderstorm was located 7 miles northwest
  of Miamisburg, moving east at 50 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

  IMPACT...Expect damage to trees and power lines.

* Locations impacted include...
  Dayton, Kettering, Beavercreek, Huber Heights, Fairborn, Xenia,
  Trotwood, Miamisburg, Vandalia, Bellbrook, Moraine, Oakwood,
  Wright-Patterson Afb, West Carrollton, Riverside, Clayton,
  Germantown, New Lebanon, Farmersville and Shiloh.

This includes the following Interstates...
 I-70 in Ohio between mile markers 35 and 41.
 I-75 in Ohio between mile markers 43 and 61.

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 3988 8412 3988 8405 3985 8405 3984 8396
      3966 8389 3959 8442 3959 8448 3979 8448
TIME...MOT...LOC 2034Z 255DEG 42KT 3970 8439 

HAIL...<.75IN
WIND...60MPH
 
$$

Hickman

2 follow-up statements

405 
WWUS51 KILN 092044
SVSILN

Severe Weather Statement
National Weather Service Wilmington OH
444 PM EDT Fri Apr 9 2021

OHC057-113-092100-
/O.CON.KILN.SV.W.0008.000000T0000Z-210409T2100Z/
Greene OH-Montgomery OH-
444 PM EDT Fri Apr 9 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 500 PM EDT
FOR NORTHWESTERN GREENE AND MONTGOMERY COUNTIES...

At 444 PM EDT, a severe thunderstorm was located over Moraine, moving
east at 50 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...Expect damage to trees and power lines.

Locations impacted include...
Dayton, Kettering, Beavercreek, Huber Heights, Fairborn, Xenia,
Trotwood, Miamisburg, Vandalia, Bellbrook, Moraine, Oakwood,
Wright-Patterson Afb, West Carrollton, Riverside, Clayton,
Germantown, New Lebanon, Farmersville and Shiloh.

This includes the following Interstates...
 I-70 in Ohio between mile markers 35 and 41.
 I-75 in Ohio between mile markers 43 and 61.

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 3988 8412 3988 8405 3985 8405 3984 8396
      3966 8389 3959 8442 3959 8448 3979 8448
TIME...MOT...LOC 2044Z 255DEG 42KT 3973 8424 

HAIL...<.75IN
WIND...60MPH
 
$$

Hickman

205 
WWUS51 KILN 092059
SVSILN

Severe Weather Statement
National Weather Service Wilmington OH
459 PM EDT Fri Apr 9 2021

OHC057-113-092109-
/O.EXP.KILN.SV.W.0008.000000T0000Z-210409T2100Z/
Greene OH-Montgomery OH-
459 PM EDT Fri Apr 9 2021

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN GREENE AND
MONTGOMERY COUNTIES WILL EXPIRE AT 500 PM EDT...
                
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 will be allowed to expire.  However gusty
winds are still possible with this thunderstorm.

Please report previous wind damage or hail to the National Weather
Service by going to our website at weather.gov/iln and submitting
your report via social media.

LAT...LON 3988 8412 3988 8405 3985 8405 3984 8396
      3966 8389 3959 8442 3959 8448 3979 8448
TIME...MOT...LOC 2059Z 255DEG 42KT 3977 8402 

$$

Hickman

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 9, 3:58 PM EDT	Special Weather Statement	ILN	Preble	32 min
Apr 9, 4:07 PM EDT	Severe Thunderstorm Warning	ILN	Darke, Miami, Montgomery, Preble	23 min
Apr 9, 4:25 PM EDT	Special Weather Statement	ILN	Butler, Montgomery	35 min
Apr 9, 4:29 PM EDT	Special Weather Statement	ILN	Miami	31 min
Apr 9, 4:43 PM EDT	Special Weather Statement	ILN	Champaign, Logan, Union	32 min
Apr 9, 4:52 PM EDT	Special Weather Statement	ILN	Champaign, Clark	23 min
Apr 9, 4:59 PM EDT	Special Weather Statement	ILN	Clark	31 min
Apr 9, 5:15 PM EDT	Special Weather Statement	ILN	Champaign, Union	30 min
Apr 9, 5:24 PM EDT	Special Weather Statement	ILN	Clark, Greene, Madison	36 min
Apr 9, 5:43 PM EDT	Special Weather Statement	ILN	Delaware, Union	32 min
Apr 9, 5:52 PM EDT	Special Weather Statement	ILN	Franklin, Madison	38 min
Apr 9, 6:14 PM EDT	Special Weather Statement	ILN	Delaware, Union	31 min
Apr 9, 6:23 PM EDT	Special Weather Statement	ILN	Franklin, Licking	37 min
Apr 9, 6:50 PM EDT	Special Weather Statement	ILN	Montgomery	25 min
Apr 9, 6:59 PM EDT	Special Weather Statement	ILN	Licking	31 min
Apr 9, 7:14 PM EDT	Special Weather Statement	ILN	Miami	31 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.