Alert archive / Ohio / Special Weather Statements in 2021

Special Weather Statement, NWS Wilmington, OH

August 7, 2021Madison County, Ohio

NWS Wilmington, OH issued this special weather statement at Aug 7, 2021, 4:30 PM EDT for Madison County, Ohio. It was in force for 30 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: Aug 7, 2021, 4:30 PM EDT (20:30 UTC)
Expired: Aug 7, 2021, 5:00 PM EDT
In force: 30 min
Issued by: NWS Wilmington, OH
Hail: 0.00 in
Wind: 40

County Madison County, OH

The radar

The Cincinnati radar (KILN), 81 km from the middle of the area, began a volume at 20:32 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
Aug 7, 4:42 PM EDT	TSTM WND DMG	Plain City, OH	A FEW TREES DOWNED IN PLAIN CITY. 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, 8.5 hours before the alert went out and 79 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: 815 J/kg
Mixed-layer CIN: -30 J/kg
Mixed-layer LCL: 973 m above ground
0-6 km bulk shear: 19 kt
0-1 km storm-relative helicity: 13 m²/s²
0-3 km storm-relative helicity: 26 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.3

Open this sounding in Storm Lab

The text

As transmitted.

357 
WWUS81 KILN 072030
SPSILN

Special Weather Statement
National Weather Service Wilmington OH
430 PM EDT Sat Aug 7 2021
 
OHZ045-052>055-072100-
Champaign OH-Madison OH-Franklin OH-Union OH-Clark OH-
430 PM EDT Sat Aug 7 2021

...A STRONG THUNDERSTORM WILL IMPACT PORTIONS OF SOUTHEASTERN
CHAMPAIGN COUNTY IN WEST CENTRAL OHIO, WEST CENTRAL FRANKLIN COUNTY
IN CENTRAL OHIO, NORTHEASTERN CLARK COUNTY IN WEST CENTRAL OHIO,
NORTHEASTERN MADISON AND SOUTHWESTERN UNION COUNTIES IN CENTRAL OHIO
THROUGH 500 PM EDT...

At 429 PM EDT, a strong thunderstorm was reported near Mechanicsburg,
moving southeast at 20 mph.

HAZARD...Winds in excess of 40 mph.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around 
         unsecured objects.

Locations impacted include...
Dublin, London, Plain City, West Jefferson, Mechanicsburg, North
Lewisburg, Choctaw Lake, Milford Center, Lafayette, Woodstock,
Unionville Center, Mutual, Interstate 70 at US Route 42, Amity, State
Route 29 at State Route 38, Rosedale, State Route 4 at State Route
161, Resaca, Interstate 70 at State Route 56 and Chuckery.

This includes I-70 in Ohio between mile markers 73 and 83.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a sturdy building. 

To report hazardous weather conditions, go to our website at
weather.gov/iln and submit your report via social media, when you can
do so safely.

&&

LAT...LON 4007 8317 3988 8341 4009 8372 4026 8352
TIME...MOT...LOC 2029Z 312DEG 17KT 4015 8352 

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...40 MPH

$$

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The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 7, 2:12 PM EDT	Special Weather Statement	ILN	Auglaize	33 min
Aug 7, 2:22 PM EDT	Special Weather Statement	ILN	Shelby	23 min
Aug 7, 3:18 PM EDT	Special Weather Statement	ILN	Delaware	27 min
Aug 7, 3:33 PM EDT	Special Weather Statement	ILN	Union	27 min
Aug 7, 3:48 PM EDT	Special Weather Statement	ILN	Union	27 min
Aug 7, 4:15 PM EDT	Special Weather Statement	ILN	Delaware	30 min
Aug 7, 4:41 PM EDT	Special Weather Statement	ILN	Miami	34 min
Aug 7, 4:45 PM EDT	Special Weather Statement	ILN	Franklin	30 min
Aug 7, 4:47 PM EDT	Areal Flood Advisory	ILN	Union	3 hr
Aug 7, 5:02 PM EDT	Special Weather Statement	ILN	Darke	28 min
Aug 7, 5:04 PM EDT	Areal Flood Advisory	ILN	Delaware, Franklin, Licking	3 hr
Aug 7, 5:11 PM EDT	Special Weather Statement	ILN	Franklin	34 min
Aug 7, 5:43 PM EDT	Special Weather Statement	ILN	Greene	32 min
Aug 7, 5:51 PM EDT	Severe Thunderstorm Warning	ILN	Darke	39 min
Aug 7, 6:09 PM EDT	Areal Flood Advisory	ILN	Montgomery	3 hr
Aug 7, 6:20 PM EDT	Severe Thunderstorm Warning	ILN	Wayne	55 min
Aug 7, 6:48 PM EDT	Areal Flood Advisory	ILN	Wayne	3 hr
Aug 7, 7:14 PM EDT	Special Weather Statement	ILN	Fayette	31 min
Aug 7, 7:34 PM EDT	Severe Thunderstorm Warning	ILN	Fayette, Wayne	41 min

Nearby

Special Weather Statements in Ohio, 2021 Every special weather statement 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.