Alert archive / Ohio / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 93, NWS Wilmington, OH
NWS Wilmington, OH issued this severe thunderstorm warning at Aug 11, 2021, 5:03 PM EDT for 4 counties in Ohio. It was in force for 42 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
- Aug 11, 2021, 5:03 PM EDT (21:03 UTC)
- Expired
- Aug 11, 2021, 5:45 PM EDT
- In force
- 42 min
- Issued by
- NWS Wilmington, OH
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Delaware County, OH, Franklin County, OH, Madison County, OH, Union County, OH
The radar
The Cincinnati radar (KILN), 99 km from the middle of the area, began a volume at 21:04 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 |
|---|---|---|---|
| Aug 11, 5:30 PM EDT | TSTM WND DMG | 2 Ne Westerville, OH | LARGE TREE LIMB DOWN. TIME ESTIMATED FROM RADAR DATA. |
| Aug 11, 5:31 PM EDT | TSTM WND DMG | 5 Nnw Gahanna, OH | ONE TREE DOWN NEAR HEMPSTEAD AND SCHROCK ROAD. TIME ESTIMATED FROM RADAR DATA. |
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 |
|---|---|---|---|
| Aug 11, 2:32 PM EDT | Severe Thunderstorm Watch | SPC | 4 hr |
The nearest sounding before it
Cncnati-Daytn, OH (KILN), launched 12:00Z, 9.1 hours before the alert went out and 97 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.
- Mixed-layer CAPE
- 1853 J/kg
- Mixed-layer CIN
- -70 J/kg
- Mixed-layer LCL
- 1037 m above ground
- 0-6 km bulk shear
- 10 kt
- 0-1 km storm-relative helicity
- 46 m²/s²
- 0-3 km storm-relative helicity
- 71 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
824
WUUS51 KILN 112103
SVRILN
OHC041-049-097-159-112145-
/O.NEW.KILN.SV.W.0093.210811T2103Z-210811T2145Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Wilmington OH
503 PM EDT Wed Aug 11 2021
The National Weather Service in Wilmington has issued a
* Severe Thunderstorm Warning for...
Franklin County in central Ohio...
Southeastern Delaware County in central Ohio...
Northeastern Madison County in central Ohio...
Southeastern Union County in central Ohio...
* Until 545 PM EDT.
* At 503 PM EDT, a severe thunderstorm was located over Worthington,
moving east at 35 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to trees and power lines.
* Locations impacted include...
Columbus, Dublin, Westerville, Reynoldsburg, Upper Arlington,
Gahanna, Hilliard, Worthington, Bexley, Jefferson, Pataskala,
Powell, Plain City, West Jefferson, Minerva Park, New California,
Ohio State University, Lake Darby, Polaris and Easton.
This includes the following Interstates...
I-70 in Ohio between mile markers 82 and 111.
I-71 in Ohio between mile markers 103 and 124.
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 3998 8277 3997 8278 3994 8278 3994 8281
3988 8280 3994 8331 4005 8340 4016 8331
4019 8276
TIME...MOT...LOC 2103Z 262DEG 32KT 4008 8306
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Hatzos4 follow-up statements
271
WWUS51 KILN 112112
SVSILN
Severe Weather Statement
National Weather Service Wilmington OH
512 PM EDT Wed Aug 11 2021
OHC041-049-097-159-112145-
/O.CON.KILN.SV.W.0093.000000T0000Z-210811T2145Z/
Franklin OH-Delaware OH-Madison OH-Union OH-
512 PM EDT Wed Aug 11 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 545 PM EDT
FOR FRANKLIN...SOUTHEASTERN DELAWARE...NORTHEASTERN MADISON AND
SOUTHEASTERN UNION COUNTIES IN CENTRAL OHIO...
At 512 PM EDT, a severe thunderstorm was located over Hilliard,
moving east at 35 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to trees and power lines.
Locations impacted include...
Columbus, Dublin, Westerville, Reynoldsburg, Upper Arlington,
Gahanna, Hilliard, Worthington, Bexley, Jefferson, Pataskala, Powell,
Plain City, West Jefferson, Minerva Park, New California, Ohio State
University, Lake Darby, Polaris and Easton.
This includes the following Interstates...
I-70 in Ohio between mile markers 82 and 111.
I-71 in Ohio between mile markers 103 and 124.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
To report severe weather, go to our website at weather.gov/iln and
submit your report via social media, when you can do so safely.
&&
LAT...LON 3998 8277 3997 8278 3994 8278 3994 8281
3988 8280 3994 8331 4005 8340 4012 8335
4016 8327 4019 8276
TIME...MOT...LOC 2112Z 255DEG 32KT 4006 8314
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Hatzos488
WWUS51 KILN 112121
SVSILN
Severe Weather Statement
National Weather Service Wilmington OH
521 PM EDT Wed Aug 11 2021
OHC097-159-112131-
/O.CAN.KILN.SV.W.0093.000000T0000Z-210811T2145Z/
Madison OH-Union OH-
521 PM EDT Wed Aug 11 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN MADISON AND
SOUTHEASTERN UNION COUNTIES IN CENTRAL OHIO IS CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
the warned area. Therefore, the warning has been cancelled.
A Severe Thunderstorm Watch remains in effect until 800 PM EDT for
central Ohio.
LAT...LON 3998 8277 3997 8278 3994 8278 3994 8281
3988 8280 3993 8323 3997 8325 3999 8325
4000 8326 4001 8325 4005 8326 4005 8321
4011 8321 4011 8317 4017 8317 4019 8276
TIME...MOT...LOC 2121Z 263DEG 25KT 4008 8308
$$
OHC041-049-112145-
/O.CON.KILN.SV.W.0093.000000T0000Z-210811T2145Z/
Franklin OH-Delaware OH-
521 PM EDT Wed Aug 11 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 545 PM EDT
FOR FRANKLIN AND SOUTHEASTERN DELAWARE COUNTIES...
At 521 PM EDT, a severe thunderstorm was located near Worthington,
moving east at 30 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to trees and power lines.
Locations impacted include...
Columbus, Dublin, Westerville, Reynoldsburg, Upper Arlington,
Gahanna, Hilliard, Worthington, Bexley, Pataskala, Powell, West
Jefferson, Minerva Park, Ohio State University, Lake Darby, Polaris,
Easton, Whitehall, New Albany and Grandview Heights.
This includes the following Interstates...
I-70 in Ohio between mile markers 87 and 111.
I-71 in Ohio between mile markers 103 and 124.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
To report severe weather, go to our website at weather.gov/iln and
submit your report via social media, when you can do so safely.
&&
LAT...LON 3998 8277 3997 8278 3994 8278 3994 8281
3988 8280 3993 8323 3997 8325 3999 8325
4000 8326 4001 8325 4005 8326 4005 8321
4011 8321 4011 8317 4017 8317 4019 8276
TIME...MOT...LOC 2121Z 263DEG 25KT 4008 8308
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Hatzos360
WWUS51 KILN 112128
SVSILN
Severe Weather Statement
National Weather Service Wilmington OH
528 PM EDT Wed Aug 11 2021
OHC041-049-112145-
/O.CON.KILN.SV.W.0093.000000T0000Z-210811T2145Z/
Franklin OH-Delaware OH-
528 PM EDT Wed Aug 11 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 545 PM EDT
FOR NORTHERN FRANKLIN AND SOUTHEASTERN DELAWARE COUNTIES...
At 528 PM EDT, a severe thunderstorm was located over Easton, moving
east at 45 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to trees and power lines.
Locations impacted include...
Columbus, Dublin, Westerville, Reynoldsburg, Upper Arlington,
Gahanna, Hilliard, Worthington, Bexley, Pataskala, Powell, Minerva
Park, Ohio State University, Polaris, Easton, Whitehall, New Albany,
Grandview Heights, Shawnee Hills and Valleyview.
This includes the following Interstates...
I-70 in Ohio between mile markers 95 and 111.
I-71 in Ohio between mile markers 105 and 124.
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 3998 8277 3997 8278 3994 8278 3994 8281
3988 8280 3990 8296 4001 8315 4011 8317
4017 8317 4019 8276
TIME...MOT...LOC 2128Z 268DEG 38KT 4007 8290
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
Hatzos389
WWUS51 KILN 112138
SVSILN
Severe Weather Statement
National Weather Service Wilmington OH
538 PM EDT Wed Aug 11 2021
OHC041-049-112148-
/O.EXP.KILN.SV.W.0093.000000T0000Z-210811T2145Z/
Franklin OH-Delaware OH-
538 PM EDT Wed Aug 11 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN FRANKLIN AND
SOUTHEASTERN DELAWARE COUNTIES WILL EXPIRE AT 545 PM EDT...
The storm which prompted the warning is moving out of the warned
area. Therefore, the warning will be allowed to expire.
A Severe Thunderstorm Watch remains in effect until 800 PM EDT for
central Ohio.
Please report previous wind damage or hail to the National Weather
Service by going to our website at weather.gov/iln and submitting
your report via social media.
LAT...LON 3998 8277 3997 8278 3994 8278 3994 8281
3988 8280 3990 8296 4001 8315 4011 8317
4017 8317 4019 8276
TIME...MOT...LOC 2138Z 262DEG 32KT 4008 8279
$$
HatzosThe office that day
Everything else NWS Wilmington, OH issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 11, 1:07 AM EDT | Special Weather Statement | ILN | Mercer | 38 min |
| Aug 11, 3:14 AM EDT | Special Weather Statement | ILN | Licking | 31 min |
| Aug 11, 3:44 AM EDT | Special Weather Statement | ILN | Licking | 31 min |
| Aug 11, 8:34 AM EDT | Special Weather Statement | ILN | Hardin | 41 min |
| Aug 11, 2:18 PM EDT | Severe Thunderstorm Warning | ILN | Auglaize, Mercer | 57 min |
| Aug 11, 2:55 PM EDT | Heat Advisory | ILN | Adams, Auglaize, Brown, Butler, Champaign, Clark and 26 more | 29 hr |
| Aug 11, 3:03 PM EDT | Special Weather Statement | ILN | Darke | 27 min |
| Aug 11, 3:10 PM EDT | Severe Thunderstorm Warning | ILN | Auglaize, Darke, Logan, Mercer, Shelby | 65 min |
| Aug 11, 3:19 PM EDT | Severe Thunderstorm Warning | ILN | Hardin, Logan | 56 min |
| Aug 11, 3:47 PM EDT | Severe Thunderstorm Warning | ILN | Darke, Miami, Shelby | 41 min |
| Aug 11, 3:52 PM EDT | Special Weather Statement | ILN | Champaign, Logan | 23 min |
| Aug 11, 4:11 PM EDT | Special Weather Statement | ILN | Hardin | 19 min |
| Aug 11, 4:16 PM EDT | Special Weather Statement | ILN | Union | 29 min |
| Aug 11, 4:24 PM EDT | Severe Thunderstorm Warning | ILN | Delaware, Logan, Union | 37 min |
| Aug 11, 4:30 PM EDT | Special Weather Statement | ILN | Champaign | 30 min |
| Aug 11, 4:47 PM EDT | Special Weather Statement | ILN | Franklin, Madison | 28 min |
| Aug 11, 4:58 PM EDT | Special Weather Statement | ILN | Licking | 32 min |
| Aug 11, 5:30 PM EDT | Severe Thunderstorm Warning | ILN | Licking | 41 min |
| Aug 11, 5:37 PM EDT | Special Weather Statement | ILN | Fairfield | 23 min |
| Aug 11, 5:58 PM EDT | Special Weather Statement | ILN | Fairfield | 32 min |
Nearby
Severe Thunderstorm Warnings in Ohio, 2021Every 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.