Alert archive / Ohio / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 57, NWS Wilmington, OH

May 21, 2018Fayette County, Highland County, Ross County, Ohio

NWS Wilmington, OH issued this severe thunderstorm warning at May 21, 2018, 10:29 PM EDT for Fayette County, Highland County, Ross County, Ohio. It was in force for 23 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: May 21, 2018, 10:29 PM EDT (02:29 UTC)
Expired: May 21, 2018, 10:52 PM EDT
In force: 23 min
Issued by: NWS Wilmington, OH
Area: Storm-based polygon
Tornado: Possible
Hail: 1.0 in
Wind: 60.0 mph

Counties Fayette County, OH, Highland County, OH, Ross County, OH

The radar

The Cincinnati radar (KILN), 39 km from the middle of the area, began a volume at 02:28 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 nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 00:00Z, 2.5 hours before the alert went out and 38 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: 208 J/kg
Mixed-layer CIN: -13 J/kg
Mixed-layer LCL: 1822 m above ground
0-6 km bulk shear: 18 kt
0-1 km storm-relative helicity: 19 m²/s²
0-3 km storm-relative helicity: 70 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Wilmington, OH wrote its last area forecast discussion before this severe thunderstorm warning went out at May 21, 10:21 PM EDT, 8 minutes earlier.

Area forecast discussion, May 21, 10:21 PM EDT, 8 minutes before

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Hazardous weather outlook, May 21, 4:08 PM EDT, 6 hours 21 minutes before

Hazardous Weather Outlook
National Weather Service Wilmington OH
408 PM EDT Mon May 21 2018

OHZ026-034-035-042>045-220915-
Hardin-Mercer-Auglaize-Darke-Shelby-Logan-Union OH-
408 PM EDT Mon May 21 2018

This Hazardous Weather Outlook is for Central Ohio and West Central
Ohio.

.DAY ONE...Tonight.

Thunderstorms will move across the area late this afternoon and
evening. Some of these storms may be severe with damaging wind gusts
being the highest threat. An isolated tornado or large hail cannot be
ruled out.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be required this afternoon and evening.

INZ050-058-059-066-073>075-080-KYZ089>100-OHZ046-051>056-060>065-
070>074-077>082-088-220915-
Wayne-Fayette IN-Union IN-Franklin IN-Ripley-Dearborn-Ohio-
Switzerland-Carroll-Gallatin-Boone-Kenton-Campbell-Owen-Grant-
Pendleton-Bracken-Robertson-Mason-Lewis-Delaware-Miami-Champaign-
Clark-Madison-Franklin OH-Licking-Preble-Montgomery-Greene-
Fayette OH-Pickaway-Fairfield-Butler-Warren-Clinton-Ross-Hocking-
Hamilton-Clermont-Brown-Highland-Adams-Pike-Scioto-
408 PM EDT Mon May 21 2018

This Hazardous Weather Outlook is for East Central Indiana,
Southeast Indiana, Northeast Kentucky, Northern Kentucky, Central
Ohio, South Central Ohio, Southwest Ohio and West Central Ohio.

.DAY ONE...Tonight.

Showers and thunderstorms will move across the area late this
afternoon into the evening. A few of these storms could produce
strong to damaging wind gusts.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

Additional showers and thunderstorms will occur Tuesday into Tuesday
evening. Some storms could produce strong to damaging wind gusts.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not anticipated.

In the hours before

Special weather statement, May 21, 9:44 PM EDT, 45 minutes before

Special Weather Statement
National Weather Service Wilmington OH
944 PM EDT MON MAY 21 2018

OHZ054-063-072-079-080-220230-
Highland OH-Brown OH-Fayette OH-Madison OH-Clinton OH-
944 PM EDT MON MAY 21 2018

...A RAPIDLY DEVELOPING THUNDERSTORM WILL AFFECT NORTHERN BROWN...
FAYETTE...CLINTON...NORTHWESTERN HIGHLAND AND SOUTHEASTERN MADISON
COUNTIES UNTIL 1030 PM EDT...

At 944 PM EDT, radar indicated a thunderstorm near Lynchburg, moving
northeast at 25 mph.

STORM HAZARDS INCLUDE...
Winds to 50 mph...
Nickel size hail...

Locations impacted include...
Washington Court House, Wilmington, Blanchester, Sabina, Lynchburg,
New Vienna, Jeffersonville, Bloomingburg, Staunton, Martinsville,
Midland, Highland, St. Martin, Milledgeville, Octa, Melvin,
Chenoweth, Interstate 71 at State Route 38, Lees Creek and Madison
Mills.

This includes I-71 in Ohio between mile markers 63 and 75, near mile
marker 77, and between mile markers 81 and 83.

Residents in these areas should remain alert. If this storm becomes
stronger, then a warning may be needed.

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 3945 8341 3919 8386 3929 8398 3955 8370
      3955 8367 3958 8367 3964 8360 3977 8327
TIME...MOT...LOC 0144Z 241DEG 22KT 3929 8385

Novak

Local storm report, May 21, 9:46 PM EDT, 43 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE WILMINGTON OH
946 PM EDT MON MAY 21 2018

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0945 PM     FLOOD            DELAWARE                40.30N 83.07W
05/21/2018                   DELAWARE           OH   911 CALL CENTER

            HIGH WATER ON SOME CITY STREETS IN DELAWARE.

&&

MBP

Special weather statement, May 21, 9:48 PM EDT, 41 minutes before

Special Weather Statement
National Weather Service Wilmington OH
948 PM EDT MON MAY 21 2018

KYZ097-OHZ071-072-077>081-220215-
Bracken KY-Hamilton OH-Clermont OH-Highland OH-Adams OH-Brown OH-
Warren OH-Clinton OH-
948 PM EDT MON MAY 21 2018

...A LINE OF RAPIDLY DEVELOPING THUNDERSTORMS WILL AFFECT
NORTHEASTERN BRACKEN...NORTHEASTERN HAMILTON...CLERMONT...BROWN...
SOUTHERN WARREN...WEST CENTRAL ADAMS...SOUTHWESTERN CLINTON AND
SOUTHWESTERN HIGHLAND COUNTIES UNTIL 1015 PM EDT...

At 948 PM EDT, radar indicated thunderstorms along a line extending
from Blue Ash to near Felicity, moving northeast at 35 mph.

STORM HAZARDS INCLUDE...
Winds to 50 mph...
Nickel size hail...
Frequent cloud-to-ground lightning...
Very heavy rain...

Locations impacted include...
Cincinnati, Mason, Sharonville, Blue Ash, Loveland, Reading,
Montgomery, Madeira, Milford, Deer Park, Georgetown, Blanchester,
Forestville, Amelia, Mount Orab, Mariemont, Bethel, Williamsburg,
Terrace Park and Batavia.

This includes the following Interstates...
 I-71 in Ohio between mile markers 10 and 25, between mile markers 29
and 31, and between mile markers 33 and 42.
 I-75 in Ohio near mile marker 14.

Do not stay in the open or seek shelter under trees when lightning
threatens. Move indoors when thunderstorms approach.

Water will pond on roads and may quickly fill roadside ditches and
small streams.

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 3872 8406 3925 8446 3930 8437 3929 8435
      3931 8435 3950 8400 3884 8356 3876 8388
      3877 8390 3876 8391
TIME...MOT...LOC 0148Z 245DEG 28KT 3924 8437 3882 8404

Novak

Special weather statement, May 21, 10:01 PM EDT, 28 minutes before

Special Weather Statement
National Weather Service Wilmington OH
1001 PM EDT MON MAY 21 2018

OHZ056-065-220230-
Licking OH-Fairfield OH-
1001 PM EDT MON MAY 21 2018

...A STRONG THUNDERSTORM WILL AFFECT NORTH CENTRAL FAIRFIELD AND
WESTERN LICKING COUNTIES UNTIL 1030 PM EDT...

At 1001 PM EDT, radar indicated a strong thunderstorm near Pataskala,
moving northeast at 25 mph.

STORM HAZARDS INCLUDE...
Winds to 50 mph...
Pea size hail...

Locations impacted include...
Newark, Reynoldsburg, Heath, Granville, Pataskala, Hebron, Beechwood
Trails, Granville South, Summit Station, Etna, Jersey, Kirkersville,
Alexandria, Fredonia and State Route 310 at State Route 161.

This includes I-70 in Ohio between mile markers 115 and 125.

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 3988 8268 3996 8277 3997 8278 3998 8277
      4003 8277 4024 8256 4004 8232
TIME...MOT...LOC 0201Z 227DEG 21KT 3996 8270

Novak

Special weather statement, May 21, 10:13 PM EDT, 16 minutes before

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Local storm report, May 21, 10:23 PM EDT, 6 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
May 21, 8:01 PM EDT	Severe Thunderstorm Warning	ILN	Fayette, Franklin, Madison, Pickaway	44 min
May 21, 8:08 PM EDT	Special Weather Statement	ILN	Champaign	37 min
May 21, 8:11 PM EDT	Special Weather Statement	ILN	Ross	34 min
May 21, 8:13 PM EDT	Special Weather Statement	ILN	Auglaize	32 min
May 21, 8:15 PM EDT	Special Weather Statement	ILN	Union	30 min
May 21, 8:25 PM EDT	Special Weather Statement	ILN	Delaware	50 min
May 21, 8:39 PM EDT	Severe Thunderstorm Warning	ILN	Fayette, Franklin, Madison, Pickaway	51 min
May 21, 8:41 PM EDT	Special Weather Statement	ILN	Madison	34 min
May 21, 8:48 PM EDT	Severe Thunderstorm Warning	ILN	Delaware, Union	42 min
May 21, 8:54 PM EDT	Areal Flood Advisory	ILN	Delaware, Union	5 hr
May 21, 9:06 PM EDT	Flash Flood Warning	ILN	Delaware, Union	3 hr
May 21, 9:10 PM EDT	Special Weather Statement	ILN	Madison, Union	50 min
May 21, 9:11 PM EDT	Areal Flood Advisory	ILN	Highland, Ross	3 hr
May 21, 9:15 PM EDT	Severe Thunderstorm Warning	ILN	Clark, Delaware, Franklin, Licking, Madison, Union	60 min
May 21, 9:23 PM EDT	Special Weather Statement	ILN	Pickaway	52 min
May 21, 9:30 PM EDT	Special Weather Statement	ILN	Clermont	30 min
May 21, 9:33 PM EDT	Special Weather Statement	ILN	Madison	42 min
May 21, 9:44 PM EDT	Special Weather Statement	ILN	Clinton, Fayette	46 min
May 21, 9:47 PM EDT	Areal Flood Advisory	ILN	Pickaway	3 hr
May 21, 9:48 PM EDT	Special Weather Statement	ILN	Brown, Clermont	27 min
May 21, 9:54 PM EDT	Flash Flood Watch	ILN	Adams, Brown, Champaign, Clark, Clermont, Clinton and 12 more	6 hr
May 21, 10:01 PM EDT	Special Weather Statement	ILN	Licking	29 min
May 21, 10:03 PM EDT	Severe Thunderstorm Warning	ILN	Brown, Clermont, Clinton, Highland	42 min
May 21, 10:04 PM EDT	Tornado Warning	ILN	Brown, Highland	26 min
May 21, 10:13 PM EDT	Special Weather Statement	ILN	Fairfield, Franklin, Licking	62 min
May 21, 10:27 PM EDT	Areal Flood Advisory	ILN	Delaware, Fayette, Franklin, Licking, Madison, Pickaway	3 hr
May 21, 10:51 PM EDT	Special Weather Statement	ILN	Fayette	39 min
May 21, 11:30 PM EDT	Special Weather Statement	ILN	Pickaway, Ross	30 min
May 21, 11:59 PM EDT	Areal Flood Advisory	ILN	Delaware, Licking, Union	3 hr
May 22, 9:32 AM EDT	River Flood Warning	ILN	Adams	10 hr
May 22, 12:58 PM EDT	Special Weather Statement	ILN	Shelby	32 min
May 22, 1:25 PM EDT	Special Weather Statement	ILN	Hardin	35 min
May 22, 3:31 PM EDT	Special Weather Statement	ILN	Hardin	29 min
May 22, 5:50 PM EDT	Special Weather Statement	ILN	Hamilton	25 min
May 22, 6:03 PM EDT	Special Weather Statement	ILN	Pickaway	27 min
May 22, 6:16 PM EDT	Severe Thunderstorm Warning	ILN	Pickaway	33 min
May 22, 6:53 PM EDT	Special Weather Statement	ILN	Clermont	37 min
May 22, 7:01 PM EDT	Special Weather Statement	ILN	Hocking	29 min
May 21, 8:31 PM EDT	Special Weather Statement	ILN	Bracken	44 min
May 21, 8:51 PM EDT	Special Weather Statement	ILN	Boone, Kenton	24 min
May 21, 9:08 PM EDT	Special Weather Statement	ILN	Bracken, Pendleton	52 min
May 22, 6:37 PM EDT	Special Weather Statement	ILN	Campbell	38 min
May 22, 7:07 PM EDT	Special Weather Statement	ILN	Boone	38 min
May 22, 7:15 PM EDT	Special Weather Statement	ILN	Campbell	30 min
May 22, 7:44 PM EDT	Special Weather Statement	ILN	Pendleton	31 min
May 21, 8:23 PM EDT	Special Weather Statement	ILN	Ohio	37 min

Nearby

Severe Thunderstorm Warnings in Ohio, 2018 Every severe thunderstorm warning in 2018

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.