Alert archive / Ohio / Special Weather Statements in 2018

Special Weather Statement, NWS Wilmington, OH

July 20, 2018Preble County, Ohio; Union County, Indiana

NWS Wilmington, OH issued this special weather statement at Jul 20, 2018, 1:38 PM EDT for Preble County, Ohio; Union County, Indiana. It was in force for 37 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
Jul 20, 2018, 1:38 PM EDT (17:38 UTC)
Expired
Jul 20, 2018, 2:15 PM EDT
In force
37 min
Issued by
NWS Wilmington, OH

Counties Union County, IN, Preble County, OH

The radar

The Cincinnati radar (KILN), 87 km from the middle of the area, began a volume at 17:40 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

Lincoln, IL (KILX), launched 12:00Z, 5.6 hours before the alert went out and 330 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, Lincoln, IL at 12:00Z on 2018-07-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 265 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Lincoln, IL at 12:00Z on 2018-07-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 273 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
265 J/kg
Mixed-layer CIN
-249 J/kg
Mixed-layer LCL
1579 m above ground
0-6 km bulk shear
36 kt
0-1 km storm-relative helicity
273 m²/s²
0-3 km storm-relative helicity
343 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.3

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at Jul 20, 11:47 AM EDT, 1 hour 51 minutes earlier.

Area forecast discussion, Jul 20, 11:47 AM EDT, 1 hour 51 minutes before
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Hazardous weather outlook, Jul 20, 10:06 AM EDT, 3 hours 32 minutes before
Hazardous Weather Outlook
National Weather Service Wilmington OH
1006 AM EDT Fri Jul 20 2018

INZ050-058-059-066-073>075-080-KYZ089>100-OHZ026-034-035-042>045-
051>054-060>063-070>072-077>081-211415-
Wayne-Fayette IN-Union IN-Franklin IN-Ripley-Dearborn-Ohio-
Switzerland-Carroll-Gallatin-Boone-Kenton-Campbell-Owen-Grant-
Pendleton-Bracken-Robertson-Mason-Lewis-Hardin-Mercer-Auglaize-Darke-
Shelby-Logan-Union OH-Miami-Champaign-Clark-Madison-Preble-
Montgomery-Greene-Fayette OH-Butler-Warren-Clinton-Hamilton-Clermont-
Brown-Highland-Adams-
1006 AM EDT Fri Jul 20 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...Today and Tonight.

Multiple rounds of thunderstorms are expected today, with strong to severe
beginning in early afternoon pushing from Indiana into Ohio and
Kentucky, and then at least one additional round of strong to
severe storms again in the very late afternoon into the evening,
again pusing in from Indiana into Ohio and Kentucky.

Severe storms are possible with each of these rounds of storms
through the evening hours. The main threat will be damaging wind.
Large hail is also possible, and there is an increased potential for
some storms to produce tornadoes.

Torrential rain is also possible. While widespread flash flooding is
not likely, where thunderstorms track repeatedly over the same area,
there is a flash flood threat.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will likely be needed.

OHZ046-055-056-064-065-073-074-082-088-211415-
Delaware-Franklin OH-Licking-Pickaway-Fairfield-Ross-Hocking-Pike-
Scioto-
1006 AM EDT Fri Jul 20 2018

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

.DAY ONE...Today and Tonight.

Widespread Showers and thunderstorms will push through area multiple
times today and into the evening.

Strong to severe storms are possible with an early to mid afternoon
round of storms, and again with a very late afternoon to early
evening round of storms. A few storms may become severe, with the
main threat being damaging wind, but large hail is also a threat.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will likely be needed.

In the hours before

Local storm report, Jul 20, 12:32 PM EDT, 1 hour 6 minutes before
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Special weather statement, Jul 20, 12:49 PM EDT, 49 minutes before
Special Weather Statement
National Weather Service Wilmington OH
1249 PM EDT FRI JUL 20 2018

INZ050-OHZ042-043-051-201715-
Wayne IN-Darke OH-Shelby OH-Miami OH-
1249 PM EDT FRI JUL 20 2018

...STRONG THUNDERSTORMS WILL AFFECT NORTHEASTERN WAYNE...SOUTHERN
SHELBY...CENTRAL DARKE AND NORTHWESTERN MIAMI COUNTIES UNTIL 115 PM
EDT...

At 1247 PM EDT, radar indicated strong thunderstorms over Versailles
extending back to near Whitewater, Indiana, moving northeast at 35
mph.

STORM HAZARDS INCLUDE...
Winds to 45 mph...
One half inch diameter hail...
Frequent cloud-to-ground lightning...
Very heavy rain...

Locations impacted include...
Sidney, Piqua, Greenville, Versailles, Covington, Newport, Bradford,
Ansonia, Hardin, Webster, Wayne Lakes, Russia, Gettysburg, Port
Jefferson, Bethel, Hollansburg, Palestine, Lockington, Union Corners
and Polo.

This includes I-75 in Ohio between mile markers 82 and 98.

Do not stay in the open or seek shelter under trees when lightning
threatens. Move indoors when a thunderstorm approaches.

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

Residents in these areas should remain alert. If these storms
become 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 4043 8402 4020 8403 3996 8484 4001 8488
      4001 8481 4015 8481
TIME...MOT...LOC 1647Z 246DEG 49KT 4022 8444

Binau
Special weather statement, Jul 20, 1:12 PM EDT, 26 minutes before
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Local storm report, Jul 20, 1:30 PM EDT, 8 minutes before
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Local storm report, Jul 20, 1:32 PM EDT, 6 minutes before
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Special weather statement, Jul 20, 1:38 PM EDT, 0 minutes before
Special Weather Statement
National Weather Service Wilmington OH
138 PM EDT FRI JUL 20 2018

INZ050-058-059-OHZ042-051-060-061-201815-
Fayette IN-Union IN-Wayne IN-Montgomery OH-Darke OH-Preble OH-
Miami OH-
138 PM EDT FRI JUL 20 2018

...A STRONG THUNDERSTORM WILL AFFECT SOUTHEASTERN WAYNE...UNION AND
EAST CENTRAL FAYETTE COUNTIES IN EAST CENTRAL INDIANA...PREBLE...
SOUTHEASTERN DARKE...WESTERN MONTGOMERY AND SOUTHWESTERN MIAMI
COUNTIES IN WEST CENTRAL OHIO UNTIL 215 PM EDT...

At 138 PM EDT, radar indicated a strong thunderstorm near Liberty,
moving east at 40 mph.

STORM HAZARDS INCLUDE...
Winds to 45 mph...
Pea size hail...
Frequent cloud-to-ground lightning...

Locations impacted include...
Dayton, Richmond, Trotwood, Miamisburg, Eaton, Moraine, West
Carrollton, Liberty, Camden, Lewisburg, New Paris, West Alexandria,
Gratis, West College Corner, Clayton, Salem, Brookville, Germantown,
New Lebanon and Farmersville.

This includes the following Interstates...
 I-70 in Indiana between mile markers 155 and 156.
 I-70 in Ohio between mile markers 0 and 25.

Do not stay in the open or seek shelter under trees when lightning
threatens. Move indoors when a thunderstorm approaches.

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 3977 8512 3999 8440 3962 8423 3957 8475
      3957 8481 3956 8481 3954 8500
TIME...MOT...LOC 1738Z 251DEG 45KT 3968 8487

Binau

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 20, 7:37 AM EDTSpecial Weather StatementILNBrown23 min
Jul 20, 7:57 AM EDTSpecial Weather StatementILNBrown33 min
Jul 20, 11:21 AM EDTSpecial Weather StatementILNPreble24 min
Jul 20, 11:36 AM EDTSpecial Weather StatementILNMercer24 min
Jul 20, 11:53 AM EDTSpecial Weather StatementILNDarke37 min
Jul 20, 12:02 PM EDTSpecial Weather StatementILNMontgomery43 min
Jul 20, 12:49 PM EDTSpecial Weather StatementILNDarke, Shelby26 min
Jul 20, 2:01 PM EDTSpecial Weather StatementILNMontgomery, Preble44 min
Jul 20, 2:32 PM EDTAreal Flood AdvisoryILNHamilton118 min
Jul 20, 2:36 PM EDTSevere Thunderstorm WarningILNHamilton39 min
Jul 20, 3:15 PM EDTSevere Thunderstorm WarningILNBrown, Clermont30 min
Jul 20, 3:56 PM EDTAreal Flood AdvisoryILNBrown, Clermont99 min
Jul 20, 3:58 PM EDTFlash Flood WatchILNAdams, Brown, Clermont, Hamilton, Scioto5 hr
Jul 20, 4:32 PM EDTSpecial Weather StatementILNPike, Scioto43 min
Jul 20, 6:27 AM EDTSpecial Weather StatementILNOwen33 min
Jul 20, 6:54 AM EDTSpecial Weather StatementILNOwen36 min
Jul 20, 8:43 AM EDTSpecial Weather StatementILNOwen32 min
Jul 20, 8:58 AM EDTSevere Thunderstorm WarningILNOwen20 min
Jul 20, 9:51 AM EDTAreal Flood AdvisoryILNOwen100 min
Jul 20, 10:31 AM EDTSpecial Weather StatementILNGallatin, Kenton29 min
Jul 20, 11:09 AM EDTSpecial Weather StatementILNCampbell, Kenton36 min
Jul 20, 2:27 PM EDTTornado WarningILNCarroll33 min
Jul 20, 2:49 PM EDTSevere Thunderstorm WarningILNBoone, Campbell, Carroll, Gallatin, Kenton25 min
Jul 20, 3:17 PM EDTAreal Flood AdvisoryILNBoone, Campbell, Carroll, Gallatin, Grant, Kenton and 2 more113 min
Jul 20, 3:34 PM EDTSevere Thunderstorm WarningILNGrant, Owen, Pendleton18 min
Jul 20, 4:12 PM EDTSpecial Weather StatementILNGallatin33 min
Jul 20, 6:59 PM EDTSpecial Weather StatementILNGallatin31 min
Jul 20, 7:10 PM EDTSevere Thunderstorm WarningILNCarroll, Gallatin35 min
Jul 20, 7:23 PM EDTSpecial Weather StatementILNGallatin37 min
Jul 20, 7:38 PM EDTSpecial Weather StatementILNGallatin, Grant, Owen37 min
Jul 20, 10:51 AM EDTSpecial Weather StatementILNFayette24 min
Jul 20, 1:12 PM EDTSpecial Weather StatementILNDearborn, Ripley63 min
Jul 20, 1:24 PM EDTSevere Thunderstorm WarningILNDearborn, Ripley51 min
Jul 20, 1:47 PM EDTAreal Flood AdvisoryILNDearborn, Ripley2 hr
Jul 20, 2:10 PM EDTSevere Thunderstorm WarningILNDearborn, Ohio, Ripley, Switzerland50 min
Jul 20, 2:11 PM EDTFlash Flood WarningILNDearborn, Ripley3 hr
Jul 20, 4:37 PM EDTSpecial Weather StatementILNOhio, Switzerland23 min
Jul 20, 5:17 PM EDTSpecial Weather StatementILNRipley28 min
Jul 20, 5:25 PM EDTSevere Thunderstorm WarningILNRipley35 min
Jul 20, 5:52 PM EDTFlash Flood WarningILNRipley113 min

Nearby

Special Weather Statements in Ohio, 2018Special Weather Statements in Indiana, 2018Every special weather statement 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.