Alert archive / Ohio / Special Weather Statements in 2021

Special Weather Statement, NWS Wilmington, OH

June 30, 2021Clermont County, Ohio

NWS Wilmington, OH issued this special weather statement at Jun 30, 2021, 6:56 PM EDT for Clermont County, Ohio. It was in force for 34 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: Jun 30, 2021, 6:56 PM EDT (22:56 UTC)
Expired: Jun 30, 2021, 7:30 PM EDT
In force: 34 min
Issued by: NWS Wilmington, OH

County Clermont County, OH

The radar

The Cincinnati radar (KILN), 51 km from the middle of the area, began a volume at 22:57 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 12:00Z, 10.9 hours before the alert went out and 53 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: 608 J/kg
Mixed-layer CIN: -78 J/kg
Mixed-layer LCL: 1164 m above ground
0-6 km bulk shear: 20 kt
0-1 km storm-relative helicity: -4 m²/s²
0-3 km storm-relative helicity: -19 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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 Jun 30, 4:10 PM EDT, 2 hours 46 minutes earlier.

Area forecast discussion, Jun 30, 4:10 PM EDT, 2 hours 46 minutes before

AREA FORECAST DISCUSSION
National Weather Service Wilmington OH
410 PM EDT Wed Jun 30 2021

.SYNOPSIS...
Showers and thunderstorms are forecast to develop this evening
and continue through Thursday as a cold front travels from the
Great Lakes to the Ohio Valley. Cooler and drier weather is
expected to accompany high pressure for Friday and Saturday.
Warmer temperatures return next week when the high tracks east.

&&

.NEAR TERM /UNTIL 6 AM THURSDAY MORNING/...
Warm and humid conditions will continue this evening through
tonight as a cold front slowly slides south into the Great
Lakes. In advance of the front, subtle mid-level perturbations
as well as a pre-frontal convergence at the surface will spark
increasing showers and thunderstorms. Initially this
precipitation will start as diurnally driven... however, forcing
will increase late tonight with the approach of the frontal
boundary. PoPs reflect this increase in coverage.

Have kept a mention of a couple strong to severe storms in the
HWO based on modest instability combined with effective bulk
shear increasing to 20-25 knots late this evening.

Low temperatures will be a couple degrees on either side of 70.

&&

.SHORT TERM /6 AM THURSDAY MORNING THROUGH THURSDAY NIGHT/...
Cold front pushing south through the forecast area Thursday will
be focus of additional showers and storms. Expected high
coverage of showers due to better low-level forcing will likely
keep instability down. However, with 20-25 knots of shear, have
kept potential in the HWO for gusty winds with a few storms.
Highs depend on timing of front, ranging from near 80 in the
north to the mid 70s in the south due to precipitation.

PoPs drop significantly behind the front as drier air filters
in, so most locations will see a decreasing cloud trend Thursday
night in addition to low temperatures dipping to near 60
degrees.

&&

.LONG TERM /FRIDAY THROUGH WEDNESDAY/...
Closed low to settle south thru the Great Lakes and into PA Friday.
Model solutions trending farther east and therefore keeping ILN/s
area in a dry northerly flow. Cooler and drier air mass with
Friday's highs in the mid and upper 70s.

Northerly mid level flow with surface high pressure building south
through the Mississippi Valley for the weekend. Expect dry
conditions with highs in the upper 70s Saturday, warming to the mid
80s Sunday.

Broad mid level ridge to build into the area early next week. This
ridge will offer a warming trend and increased humidity. Highs on
Monday and Tuesday are expected to be in the upper 80s to lower 90s.

Diurnal convection chances increase Tuesday and Wednesday, although
confidence remains fairly low at this time. warm readings to
continue with highs both days in the upper 80s to around 90.

&&

.AVIATION /20Z WEDNESDAY THROUGH MONDAY/...
Warm and humid conditions today will lead to scattered showers
and storms through the afternoon hours. Showers will increase
tonight as a cold front begins approaching the terminals from
north to south. Behind the front, models growing in confidence
that cloud bases will lower to near IFR threshold. Have held
just above this threshold for now -- but may lower to below
1,000 feet in future TAF updates if confidence continues to
improve.

Winds will shift from light southwesterly this afternoon through
tonight to light northwesterly behind the front on Thursday.

.OUTLOOK...Thunderstorms possible through Thursday.

&&

.ILN WATCHES/WARNINGS/ADVISORIES...
OH...None.
KY...None.
IN...None.

&&

SYNOPSIS...Coniglio/Hogue
NEAR TERM...Hogue
SHORT TERM...Hogue
LONG TERM...AR
AVIATION...Hogue

Hazardous weather outlook, Jun 30, 3:44 PM EDT, 3 hours 12 minutes before

Hazardous Weather Outlook
National Weather Service Wilmington OH
344 PM EDT Wed Jun 30 2021

INZ050-058-059-066-073>075-080-KYZ089>100-OHZ026-034-035-042>046-
051>056-060>065-070>074-077>082-088-011945-
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-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-
344 PM EDT Wed Jun 30 2021

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...This afternoon and tonight.

Showers and thunderstorms are likely this evening. A few of the
storms may become strong to severe. The primary threat is strong to
damaging winds. Locally heavy rainfall will also be possible.

.DAYS TWO THROUGH SEVEN...Thursday through Tuesday.

Locally heavy rainfall and strong wind gusts may accompany
thunderstorms on Thursday.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

In the hours before

Special weather statement, Jun 30, 5:15 PM EDT, 1 hour 41 minutes before

Special Weather Statement
National Weather Service Wilmington OH
515 PM EDT Wed Jun 30 2021

OHZ071-072-078-079-302145-
Clermont OH-Brown OH-Warren OH-Clinton OH-
515 PM EDT Wed Jun 30 2021

...A STRONG THUNDERSTORM WILL AFFECT NORTHEASTERN CLERMONT...NORTH
CENTRAL BROWN...SOUTHEASTERN WARREN AND SOUTHWESTERN CLINTON COUNTIES
UNTIL 545 PM EDT...

At 515 PM EDT, radar indicated a strong thunderstorm near
Blanchester, moving east at 15 mph.

STORM HAZARDS INCLUDE...
Winds to 45 mph...
Penny size hail...

Locations impacted include...
Blanchester, Woodville, Goshen, Newtonsville, Fayetteville, Midland,
Butlerville, Pleasant Plain, Westboro, State Route 123 at State Route
132, Edenton and Lake Lorelei.

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 3919 8419 3928 8419 3939 8393 3917 8389
TIME...MOT...LOC 2115Z 267DEG 14KT 3925 8408

Campbell

Special weather statement, Jun 30, 5:41 PM EDT, 1 hour 15 minutes before

Special Weather Statement
National Weather Service Wilmington OH
541 PM EDT Wed Jun 30 2021

OHZ073-080-302215-
Highland OH-Ross OH-
541 PM EDT Wed Jun 30 2021

...A STRONG THUNDERSTORM WILL AFFECT NORTHEASTERN HIGHLAND AND
WESTERN ROSS COUNTIES UNTIL 615 PM EDT...

At 541 PM EDT, radar indicated a strong thunderstorm near Greenfield,
moving east at 30 mph.

STORM HAZARDS INCLUDE...
Winds to 40 mph...
One half inch diameter hail...

Locations impacted include...
Greenfield, Frankfort, South Salem, Bourneville, Knockemstiff,
Lattaville, Austin and Paint Creek State Park.

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 3926 8348 3935 8350 3938 8341 3938 8337
      3940 8336 3947 8314 3922 8309
TIME...MOT...LOC 2141Z 264DEG 27KT 3931 8339

Campbell

Special weather statement, Jun 30, 6:25 PM EDT, 31 minutes before

Special Weather Statement
National Weather Service Wilmington OH
625 PM EDT Wed Jun 30 2021

OHZ079>081-302300-
Highland OH-Adams OH-Brown OH-
625 PM EDT Wed Jun 30 2021

...A STRONG THUNDERSTORM WILL AFFECT NORTHEASTERN BROWN...
NORTHWESTERN ADAMS AND SOUTHWESTERN HIGHLAND COUNTIES UNTIL 700 PM
EDT...

At 625 PM EDT, radar indicated a strong thunderstorm near Belfast,
moving east at 15 mph.

STORM HAZARDS INCLUDE...
Winds to 40 mph...
Pea size hail...

Locations impacted include...
Hillsboro, Winchester, Sardinia, Seaman, Belfast, New Market,
Emerald, Mowrystown, Danville in Highland County, Buford, Fincastle,
Berrysville and State Route 136 at US Route 62.

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 3911 8388 3920 8374 3918 8360 3912 8347
      3893 8359 3898 8375 3903 8383
TIME...MOT...LOC 2225Z 290DEG 15KT 3907 8368

Campbell

Special weather statement, Jun 30, 6:33 PM EDT, 23 minutes before

Special Weather Statement
National Weather Service Wilmington OH
633 PM EDT Wed Jun 30 2021

KYZ091>093-OHZ070-077-302300-
Boone KY-Kenton KY-Campbell KY-Hamilton OH-Butler OH-
633 PM EDT Wed Jun 30 2021

...A STRONG THUNDERSTORM WILL AFFECT NORTHERN KENTON...NORTHERN
CAMPBELL...NORTHERN BOONE...HAMILTON AND SOUTHEASTERN BUTLER COUNTIES
UNTIL 700 PM EDT...

At 632 PM EDT, radar indicated a strong thunderstorm over Reading,
moving east at 15 mph.

STORM HAZARDS INCLUDE...
Winds to 45 mph...
One half inch diameter hail...
Very heavy rain...

Locations impacted include...
Cincinnati, Fairfield, Covington, Norwood, Forest Park, Erlanger,
Fort Thomas, Newport, Sharonville, Blue Ash, Loveland, Springdale,
Reading, Montgomery, Harrison, North College Hill, Madeira, Wyoming,
Cheviot and Fort Mitchell.

This includes the following Interstates...
 I-71 in Ohio between mile markers 0 and 19.
 I-74 in Ohio between mile markers 4 and 19.
 I-75 in Kentucky between mile markers 189 and 191.
 I-75 in Ohio between mile markers 0 and 19.

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 3920 8482 3924 8479 3933 8463 3933 8447
      3932 8435 3929 8435 3929 8430 3924 8430
      3922 8432 3921 8431 3921 8429 3917 8429
      3916 8430 3911 8431 3905 8457 3907 8482
TIME...MOT...LOC 2232Z 290DEG 15KT 3920 8445

Campbell

Special weather statement, Jun 30, 6:43 PM EDT, 13 minutes before

Special Weather Statement
National Weather Service Wilmington OH
643 PM EDT Wed Jun 30 2021

OHZ080>082-302315-
Pike OH-Highland OH-Adams OH-
643 PM EDT Wed Jun 30 2021

...A STRONG THUNDERSTORM WILL AFFECT NORTH CENTRAL ADAMS...
NORTHWESTERN PIKE AND SOUTHEASTERN HIGHLAND COUNTIES UNTIL 715 PM
EDT...

At 643 PM EDT, radar indicated a strong thunderstorm near Marshall,
moving east at 15 mph.

STORM HAZARDS INCLUDE...
Winds to 45 mph...
One half inch diameter hail...
Very heavy rain...

Locations impacted include...
Marshall, Sinking Spring, Berrysville, Smoky Corners, Serpent Mound
and Locust Grove.

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 3910 8359 3916 8354 3916 8328 3896 8339
TIME...MOT...LOC 2243Z 290DEG 15KT 3910 8349

Campbell

Special weather statement, Jun 30, 6:56 PM EDT, 0 minutes before

Special Weather Statement
National Weather Service Wilmington OH
656 PM EDT Wed Jun 30 2021

KYZ093-OHZ077-078-302330-
Campbell KY-Hamilton OH-Clermont OH-
656 PM EDT Wed Jun 30 2021

...A STRONG THUNDERSTORM WILL AFFECT NORTHERN CAMPBELL...EASTERN
HAMILTON AND NORTHERN CLERMONT COUNTIES UNTIL 730 PM EDT...

At 655 PM EDT, radar indicated a strong thunderstorm over Madeira,
moving east at 40 mph.

STORM HAZARDS INCLUDE...
Winds to 40 mph...
Pea size hail...
Very heavy rain...

Locations impacted include...
Cincinnati, Norwood, Fort Thomas, Newport, Sharonville, Blue Ash,
Loveland, Reading, Montgomery, Madeira, Highland Heights, Milford,
Bellevue, Deer Park, Dayton, Southgate, Forestville, Amelia,
Mariemont and Terrace Park.

This includes the following Interstates...
 I-71 in Ohio between mile markers 1 and 19.
 I-75 in Ohio between mile markers 7 and 13.

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 3901 8442 3913 8454 3930 8440 3929 8427
      3927 8426 3925 8400 3897 8415
TIME...MOT...LOC 2255Z 280DEG 37KT 3920 8433

Hatzos

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 29, 8:10 PM EDT	Special Weather Statement	ILN	Warren	35 min
Jun 29, 8:10 PM EDT	Special Weather Statement	ILN	Clinton	35 min
Jun 29, 9:42 PM EDT	Special Weather Statement	ILN	Madison	33 min
Jun 30, 8:18 AM EDT	Areal Flood Advisory	ILN	Montgomery, Preble	2 hr
Jun 30, 11:20 AM EDT	Special Weather Statement	ILN	Delaware	25 min
Jun 30, 11:50 AM EDT	Special Weather Statement	ILN	Licking	10 min
Jun 30, 4:26 PM EDT	Special Weather Statement	ILN	Hocking	34 min
Jun 30, 5:13 PM EDT	Special Weather Statement	ILN	Butler	32 min
Jun 30, 5:15 PM EDT	Special Weather Statement	ILN	Warren	30 min
Jun 30, 5:41 PM EDT	Special Weather Statement	ILN	Ross	34 min
Jun 30, 6:25 PM EDT	Special Weather Statement	ILN	Highland	35 min
Jun 30, 6:33 PM EDT	Special Weather Statement	ILN	Hamilton	27 min
Jun 30, 6:42 PM EDT	Areal Flood Advisory	ILN	Hamilton	106 min
Jun 30, 6:43 PM EDT	Special Weather Statement	ILN	Highland	32 min
Jun 30, 7:49 PM EDT	Special Weather Statement	ILN	Pike	26 min
Jun 29, 8:14 PM EDT	Areal Flood Advisory	ILN	Dearborn, Ripley	3 hr
Jun 29, 8:33 PM EDT	Special Weather Statement	ILN	Dearborn, Ripley	27 min
Jun 29, 9:52 PM EDT	Special Weather Statement	ILN	Fayette, Franklin, Union	23 min
Jun 29, 10:13 PM EDT	Special Weather Statement	ILN	Fayette	32 min
Jun 29, 10:40 PM EDT	Special Weather Statement	ILN	Fayette, Wayne	35 min
Jun 30, 12:20 AM EDT	Areal Flood Advisory	ILN	Ripley	3 hr

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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.