For a third day running, high temperatures and a very moist airmass combined to create heat index values in excess of 100 degrees.
Every event with a place to put it; 2 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS ILN wrote it up.
For a third day running, high temperatures and a very moist airmass combined to create heat index values in excess of 100 degrees.
The local office's own words before the first event, 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 the first event at Jul 21, 9:48 AM EST, 3 hours 12 minutes earlier.
AREA FORECAST DISCUSSION
National Weather Service Wilmington OH
1048 AM EDT Sun Jul 21 2019
.SYNOPSIS...
Warm and humid conditions will continue today as a slow moving
cold front provides periods of scattered showers and storms
today through Monday. Cooler and drier air will settle by
midweek, with an extended stretch of below normal temperatures
and dry weather conditions expected for most of the upcoming
week.
&&
.NEAR TERM /UNTIL 6 PM THIS EVENING/...
Convection is developing in Kentucky in an area of higher CAPE.
Expect this area to continue throughout the morning. Meanwhile,
additional convection is expected to develop along a cold front
in northern Ohio later today. The two areas will try to merge
by late afternoon, giving scattered precipitation chances to the
entire forecast area. With the front in the area, a
thunderstorm or two could be strong to severe with damaging
winds and heavy rain the two main theats.
Heat headlines continue as is. Highs in the lower 90s still look
reasonable, with heat indices between 100-105.
&&
.SHORT TERM /6 PM THIS EVENING THROUGH 6 PM MONDAY/...
Ongoing convection near the I-70 corridor will shift southeast
through the late evening hours, with scattered coverage likely
to be maintained at times through the overnight period tonight.
In fact, a developing surface wave along the sagging front will
help stall the front /or at least slow its southward
progression/ late tonight into the day on Monday.
Midlevel energy ahead of the main trof axis will continue to
work its way east through the nighttime and early morning hours,
with a fairly strong signal for renewed shower/storm development
late tonight prior to daybreak -- especially for areas near and
south of the I-71 corridor. Due to the slower progression of
the various forcing mechanisms through the area on Monday --
most notably the surface wave developing along the front and
moving along and nearly parallel to the Ohio River --
convective redevelopment is expected Monday morning into the
afternoon. There continues to be an increasing signal, both
deterministically and from an ensemble perspective, in more
widespread rain and storms near/south of the I-71 corridor past
daybreak Monday through the end of the short term period.
Although areas from northern Kentucky through south-central Ohio
may not get much rain today (other than isolated/scattered
disorganized activity this afternoon), the better chance for
instances of heavy rain in these areas may end up being Monday
morning and afternoon. While certainly there was not enough
confidence to go with a flash flood watch in these areas, will
maintain mention in the HWO for Monday for the potential for
heavy rain and isolated flooding stretching from north-central
Kentucky through south-central Ohio.
There will be quite a bit of cloud cover and precipitation
ongoing throughout the day Monday, with high temperatures
considerably cooler than has been the case in recent memory.
Highs will top out in the lower to upper 70s from NW to SE,
respectively.
&&
.LONG TERM /MONDAY NIGHT THROUGH SATURDAY/...
The cold front will push off to our southeast Monday night into
Tuesday morning, allowing for the shower and thunderstorm activity
to gradually taper off. We will remain below normal for
temperatures with highs on Tuesday in the mid to upper 70s.
Surface high pressure will then build into the region for mid to late
week. However, the stronger mid and upper level ridging will remain
over the western United States. This will help keep our region in
more of a northwest flow pattern aloft. At this point, it looks like
any energy riding over the ridge will generally remain to our
north/northeast. As a result, will maintain a dry forecast through
Friday although suppose there could eventually be a lower end pcpn
later in the week.
High temperatures will slowly moderate to more normal daytime
readings. Highs by Friday and Saturday will be back into the mid to
possibly upper 80s.
&&
.AVIATION /15Z SUNDAY THROUGH THURSDAY/...
VFR conditions will prevail through the first part of the TAF
period as convectively-generated cirrus gradually overspreads
the area from the west during the morning hours, with VFR
diurnally- driven Cu expected to sprout by 15z. Isolated to
scattered storms will develop today, initially south/west of
even KCVG and KLUK before activity moves northeast and begins to
impact some of the terminals past 18z. This initial/southern
activity will be relatively slow moving and isolated/disorganized,
leading to uncertainties in exactly when/where it will have the
best chance at impacting southern sites of KILN, KCVG, and KLUK
by mid- afternoon. However, past about 21z or so, a more
organized complex/cluster of storms will likely be moving east
through the region, eventually impacting KDAY, KCMH, and KLCK
through the evening (approximately 22z-03z or so). There is
higher confidence in seeing this activity move over the northern
terminals than earlier day activity further south for southern
terminals. However, it appears likely that all of the local
sites will experience at least brief SHRA or TSRA activity at
some point in the several hour period around 00z. Between 03z-
06z, pcpn will become more isolated but not shut off completely,
so did keep a VC going through the remainder of the TAF period
as the best coverage of activity slides southeast later in the
overnight period.
Light southwesterly winds this morning and this afternoon will
go more westerly and eventually northerly toward the end of the
period as the front sags through the area. However, winds may
end up being more light and variable past sunset with a very
weak pressure gradient becoming temporarily established late
this evening through early Monday morning.
VFR CIGs this evening will likely go MVFR and potentially even
IFR towards daybreak Monday as abundant low level moisture works
into the area near the advancing frontal boundary. Of course,
brief MVFR CIGs and MVFR/IFR VSBYs will be possible with any
TSRA activity this afternoon/evening. However due to inherent
uncertainties involving timing and placement of such lower
VSBYs, these instances of brief VSBY reductions will be handled
with amendments as needed.
OUTLOOK...Thunderstorms are expected tonight into Monday. There
is potential for MVFR or even IFR CIGs late tonight into Monday
morning.
&&
.ILN WATCHES/WARNINGS/ADVISORIES...
OH...Heat Advisory until 8 PM EDT this evening for OHZ026-034-035-
042>046-051>056-060-062>065-070>074-078>082-088.
Excessive Heat Warning until 8 PM EDT this evening for OHZ061-
077.
KY...Heat Advisory until 8 PM EDT this evening for KYZ089>100.
IN...Heat Advisory until 8 PM EDT this evening for INZ050-058-059-
066-073>075-080.
&&
SYNOPSIS...KC/Sites
NEAR TERM...Sites
SHORT TERM...KC
LONG TERM...JGL
AVIATION...KCHazardous Weather Outlook National Weather Service Wilmington OH 408 AM EDT Sun Jul 21 2019 INZ050-058-059-066-073-074-OHZ026-034-035-042>046-051>056-060-062- 070-220815- Wayne-Fayette IN-Union IN-Franklin IN-Ripley-Dearborn-Hardin-Mercer- Auglaize-Darke-Shelby-Logan-Union OH-Delaware-Miami-Champaign-Clark- Madison-Franklin OH-Licking-Preble-Greene-Butler- 408 AM EDT Sun Jul 21 2019 ...HEAT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING... This Hazardous Weather Outlook is for East Central Indiana, Southeast Indiana, Central Ohio, Southwest Ohio and West Central Ohio. .DAY ONE...Today and tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Heat Advisory. Scattered storms are expected to develop this afternoon through tonight, with a few strong to severe storms possible during this time. The main threat will be damaging winds. Additionally, some of these storms could produce locally heavy rainfall, with isolated and localized flooding possible. .DAYS TWO THROUGH SEVEN...Monday through Saturday. There is a low probability for widespread hazardous weather. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. OHZ061-220815- Montgomery- 408 AM EDT Sun Jul 21 2019 ...EXCESSIVE HEAT WARNING IN EFFECT UNTIL 8 PM EDT THIS EVENING... This Hazardous Weather Outlook is for West Central Ohio. .DAY ONE...Today and tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Excessive Heat Warning. Scattered storms are expected to develop this afternoon through tonight, with a few strong to severe storms possible during this time. The main threat will be damaging winds. Additionally, some of these storms could produce locally heavy rainfall, with isolated and localized flooding possible. .DAYS TWO THROUGH SEVEN...Monday through Saturday. There is a low probability for widespread hazardous weather. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. INZ075-080-KYZ089>100-OHZ063>065-071>074-078>082-088-220815- Ohio-Switzerland-Carroll-Gallatin-Boone-Kenton-Campbell-Owen-Grant- Pendleton-Bracken-Robertson-Mason-Lewis-Fayette OH-Pickaway- Fairfield-Warren-Clinton-Ross-Hocking-Clermont-Brown-Highland-Adams- Pike-Scioto- 408 AM EDT Sun Jul 21 2019 ...HEAT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING... This Hazardous Weather Outlook is for Southeast Indiana, Northeast Kentucky, Northern Kentucky, Central Ohio, South Central Ohio and Southwest Ohio. .DAY ONE...Today and tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Heat Advisory. Scattered storms are expected to develop this afternoon through tonight, with a few strong to severe storms possible during this time. The main threat will be damaging winds. Additionally, some of these storms could produce locally heavy rainfall, with isolated and localized flooding possible. .DAYS TWO THROUGH SEVEN...Monday through Saturday. Additional scattered storms are expected Monday morning through early evening, with a few strong to severe storms possible during the afternoon. The main threat will be damaging winds. Some of these storms could also produce locally heavy rainfall, with isolated and localized flooding possible. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. OHZ077-220815- Hamilton- 408 AM EDT Sun Jul 21 2019 ...EXCESSIVE HEAT WARNING IN EFFECT UNTIL 8 PM EDT THIS EVENING... This Hazardous Weather Outlook is for Southwest Ohio. .DAY ONE...Today and tonight. Please listen to NOAA Weather Radio or go to weather.gov on the Internet for more information about the following hazards. Excessive Heat Warning. Scattered storms are expected to develop this afternoon through tonight, with a few strong to severe storms possible during this time. The main threat will be damaging winds. Additionally, some of these storms could produce locally heavy rainfall, with isolated and localized flooding possible. .DAYS TWO THROUGH SEVEN...Monday through Saturday. Additional scattered storms are expected Monday morning through early evening, with a few strong to severe storms possible during the afternoon. The main threat will be damaging winds. Some of these storms could also produce locally heavy rainfall, with isolated and localized flooding possible. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time.
Special Weather Statement
National Weather Service Wilmington OH
1148 AM EDT Sun Jul 21 2019
KYZ096>099-OHZ079-211630-
Pendleton KY-Robertson KY-Mason KY-Bracken KY-Brown OH-
1148 AM EDT Sun Jul 21 2019
...A LINE OF STRONG THUNDERSTORMS WILL AFFECT MASON...ROBERTSON...
BRACKEN...SOUTHEASTERN PENDLETON AND SOUTHERN BROWN COUNTIES UNTIL
1230 PM EDT...
At 1147 AM EDT, radar indicated strong thunderstorms along a line
extending from near Maysville to 11 miles north of Cynthiana, moving
northeast at 20 mph.
STORM HAZARDS INCLUDE...
Winds to 35 mph...
Pea size hail...
Frequent cloud-to-ground lightning...
Very heavy rain...
Locations impacted include...
Maysville, Washington, Ripley, Aberdeen, Augusta, Lewisburg,
Brooksville, Higginsport, Mount Olivet, Dover, Germantown, Sardis,
Browning Corner, Burika, Stonewall, Mays Lick, Powersville,
Johnsville, Tuckahoe and Piqua.
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 3846 8410 3848 8413 3848 8415 3849 8415
3848 8417 3850 8416 3850 8418 3856 8416
3855 8421 3856 8422 3857 8420 3858 8421
3858 8426 3874 8430 3882 8377 3852 8367
3847 8390 3849 8393 3846 8397 3844 8404
TIME...MOT...LOC 1547Z 205DEG 19KT 3861 8374 3854 8422
NovakPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE WILMINGTON OH
1243 PM EDT SUN JUL 21 2019
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1223 PM TSTM WND DMG AUGUSTA 38.77N 84.00W
07/21/2019 BRACKEN KY LAW ENFORCEMENT
TREES DOWN. TIME ESTIMATED FROM RADAR.
&&
BINAUSpecial Weather Statement
National Weather Service Wilmington OH
1244 PM EDT Sun Jul 21 2019
OHZ079-080-211715-
Highland OH-Brown OH-
1244 PM EDT Sun Jul 21 2019
...A STRONG THUNDERSTORM WILL AFFECT NORTHERN BROWN AND SOUTHWESTERN
HIGHLAND COUNTIES UNTIL 115 PM EDT...
At 1243 PM EDT, radar indicated a strong thunderstorm over Mount
Orab, moving north at 35 mph.
STORM HAZARDS INCLUDE...
Winds to 50 mph...
The wind gusts may occur well ahead of any rain.
Locations impacted include...
Mount Orab, Sardinia, New Market, Hamersville, Mowrystown,
Fayetteville, St. Martin, Chasetown, Danville in Highland County,
Greenbush, Lake Waynoka, Buford, State Route 32 at US Route 68, New
Hope, Locust Ridge, Lake Lorelei and State Route 136 at US Route 62.
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 3893 8403 3925 8399 3923 8383 3922 8384
3923 8381 3920 8363 3889 8380
TIME...MOT...LOC 1643Z 193DEG 29KT 3900 8390
FranksSpecial Weather Statement
National Weather Service Wilmington OH
148 PM EDT Sun Jul 21 2019
OHZ073-082-211815-
Pike OH-Ross OH-
148 PM EDT Sun Jul 21 2019
...A RAPIDLY DEVELOPING THUNDERSTORM WILL AFFECT NORTH CENTRAL PIKE
AND SOUTH CENTRAL ROSS COUNTIES UNTIL 215 PM EDT...
At 148 PM EDT, radar indicated a thunderstorm 7 miles northwest of
Waverly, moving northeast at 10 mph.
STORM HAZARDS INCLUDE...
Winds to 45 mph...
Frequent cloud-to-ground lightning...
Very heavy rain...
Locations impacted include...
Chillicothe, Waverly, Pike Lake, Summithill, Massieville, Lake White,
Idaho and Buchanan.
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.
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 8320 3932 8306 3932 8290 3902 8306
3903 8314
TIME...MOT...LOC 1748Z 222DEG 10KT 3922 8305
FranksSpecial Weather Statement National Weather Service Wilmington OH 152 PM EDT Sun Jul 21 2019 OHZ063-080-211815- Highland OH-Fayette OH- 152 PM EDT Sun Jul 21 2019 ...A RAPIDLY DEVELOPING THUNDERSTORM WILL AFFECT SOUTH CENTRAL FAYETTE AND NORTH CENTRAL HIGHLAND COUNTIES UNTIL 215 PM EDT... At 152 PM EDT, radar indicated a thunderstorm near Leesburg, moving northeast at 15 mph. STORM HAZARDS INCLUDE... Winds to 40 mph... Frequent cloud-to-ground lightning... Very heavy rain... Locations impacted include... Leesburg, Highland, New Martinsburg and East Monroe. 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. 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 3933 8365 3943 8353 3943 8340 3933 8343 TIME...MOT...LOC 1752Z 227DEG 14KT 3938 8350 Franks
The national radar mosaic for the moment the first event began.
2 excessive heat. Local standard time, as filed.
High temperatures in the 90s across Montgomery County and the Dayton metropolitan area combined with high relative humidity created heat index values in excess of 100 degrees for a third day in a row.
High temperatures in the 90s across Hamilton County and the Cincinnati metropolitan area combined with high relative humidity created heat index values in excess of 100 degrees for a third day in a row.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Ohio in 2019Every state in 2019This day in weather historyWarnings in Ohio, July 2019
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 848005, 848006.