Alert archive / Ohio / Excessive Heat Warnings in 2017

Excessive Heat Warning 1, NWS Wilmington, OH

July 22, 2017Hamilton County, Ohio

NWS Wilmington, OH issued this excessive heat warning at Jul 22, 2017, 3:48 AM EDT for Hamilton County, Ohio. It was in force for 15 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Jul 22, 2017, 3:48 AM EDT (07:48 UTC)
Expired
Jul 22, 2017, 6:48 PM EDT
In force
15 hr
Issued by
NWS Wilmington, OH

County Hamilton County, OH

The radar

The Cincinnati radar (KILN), 67 km from the middle of the area, began a volume at 07:49 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, 7.8 hours before the alert went out and 69 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, Cncnati-Daytn, OH at 00:00Z on 2017-07-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 111 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, Cncnati-Daytn, OH at 00:00Z on 2017-07-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 32 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
111 J/kg
Mixed-layer CIN
-126 J/kg
Mixed-layer LCL
1423 m above ground
0-6 km bulk shear
24 kt
0-1 km storm-relative helicity
32 m²/s²
0-3 km storm-relative helicity
41 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 excessive heat 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 excessive heat warning went out at Jul 22, 2:38 AM EDT, 1 hour 10 minutes earlier.

Area forecast discussion, Jul 22, 2:38 AM EDT, 1 hour 10 minutes before
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Hazardous weather outlook, Jul 22, 2:33 AM EDT, 1 hour 15 minutes before
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In the hours before

Special weather statement, Jul 21, 10:12 PM EDT, 5 hours 36 minutes before
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Special weather statement, Jul 21, 10:48 PM EDT, 5 hours before
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Local storm report, Jul 21, 11:45 PM EDT, 4 hours 3 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE WILMINGTON OH
1145 PM EDT FRI JUL 21 2017

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

1120 PM     TSTM WND DMG     2 ESE LUCASVILLE        38.87N 82.96W
07/21/2017                   SCIOTO             OH   EMERGENCY MNGR

            ONE LARGE TREE DOWN. TIME ESTIMATED.

&&
Special weather statement, Jul 22, 3:48 AM EDT, 0 minutes before
Special Weather Statement
National Weather Service Wilmington OH
348 AM EDT SAT JUL 22 2017

OHZ034-035-220800-
Auglaize OH-Mercer OH-
348 AM EDT SAT JUL 22 2017

...A STRONG THUNDERSTORM WILL AFFECT NORTHWESTERN AUGLAIZE AND
NORTHEASTERN MERCER COUNTIES UNTIL 400 AM EDT...

At 348 AM EDT, radar indicated a strong thunderstorm near
Spencerville In Allen County, moving northeast at 25 mph.

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

Locations impacted include...
Fort Shawnee, Cridersville, Mendon, Buckland, Kossuth and State Route
116 at State Route 197.

This includes I-75 in Ohio near mile marker 118.

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 4068 8445 4069 8422 4066 8422 4066 8411
      4064 8411 4061 8448 4068 8451 4071 8446
TIME...MOT...LOC 0748Z 246DEG 24KT 4066 8444

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 21, 8:21 PM EDTSevere Thunderstorm WarningILNClermont18 min
Jul 21, 10:12 PM EDTSpecial Weather StatementILNAdams33 min
Jul 21, 10:48 PM EDTSpecial Weather StatementILNRoss27 min
Jul 22, 3:48 AM EDTSpecial Weather StatementILNAuglaize12 min
Jul 22, 3:56 AM EDTAreal Flood AdvisoryILNAuglaize, Mercer3 hr
Jul 22, 4:52 AM EDTSpecial Weather StatementILNAuglaize, Mercer23 min
Jul 22, 5:13 AM EDTSpecial Weather StatementILNAuglaize, Shelby32 min
Jul 22, 5:25 AM EDTAreal Flood AdvisoryILNAuglaize, Hardin3 hr
Jul 22, 5:30 AM EDTSpecial Weather StatementILNMiami30 min
Jul 22, 5:43 AM EDTSpecial Weather StatementILNLogan32 min
Jul 22, 5:56 AM EDTSpecial Weather StatementILNChampaign, Union34 min
Jul 22, 5:58 AM EDTSpecial Weather StatementILNClark, Greene32 min
Jul 22, 6:25 AM EDTSpecial Weather StatementILNDelaware35 min
Jul 22, 6:28 AM EDTSpecial Weather StatementILNFranklin, Madison32 min
Jul 22, 6:36 AM EDTFlash Flood WarningILNAuglaize, Mercer5 hr
Jul 22, 6:43 AM EDTSevere Thunderstorm WarningILNDelaware17 min
Jul 22, 6:57 AM EDTSpecial Weather StatementILNFairfield, Licking, Pickaway48 min
Jul 22, 7:03 AM EDTSpecial Weather StatementILNPickaway42 min
Jul 22, 7:09 AM EDTSevere Thunderstorm WarningILNFairfield, Franklin, Licking25 min
Jul 22, 7:33 AM EDTSpecial Weather StatementILNLicking12 min
Jul 22, 8:09 AM EDTSpecial Weather StatementILNHocking36 min
Jul 22, 11:21 AM EDTAreal Flood WarningILNAuglaize6 hr
Jul 22, 3:10 PM EDTSpecial Weather StatementILNFairfield35 min
Jul 22, 3:11 PM EDTSpecial Weather StatementILNMadison34 min
Jul 22, 3:17 PM EDTSevere Thunderstorm WarningILNFairfield, Hocking43 min
Jul 22, 3:18 PM EDTSevere Thunderstorm WarningILNClark, Madison42 min
Jul 22, 3:39 PM EDTSevere Thunderstorm WarningILNFranklin, Madison, Pickaway36 min
Jul 22, 3:40 PM EDTAreal Flood AdvisoryILNFairfield, Hocking3 hr
Jul 22, 3:55 PM EDTSevere Thunderstorm WarningILNFairfield, Hocking50 min
Jul 22, 4:14 PM EDTFlash Flood WarningILNFairfield, Hocking3 hr
Jul 22, 4:16 PM EDTSpecial Weather StatementILNFairfield, Pickaway29 min
Jul 22, 4:43 PM EDTSevere Thunderstorm WarningILNFairfield, Hocking47 min
Jul 22, 5:05 PM EDTFlash Flood WarningILNHocking115 min
Jul 22, 6:03 PM EDTSpecial Weather StatementILNHocking27 min
Jul 22, 6:44 PM EDTAreal Flood AdvisoryILNHocking3 hr
Jul 22, 7:14 PM EDTSpecial Weather StatementILNRoss16 min
Jul 21, 8:00 PM EDTSpecial Weather StatementILNCampbell30 min
Jul 21, 8:06 PM EDTSpecial Weather StatementILNKenton24 min
Jul 21, 8:13 PM EDTSevere Thunderstorm WarningILNBoone, Grant, Kenton, Pendleton32 min
Jul 21, 8:42 PM EDTSpecial Weather StatementILNBracken, Pendleton33 min
Jul 21, 8:47 PM EDTAreal Flood AdvisoryILNCampbell88 min
Jul 22, 1:28 PM EDTSpecial Weather StatementILNBracken32 min
Jul 22, 1:55 PM EDTSpecial Weather StatementILNMason, Robertson35 min
Jul 22, 2:44 PM EDTSpecial Weather StatementILNLewis31 min
Jul 22, 7:33 PM EDTSpecial Weather StatementILNCampbell, Kenton27 min

Nearby

Excessive Heat Warnings in Ohio, 2017Every excessive heat warning in 2017

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.