Alert archive / Ohio / Frost Advisories in 2026

Frost Advisory 3, NWS Wilmington, OH

April 18, 20268 counties in Ohio; 6 counties in Indiana

NWS Wilmington, OH issued this frost advisory at Apr 18, 2026, 3:51 PM EDT for 8 counties in Ohio; 6 counties in Indiana. It took effect at Apr 19, 2026, 2:00 AM EDT. It was in force for 7 hr.

The area

The counties it named.

The facts

Issued
Apr 18, 2026, 3:51 PM EDT (19:51 UTC)
In effect from
Apr 19, 2026, 2:00 AM EDT
Expired
Apr 19, 2026, 9:00 AM EDT
In force
7 hr
Issued by
NWS Wilmington, OH

Counties Dearborn County, IN, Fayette County, IN, Franklin County, IN, Ripley County, IN, Union County, IN, Wayne County, IN, Auglaize County, OH, Butler County, OH, Darke County, OH, Mercer County, OH, Miami County, OH, Montgomery County, OH, Preble County, OH, Shelby County, OH

The radar

The Cincinnati radar (KILN), 87 km from the middle of the area, began a volume at 19:51 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, 7.9 hours before the alert went out and 334 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 2026-04-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 2026-04-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -20 square meters per square second.1939587897Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1118 m above ground
0-6 km bulk shear
71 kt
0-1 km storm-relative helicity
-20 m²/s²
0-3 km storm-relative helicity
66 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 18, 12:10 PM EDTSpecial Weather StatementILNBrown, Highland35 min
Apr 18, 1:11 PM EDTSpecial Weather StatementILNRoss34 min
Apr 18, 1:47 PM EDTSpecial Weather StatementILNLicking28 min
Apr 18, 2:54 PM EDTFreeze WatchILNAuglaize, Champaign, Clark, Darke, Delaware, Fairfield and 9 more11 hr

Nearby

Frost Advisories in Ohio, 2026Frost Advisories in Indiana, 2026Every frost advisory in 2026

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.