Frost advisory for Clark County cancelled early
The National Weather Service called off Monday's frost warning for Clark County hours before it was due to expire.
How the advisory changed overnight
The weather service updated the advisory overnight, at 2:40 a.m. Monday, lowering the forecast low to as cold as 37 degrees but keeping the same 9 a.m. cutoff NWS. Frost could still harm sensitive outdoor plants under that update NWS. The advisory covered parts of east central and southeast Indiana, northeast and northern Kentucky, and central, south central, southwest and west central Ohio, including Clark County NWS +1.
The weather service cancelled the advisory at 8:54 a.m. Monday, ahead of its planned 9 a.m. expiration NWS. The cancellation notice said the advisory was no longer in effect NWS.
This report is based on Frost Advisory alerts for Clark County issued and updated by the National Weather Service office in Wilmington, Ohio, on October 18 and 19, 2026, including the cancellation notice issued that Monday morning NWS +2.
Sources
The source filing
| Event | Frost Advisory |
|---|---|
| Message type | Alert |
| Severity | Minor |
| Certainty | Likely |
| Urgency | Expected |
| Headline | Frost Advisory issued October 18 at 1:22PM EDT until October 19 at 9:00AM EDT by NWS Wilmington OH |
| Area desc | Wayne; Fayette; Union; Franklin; Ripley; Dearborn; Ohio; Switzerland; Carroll; Gallatin; Boone; Kenton; Campbell; Owen; Grant; Pendleton; Bracken; Robertson; Mason; Lewis; Hardin; Mercer; Auglaize; Darke; Shelby; Logan; Union; Delaware; Miami; Champaign; Clark; Madison; Franklin; Licking; Preble; Montgomery; Greene; Fayette; Pickaway; Fairfield; Butler; Warren; Clinton; Ross; Hocking; Hamilton; Clermont; Brown; Highland; Adams; Pike; Scioto |
| Effective | October 18, 2026, 1:22 p.m. |
| Expires | October 19, 2026, 5:00 a.m. |
| Sender name | NWS Wilmington OH |
| Instruction | Take steps now to protect tender plants from the cold. |
Published by National Weather Service (api.weather.gov). This is the agency's public filing as The Lantern received it, shown with its fields named in plain English.