Rainfall across the region caused rises on area streams and creeks.
Every event with a place to put it. 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.
Rainfall across the region caused rises on area streams and creeks.
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 Dec 18, 9:27 AM EST, 33 minutes earlier.
AREA FORECAST DISCUSSION National Weather Service Wilmington OH 927 AM EST Sat Dec 18 2021 .SYNOPSIS... Rain will continue as a low pressure system crosses the area today. High pressure, dry conditions, and seasonable temperatures return Sunday. && .NEAR TERM /UNTIL 6 PM THIS EVENING/... The center of low pressure was located near east central Indiana this morning. Winds have slackened off near the vicinity of the low track, which has resulted in areas of fog, some locally dense, across east central Indiana, southwest Ohio, and northern Kentucky. An SPS has been issued for this region to highlight the locally dense fog. Visibilities should improve as the low moves east and winds pick up from the southwest and west. Before then, some lower visibilites may make there way east (such as central and south central Ohio). Will continue to monitor to see if the SPS has to be issued farther to the east. Otherwise, previous weather elements are still on track from previous forecast. Previous discussion ---> A low pressure system tracks northeast across the forecast area today, continuing the rain until this evening. In the warm sector to the southeast, temperatures warm to the low 60s while the northwest will see little change in temperatures, only warming to near 40. With the passage of the cold front late this afternoon, temperatures begin dropping and we could see some gusts of 20-25mph across the area. && .SHORT TERM /6 PM THIS EVENING THROUGH 6 PM SUNDAY/... Any lingering rain in the southeast will clear out tonight with the passage of the cold front. With northerly flow and cold air advection on Sunday, can expect a low around freezing in the morning before warming slightly to the mid- upper 30s during the day. Cloud cover, especially across the northeast, should be slow to clear out on Sunday. && .LONG TERM /SUNDAY NIGHT THROUGH FRIDAY/... Even with high pressure settling in over the Ohio Valley for the overnight, lingering low level saturation may help to keep stratocu around the area before clearing by Monday morning. Enough time should follow the clearing skies, allowing temperatures to quickly drop into the low to mid 20s. The high then shifts off to the Mid-Atlantic region as a weak and dry cold front moves through the Great Lakes and into the Ohio Valley Monday afternoon. As the front moves through Monday night, it quickly weakens and is replaced by another surface high pressure moving into the Great Lakes. Daytime highs Tuesday and Wednesday are in the 30s along and north of I-70s with low to mid 40s along the Ohio River. Low temperatures remain in the 20s. Another dry cold front moves through during the day on Wednesday before the next high pressure moves in for Wednesday night and Thursday. A supergeostrophic jet streak over the western-central US begins to move eastward toward the Ohio Valley Thursday, with a weak shortwave embedded within strong northwesterly upper level flow. This supports some weak mid-level ascent on Christmas Eve, however, low-level air is dry. Ensembles show a weak QPF footprint over the region, resulting in some slight chance/chance PoPs during the day and evening. Given temperatures in the mid 30s Friday morning, NBM precip type was indicating chances for mixed precipitation. With the weak forcing and dry low-levels, opted to limit accumulating precip to the afternoon and evening hours, with precip type all liquid. Felt it was best to not tease the possibility of snow on Christmas Eve, given the very low confidence at this time. && .AVIATION /15Z SATURDAY THROUGH WEDNESDAY/... IFR to LIFR ceilings will continue through the early part of the TAF period north of a warm front. This front will lift into the area as low pressure approaches. The low will bring more rain to the region which could drop visibilities to IFR for a time as well. However, with the northward movement of the front, expect LIFR ceilings to diminish. The low will track across the area during the day and as it moves east, precipitation will end. Winds will veer around to west and eventually northwest and strengthen a bit. Some gusts around 20 kt are possible. Visibilities will improve but IFR ceilings will persist. Expect ceilings to slowly lift to MVFR after 00Z. Those ceilings will continue through the rest of the TAF period. OUTLOOK...MVFR ceilings will likely linger into Sunday. && .ILN WATCHES/WARNINGS/ADVISORIES... OH...None. KY...None. IN...None. && SYNOPSIS...Cornelissen NEAR TERM...Cornelissen/Hickman SHORT TERM...Cornelissen LONG TERM...McGinnis AVIATION...
Hazardous Weather Outlook National Weather Service Wilmington OH 907 AM EST Sat Dec 18 2021 KYZ089-090-094>100-OHZ026-034-035-042>046-051>056-064-065-073-074- 079>082-088-191500- Carroll-Gallatin-Owen-Grant-Pendleton-Bracken-Robertson-Mason-Lewis- Hardin-Mercer-Auglaize-Darke-Shelby-Logan-Union OH-Delaware-Miami- Champaign-Clark-Madison-Franklin OH-Licking-Pickaway-Fairfield-Ross- Hocking-Brown-Highland-Adams-Pike-Scioto- 907 AM EST Sat Dec 18 2021 This Hazardous Weather Outlook is for Northeast Kentucky, Northern Kentucky, Central Ohio, South Central Ohio, Southwest Ohio and West Central Ohio. .DAY ONE...Today and tonight. The probability for widespread hazardous weather is low. .DAYS TWO THROUGH SEVEN...Sunday through Friday. No hazardous weather is expected at this time. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. INZ050-058-059-066-073>075-080-KYZ091>093-OHZ060>063-070>072-077-078- 191500- Wayne-Fayette IN-Union IN-Franklin IN-Ripley-Dearborn-Ohio- Switzerland-Boone-Kenton-Campbell-Preble-Montgomery-Greene- Fayette OH-Butler-Warren-Clinton-Hamilton-Clermont- 907 AM EST Sat Dec 18 2021 This Hazardous Weather Outlook is for East Central Indiana, Southeast Indiana, Northern Kentucky, Central Ohio, Southwest Ohio and West Central Ohio. .DAY ONE...Today and tonight. Areas of fog, locally dense in spots, will persist across the area through noon. Visibilities may lower to a quarter mile or less in a short period of time. .DAYS TWO THROUGH SEVEN...Sunday through Friday. Hazardous weather is not expected at this time. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time.
Special Weather Statement National Weather Service Wilmington OH 900 AM EST Sat Dec 18 2021 INZ050-058-059-066-073>075-080-KYZ091>093-OHZ060>063-070>072-077- 078-181700- Wayne-Fayette IN-Union IN-Franklin IN-Ripley-Dearborn-Ohio- Switzerland-Boone-Kenton-Campbell-Preble-Montgomery-Greene- Fayette OH-Butler-Warren-Clinton-Hamilton-Clermont- Including the cities of Richmond, Connersville, Liberty, West College Corner, Brookville, Batesville, Milan, Versailles, Lawrenceburg, Aurora, Rising Sun, Vevay, Florence, Burlington, Oakbrook, Covington, Erlanger, Independence, Newport, Alexandria, Eaton, Camden, Dayton, Kettering, Beavercreek, Fairborn, Xenia, Washington Court House, Hamilton, Middletown, Fairfield, Oxford, Mason, Lebanon, Springboro, Wilmington, Blanchester, Cincinnati, and Milford 900 AM EST Sat Dec 18 2021 ...LOCALLY DENSE FOG EXPECTED THIS MORNING... Areas of fog, locally dense in spots, will persist across the area through noon. Visibilities may lower to a quarter mile or less in a short period of time. Visibilities will improve once winds increase by the afternoon hours. Those traveling should use caution. Slow down. Allow more distance between you and the vehicle ahead of you. Have your headlights turned on.
The national radar mosaic for the moment the first event began.
1 flood. Local standard time, as filed.
A vehicle was swept away while driving through a low a water crossing along Bud Ballard Road, resulting in one fatality. F55VE.
As the offices recorded each death: direct deaths were caused by the weather itself, indirect ones by something it set in motion.
| Event | Date | Age | Sex | Where | Kind |
|---|---|---|---|---|---|
| Flood, Switzerland | 2021-12-18 | 55 | Female | Vehicle/Towed Trailer | Direct |
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Indiana in 2021Every state in 2021This day in weather historyWarnings in Indiana, December 2021
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: 990512.