A cluster of thunderstorms driven by an upper level disturbance, tracked across the region and produced a period of heavy rain and some flooding.
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The episode as NWS ILN wrote it up.
A cluster of thunderstorms driven by an upper level disturbance, tracked across the region and produced a period of heavy rain and some flooding.
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 Aug 1, 8:40 AM EST, 3 hours 27 minutes earlier.
Area Forecast Discussion National Weather Service Wilmington OH 940 AM EDT MON AUG 1 2016 .SYNOPSIS... A weak upper level disturbance will result in a slight chance of thunderstorms this afternoon along and south of the Ohio River. Another upper level disturbance will bring a better chance of thunderstorms to the entire region Wednesday into Thursday. Highs will be in the mid to upper 80s through mid week. && .NEAR TERM /UNTIL 6 PM THIS EVENING/... Updated forecast to account for persistent small cluster of rain/storms progressing steadily across scntl Indiana with no real signs of weakening or slowing down. Regional radar mosaics indicate some semblance of larger scale circulation /MCV/ driving this feature and this should spread across northern KY and along the Ohio River later this morning into the afternoon. Recent runs of HRRR-EXP and operational HRRR...as well as various parameterized guidance also showing potential for diurnally forced shra/tsra developing ~17Z across a good portion of the ILN CWA and continuing thru the afternoon. This is corroborated by rather high SREF pops /01.03Z run/ and fits forcing signals seen by low amplitude shortwave trough dropping through the lower Ohio Valley accompanied by some weak right entrance region forcing in a weak jet streak crossing Ohio this afternoon. Some semblance of a weak bifurcated branch of the low level feeding this forcing signal with modest moisture transport. Increased rain chances most areas today...most notably in northern KY. Temps dropped just a bit with thicker cirrus spreading toward the area. && .SHORT TERM /6 PM THIS EVENING THROUGH WEDNESDAY/... Suppose a few showers or thunderstorms could linger into early evening across our far southeast but as we lose the diurnal enhancement, expect dry conditions overnight tonight. We will then remain in a northwest flow pattern aloft through mid week. Tuesday looks to be dry as the models have pretty much backed off on any short wave energy dropping down into our area through the afternoon. However, there is still quite a bit of uncertainty among the models in regard to short wave energy/possible MCS feature dropping down into our area later Tuesday night into Wednesday. Given the uncertainty, will just allow for some slight chance pops to work into the northwest late Tuesday night and then just keep some chance pops for the entire area through the day on Wednesday. Highs both Tuesday and Wednesday will be in the mid to upper 80s. && .LONG TERM /WEDNESDAY NIGHT THROUGH SUNDAY/... Thursday is looking like it will be a pop-up convection day. The region will be warm sectored and CAPES will be a few thousand J/kg. Temperatures will warm to around 90 for highs on Thursday. On Friday a cdfnt will be dropping through the Great Lakes, but the atmosphere will be in a similar state to Thursday. Scattered thunderstorms should pop again on Friday. Highs on Friday should be in the upper 80s. The cdfnt will drop down into the fa Friday night. Thunderstorms should accompany the front. The front will still be located in srn OH/IN Saturday morning. This will mean that pcpn chances will linger across the srn counties. Temperatures will be cooler, with highs in the mid to upper 80s. On Sunday, will lean towards the EC solution which builds a dry high pressure in. The GFS brings return pcpn back too quickly. Went with highs in the lower to mid 80s. && .AVIATION /14Z MONDAY THROUGH FRIDAY/... Surface high pressure is currently just off to the north of the area this morning with light winds and MVFR/VFR cigs. During the afternoon today a shortwave will cross the terminals with most of convection forecasted to be off south of the terminals. Currently there is ongoing convection occurring in southern Illinois and the HRRR has most of this weakening and passing just south of CVG. Have followed this solution and left the mention of precipitation out of the TAFs. Tonight into Tuesday morning surface high pressure will pull east bringing another night of near calm winds. Mostly VFR expected through the issuance. OUTLOOK...Chance of thunderstorms Wednesday and Thursday. && .ILN WATCHES/WARNINGS/ADVISORIES... OH...None. KY...None. IN...None. && SYNOPSIS...JGL NEAR TERM...Binau SHORT TERM...JGL LONG TERM...Sites AVIATION...Haines
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE WILMINGTON OH 458 AM EDT MON AUG 1 2016 INZ050-058-059-066-073>075-080-KYZ089>100-OHZ026-034-035-042>046- 051>056-060>065-070>074-077>082-088-021000- WAYNE-FAYETTE IN-UNION IN-FRANKLIN IN-RIPLEY-DEARBORN-OHIO- SWITZERLAND-CARROLL-GALLATIN-BOONE-KENTON-CAMPBELL-OWEN-GRANT- PENDLETON-BRACKEN-ROBERTSON-MASON-LEWIS-HARDIN-MERCER-AUGLAIZE-DARKE- SHELBY-LOGAN-UNION OH-DELAWARE-MIAMI-CHAMPAIGN-CLARK-MADISON- FRANKLIN OH-LICKING-PREBLE-MONTGOMERY-GREENE-FAYETTE OH-PICKAWAY- FAIRFIELD-BUTLER-WARREN-CLINTON-ROSS-HOCKING-HAMILTON-CLERMONT-BROWN- HIGHLAND-ADAMS-PIKE-SCIOTO- 458 AM EDT MON AUG 1 2016 THIS HAZARDOUS WEATHER OUTLOOK IS FOR EAST CENTRAL INDIANA...SOUTHEAST INDIANA...NORTHEAST KENTUCKY...NORTHERN KENTUCKY...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...TUESDAY THROUGH SUNDAY. THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE WILMINGTON OH 719 AM EDT MON AUG 1 2016 OHZ026-034-035-043>046-011300- HARDIN-MERCER-AUGLAIZE-SHELBY-LOGAN-UNION OH-DELAWARE- INCLUDING THE CITIES OF...KENTON...ADA...CELINA...COLDWATER... WAPAKONETA...ST. MARYS...SIDNEY...BELLEFONTAINE...MARYSVILLE... DELAWARE 719 AM EDT MON AUG 1 2016 ...PATCHY DENSE FOG THIS MORNING... PATCHY DENSE FOG WITH VISIBILITIES RESTRICTED TO A QUARTER OF A MILE OR LESS WILL BE POSSIBLE ACROSS WEST CENTRAL OHIO THROUGH 9 AM. IF TRAVELING THIS MORNING...USE CAUTION AND BE PREPARED FOR RAPID CHANGES IN VISIBILITY OVER A SHORT DISTANCE. BINAU
The national radar mosaic for the moment the first event began.
1 flood. Local standard time, as filed.
A mudslide closed State Route 56 from Green Valley Road to Spring Branch Road.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Indiana in 2016Every state in 2016This day in weather historyWarnings in Indiana, August 2016
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: 641515.