On the September 30th release of the drought monitor D2 (Severe drought) conditions expanded into Carroll and Clinton counties from Illinois as a result of a stretch of dry weather that began in early August. D2 conditions also expanded across all of Howard county and northwest portions of Tipton.
Every event with a place to put it; 2 filed by county or forecast zone are drawn at its center, in a lighter ring. 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 IND wrote it up.
On the September 30th release of the drought monitor D2 (Severe drought) conditions expanded into Carroll and Clinton counties from Illinois as a result of a stretch of dry weather that began in early August. D2 conditions also expanded across all of Howard county and northwest portions of Tipton. These conditions continued into October.
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 Indianapolis, IN wrote its last area forecast discussion before the first event at Sep 30, 4:50 AM EST, 2 hours 10 minutes earlier. Its key messages:
Area Forecast Discussion National Weather Service Indianapolis IN 550 AM EDT Tue Sep 30 2025 .KEY MESSAGES... - Dry with unseasonably warm afternoons this week - Patchy fog possible during the overnights in Wabash River Valley - Drought persists and worsens across Central Indiana into October && .SHORT TERM (Today and tonight)... Issued at 215 AM EDT Tue Sep 30 2025 This mundane weather pattern is still expected to continue through the short term, with a large synoptic ridge along, of which has been reinforced by emergence of warm-core lows over the atlantic and strong AVA over the Eastern Canadian Provinces. This large upper level ridge is the primary culprit for the well above normal temperatures we have been experiencing. That said, a weak surface ridge does develop to the south, creating a weak pressure gradient and NE flow. In response, 850mb temperatures will likely cool a degree or 2 C, lowering the overall surface heating potential. Expect highs this afternoon to top off in the mid 80s, with a slight temperature gradient from east to west. Also continuing is the diurnal patchy dense fog threat due to the same dry, clear and calm conditions creating large diurnal curves. However, without a synoptically induced low level moisture source, fog should be confined to near rivers and in agricultural areas / farm fields. && .LONG TERM (Wednesday through Monday)... Issued at 215 AM EDT Tue Sep 30 2025 Highly amplified and long wave quasi-stacked ridge will be the dominant feature across the eastern two-thirds of North America for most of the period. Highest H500 heights parked over Indiana through the midweek...will slide to the Mid-Atlantic this weekend, and most likely to the southeastern CONUS by the end of the long term. Very large surface high pressure aligned from eastern Canada down into the eastern US on Wednesday...will meanwhile shift southward to the US Eastern Seaboard. The local region will therefore slide from the center to the western portions of the stacked ridge...which will provide consistent dry and rain-free conditions through at least Saturday as any noteworthy return flow of better deep moisture is directed to our west. Not surprisingly, latest guidance is trending slightly greater diurnal ranges...with low 80s east and now mid-80s expanding from the Wabash Valley from the mid-week to most western zones Friday and onward. Overnight lows...which may bring upper 40s northeast Wednesday night...will be closer to early October normals, exhibiting a slight upward trend through the 50s into early next week. The forecast highs at Indianapolis Friday and Saturday are 84F and 83F degrees...the corresponding normal high is 71F...the corresponding record high is 90F both days. Daily minimum relative humidity values mainly around 30-40 percent should generally thwart fire weather concerns through the first half of the period...although moderate afternoon return flow gusts this weekend, coupled with continued lack of rain, may present marginal fire weather conditions, especially northwest of Indianapolis. Stray showers may return to central Indiana at the end of the long term if a weak disturbance embedded in the ridge can twirl north from the Gulf coast towards the Ohio Valley. However, confidence here is too low to adjust from the Blend's POPs around 5-10 percent. && .AVIATION (12Z TAF Issuance)... Issued at 546 AM EDT Tue Sep 30 2025 Impacts: - Brief MVFR conditions in patchy fog at KHUF and KLAF Discussion: Initially, patchy ground fog will be possible near KHUF and KLAF, but any fog that does develop will quickly dissipate, with VFR conditions prevailing. Clear skies are expected today outside of occasional cirrus clouds. Winds will generally be northeast through the period, with relatively light winds under 5 kts this morning before increasing during the afternoon to between 6-8kt. Overnight winds may become more northerly and approach calm as the PBL decouples. && .IND WATCHES/WARNINGS/ADVISORIES... None. && SHORT TERM...Updike LONG TERM...AGM AVIATION...Updike
Hazardous Weather Outlook National Weather Service Indianapolis IN 316 AM EDT Tue Sep 30 2025 INZ021-028>031-035>049-051>057-060>065-067>072-010730- Carroll-Warren-Tippecanoe-Clinton-Howard-Fountain-Montgomery-Boone- Tipton-Hamilton-Madison-Delaware-Randolph-Vermillion-Parke-Putnam- Hendricks-Marion-Hancock-Henry-Vigo-Clay-Owen-Morgan-Johnson-Shelby- Rush-Sullivan-Greene-Monroe-Brown-Bartholomew-Decatur-Knox-Daviess- Martin-Lawrence-Jackson-Jennings- 316 AM EDT Tue Sep 30 2025 This hazardous weather outlook is for central Indiana. .DAY ONE...Today and Tonight. No hazardous weather is expected at this time. .DAYS TWO THROUGH SEVEN...Wednesday through Monday. No hazardous weather is expected at this time. .SPOTTER INFORMATION STATEMENT... Spotter activation is not anticipated. && More information, along with other weather, hydrological and climate information can be found at http://weather.gov/ind
The national radar mosaic for the moment the first event began.
2 drought. Local standard time, as filed.
Rainfall amounts of only 1.22 inches over the month of September combined with amounts of less than an inch in August caused Severe Drought intensity to begin on September 30, 2025 across most of Carroll County. D2 conditions then continued into October.
Rainfall amounts of only 1 to 1.3 inches over the month of September combined with amounts of 1 to 2.5 inches in August caused Severe Drought intensity to begin on September 30, 2025 in northeast Clinton County. D2 conditions then continued into October.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Indiana in 2025Every state in 2025This day in weather historyWarnings in Indiana, September 2025
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: 1290249, 1290250.