During the late afternoon and early evening of the 4th, slow moving thunderstorms produced heavy rainfall and flooding to portions of west-central and southwest central Indiana. Flooding was most significant in southeastern Vigo County near Blackhawk where a video showed flash flooding of a field and nearby road.
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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.
During the late afternoon and early evening of the 4th, slow moving thunderstorms produced heavy rainfall and flooding to portions of west-central and southwest central Indiana. Flooding was most significant in southeastern Vigo County near Blackhawk where a video showed flash flooding of a field and nearby road. Later in the day, flash flooding also occurred in Daviess County and Lawrence County with two major roads flooded. Total rainfall estimates were as high as 3-5 inches in these areas.
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 Aug 4, 1:34 PM EST, 2 hours 11 minutes earlier. Its key messages:
Area Forecast Discussion National Weather Service Indianapolis IN 234 PM EDT Mon Aug 4 2025 .KEY MESSAGES... - Showers and storms producing localized flooding focused across the lower Wabash Valley through early this evening - Daily chances for showers and storms continues through Wednesday then decrease for the second half of this week - Progressively warmer and more humid conditions by mid to late week continuing into the weekend && .SHORT TERM (This Evening through Tuesday)... Issued at 234 PM EDT Mon Aug 4 2025 Convection continues to move across portions of the lower Wabash Valley this afternoon on the eastern flank of a near stagnant inverted surface trough. Storms have been sluggish in their movement and have seen some gauge reports in excess of 3 inches over parts of Vigo County to the southeast of KHUF since midday. Localized flooding remains a concern here in the short term and across much of the far southwest part of the forecast area with convection regenerating and moving N/NW. 18Z temperatures were in the mid 70s to low 80s over all but in the vicinity of KHUF where the heavier rain has kept temps closer to 70. The inverted surface trough extending from the lower Wabash Valley southwest into the lower Mississippi Valley will remain a prominent feature into Tuesday as it slowly weakens over the region. A weak trough aloft will extend into the Ohio Valley as well over the next 24 hours...and both of these features will contribute to a threat for isolated to scattered convection over the entire forecast area extending into Tuesday. For the rest of the afternoon...convection is expected to remain confined to areas south and west of I-74 with a focus across the lower Wabash Valley between KHUF and Vincennes where current mesoanalysis shows a bullseye of deeper moisture pooling along the eastern flank of the trough. PWATs have risen to 1.6 to 1.7 inches supporting the threat for higher rainfall rates likely to continue over the next several hours in this zone. Convection also is not moving fast which is enabling heavier rainfall in short periods as additional showers generate and train over the same spots. Convection should decrease in coverage this evening. Low level moisture drops off quickly northeast across the forecast area with residual dry air from high pressure to the northeast continuing to impinge on further expansion of showers into more of the forecast area. This should continue into the early evening but moisture advection will gradually expand northward tonight with the potential for isolated showers and thunderstorms spreading across the remainder of the forecast area as a result. Even as the inverted trough weakens Tuesday...low level moisture and CAPE values rising to around 1500-2000 J/KG will be enough to generate another round of isolated to scattered convection focused especially during the afternoon at peak heating. Heavy downpours and localized flooding from slow moving storms will remain the primary threat. Temps...with the continued influx of low level moisture...lows tonight will hold in the low to mid 60s. There should be less in the way of cloud coverage on Tuesday outside of convection which should aid in highs slightly warmer than today in the mid 80s for most. && .LONG TERM (Tuesday Night through Monday)... Issued at 234 PM EDT Mon Aug 4 2025 Strong ridging aloft will remain anchored over the southern Rockies and High Plains while a weakness in the flow lingers downstream across the eastern Midwest and Ohio Valley through midweek. Isolated to scattered afternoon and evening convection will persist on Wednesday across the region but as the weakness diminishes and ridging expands east late week...convective chances will decrease into the weekend along with an increase in heat and humidity. A more focused and widespread threat for convection will arrive by the end of the weekend and into early next week in response to an approaching cold front dropping out of the upper Midwest and becoming nearly stationary over the region. Tuesday Night and Wednesday A weak but persistent level of troughiness aloft on the lee side of the ridge will remain across the Ohio Valley through Wednesday gradually shifting eastward. This will maintain isolated to scattered convection across especially the southeast half of the forecast area into Wednesday with a continued risk for slow moving localized downpours that generally remain subsevere during peak heating. However any stronger cell with a collapsing downdraft will carry a localized gusty wind threat. Highs will climb into the mid 80s Wednesday with humidity levels slowly ticking up as well as progressively deeper moisture advects into the region. Wednesday Night through Monday Heights aloft will respond to an expansion of the ridging to our west late this week into the weekend resulting in a resumption of the late July hot and humid regime albeit with temperatures and humidity levels not quite as high as experienced last week. Highs will rise into the upper 80s and lower 90s Friday through Sunday with dewpoints near or above 70 degrees which could bring peak heat indices into the upper 90s over the weekend. The presence of deep low level moisture and ample instability will keep the risk for isolated afternoon and evening convection in play but overall daily coverage will decrease with the development of a mid level cap and the loss of forcing aloft. By late weekend into early next week...a cold front will shift south towards the region. While this would provide increased forcing aloft for more widespread and robust convection... there remain hints in the long range guidance at the front becoming nearly stationary to our north across the lower Great Lakes through much of next week as it runs into the ridging further south. This would keep a warm...humid and unsettled pattern across the Ohio Valley with any substantial cooldown coming from a frontal passage being delayed until late next week at the earliest. && .AVIATION (18Z TAF Issuance)... Issued at 1238 PM EDT Mon Aug 4 2025 Impacts: - Showers may impact KBMG and KHUF through the afternoon with brief restrictions possible - Patchy fog early Tuesday at KBMG and KHUF Discussion: A persistent area of showers with embedded thunder continues to impact portions of the lower Wabash Valley early this afternoon. This will affect KHUF through the next few hours and may briefly impact KBMG as well. Showers will diminish this evening and become much more isolated. VFR ceilings are expected tonight although patchy fog and MVFR stratus will be possible in the predawn hours through daybreak Tuesday at both KBMG and KHUF where moisture is deeper and rain has fallen today. Additional isolated to scattered convection is expected on Tuesday and may impact all four of the terminals...but confidence remains too low for a mention in the forecast. E/SE winds are expected this afternoon becoming light tonight and Tuesday morning. && .IND WATCHES/WARNINGS/ADVISORIES...None. && SHORT TERM...Ryan LONG TERM...Ryan AVIATION...Ryan
Hazardous Weather Outlook National Weather Service Indianapolis IN 238 PM EDT Mon Aug 4 2025 INZ021-028>031-035>049-051>057-060>065-067>072-051000- 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- 238 PM EDT Mon Aug 4 2025 This hazardous weather outlook is for central Indiana. .DAY ONE...Through Tonight. Scattered showers and storms will continue into the early evening focused especially over the lower Wabash Valley near and south of Terre Haute. Localized flooding and lightning will be main threats. Isolated storms remain possible over all of central Indiana tonight. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday. Daily chances for afternoon showers and storms continues Tuesday and Wednesday with much lower chances through the rest of the week into Saturday. A better chance for scattered storms will arrive Sunday into early next week. .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 Indianapolis radar (KIND), 100 km away, was scanning. The volume nearest the first event began at 20:43 UTC.
3 flash flood, 2 flood. Local standard time, as filed.
A video displayed extensive flowing water over a field and road. Nearby, additional photos showed flooding over roads and up to farm structures. There were no nearby rainfall measurements, but radar estimates of over 3 inches fell in the area.
Several streets were flooded in the town of Loogootee due to heavy rainfall. A nearby station reported 3.50 inches.
Several streets were flooded in Vincennes due to heavy rainfall. A nearby station reported 2.47 inches.
A picture indicated flooding along US Highway 50 west of Montgomery. The nearest rainfall report was 2.59 inches, but radar estimates were higher at this location.
Indiana Route 54 was flooded by heavy rain. There were no nearby rainfall reports, but radar estimates of 2.5-4.0 inches fell in the area.
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, August 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: 1270256, 1270259, 1270260, 1270257, 1270258.