Alert archive / Indiana / Severe Thunderstorm Watches in 2021
Severe Thunderstorm Watch 325
The Storm Prediction Center issued this severe thunderstorm watch at Jun 26, 2021, 7:47 PM EDT for 8 counties in Indiana. It was in force for 3 hr.
The area
The outline as issued.
The facts
- Issued
- Jun 26, 2021, 7:47 PM EDT (23:47 UTC)
- Expired
- Jun 26, 2021, 10:20 PM EDT
- In force
- 3 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 1 in
- Strongest gust expected
- 55 kt
Counties Carroll County, IN, Clinton County, IN, Fountain County, IN, Montgomery County, IN, Parke County, IN, Tippecanoe County, IN, Vermillion County, IN, Warren County, IN
The radar
The Indianapolis radar (KIND), 64 km from the middle of the area, began a volume at 23:46 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
What SPC expected
The probabilities SPC published with the watch, for the watch area over its life.
- Two or more tornadoes
- 20%
- One or more EF2 to EF5 tornadoes
- 5%
- Ten or more severe wind reports
- 40%
- One or more gusts of 65 knots or more
- 5%
- Ten or more severe hail reports
- 20%
- One or more hailstones of 2 inches or more
- 5%
- Six or more combined severe hail and wind reports
- 70%
Warnings issued inside it
2 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 26, 8:21 PM EDT | Severe Thunderstorm Warning | IND | Fountain, Montgomery, Vermillion, Warren | 24 min |
| Jun 26, 8:42 PM EDT | Severe Thunderstorm Warning | IND | Fountain, Montgomery, Tippecanoe, Warren | 48 min |
Discussions around it
SPC mesoscale discussions over the same counties from four hours before the watch to its end.
The nearest sounding before it
Lincoln, IL (KILX), launched 12:00Z, 11.8 hours before the alert went out and 158 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 683 J/kg
- Mixed-layer CIN
- -28 J/kg
- Mixed-layer LCL
- 684 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- 263 m²/s²
- 0-3 km storm-relative helicity
- 229 m²/s²
- Significant tornado parameter
- 0.5
- Supercell composite
- 3.1
The text
As transmitted.
809 WWUS20 KWNS 262344 SEL5 SPC WW 262344 INZ000-270500- URGENT - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Watch Number 325 NWS Storm Prediction Center Norman OK 745 PM EDT Sat Jun 26 2021 The NWS Storm Prediction Center has issued a * Severe Thunderstorm Watch for portions of West-central Indiana * Effective this Saturday night and Sunday morning from 745 PM until 100 AM EDT. * Primary threats include... Scattered damaging wind gusts to 65 mph possible Isolated large hail events to 1 inch in diameter possible A tornado or two possible SUMMARY...Clusters of well-organized storms including bowing segments will continue east-northeastward into parts of west-central/north-central Indiana this evening. Damaging winds are the primary concern, but isolated hail and/or a brief tornado could also occur. Storms are likely to decrease in intensity into late evening and early in the overnight. The severe thunderstorm watch area is approximately along and 30 statute miles north and south of a line from 35 miles east of Lafayette IN to 40 miles southwest of Lafayette IN. For a complete depiction of the watch see the associated watch outline update (WOUS64 KWNS WOU5). PRECAUTIONARY/PREPAREDNESS ACTIONS... REMEMBER...A Severe Thunderstorm Watch means conditions are favorable for severe thunderstorms in and close to the watch area. Persons in these areas should be on the lookout for threatening weather conditions and listen for later statements and possible warnings. Severe thunderstorms can and occasionally do produce tornadoes. && OTHER WATCH INFORMATION...CONTINUE...WW 321...WW 322...WW 323...WW 324... AVIATION...A few severe thunderstorms with hail surface and aloft to 1 inch. Extreme turbulence and surface wind gusts to 55 knots. A few cumulonimbi with maximum tops to 500. Mean storm motion vector 24030. ...Guyer
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 25, 8:05 PM EDT | Mesoscale Discussion | SPC | Benton, Boone, Carroll, Cass, Clinton, Elkhart and 22 more | 55 min |
| Jun 25, 11:31 PM EDT | Mesoscale Discussion | SPC | Benton, Carroll, Cass, Clinton, Elkhart, Fountain and 19 more | 59 min |
| Jun 26, 12:45 PM EDT | Mesoscale Discussion | SPC | Jasper, Lake, Newton | 2 hr |
| Jun 26, 1:05 PM EDT | Tornado Watch | SPC | Benton, Cass, Elkhart, Fulton, Jasper, Kosciusko and 15 more | 9 hr |
| Jun 26, 1:48 PM EDT | Mesoscale Discussion | SPC | LaPorte, Saint Joseph | 57 min |
| Jun 26, 3:47 PM EDT | Mesoscale Discussion | SPC | Elkhart, Jasper, Kosciusko, LaGrange, Lake, LaPorte and 7 more | 118 min |
| Jun 26, 7:08 PM EDT | Mesoscale Discussion | SPC | Allen, Benton, Boone, Carroll, Cass, Clinton and 31 more | 67 min |
Nearby
Severe Thunderstorm Watches in Indiana, 2021Every severe thunderstorm watch in 2021
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.