Alert archive / Indiana / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 75, NWS Indianapolis, IN
NWS Indianapolis, IN issued this severe thunderstorm warning at Aug 25, 2021, 11:45 AM EDT for Hendricks County, Indiana. It was in force for 30 min. 6 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Aug 25, 2021, 11:45 AM EDT (15:45 UTC)
- Expired
- Aug 25, 2021, 12:15 PM EDT
- In force
- 30 min
- Issued by
- NWS Indianapolis, IN
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
County Hendricks County, IN
The radar
The Indianapolis radar (KIND), 15 km from the middle of the area, began a volume at 15:46 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 was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Aug 25, 12:00 PM EDT | TSTM WND DMG | 1 W Avon, IN | A TREE WAS BLOWN DOWN NEAR AVON INTERMEDIATE WEST AND ACCOMPANIED BY DIME SIZE HAIL AND TORRENTIAL RAIN. REPORT WITH PHOTO RECEIVED VIA FACEBOOK. TIME IS APPROXIMATED. |
| Aug 25, 12:00 PM EDT | TSTM WND DMG | 2 S Avon, IN | REPORT RECEIVED THROUGH TWITTER OF A PARTIAL CEILING COLLAPSE IN A CLASSROOM AT AVON HIGH SCHOOL DUE TO HEAVY RAIN AROUND NOON TIME. TIME ESTIMATED. |
| Aug 25, 12:00 PM EDT | TSTM WND DMG | Avon, IN | TREE LIMBS WERE BLOWN DOWN. SOME FLOODING. APPROXIMATE LOCATION AND TIME. REPORTED RECEIVED FROM TWITTER. |
| Aug 25, 12:05 PM EDT | TSTM WND DMG | 1 Wnw Avon, IN | CORRECTS PREVIOUS TSTM WND DMG REPORT FROM AVON TO BETTER DOCUMENT LOCATION. BETWEEN ROCKVILLE ROAD AND 100 NORTH JUST WEST OF STATE ROAD 267 A PORTION OF A FENCE AND TREES WERE BLOWN DOWN. FENCING BLEW 30 PLUS FEET. TIME ESTIMATED. |
| Aug 25, 12:05 PM EDT | TSTM WND DMG | Avon, IN | BLOWN OVER FENCES AND TREES. FENCING BLOWN 30 PLUS FEET. ROUGH APPROXIMATION OF LOCATION. TIME ESTIMATED. |
| Aug 25, 12:10 PM EDT | TSTM WND DMG | Plainfield, IN | TREE LIMBS WERE BLOWN DOWN. LOCATION AND TIME ESTIMATED. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Lincoln, IL (KILX), launched 12:00Z, 3.8 hours before the alert went out and 189 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
- 1708 J/kg
- Mixed-layer CIN
- -135 J/kg
- Mixed-layer LCL
- 1029 m above ground
- 0-6 km bulk shear
- 9 kt
- 0-1 km storm-relative helicity
- 132 m²/s²
- 0-3 km storm-relative helicity
- 170 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 4.9
The text
As transmitted.
445 WUUS53 KIND 251545 SVRIND INC063-251615- /O.NEW.KIND.SV.W.0075.210825T1545Z-210825T1615Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Warning National Weather Service Indianapolis IN 1145 AM EDT Wed Aug 25 2021 The National Weather Service in Indianapolis has issued a * Severe Thunderstorm Warning for... Southeastern Hendricks County in central Indiana... * Until 1215 PM EDT. * At 1144 AM EDT, a severe thunderstorm was located near Danville, or 15 miles west of Indianapolis, moving south at 15 mph. HAZARD...60 mph wind gusts. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees. * This severe thunderstorm will be near... Plainfield around 1150 AM EDT. Other locations in the path of this severe thunderstorm include Clayton. This includes Interstate 70 between mile markers 64 and 68. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. && LAT...LON 3966 8657 3979 8650 3978 8633 3964 8633 TIME...MOT...LOC 1544Z 005DEG 13KT 3976 8644 HAIL THREAT...RADAR INDICATED MAX HAIL SIZE...<.75 IN WIND THREAT...RADAR INDICATED MAX WIND GUST...60 MPH $$ AU/AW
2 follow-up statements
370 WWUS53 KIND 251601 SVSIND Severe Weather Statement National Weather Service Indianapolis IN 1201 PM EDT Wed Aug 25 2021 INC063-251615- /O.CON.KIND.SV.W.0075.000000T0000Z-210825T1615Z/ Hendricks IN- 1201 PM EDT Wed Aug 25 2021 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1215 PM EDT FOR SOUTHEASTERN HENDRICKS COUNTY... At 1200 PM EDT, a severe thunderstorm was located near Plainfield, or 16 miles west of Indianapolis, moving south at 10 mph. HAZARD...60 mph wind gusts. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees. This severe storm will be near... Avon around 1205 PM EDT. Other locations in the path of this severe thunderstorm include Plainfield. This includes Interstate 70 between mile markers 65 and 68. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room. && LAT...LON 3968 8655 3979 8650 3978 8633 3964 8633 TIME...MOT...LOC 1600Z 270DEG 13KT 3971 8644 HAIL THREAT...RADAR INDICATED MAX HAIL SIZE...<.75 IN WIND THREAT...RADAR INDICATED MAX WIND GUST...60 MPH $$ AU/AW
412
WWUS53 KIND 251612
SVSIND
Severe Weather Statement
National Weather Service Indianapolis IN
1212 PM EDT Wed Aug 25 2021
INC063-251621-
/O.EXP.KIND.SV.W.0075.000000T0000Z-210825T1615Z/
Hendricks IN-
1212 PM EDT Wed Aug 25 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN HENDRICKS COUNTY
WILL EXPIRE AT 1215 PM EDT...
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning will be allowed to expire. However gusty
winds are still possible with this thunderstorm.
LAT...LON 3968 8655 3979 8650 3978 8633 3964 8633
TIME...MOT...LOC 1611Z 005DEG 13KT 3968 8644
$$
AU/AWThe office that day
Everything else NWS Indianapolis, IN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 24, 11:54 PM EDT | Special Weather Statement | IND | Fountain, Warren | 36 min |
| Aug 25, 10:58 AM EDT | Special Weather Statement | IND | Marion | 32 min |
| Aug 25, 11:00 AM EDT | Special Weather Statement | IND | Morgan | 30 min |
| Aug 25, 11:10 AM EDT | Areal Flood Warning | IND | Putnam | 3 hr |
| Aug 25, 11:19 AM EDT | Special Weather Statement | IND | Marion | 26 min |
| Aug 25, 11:27 AM EDT | Special Weather Statement | IND | Hendricks | 18 min |
| Aug 25, 11:41 AM EDT | Special Weather Statement | IND | Hendricks | 19 min |
| Aug 25, 11:49 AM EDT | Special Weather Statement | IND | Johnson | 26 min |
| Aug 25, 11:56 AM EDT | Flash Flood Warning | IND | Hendricks, Marion | 4 hr |
| Aug 25, 12:05 PM EDT | Severe Thunderstorm Warning | IND | Johnson, Morgan, Shelby | 25 min |
| Aug 25, 12:24 PM EDT | Severe Thunderstorm Warning | IND | Bartholomew, Brown, Johnson, Shelby | 36 min |
| Aug 25, 2:00 PM EDT | Special Weather Statement | IND | Lawrence | 30 min |
| Aug 25, 2:08 PM EDT | Areal Flood Warning | IND | Owen, Putnam | 3 hr |
| Aug 25, 2:29 PM EDT | Special Weather Statement | IND | Lawrence | 31 min |
| Aug 25, 3:03 PM EDT | Special Weather Statement | IND | Martin | 27 min |
| Aug 25, 4:02 PM EDT | Areal Flood Warning | IND | Daviess, Greene, Knox, Sullivan | 3 hr |
| Aug 25, 4:29 PM EDT | Special Weather Statement | IND | Sullivan | 31 min |
Nearby
Severe Thunderstorm Warnings in Indiana, 2021Every severe thunderstorm warning 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.