Alert archive / Indiana / Severe Thunderstorm Warnings in 2017
Severe Thunderstorm Warning 89, NWS Indianapolis, IN
NWS Indianapolis, IN issued this severe thunderstorm warning at May 20, 2017, 7:30 PM EDT for Boone County, Clinton County, Montgomery County, Indiana. It was in force for 45 min. 1 report 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
- May 20, 2017, 7:30 PM EDT (23:30 UTC)
- Expired
- May 20, 2017, 8:15 PM EDT
- In force
- 45 min
- Issued by
- NWS Indianapolis, IN
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Boone County, IN, Clinton County, IN, Montgomery County, IN
The radar
The Indianapolis radar (KIND), 62 km from the middle of the area, began a volume at 23:34 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 |
|---|---|---|---|
| May 20, 7:47 PM EDT | TORNADO | 3 N Thorntown, IN | POSSIBLE TORNADO. |
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, 11.5 hours before the alert went out and 163 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 734 m above ground
- 0-6 km bulk shear
- 42 kt
- 0-1 km storm-relative helicity
- 347 m²/s²
- 0-3 km storm-relative helicity
- 347 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.3
The text
As transmitted.
599
WUUS53 KIND 202330
SVRIND
INC011-023-107-210015-
/O.NEW.KIND.SV.W.0089.170520T2330Z-170521T0015Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Indianapolis IN
730 PM EDT SAT MAY 20 2017
The National Weather Service in Indianapolis has issued a
* Severe Thunderstorm Warning for...
Southwestern Clinton County in central Indiana...
Northwestern Boone County in central Indiana...
Northeastern Montgomery County in west central Indiana...
* Until 815 PM EDT.
* At 730 PM EDT, a severe thunderstorm was located 8 miles northeast
of Crawfordsville, moving northeast at 15 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage
to roofs, siding, and trees.
* Locations impacted include...
Darlington and Colfax.
This includes Interstate 65 between mile markers 150 and 155.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4019 8654 4004 8674 4009 8683 4022 8677
4021 8670 4027 8669
TIME...MOT...LOC 2330Z 221DEG 13KT 4011 8676
HAIL...1.00IN
WIND...60MPH
$$
PUMA2 follow-up statements
770
WWUS53 KIND 202347
SVSIND
Severe Weather Statement
National Weather Service Indianapolis IN
747 PM EDT SAT MAY 20 2017
INC107-202356-
/O.CAN.KIND.SV.W.0089.000000T0000Z-170521T0015Z/
Montgomery IN-
747 PM EDT SAT MAY 20 2017
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN MONTGOMERY COUNTY
IS CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
the warned area. Therefore, the warning has been cancelled.
LAT...LON 4027 8669 4019 8654 4009 8668 4010 8670
4023 8670
TIME...MOT...LOC 2346Z 228DEG 21KT 4015 8668
$$
INC011-023-210015-
/O.CON.KIND.SV.W.0089.000000T0000Z-170521T0015Z/
Clinton IN-Boone IN-
747 PM EDT SAT MAY 20 2017
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 815 PM EDT
FOR SOUTHWESTERN CLINTON AND NORTHWESTERN BOONE COUNTIES...
At 746 PM EDT, a severe thunderstorm was located 12 miles southwest
of Frankfort, moving northeast at 25 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
Locations impacted include...
Colfax.
This includes Interstate 65 between mile markers 151 and 155.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4027 8669 4019 8654 4009 8668 4010 8670
4023 8670
TIME...MOT...LOC 2346Z 228DEG 21KT 4015 8668
HAIL...1.00IN
WIND...60MPH
$$
PUMA769
WWUS53 KIND 210005
SVSIND
Severe Weather Statement
National Weather Service Indianapolis IN
805 PM EDT SAT MAY 20 2017
INC011-023-210015-
/O.EXP.KIND.SV.W.0089.000000T0000Z-170521T0015Z/
Clinton IN-Boone IN-
805 PM EDT SAT MAY 20 2017
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN CLINTON AND
NORTHWESTERN BOONE COUNTIES WILL EXPIRE AT 815 PM EDT...
The storm which prompted the warning has moved out of the area.
Therefore the warning will be allowed to expire.
LAT...LON 4027 8669 4019 8654 4009 8668 4010 8670
4023 8670
TIME...MOT...LOC 0005Z 221DEG 13KT 4020 8662
$$
PUMAThe office that day
Everything else NWS Indianapolis, IN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 20, 7:39 PM EDT | Tornado Warning | IND | Boone, Clinton | 21 min |
| May 20, 7:55 PM EDT | Tornado Warning | IND | Clinton | 35 min |
Nearby
Severe Thunderstorm Warnings in Indiana, 2017Every severe thunderstorm warning in 2017
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.