Alert archive / Indiana / Special Weather Statements in 2021

Special Weather Statement, NWS Indianapolis, IN

May 7, 2021Shelby County, Indiana

NWS Indianapolis, IN issued this special weather statement at May 7, 2021, 7:13 PM EDT for Shelby County, Indiana. It was in force for 32 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
May 7, 2021, 7:13 PM EDT (23:13 UTC)
Expired
May 7, 2021, 7:45 PM EDT
In force
32 min
Issued by
NWS Indianapolis, IN

County Shelby County, IN

The radar

The Indianapolis radar (KIND), 56 km from the middle of the area, began a volume at 23:16 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.

The nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 12:00Z, 11.2 hours before the alert went out and 164 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.

Skew-T log-pSkew-T log-p diagram, Cncnati-Daytn, OH at 12:00Z on 2021-05-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Cncnati-Daytn, OH at 12:00Z on 2021-05-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -44 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
744 m above ground
0-6 km bulk shear
24 kt
0-1 km storm-relative helicity
-44 m²/s²
0-3 km storm-relative helicity
-39 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

879 
WWUS83 KIND 072313
SPSIND

Special Weather Statement
National Weather Service Indianapolis IN
713 PM EDT Fri May 7 2021

INZ055>057-072345-
Rush-Johnson-Shelby-
713 PM EDT Fri May 7 2021

...HAIL UP TO HALF AN INCH TO AFFECT CENTRAL SHELBY...SOUTHWESTERN 
RUSH AND NORTHEASTERN JOHNSON COUNTIES...

At 712 PM EDT, a strong thunderstorm was located 7 miles northeast of
Franklin, or 8 miles west of Shelbyville, moving southeast at 35 mph.

Half inch hail is possible with this storm.

Locations impacted include...
Shelbyville, Geneva, St. Paul, Fairland, Waldron, Moscow and
Boggstown.

This includes Interstate 74 between mile markers 110 and 123.
 
LAT...LON 3945 8557 3945 8563 3937 8563 3935 8565
      3935 8576 3958 8606 3962 8603 3953 8551
TIME...MOT...LOC 2312Z 294DEG 32KT 3956 8594 

$$

KH

The office that day

Everything else NWS Indianapolis, IN issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 7, 2:20 PM EDTFrost AdvisoryINDBartholomew, Boone, Brown, Carroll, Clinton, Decatur and 22 more20 hr
May 7, 4:23 PM EDTSpecial Weather StatementINDBoone37 min

Nearby

Special Weather Statements in Indiana, 2021Every special weather statement 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.