Alert archive / Indiana / Special Weather Statements in 2021

Special Weather Statement, NWS Northern Indiana

August 6, 2021Steuben County, Indiana

NWS Northern Indiana issued this special weather statement at Aug 6, 2021, 7:56 PM EDT for Steuben County, Indiana. It was in force for 34 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
Aug 6, 2021, 7:56 PM EDT (23:56 UTC)
Expired
Aug 6, 2021, 8:30 PM EDT
In force
34 min
Issued by
NWS Northern Indiana
Hail
0.25 in
Wind
40

County Steuben County, IN

The radar

The Northern Indiana radar (KIWX), 58 km from the middle of the area, began a volume at 23:58 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

Detroit, MI (KDTX), launched 12:00Z, 11.9 hours before the alert went out and 183 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, Detroit, MI at 12:00Z on 2021-08-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 28 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Detroit, MI at 12:00Z on 2021-08-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 46 square meters per square second.1939Sfc1 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
28 J/kg
Mixed-layer CIN
-42 J/kg
Mixed-layer LCL
1342 m above ground
0-6 km bulk shear
20 kt
0-1 km storm-relative helicity
46 m²/s²
0-3 km storm-relative helicity
78 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

135 
WWUS83 KIWX 062356
SPSIWX

Special Weather Statement
National Weather Service Northern Indiana
756 PM EDT Fri Aug 6 2021
 
INZ006-007-070030-
Lagrange IN-Steuben IN-
756 PM EDT Fri Aug 6 2021

...A strong thunderstorm will impact portions of northwestern Steuben
and eastern Lagrange Counties through 830 PM EDT...

At 755 PM EDT, Doppler radar was tracking a strong thunderstorm 8
miles east of Lagrange, moving northeast at 20 mph.

HAZARD...Winds in excess of 40 mph and pea size hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around 
         unsecured objects. Minor damage to outdoor objects is 
         possible.

Locations impacted include...
  Angola.

This includes the following highways...
 Interstate 69 in Indiana between mile markers 349 and 352.
 Interstate 80 in Indiana between mile markers 134 and 137.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building. 

&&

LAT...LON 4166 8498 4156 8527 4169 8539 4176 8517
      4176 8512
TIME...MOT...LOC 2355Z 240DEG 19KT 4165 8525 

MAX HAIL SIZE...0.25 IN
MAX WIND GUST...40 MPH

$$

NWS

The office that day

Everything else NWS Northern Indiana issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 6, 6:34 PM EDTSpecial Weather StatementIWXStarke41 min
Aug 6, 6:47 PM EDTSevere Thunderstorm WarningIWXLaPorte, Starke28 min
Aug 6, 7:05 PM EDTSpecial Weather StatementIWXMarshall55 min
Aug 6, 7:17 PM EDTSpecial Weather StatementIWXElkhart43 min
Aug 6, 7:29 PM EDTAreal Flood AdvisoryIWXElkhart, Saint Joseph3 hr
Aug 6, 7:50 PM EDTSpecial Weather StatementIWXKosciusko40 min
Aug 6, 4:11 PM EDTSpecial Weather StatementIWXSaint Joseph34 min
Aug 6, 4:45 PM EDTSpecial Weather StatementIWXSaint Joseph30 min
Aug 6, 5:43 PM EDTSpecial Weather StatementIWXSaint Joseph32 min
Aug 6, 6:35 PM EDTSpecial Weather StatementIWXCass40 min
Aug 6, 7:10 PM EDTSpecial Weather StatementIWXSaint Joseph50 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.