Alert archive / Indiana / Special Weather Statements in 2021

Special Weather Statement, NWS Northern Indiana

August 6, 2021DeKalb County, Indiana

NWS Northern Indiana issued this special weather statement at Aug 6, 2021, 9:31 PM EDT for DeKalb County, Indiana. It was in force for 44 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, 9:31 PM EDT (01:31 UTC)
Expired
Aug 6, 2021, 10:15 PM EDT
In force
44 min
Issued by
NWS Northern Indiana
Hail
0.00 in
Wind
40

County DeKalb County, IN

The radar

The Northern Indiana radar (KIWX), 66 km from the middle of the area, began a volume at 01:35 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 00:00Z, 1.5 hours before the alert went out and 182 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 00:00Z on 2021-08-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 229 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 00:00Z on 2021-08-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 108 square meters per square second.193958Sfc1 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
229 J/kg
Mixed-layer CIN
-80 J/kg
Mixed-layer LCL
1292 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
108 m²/s²
0-3 km storm-relative helicity
102 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.3

Open this sounding in Storm Lab

The text

As transmitted.

355 
WWUS83 KIWX 070131
SPSIWX

Special Weather Statement
National Weather Service Northern Indiana
931 PM EDT Fri Aug 6 2021
 
INZ007-009-070215-
De Kalb IN-Steuben IN-
931 PM EDT Fri Aug 6 2021

...A strong thunderstorm will impact portions of southern Steuben and
northern De Kalb Counties through 1015 PM EDT...

At 930 PM EDT, Doppler radar was tracking a strong thunderstorm near
Waterloo, or 8 miles northeast of Kendallville, moving east at 25
mph.

HAZARD...Winds in excess of 40 mph.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around 
         unsecured objects.

This strong thunderstorm will be near...
  Waterloo around 940 PM EDT.

Other locations in the path of this storm include Hamilton and
Butler.

This includes the following highways...
 Interstate 69 in Indiana between mile markers 332 and 345.
 Interstate 80 in Indiana near mile marker 156.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building. 

&&

LAT...LON 4164 8481 4146 8480 4139 8481 4140 8519
      4158 8519
TIME...MOT...LOC 0130Z 265DEG 21KT 4150 8510 

MAX HAIL SIZE...0.00 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, 8:00 PM EDTSevere Thunderstorm WarningIWXElkhart, Kosciusko30 min
Aug 6, 8:30 PM EDTSevere Thunderstorm WarningIWXElkhart, Kosciusko, LaGrange, Noble45 min
Aug 6, 11:09 PM EDTSpecial Weather StatementIWXLaPorte36 min
Aug 7, 12:23 AM EDTAreal Flood AdvisoryIWXElkhart, Saint Joseph3 hr
Aug 7, 12:57 AM EDTSpecial Weather StatementIWXMarshall33 min
Aug 7, 1:21 AM EDTSpecial Weather StatementIWXKosciusko24 min
Aug 7, 2:18 AM EDTSpecial Weather StatementIWXNoble27 min
Aug 7, 3:13 AM EDTSpecial Weather StatementIWXHuntington, Wabash32 min
Aug 7, 3:44 AM EDTSpecial Weather StatementIWXPulaski31 min
Aug 7, 5:25 AM EDTSpecial Weather StatementIWXFulton35 min
Aug 7, 5:28 AM EDTSpecial Weather StatementIWXKosciusko32 min
Aug 7, 11:58 AM EDTSpecial Weather StatementIWXAllen32 min
Aug 7, 12:08 PM EDTSevere Thunderstorm WarningIWXAllen37 min
Aug 7, 5:01 PM EDTSpecial Weather StatementIWXHuntington29 min
Aug 7, 1:43 PM EDTSpecial Weather StatementIWXAllen47 min
Aug 6, 8:07 PM EDTSpecial Weather StatementIWXBranch53 min
Aug 6, 8:33 PM EDTSevere Thunderstorm WarningIWXBranch, Hillsdale39 min
Aug 7, 12:54 AM EDTAreal Flood AdvisoryIWXSaint Joseph3 hr

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.