Alert archive / Indiana / Special Weather Statements in 2017

Special Weather Statement, NWS Northern Indiana

July 13, 2017LaGrange County, Indiana; Branch County, Michigan

NWS Northern Indiana issued this special weather statement at Jul 13, 2017, 2:21 AM EDT for LaGrange County, Indiana; Branch County, Michigan. It was in force for 24 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: Jul 13, 2017, 2:21 AM EDT (06:21 UTC)
Expired: Jul 13, 2017, 2:45 AM EDT
In force: 24 min
Issued by: NWS Northern Indiana

Counties LaGrange County, IN, Branch County, MI

The radar

The Northern Indiana radar (KIWX), 45 km from the middle of the area, began a volume at 06:22 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
Jul 13, 2:34 AM EDT	TSTM WND GST 35	1 Nw Sturgis, MI	AWOS STATION IRS, STURGIS.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Detroit, MI (KDTX), launched 00:00Z, 6.4 hours before the alert went out and 201 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 885 J/kg
Mixed-layer CIN: -29 J/kg
Mixed-layer LCL: 822 m above ground
0-6 km bulk shear: 25 kt
0-1 km storm-relative helicity: 111 m²/s²
0-3 km storm-relative helicity: 196 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

615 
WWUS83 KIWX 130621
SPSIWX

Special Weather Statement
National Weather Service Northern Indiana
221 AM EDT THU JUL 13 2017

INZ006-007-MIZ079-080-130645-
Lagrange-Steuben-Branch-St. Joseph-
221 AM EDT THU JUL 13 2017

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT WESTERN STEUBEN...
LAGRANGE...SOUTHERN ST. JOSEPH AND SOUTHWESTERN BRANCH COUNTIES...

At 221 AM EDT, radar indicated strong thunderstorms were located
along a line extending from White Pigeon to near Lagrange. Movement
was east at 35 mph.

Winds in excess of 40 mph are possible with these storms.

Locations impacted include...
Sturgis, Lagrange, Bronson, Constantine, White Pigeon, Topeka, Scott,
Fawn River, Batavia, Wolcottville, Burr Oak, Gilead, Shipshewana,
Orland, Honeyville, Flint, Nevada Mills, Lake Gauge, Brushy Prairie
and Klinger Lake.

This includes the following highways...
 Interstate 69 in Indiana between mile markers 342 and 345.
 Interstate 80 in Indiana between mile markers 109 and 140.

Torrential rainfall is also occurring with these storms, and may
cause localized flooding. Do not drive your vehicle through flooded
roadways.

LAT...LON 4200 8507 4155 8505 4152 8557 4152 8564
      4157 8566 4176 8566 4176 8571 4184 8574
TIME...MOT...LOC 0621Z 259DEG 31KT 4179 8565 4168 8533 

$$

NWS

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 12, 9:44 PM EDT	River Flood Warning	IWX	Fulton, Kosciusko, Marshall, Pulaski, Starke	36 hr
Jul 13, 1:09 AM EDT	Special Weather Statement	IWX	Marshall, Starke	51 min
Jul 13, 1:28 AM EDT	Special Weather Statement	IWX	Kosciusko	47 min
Jul 13, 1:32 AM EDT	Severe Thunderstorm Warning	IWX	Kosciusko, Marshall	43 min
Jul 13, 1:56 AM EDT	Special Weather Statement	IWX	Noble	34 min
Jul 13, 4:58 AM EDT	Areal Flood Advisory	IWX	Allen, Putnam	4 hr
Jul 13, 9:57 AM EDT	River Flood Warning	IWX	Putnam	5 days
Jul 13, 2:47 AM EDT	Special Weather Statement	IWX	Saint Joseph	28 min
Jul 13, 2:50 AM EDT	Special Weather Statement	IWX	Hillsdale	25 min

Nearby

Special Weather Statements in Indiana, 2017 Special Weather Statements in Michigan, 2017 Every special weather statement 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.