Alert archive / Michigan / Special Weather Statements in 2017

Special Weather Statement, NWS Northern Indiana

July 12, 2017Van Buren County, Michigan

NWS Northern Indiana issued this special weather statement at Jul 12, 2017, 5:39 AM EDT for Van Buren County, Michigan. It was in force for 66 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: Jul 12, 2017, 5:39 AM EDT (09:39 UTC)
Expired: Jul 12, 2017, 6:45 AM EDT
In force: 66 min
Issued by: NWS Northern Indiana

County Van Buren County, MI

The radar

The Northern Indiana radar (KIWX), 99 km from the middle of the area, began a volume at 09:40 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

Lincoln, IL (KILX), launched 00:00Z, 9.7 hours before the alert went out and 284 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: 3554 J/kg
Mixed-layer CIN: -3 J/kg
Mixed-layer LCL: 974 m above ground
0-6 km bulk shear: 34 kt
0-1 km storm-relative helicity: 119 m²/s²
0-3 km storm-relative helicity: 166 m²/s²
Significant tornado parameter: 2.2
Supercell composite: 17.4

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Northern Indiana wrote its last area forecast discussion before this special weather statement went out at Jul 12, 4:12 AM EDT, 1 hour 27 minutes earlier.

Area forecast discussion, Jul 12, 4:12 AM EDT, 1 hour 27 minutes before

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Hazardous weather outlook, Jul 11, 5:49 PM EDT, 11 hours 50 minutes before

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In the hours before

Special weather statement, Jul 12, 1:08 AM EDT, 4 hours 31 minutes before

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Special weather statement, Jul 12, 1:43 AM EDT, 3 hours 56 minutes before

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Special weather statement, Jul 12, 2:14 AM EDT, 3 hours 25 minutes before

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Special weather statement, Jul 12, 3:09 AM EDT, 2 hours 30 minutes before

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Special weather statement, Jul 12, 3:48 AM EDT, 1 hour 51 minutes before

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Special weather statement, Jul 12, 5:39 AM EDT, 0 minutes before

Special Weather Statement
National Weather Service Northern Indiana
539 AM EDT WED JUL 12 2017

MIZ077-121045-
Berrien-
539 AM EDT WED JUL 12 2017

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT NORTHEASTERN BERRIEN
COUNTY...

At 538 AM EDT, radar indicated strong thunderstorms were located
along a line extending from near Lake Michigan Beach to 13 miles
northwest of Shorewood-Tower Hill. Movement was east at 30 mph.

Winds in excess of 30 mph are possible with these storms.

Locations impacted include...
Benton Harbor, St. Joseph, Fair Plain, Benton Heights, Watervliet,
Coloma, Stevensville, Paw Paw Lake, Lake Michigan Beach, Sodus,
Riverside, Baroda, Shoreham, Eau Claire, Spinks Corners and Millburg.

This includes the following highways...
 Interstate 196 between mile markers 0 and 7.
 Interstate 94 in Michigan between mile markers 18 and 42.

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

LAT...LON 4202 8622 4196 8633 4196 8668 4213 8658
      4211 8649 4224 8636 4224 8622
TIME...MOT...LOC 0938Z 273DEG 25KT 4221 8645 4200 8684

NWS

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 12, 12:38 AM EDT	Special Marine Warning	IWX		67 min
Jul 12, 9:23 AM EDT	Special Marine Warning	IWX		82 min
Jul 12, 10:43 AM EDT	Special Marine Warning	IWX		92 min
Jul 12, 11:25 AM EDT	Flood Watch	IWX	Adams, Allen, Blackford, Cass, DeKalb, Elkhart and 15 more	17 hr
Jul 12, 11:51 AM EDT	Special Weather Statement	IWX	LaPorte, Saint Joseph	39 min
Jul 12, 1:33 PM EDT	Special Weather Statement	IWX	White	27 min
Jul 12, 1:52 PM EDT	Severe Thunderstorm Warning	IWX	Cass, Pulaski, White	38 min
Jul 12, 2:03 PM EDT	Tornado Warning	IWX	White	17 min
Jul 12, 2:33 PM EDT	Special Weather Statement	IWX	Cass	27 min
Jul 12, 2:38 PM EDT	Special Weather Statement	IWX	White	22 min
Jul 12, 2:59 PM EDT	Special Weather Statement	IWX	White	16 min
Jul 12, 3:09 AM EDT	Special Weather Statement	IWX	Fulton, Henry, Williams	36 min
Jul 12, 3:48 AM EDT	Special Weather Statement	IWX	Fulton	57 min
Jul 12, 4:40 AM EDT	Areal Flood Advisory	IWX	Fulton, Williams	3 hr
Jul 12, 10:08 AM EDT	River Flood Warning	IWX	Putnam	13 hr
Jul 12, 10:08 AM EDT	River Flood Warning	IWX	Williams	6 days
Jul 11, 8:35 PM EDT	Special Weather Statement	IWX	Branch	40 min
Jul 12, 1:08 AM EDT	Special Weather Statement	IWX	Berrien	37 min
Jul 12, 1:43 AM EDT	Special Weather Statement	IWX	Cass	32 min
Jul 12, 2:14 AM EDT	Special Weather Statement	IWX	Van Buren	31 min
Jul 12, 11:14 AM EDT	Special Weather Statement	IWX	Berrien	31 min

Nearby

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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.