Alert archive / Michigan / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 24, NWS Detroit, MI

July 16, 2018Bay County, Midland County, Saginaw County, Michigan

NWS Detroit, MI issued this severe thunderstorm warning at Jul 16, 2018, 2:37 PM EDT for Bay County, Midland County, Saginaw County, Michigan. It was in force for 48 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jul 16, 2018, 2:37 PM EDT (18:37 UTC)
Expired: Jul 16, 2018, 3:25 PM EDT
In force: 48 min
Issued by: NWS Detroit, MI
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Bay County, MI, Midland County, MI, Saginaw County, MI

The nearest sounding before it

Alpena, MI (KAPX), launched 12:00Z, 6.6 hours before the alert went out and 216 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: 559 J/kg
Mixed-layer CIN: -71 J/kg
Mixed-layer LCL: 1166 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: 34 m²/s²
0-3 km storm-relative helicity: 10 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.5

Open this sounding in Storm Lab

What forecasters said that day

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

NWS Detroit, MI wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 16, 12:19 PM EDT, 2 hours 18 minutes earlier.

Area forecast discussion, Jul 16, 12:19 PM EDT, 2 hours 18 minutes before

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Hazardous weather outlook, Jul 16, 4:04 AM EDT, 10 hours 33 minutes before

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In the hours before

Special weather statement, Jul 16, 12:56 PM EDT, 1 hour 41 minutes before

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Special weather statement, Jul 16, 2:17 PM EDT, 20 minutes before

Special Weather Statement
National Weather Service Detroit/Pontiac MI
217 PM EDT MON JUL 16 2018

MIZ076-161915-
Wayne-
217 PM EDT MON JUL 16 2018

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT WAYNE COUNTY...

At 216 PM EDT, radar indicated strong thunderstorms were located
along a line extending from near Detroit to near Taylor. Movement was
northeast at 20 mph.

Winds in excess of 30 mph and intense cloud to ground lightning are
possible with these storms.

Locations impacted include...
Livonia, Taylor, Romulus, Flat Rock, Grosse Pointe, Downtown Detroit,
Canton, Detroit, Dearborn, Wyandotte, Trenton, Grosse Ile,
Northville, Belleville, Greenfield Village, Westland, Dearborn
Heights, Lincoln Park, Southgate and Allen Park.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

LAT...LON 4209 8329 4209 8354 4243 8355 4245 8289
      4239 8290 4236 8298 4235 8295 4234 8296
      4235 8298 4232 8307 4224 8315 4212 8313
      4212 8314 4209 8315 4210 8317 4219 8315
      4211 8319 4203 8319
TIME...MOT...LOC 1816Z 220DEG 18KT 4235 8308 4218 8326

JVC

Special weather statement, Jul 16, 2:19 PM EDT, 18 minutes before

Special Weather Statement
National Weather Service Detroit/Pontiac MI
219 PM EDT MON JUL 16 2018

MIZ053-054-161945-
Tuscola MI-Saginaw MI-
219 PM EDT MON JUL 16 2018

...SIGNIFICANT WEATHER ADVISORY FOR TUSCOLA AND SAGINAW COUNTIES
UNTIL 345 PM EDT...

At 219 PM EDT, Doppler radar indicated strong thunderstorms along a
line extending from 6 miles east of Linwood to 7 miles east of
Edmore. Movement was east at 30 mph.

Half inch hail and winds in excess of 40 mph will be possible with
these storms.

Strong thunderstorms will be near...
  Quanicassee around 245 PM EDT.
  Unionville around 300 PM EDT.
  Akron around 305 PM EDT.
  Caro around 320 PM EDT.
  Gagetown and Marion Springs around 325 PM EDT.
  Cass City around 335 PM EDT.
  Chesaning and Oakley around 345 PM EDT.

Other locations impacted by these storms include Carrollton,
Garfield, Arthur, Colling, Wisner, Fenmore, Ellington, Gera, Buena
Vista Township and Gilford.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Frequent cloud to ground lightning is occurring with these storms.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

&&

LAT...LON 4348 8437 4348 8417 4357 8417 4357 8405
      4352 8405 4348 8370 4360 8370 4359 8369
      4372 8352 4373 8347 4367 8346 4367 8312
      4333 8311 4332 8335 4324 8335 4322 8393
      4313 8393 4313 8437
TIME...MOT...LOC 1819Z 292DEG 25KT 4374 8384 4339 8489

JVC

Special weather statement, Jul 16, 2:29 PM EDT, 8 minutes before

Special Weather Statement
National Weather Service Detroit/Pontiac MI
229 PM EDT MON JUL 16 2018

MIZ063-161915-
St. Clair MI-
229 PM EDT MON JUL 16 2018

...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN ST. CLAIR COUNTY
UNTIL 315 PM EDT...

At 228 PM EDT, Doppler radar indicated a strong thunderstorm 7 miles
east of Emmett, or 10 miles west of Port Huron, moving northeast at
10 mph.

Half inch hail and winds in excess of 40 mph will be possible with
this storm.

This strong thunderstorm will be near...
  Marysville around 255 PM EDT.
  Port Huron and Lakeport around 315 PM EDT.

Other locations impacted by this storm include Fort Gratiot, North
Street, Blaine, Jeddo, Goodells, Smiths Creek, Ruby and Wadhams.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

&&

LAT...LON 4296 8243 4293 8246 4287 8247 4291 8279
      4316 8259 4317 8256 4317 8250 4313 8249
      4312 8247 4308 8245 4307 8245 4306 8246
      4302 8243 4298 8242
TIME...MOT...LOC 1828Z 233DEG 8KT 4296 8263

JVC

The office that day

Everything else NWS Detroit, MI issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 15, 8:14 PM EDT	Areal Flood Advisory	DTX	Oakland	2 hr
Jul 16, 12:56 PM EDT	Special Weather Statement	DTX	Bay, Midland	94 min
Jul 16, 2:17 PM EDT	Special Weather Statement	DTX	Wayne	58 min
Jul 16, 2:19 PM EDT	Special Weather Statement	DTX	Saginaw, Tuscola	86 min
Jul 16, 2:29 PM EDT	Special Weather Statement	DTX	Saint Clair	46 min
Jul 16, 3:20 PM EDT	Special Weather Statement	DTX	Monroe, Wayne	55 min
Jul 16, 3:28 PM EDT	Special Weather Statement	DTX	Huron, Sanilac, Tuscola	77 min
Jul 16, 3:35 PM EDT	Special Weather Statement	DTX	Livingston, Macomb, Oakland	55 min
Jul 16, 3:37 PM EDT	Severe Thunderstorm Warning	DTX	Huron, Sanilac	55 min
Jul 16, 3:46 PM EDT	Special Marine Warning	DTX		72 min
Jul 16, 3:57 PM EDT	Special Marine Warning	DTX		93 min
Jul 16, 4:01 PM EDT	Severe Thunderstorm Warning	DTX	Livingston, Oakland	61 min
Jul 16, 4:01 PM EDT	Severe Thunderstorm Warning	DTX	Macomb, Saint Clair	59 min
Jul 16, 4:13 PM EDT	Special Weather Statement	DTX	Bay, Midland	47 min
Jul 16, 5:03 PM EDT	Special Marine Warning	DTX		55 min
Jul 16, 5:10 PM EDT	Special Weather Statement	DTX	Macomb	65 min
Jul 16, 5:37 PM EDT	Special Weather Statement	DTX	Livingston	68 min
Jul 16, 5:59 PM EDT	Special Weather Statement	DTX	Washtenaw	61 min
Jul 16, 6:14 PM EDT	Special Weather Statement	DTX	Wayne	61 min
Jul 16, 7:17 PM EDT	Special Weather Statement	DTX	Saginaw	43 min
Jul 16, 7:49 PM EDT	Special Weather Statement	DTX	Monroe	56 min
Jul 16, 7:56 PM EDT	Special Weather Statement	DTX	Washtenaw	64 min

Nearby

Severe Thunderstorm Warnings in Michigan, 2018 Every severe thunderstorm warning in 2018

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.