Alert archive / Michigan / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 63, NWS Detroit, MI

September 3, 2015Bay County, Saginaw County, Michigan

NWS Detroit, MI issued this severe thunderstorm warning at Sep 3, 2015, 11:08 AM EDT for Bay County, Saginaw County, Michigan. It was in force for 52 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: Sep 3, 2015, 11:08 AM EDT (15:08 UTC)
Expired: Sep 3, 2015, 12:00 PM EDT
In force: 52 min
Issued by: NWS Detroit, MI
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Bay County, MI, Saginaw County, MI

The radar

The Detroit radar (KDTX), 101 km from the middle of the area, began a volume at 15:08 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, 3.1 hours before the alert went out and 101 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: 1723 J/kg
Mixed-layer CIN: -41 J/kg
Mixed-layer LCL: 977 m above ground
0-6 km bulk shear: 20 kt
0-1 km storm-relative helicity: -1 m²/s²
0-3 km storm-relative helicity: 26 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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 Sep 3, 7:32 AM EDT, 3 hours 36 minutes earlier.

Area forecast discussion, Sep 3, 7:32 AM EDT, 3 hours 36 minutes before

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Hazardous weather outlook, Sep 3, 4:04 AM EDT, 7 hours 4 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
404 AM EDT THU SEP 3 2015

MIZ047>049-053>055-060>063-068>070-075-076-082-083-040815-
MIDLAND-BAY-HURON-SAGINAW-TUSCOLA-SANILAC-SHIAWASSEE-GENESEE-LAPEER-
ST. CLAIR-LIVINGSTON-OAKLAND-MACOMB-WASHTENAW-WAYNE-LENAWEE-MONROE-
404 AM EDT THU SEP 3 2015

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHEAST MICHIGAN.

.DAY ONE...TODAY AND TONIGHT

SCATTERED TO NUMEROUS THUNDERSTORMS ARE EXPECTED TODAY AND
TONIGHT...MAINLY THIS AFTERNOON. THESE STORMS ARE EXPECTED TO BE
STRONG...CAPABLE OF PRODUCING WIND GUSTS TO 55 MPH...SMALL
HAIL...AND TORRENTIAL RAINFALL WHICH COULD CAUSE LOCALIZED
FLOODING. STORMS WILL MOVE SLOWLY TO THE SOUTHEAST AROUND 10 MPH.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY

THERE IS A LOWER CHANCE OF THUNDERSTORMS FRIDAY AND
SATURDAY...WITH A BETTER CHANCE ON MONDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NEEDED TODAY AND TONIGHT.

LCZ460-LEZ444-LHZ361>363-421-422-441>443-462>464-040815-
LAKE ST. CLAIR-
MICHIGAN WATERS OF LAKE ERIE FROM DETROIT RIVER TO NORTH CAPE MI-
LAKE HURON FROM 5NM EAST OF MACKINAC BRIDGE TO PRESQUE ISLE LT
BEYOND 5 NM OFF SHORE-
LAKE HURON FROM PRESQUE ISLE LIGHT TO STURGEON POINT MI BEYOND 5NM
OFF SHORE-
LAKE HURON FROM STURGEON POINT TO ALABASTER MI BEYOND 5NM OFF SHORE-
OUTER SAGINAW BAY SW OF ALABASTER TO PORT AUSTIN MI TO INNER SAGINAW
BAY-INNER SAGINAW BAY SW OF POINT AU GRES TO BAY PORT MI-
PORT AUSTIN TO HARBOR BEACH MI-HARBOR BEACH TO PORT SANILAC MI-
PORT SANILAC TO PORT HURON MI-
LAKE HURON FROM PORT AUSTIN TO HARBOR BEACH BEYOND 5NM OFF SHORE-
LAKE HURON FROM HARBOR BEACH TO PORT SANILAC BEYOND 5NM OFF SHORE-
LAKE HURON FROM PORT SANILAC TO PORT HURON BEYOND 5NM OFF SHORE-
404 AM EDT THU SEP 3 2015

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF LAKE ERIE...LAKE
HURON AND LAKE ST CLAIR.

.DAY ONE...TODAY AND TONIGHT

SCATTERED TO NUMEROUS THUNDERSTORMS ARE EXPECTED TODAY AND
TONIGHT...MAINLY THIS AFTERNOON. THESE STORMS ARE EXPECTED TO BE
STRONG...CAPABLE OF PRODUCING WIND GUSTS TO 45 KNOTS...SMALL
HAIL...AND TORRENTIAL RAINFALL. STORMS WILL MOVE SLOWLY TO THE
SOUTHEAST AROUND 10 MPH.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY

THERE IS A LOWER CHANCE OF THUNDERSTORMS FRIDAY AND
SATURDAY...WITH A BETTER CHANCE ON MONDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NEEDED TODAY AND TONIGHT.

YOU CAN OBTAIN YOUR LATEST NATIONAL WEATHER SERVICE FORECASTS ONLINE
AT WWW.WEATHER.GOV/DETROIT (ALL LOWER CASE).

SF

In the hours before

Special weather statement, Sep 3, 8:26 AM EDT, 2 hours 42 minutes before

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Special weather statement, Sep 3, 9:23 AM EDT, 1 hour 45 minutes before

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Special weather statement, Sep 3, 10:10 AM EDT, 58 minutes before

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Special weather statement, Sep 3, 10:27 AM EDT, 41 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
1027 AM EDT THU SEP 3 2015

MIZ047-048-053-031500-
BAY-SAGINAW-MIDLAND-
1027 AM EDT THU SEP 3 2015

...A STRONG THUNDERSTORM WILL AFFECT SOUTHERN BAY...SAGINAW AND
SOUTHERN MIDLAND COUNTIES...

AT 1027 AM EDT...A STRONG THUNDERSTORM WAS OVER BRECKENRIDGE...OR 10
MILES NORTHEAST OF ALMA...MOVING EAST AT 45 MPH.

WIND GUSTS UP TO 50 MPH AND HALF INCH HAIL ARE POSSIBLE WITH THIS
STORM.

THIS STORM WILL BE NEAR...
  MERRILL AROUND 1035 AM EDT.
  MIDLAND AND FREELAND AROUND 1050 AM EDT.
  AUBURN AROUND 1055 AM EDT.
  SAGINAW...BAY CITY AND ZILWAUKEE AROUND 1100 AM EDT.

OTHER LOCATIONS IMPACTED BY THIS STORM INCLUDE BURT...POSEYVILLE...
GARFIELD...LAPORTE...NELSON...GORDONVILLE...ARTHUR...PORTER
TOWNSHIP...BUENA VISTA TOWNSHIP AND FENMORE.

TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THIS STORM...AND MAY CAUSE
LOCALIZED FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.

LAT...LON 4373 8395 4367 8391 4362 8374 4360 8370
      4322 8370 4322 8393 4313 8393 4313 8436
      4347 8437 4347 8461 4354 8461
TIME...MOT...LOC 1427Z 254DEG 40KT 4344 8447

DT

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 3, 8:26 AM EDT	Special Weather Statement	DTX	Midland	34 min
Sep 3, 9:23 AM EDT	Special Weather Statement	DTX	Midland	67 min
Sep 3, 9:59 AM EDT	Special Marine Warning	DTX		91 min
Sep 3, 10:10 AM EDT	Special Weather Statement	DTX	Bay, Saginaw	95 min
Sep 3, 10:27 AM EDT	Special Weather Statement	DTX	Bay, Saginaw	33 min
Sep 3, 11:17 AM EDT	Special Weather Statement	DTX	Huron	88 min
Sep 3, 11:35 AM EDT	Special Weather Statement	DTX	Genesee, Tuscola	25 min
Sep 3, 11:52 AM EDT	Special Weather Statement	DTX	Huron	53 min
Sep 3, 12:02 PM EDT	Special Weather Statement	DTX	Genesee, Shiawassee	58 min
Sep 3, 12:09 PM EDT	Special Marine Warning	DTX		96 min
Sep 3, 12:59 PM EDT	Special Weather Statement	DTX	Genesee, Lapeer	61 min
Sep 3, 1:00 PM EDT	Special Weather Statement	DTX	Oakland	30 min
Sep 3, 1:29 PM EDT	Severe Thunderstorm Warning	DTX	Lapeer, Oakland	61 min
Sep 3, 1:35 PM EDT	Special Weather Statement	DTX	Wayne	55 min
Sep 3, 1:43 PM EDT	Severe Thunderstorm Warning	DTX	Macomb, Saint Clair	77 min
Sep 3, 1:47 PM EDT	Areal Flood Advisory	DTX	Bay, Midland, Saginaw	3 hr
Sep 3, 1:49 PM EDT	Special Marine Warning	DTX		86 min
Sep 3, 1:56 PM EDT	Severe Thunderstorm Warning	DTX	Wayne	79 min
Sep 3, 3:00 PM EDT	Flash Flood Warning	DTX	Bay, Midland, Saginaw	3 hr
Sep 3, 3:18 PM EDT	Special Marine Warning	DTX		57 min
Sep 3, 3:22 PM EDT	Special Marine Warning	DTX		53 min
Sep 3, 4:34 PM EDT	Special Weather Statement	DTX	Wayne	56 min
Sep 3, 4:37 PM EDT	Flash Flood Watch	DTX	Bay, Genesee, Huron, Lapeer, Macomb, Midland and 6 more	9 hr
Sep 3, 4:44 PM EDT	Special Weather Statement	DTX	Washtenaw	61 min
Sep 3, 5:01 PM EDT	Special Weather Statement	DTX	Livingston, Shiawassee	29 min
Sep 3, 5:39 PM EDT	Severe Thunderstorm Warning	DTX	Livingston	32 min
Sep 3, 6:26 PM EDT	Special Weather Statement	DTX	Washtenaw, Wayne	49 min
Sep 3, 7:01 PM EDT	Special Weather Statement	DTX	Lapeer	44 min
Sep 3, 7:31 PM EDT	Special Weather Statement	DTX	Macomb, Saint Clair	44 min

Nearby

Severe Thunderstorm Warnings in Michigan, 2015 Every severe thunderstorm warning in 2015

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.