Alert archive / Michigan / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 38, NWS Detroit, MI

August 2, 2015Huron County, Sanilac County, Tuscola County, Michigan

NWS Detroit, MI issued this severe thunderstorm warning at Aug 2, 2015, 1:33 PM EDT for Huron County, Sanilac County, Tuscola County, Michigan. It was in force for 57 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
Aug 2, 2015, 1:33 PM EDT (17:33 UTC)
Expired
Aug 2, 2015, 2:30 PM EDT
In force
57 min
Issued by
NWS Detroit, MI
Area
Storm-based polygon
Hail
1.0 in
Wind
50.0 mph

Counties Huron County, MI, Sanilac County, MI, Tuscola County, MI

The radar

The Detroit radar (KDTX), 109 km from the middle of the area, began a volume at 17:35 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 12:00Z, 5.6 hours before the alert went out and 106 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 12:00Z on 2015-08-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 12 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Detroit, MI at 12:00Z on 2015-08-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 113 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
12 J/kg
Mixed-layer CIN
-186 J/kg
Mixed-layer LCL
1599 m above ground
0-6 km bulk shear
38 kt
0-1 km storm-relative helicity
113 m²/s²
0-3 km storm-relative helicity
218 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 Aug 2, 11:53 AM EDT, 1 hour 40 minutes earlier.

Area forecast discussion, Aug 2, 11:53 AM EDT, 1 hour 40 minutes before
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Hazardous weather outlook, Aug 2, 3:51 AM EDT, 9 hours 42 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
351 AM EDT SUN AUG 2 2015

MIZ047>049-053>055-060>063-068>070-075-076-082-083-030800-
MIDLAND-BAY-HURON-SAGINAW-TUSCOLA-SANILAC-SHIAWASSEE-GENESEE-LAPEER-
ST. CLAIR-LIVINGSTON-OAKLAND-MACOMB-WASHTENAW-WAYNE-LENAWEE-MONROE-
351 AM EDT SUN AUG 2 2015

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHEAST
MICHIGAN.

.DAY ONE...TODAY AND TONIGHT

THUNDERSTORMS ARE LIKELY THIS AFTERNOON INTO TONIGHT. THERE IS AN
ENHANCED RISK THAT THESE STORMS WILL BE SEVERE. THE PRIMARY THREAT
IS WIND GUSTS TO 60 MPH. ADDITIONAL THREATS INCLUDE LARGE HAIL TO
ONE INCH IN DIAMETER AND AN ISOLATED TORNADO MAINLY NORTH OF THE I-
69 CORRIDOR.

THE GREATEST THREAT IS BETWEEN 8PM AND 2AM...ALTHOUGH AN ISOLATED
SEVERE THUNDERSTORM IS POSSIBLE NORTH OF THE M59 CORRIDOR AS EARLY
AS 3PM. STORM MOTION WILL BE NORTHWEST TO SOUTHEAST AT 40 MPH.

A BEACH HAZARDS STATEMENT IS IN EFFECT FOR HURON COUNTY. SEE THE
LATEST COASTAL HAZARD MESSAGE FOR DETAIL.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED THIS EVENING INTO TONIGHT.
DISPATCHERS PLEASE NOTIFY YOUR EMERGENCY MANAGERS IMMEDIATELY.

LCZ460-LEZ444-LHZ361>363-421-422-441>443-462>464-030800-
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-
351 AM EDT SUN AUG 2 2015

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

.DAY ONE...TODAY AND TONIGHT

THUNDERSTORMS ARE LIKELY THIS AFTERNOON INTO TONIGHT. THERE IS AN
ENHANCED RISK THAT THESE STORMS WILL BE SEVERE. THE PRIMARY THREAT
IS WIND GUSTS TO 60 MPH. ADDITIONAL THREATS INCLUDE LARGE HAIL TO
ONE INCH IN DIAMETER AND AN ISOLATED TORNADO MAINLY NORTH OF THE I-
69 CORRIDOR.

THE GREATEST THREAT IS BETWEEN 8PM AND 2AM...ALTHOUGH AN ISOLATED
SEVERE THUNDERSTORM IS POSSIBLE NORTH OF THE M59 CORRIDOR AS EARLY
AS 3PM. STORM MOTION WILL BE NORTHWEST TO SOUTHEAST AT 40 MPH.

A BEACH HAZARDS STATEMENT IS IN EFFECT FOR HURON COUNTY. SEE THE
LATEST COASTAL HAZARD MESSAGE FOR DETAIL.

SMALL CRAFT ADVISORIES ARE IN EFFECT. SEE THE FORECAST FOR DETAIL.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.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).

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 2, 3:58 AM EDTBeach Hazards StatementDTXHuron18 hr
Aug 2, 1:44 PM EDTSpecial Marine WarningDTX91 min
Aug 2, 2:18 PM EDTSevere Thunderstorm WarningDTXHuron57 min
Aug 2, 2:24 PM EDTSevere Thunderstorm WarningDTXSanilac, Tuscola81 min
Aug 2, 2:28 PM EDTSpecial Marine WarningDTX62 min
Aug 2, 2:35 PM EDTSevere Thunderstorm WarningDTXBay, Saginaw55 min
Aug 2, 2:55 PM EDTSpecial Marine WarningDTX95 min
Aug 2, 2:56 PM EDTSpecial Marine WarningDTX94 min
Aug 2, 3:21 PM EDTTornado WarningDTXSanilac, Tuscola39 min
Aug 2, 3:29 PM EDTSevere Thunderstorm WarningDTXBay, Saginaw32 min
Aug 2, 3:34 PM EDTSevere Thunderstorm WarningDTXSanilac, Tuscola56 min
Aug 2, 5:10 PM EDTSpecial Marine WarningDTX65 min
Aug 2, 5:42 PM EDTSpecial Marine WarningDTX2 hr
Aug 2, 5:45 PM EDTSevere Thunderstorm WarningDTXHuron90 min
Aug 2, 5:57 PM EDTSevere Thunderstorm WarningDTXBay48 min
Aug 2, 6:18 PM EDTSpecial Marine WarningDTX87 min
Aug 2, 6:24 PM EDTSevere Thunderstorm WarningDTXHuron, Sanilac, Tuscola81 min
Aug 2, 7:05 PM EDTSpecial Marine WarningDTX115 min
Aug 2, 7:08 PM EDTSevere Thunderstorm WarningDTXHuron, Sanilac32 min
Aug 2, 7:25 PM EDTSevere Thunderstorm WarningDTXTuscola15 min
Aug 2, 7:41 PM EDTAreal Flood AdvisoryDTXTuscola3 hr
Aug 2, 7:45 PM EDTSevere Thunderstorm WarningDTXBay, Midland30 min
Aug 2, 7:51 PM EDTSpecial Marine WarningDTX84 min

Nearby

Severe Thunderstorm Warnings in Michigan, 2015Every 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.