Alert archive / Michigan / Severe Thunderstorm Warnings in 2007

Severe Thunderstorm Warning 146, NWS Detroit, MI

October 18, 2007Bay County, Michigan

NWS Detroit, MI issued this severe thunderstorm warning at Oct 18, 2007, 9:18 PM EDT for Bay County, Michigan. It was in force for 23 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
Oct 18, 2007, 9:18 PM EDT (01:18 UTC)
Expired
Oct 18, 2007, 9:41 PM EDT
In force
23 min
Issued by
NWS Detroit, MI
Area
Storm-based polygon

County Bay County, MI

The radar

The Detroit radar (KDTX), 120 km from the middle of the area, began a volume at 01:18 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Oct 18, 4:23 PM EDTTornado WatchSPC8 hr

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 Oct 18, 7:58 PM EDT, 1 hour 20 minutes earlier.

Area forecast discussion, Oct 18, 7:58 PM EDT, 1 hour 20 minutes before
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Hazardous weather outlook, Oct 18, 2:36 PM EDT, 6 hours 42 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
236 PM EDT THU OCT 18 2007

MIZ047>049-053>055-060>063-068>070-075-076-082-083-191845-
MIDLAND-BAY-HURON-SAGINAW-TUSCOLA-SANILAC-SHIAWASSEE-GENESEE-LAPEER-
ST. CLAIR-LIVINGSTON-OAKLAND-MACOMB-WASHTENAW-WAYNE-LENAWEE-MONROE-
236 PM EDT THU OCT 18 2007

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHEAST
MICHIGAN.

.DAY ONE...THIS AFTERNOON AND TONIGHT

A LINE OF THUNDERSTORMS IS EXPECTED TO TRACK THROUGH SOUTHEAST
MICHIGAN OVERNIGHT AS A COLD FRONT MOVES ACROSS THE STATE. THE
POSSIBILITY FOR SEVERE WEATHER EXISTS FROM 10 PM TONIGHT TO 6 AM
FRIDAY MORNING. THE MOST LIKELY TIMEFRAME WILL BE FROM
MIDNIGHT...FOR THE TRI CITIES AND SAGINAW RIVER VALLEY...TO 4 AM
FOR AREAS AROUND THE DETROIT METRO AREA. THE PRIMARY THREAT WILL
BE DAMAGING WINDS OF 70 MPH AND GREATER...BUT THE DEVELOPMENT OF
TORNADOES WILL ALSO BE POSSIBLE...AS WILL LARGE HAIL. STORM MOTION
OVERNIGHT WILL BE TO THE NORTHEAST AT 50 MPH.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

DISPATCHERS...PLEASE NOTIFY YOUR EMERGENCY MANAGER IMMEDIATELY.
SPOTTER ACTIVATION MAY BE REQUIRED OVERNIGHT.

LCZ422-423-460-LEZ444-LHZ421-422-441>443-462>464-191845-
ST. CLAIR RIVER-DETROIT RIVER-LAKE ST. CLAIR-
MICHIGAN WATERS OF LAKE ERIE FROM DETROIT RIVER TO NORTH CAPE MI-
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-
236 PM EDT THU OCT 18 2007

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

.DAY ONE...THIS AFTERNOON AND TONIGHT

A LINE OF THUNDERSTORMS IS EXPECTED TO TRACK THROUGH SOUTHEAST
MICHIGAN OVERNIGHT AS A COLD FRONT MOVES ACROSS THE STATE. THE
POSSIBILITY FOR SEVERE WEATHER EXISTS FROM 10 PM TONIGHT TO 6 AM
FRIDAY MORNING. THE MOST LIKELY TIMEFRAME WILL BE FROM
MIDNIGHT...FOR SAGINAW BAY...TO 4 AM FOR LAKE ST CLAIR AND THE
MICHIGAN WATERS OF LAKE ERIE. THE PRIMARY THREAT WILL BE DAMAGING
WINDS OF 60 KNOTS AND GREATER...BUT THE DEVELOPMENT OF TORNADOES
WILL ALSO BE POSSIBLE...AS WILL LARGE HAIL. STORM MOTION OVERNIGHT
WILL BE TO THE NORTHEAST AT 50 MPH.

SMALL CRAFT ADVISORIES ARE IN EFFECT FOR ALL NEARSHORE WATERS
THIS AFTERNOON AND TONIGHT. PLEASE REFER TO THE LATEST MARINE
WEATHER MESSAGE /MWWDTX/ OR NEARSHORE FORECAST /NSHDTX/ FOR
FURTHER DETAILS.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY

GALE WARNINGS ARE IN EFFECT FOR ALL NEARSHORE AND OPEN WATERS AFTER
8 AM FRIDAY. PLEASE REFER TO THE LATEST MARINE WEATHER MESSAGE
/MWWDTX/ OPEN WATER FORECAST /GLFLH/ OR NEARSHORE FORECAST
/NSHDTX/ FOR FURTHER DETAILS.

THERE IS POTENTIAL FOR SMALL CRAFT CONDITIONS TO DEVELOP ONCE
AGAIN MONDAY NIGHT AND TUESDAY AS THE NEXT LOW PRESSURE SYSTEM
MOVES THROUGH THE NORTHERN GREAT LAKES.

.SPOTTER INFORMATION STATEMENT...

DISPATCHERS...PLEASE NOTIFY YOUR EMERGENCY MANAGER IMMEDIATELY.
SPOTTER ACTIVATION MAY BE REQUIRED OVERNIGHT.

LHZ361>363-191845-
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-
236 PM EDT THU OCT 18 2007

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF LAKE HURON.

.DAY ONE...THIS AFTERNOON AND TONIGHT

A LINE OF THUNDERSTORMS IS EXPECTED TO TRACK THROUGH LAKE HURON
OVERNIGHT AS A COLD FRONT MOVES ACROSS THE STATE. THE POSSIBILITY
FOR SEVERE WEATHER EXISTS FROM MIDNIGHT TO 6 AM. THE PRIMARY
THREAT WILL BE DAMAGING WINDS OF 60 KNOTS AND GREATER...BUT THE
DEVELOPMENT OF TORNADOES WILL ALSO BE POSSIBLE...AS WILL LARGE
HAIL. STORM MOTION OVERNIGHT WILL BE TO THE NORTHEAST AT 50 MPH.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY

A GALE WARNING IS IN EFFECT AFTER 8 AM FRIDAY. PLEASE REFER TO THE
LATEST MARINE WEATHER MESSAGE /MWWDTX/ OR OPEN WATER FORECAST
/GLFLH/ FOR FURTHER DETAILS.

.SPOTTER INFORMATION STATEMENT...

DISPATCHERS...PLEASE NOTIFY YOUR EMERGENCY MANAGER IMMEDIATELY.
SPOTTER ACTIVATION MAY BE REQUIRED OVERNIGHT.

CB

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

In the hours before

Special weather statement, Oct 18, 9:16 PM EDT, 2 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
916 PM EDT THU OCT 18 2007

MIZ060-190200-
SHIAWASSEE-
916 PM EDT THU OCT 18 2007

...SPECIAL WEATHER STATEMENT...

AT 914 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM NEAR PERRY...MOVING NORTHEAST AT 50 MPH.

PEA SIZE HAIL...WINDS GREATER THAN 40 MPH...OCCASIONAL CLOUD TO
GROUND LIGHTNING...BRIEF MODERATE DOWNPOURS...ARE POSSIBLE WITH THIS
STORM.

THE THUNDERSTORM WILL BE NEAR...
   BANCROFT AND BENNINGTON BY 925 PM EDT...
   CORUNNA...VERNON AND  OWOSSO BY 930 PM EDT...
   HENDERSON BY 935 PM EDT...
   JUDDVILLE BY 940 PM EDT...
   NEW LOTHROP BY 945 PM EDT...

GUSTY WINDS MAY CAUSE SMALL OBJECTS SUCH AS TRASH BINS TO BLOW
AROUND. STAY AWAY FROM HIGH OBJECTS OUTDOORS SUCH AS TREES. SEEK
SHELTER IN A STURDY STRUCTURE UNTIL THIS STORM HAS PASSED.

MANN

The office that day

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

IssuedProductOfficeCountiesLasted
Oct 18, 8:00 PM EDTSpecial Marine WarningDTX2 hr
Oct 18, 8:02 PM EDTSevere Thunderstorm WarningDTXMidland29 min
Oct 18, 8:18 PM EDTSevere Thunderstorm WarningDTXSaginaw72 min
Oct 18, 8:35 PM EDTTornado WarningDTXSaginaw55 min
Oct 18, 9:26 PM EDTSevere Thunderstorm WarningDTXMidland49 min
Oct 18, 10:33 PM EDTTornado WarningDTXShiawassee57 min
Oct 18, 11:11 PM EDTTornado WarningDTXGenesee49 min
Oct 18, 11:30 PM EDTTornado WarningDTXSaginaw, Tuscola75 min
Oct 19, 12:02 AM EDTSevere Thunderstorm WarningDTXLivingston, Shiawassee58 min
Oct 19, 12:32 AM EDTSevere Thunderstorm WarningDTXGenesee73 min
Oct 19, 1:00 AM EDTSevere Thunderstorm WarningDTXLapeer, Tuscola65 min
Oct 19, 1:15 AM EDTTornado WarningDTXTuscola38 min
Oct 19, 1:49 AM EDTSpecial Marine WarningDTX58 min
Oct 19, 10:42 AM EDTLow Water AdvisoryDTX20 hr

Nearby

Severe Thunderstorm Warnings in Michigan, 2007Every severe thunderstorm warning in 2007

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive.