Hazardous Weather Outlook
Issued by NWS Detroit/Pontiac, MI

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FLUS43 KDTX 250845
HWODTX

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
445 AM EDT FRI JUL 25 2014

MIZ047>049-053>055-060>063-068>070-075-076-082-083-260845-
MIDLAND-BAY-HURON-SAGINAW-TUSCOLA-SANILAC-SHIAWASSEE-GENESEE-LAPEER-
ST. CLAIR-LIVINGSTON-OAKLAND-MACOMB-WASHTENAW-WAYNE-LENAWEE-MONROE-
445 AM EDT FRI JUL 25 2014

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHEAST
MICHIGAN.

.DAY ONE...TODAY AND TONIGHT

THERE IS A CHANCE FOR THUNDERSTORMS AFTER MIDNIGHT AS A WARM FRONT
BEGINS TO LIFT THROUGH THE AREA. THESE STORMS ARE NOT EXPECTED TO BE
SEVERE...BUT WILL HAVE THE POTENTIAL TO PRODUCE VERY HEAVY RAINFALL...
WIND GUSTS TO 40 MPH...AND HALF INCH DIAMETER HAIL. STORMS WILL
MOVE FROM WEST TO EAST AT 35 MPH.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

THERE IS A CHANCE OF THUNDERSTORMS SATURDAY AND THUNDERSTORMS ARE
LIKELY SUNDAY. SEVERE WEATHER IS POSSIBLE BOTH DAYS BUT THE
POTENTIAL LOOKS GREATER FOR SUNDAY.

A WARM FRONT WILL LEAVE WARMER AND MORE HUMID AIR OVER THE REGION
SATURDAY WHICH WILL BECOME VERY UNSTABLE DURING THE AFTERNOON AND
EVENING. A COLD FRONT WILL MOVE THROUGH THE REGION TO HELP FOCUS
ACTIVITY BUT IT WILL BE WEAK WHICH WILL CAUSE SOME UNCERTAINTY ON
TIMING AND COVERAGE OF STORMS.

A STRONGER LOW PRESSURE SYSTEM IS EXPECTED SUNDAY WHICH WILL PULL
THE SATURDAY COLD FRONT BACK NORTH AS A WARM FRONT. VERY UNSTABLE
AIR IS EXPECTED TO MOVE BACK INTO THE AREA ALONG AND AHEAD OF THE
WARM FRONT. BOTH THE FRONT AND THE SURFACE LOW ARE EXPECTED TO
COMBINE TO MAKE THUNDERSTORMS LIKELY AND HELP ORGANIZE STORMS FOR
GREATER SEVERE WEATHER POTENTIAL COMPARED TO SATURDAY.

A COOLER TEMPERATURE PATTERN WILL RETURN FOR MUCH OF NEXT WEEK
BUT ENOUGH INSTABILITY WILL BE POSSIBLE FOR THUNDERSTORMS...MAINLY
WEDNESDAY AND THURSDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NEEDED TODAY AND TONIGHT.

$$

LCZ422-423-460-LEZ444-LHZ361>363-421-422-441>443-462>464-260845-
ST. CLAIR RIVER-DETROIT RIVER-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-
445 AM EDT FRI JUL 25 2014

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

.DAY ONE...TODAY AND TONIGHT

THERE IS A CHANCE FOR THUNDERSTORMS AFTER MIDNIGHT AS A WARM
FRONT BEGINS TO LIFT THROUGH THE AREA. THESE STORMS ARE NOT
EXPECTED TO BE SEVERE...BUT WILL HAVE THE POTENTIAL TO PRODUCE
VERY HEAVY RAINFALL...WIND GUSTS TO 35 KNOTS...AND HALF INCH
DIAMETER HAIL. STORMS WILL MOVE FROM WEST TO EAST AT 30 KNOTS.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

THERE IS A CHANCE OF THUNDERSTORMS SATURDAY AND THUNDERSTORMS ARE
LIKELY SUNDAY. SEVERE WEATHER IS POSSIBLE BOTH DAYS BUT THE
POTENTIAL LOOKS GREATER FOR SUNDAY.

A WARM FRONT WILL LEAVE WARMER AND MORE HUMID AIR OVER LAKE HURON
AND LOWER MICHIGAN SATURDAY WHICH WILL BECOME VERY UNSTABLE OVER
LAND AREAS DURING THE AFTERNOON AND EVENING. A COLD FRONT WILL
MOVE THROUGH THE REGION TO HELP FOCUS ACTIVITY BUT IT WILL BE WEAK
WHICH WILL CAUSE SOME UNCERTAINTY ON TIMING AND COVERAGE OF
STORMS. STORMS THAT DEVELOP OVER LAND AREAS COULD MOVE OVER MARINE
AREAS THROUGHOUT THE DAY.

A STRONGER LOW PRESSURE SYSTEM IS EXPECTED SUNDAY WHICH WILL PULL
THE SATURDAY COLD FRONT BACK NORTH AS A WARM FRONT. VERY UNSTABLE
AIR IS EXPECTED TO MOVE BACK INTO LAND AREAS ALONG AND AHEAD OF
THE WARM FRONT. BOTH THE FRONT AND THE SURFACE LOW ARE EXPECTED TO
COMBINE TO MAKE THUNDERSTORMS LIKELY AND HELP ORGANIZE STORMS FOR
GREATER SEVERE WEATHER POTENTIAL OVER ALL MARINE AREAS COMPARED TO
SATURDAY.

A COOLER TEMPERATURE PATTERN WILL RETURN FOR MUCH OF NEXT WEEK
BUT ENOUGH INSTABILITY WILL BE POSSIBLE FOR THUNDERSTORMS...MAINLY
WEDNESDAY AND THURSDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NEEDED TODAY AND TONIGHT.

$$

BT

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









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