Alert archive / Michigan / Winter Storm Warnings in 2009

Winter Storm Warning 4, NWS Detroit, MI

April 5, 200913 counties in Michigan

NWS Detroit, MI issued this winter storm warning at Apr 5, 2009, 3:04 PM EDT for 13 counties in Michigan. It took effect at Apr 5, 2009, 11:00 PM EDT. It was in force for 9 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Apr 5, 2009, 3:04 PM EDT (19:04 UTC)
In effect from
Apr 5, 2009, 11:00 PM EDT
Expired
Apr 6, 2009, 8:00 AM EDT
In force
9 hr
Issued by
NWS Detroit, MI

Counties Genesee County, MI, Huron County, MI, Lapeer County, MI, Lenawee County, MI, Livingston County, MI, Macomb County, MI, Oakland County, MI, Saint Clair County, MI, Sanilac County, MI, Shiawassee County, MI, Tuscola County, MI, Washtenaw County, MI, Wayne County, MI

The radar

The Detroit radar (KDTX), 19 km from the middle of the area, began a volume at 19:03 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.

What forecasters said that day

The local office's own words before this winter storm 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 winter storm warning went out at Apr 5, 2:21 PM EDT, 43 minutes earlier.

Area forecast discussion, Apr 5, 2:21 PM EDT, 43 minutes before
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Hazardous weather outlook, Apr 5, 5:31 AM EDT, 9 hours 33 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
531 AM EDT SUN APR 5 2009

MIZ076-082-083-060945-
WAYNE-LENAWEE-MONROE-
531 AM EDT SUN APR 5 2009

THIS HAZARDOUS WEATHER OUTLOOK IS FOR WAYNE...LENAWEE AND MONROE
COUNTIES.

.DAY ONE...TODAY AND TONIGHT

RAIN WILL SPREAD INTO EXTREME SOUTHEAST MICHIGAN THIS
EVENING...MIXING WITH SNOW AFTER MIDNIGHT AND CHANGING OVER TO A WET
SNOW BEFORE DAWN. 1 TO 3 INCHES OF SNOW ARE POSSIBLE LATE TONIGHT
ACROSS NORTHERN WAYNE COUNTY...WITH ACCUMULATIONS DECREASING TO AN
INCH OR LESS TOWARDS THE OHIO BORDER. BEFORE THE SWITCH TO
SNOW...NEARLY AN INCH OF RAIN MAY FALL...CAUSING MINOR FLOODING
CONCERNS AS WELL.

THE WIDESPREAD PRECIPITATION WILL BE A RESULT OF A STRONG LOW
PRESSURE SYSTEM TRACKING THROUGH THE UPPER OHIO VALLEY AND CENTRAL
GREAT LAKES REGION. THE EXACT TRACK AND STRENGTH OF THE LOW
PRESSURE SYSTEM WILL IMPACT HOW FAST THE PRECIPITATION CHANGES
OVER TO SNOW. SOME ADJUSTMENT MAY BE NEEDED TO THE SNOWFALL
FORECAST IF TEMPERATURES COOL FASTER THAN EXPECTED.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY

SNOW SHOWERS WILL CONTINUE THROUGH THE DAY ON MONDAY WITH AN
ADDITIONAL 1 TO 2 INCHES OF SNOW POSSIBLE. NORTHERLY WINDS WILL ALSO
INCREASE WITH GUSTS TO 30 MPH EXPECTED.

MINOR ACCUMULATIONS WILL ALSO BE POSSIBLE ON MONDAY NIGHT AND
TUESDAY AS SCATTERED SNOW SHOWERS LINGER OVER THE REGION.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT ANTICIPATED...HOWEVER SPOTTER REPORTS OF
SNOW ACCUMULATION WOULD BE GREATLY APPRECIATED.

MIZ049-053>055-060>063-068>070-075-060945-
HURON-SAGINAW-TUSCOLA-SANILAC-SHIAWASSEE-GENESEE-LAPEER-ST. CLAIR-
LIVINGSTON-OAKLAND-MACOMB-WASHTENAW-
531 AM EDT SUN APR 5 2009

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHEAST
MICHIGAN EXTENDING FROM THE NORTHERN DETROIT SUBURBS...TO
SAGINAW...AND EAST INTO THE THUMB.

.DAY ONE...TODAY AND TONIGHT

A WINTER STORM WATCH IS IN EFFECT FROM LATE THIS EVENING TO MONDAY
EVENING. PLEASE SEE THE LATEST URGENT WINTER WEATHER MESSAGE
/WSWDTX/ FOR INFORMATION ABOUT THIS STORM.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY

A WINTER STORM WATCH REMAINS IN EFFECT THROUGH THE DAY ON MONDAY.
MINOR ACCUMULATIONS WILL ALSO BE POSSIBLE ON MONDAY NIGHT AND
TUESDAY AS SCATTERED SNOW SHOWERS LINGER OVER THE REGION.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT ANTICIPATED...HOWEVER SPOTTER REPORTS OF
SNOW ACCUMULATION WOULD BE GREATLY APPRECIATED.

MIZ047-048-060945-
MIDLAND-BAY-
531 AM EDT SUN APR 5 2009

THIS HAZARDOUS WEATHER OUTLOOK IS FOR MIDLAND AND BAY COUNTIES.

.DAY ONE...TODAY AND TONIGHT

SNOW WILL SPREAD INTO THE SAGINAW VALLEY THIS EVENING. 1 TO 3
INCHES OF SNOW ARE POSSIBLE BY MONDAY MORNING...MAKING ROADS
SLICK. ADDITIONAL MINOR ACCUMULATIONS WILL BE POSSIBLE ON MONDAY
AS SNOW SHOWERS BECOME MORE SCATTERED.

SNOW OVERNIGHT WILL BE THE RESULT OF A STRONG LOW PRESSURE SYSTEM
TRACKING THROUGH THE UPPER OHIO VALLEY AND CENTRAL GREAT LAKES
REGION. THE EXACT TRACK AND STRENGTH OF THE LOW PRESSURE SYSTEM
WILL IMPACT THE EXACT SNOWFALL FORECAST. STAY TUNED TO THE LATEST
FORECAST FOR UPDATES ON THIS DEVELOPING STORM.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY

SNOW SHOWERS WILL CONTINUE THROUGH THE DAY ON MONDAY WITH AN
ADDITIONAL 1 TO 2 INCHES OF SNOW POSSIBLE. NORTHERLY WINDS WILL ALSO
INCREASE WITH GUSTS TO 30 MPH EXPECTED.

MINOR ACCUMULATIONS WILL ALSO BE POSSIBLE ON MONDAY NIGHT AND
TUESDAY AS SCATTERED SNOW SHOWERS LINGER OVER THE REGION.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT ANTICIPATED...HOWEVER SPOTTER REPORTS OF
SNOW ACCUMULATION WOULD BE GREATLY APPRECIATED.

LCZ422-423-460-LEZ444-LHZ361>363-421-422-441>443-462>464-060945-
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-
531 AM EDT SUN APR 5 2009

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

.DAY ONE...TODAY AND TONIGHT

SMALL CRAFT ADVISORIES ARE IN EFFECT TODAY FOR THE OUTER SAGINAW
BAY AND NEARSHORE WATERS FROM PORT AUSTIN TO PORT HURON. SMALL
CRAFT ADVISORIES EXPAND TO INCLUDE ALL NEARSHORE WATERS AND LAKE
ST CLAIR OVERNIGHT. PLEASE SEE THE LATEST MARINE PRODUCTS
/NSHDTX/.../GLFSC/ AND /MWWDTX/ FOR DETAILS.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY

A GALE WATCH IS IN EFFECT FOR LAKE HURON SOUTH TO HARBOR BEACH
FROM MONDAY THROUGH TUESDAY. SMALL CRAFT ADVISORIES CONTINUE
INTO WEDNESDAY MORNING. PLEASE SEE THE LATEST MARINE FORECASTS FOR
DETAILS.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NEEDED TODAY AND TONIGHT.

KEC

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
Apr 5, 4:34 AM EDTGale WatchDTX6 hr
Apr 5, 4:34 AM EDTSmall Craft AdvisoryDTX17 hr
Apr 5, 10:38 AM EDTGale WarningDTX53 hr
Apr 5, 3:04 PM EDTWinter Weather AdvisoryDTXLenawee, Monroe, Saginaw17 hr

Nearby

Winter Storm Warnings in Michigan, 2009Every winter storm warning in 2009

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.