Alert archive / Michigan / Winter Storm Warnings in 2021

Winter Storm Warning 1, NWS Detroit, MI

February 15, 202112 counties in Michigan

NWS Detroit, MI issued this winter storm warning at Feb 15, 2021, 10:10 AM EST for 12 counties in Michigan. It took effect at Feb 15, 2021, 6:00 PM EST. It was in force for 18 hr. 60 reports came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
Feb 15, 2021, 10:10 AM EST (15:10 UTC)
In effect from
Feb 15, 2021, 6:00 PM EST
Expired
Feb 16, 2021, 12:00 PM EST
In force
18 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, Monroe County, MI, Oakland County, MI, Saint Clair County, MI, Sanilac County, MI, Washtenaw County, MI, Wayne County, MI

The radar

The Detroit radar (KDTX), 12 km from the middle of the area, began a volume at 15:12 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 was reported inside it

TimeReportWhereRemark
Feb 15, 8:15 PM ESTSNOW 2Canton, MI2 HOUR SNOWFALL TOTAL.
Feb 15, 8:34 PM ESTSNOW 1.5Ann Arbor, MI2.5 HOUR SNOWFALL TOTAL. OBSERVATION TAKEN AT UNIVERSITY OF MICHIGAN.
Feb 15, 9:00 PM ESTSNOW 1.5Garden City, MI3 HOUR SNOWFALL TOTAL.
Feb 16, 12:00 AM ESTSNOW 42 Nw Columbiaville, MI5 HOUR SNOWFALL TOTAL.
Feb 16, 12:00 AM ESTSNOW 5.42 Ene Romulus, MI7 HOUR SNOWFALL TOTAL MEASURED AT DETROIT METRO AIRPORT.
Feb 16, 12:30 AM ESTSNOW 4.51 Wsw Novi, MI7 HOUR SNOWFALL TOTAL.
Feb 16, 1:00 AM ESTSNOW 4.34 E White Lake, MI7 HOUR SNOWFALL TOTAL MEASURED AT NWS WHITE LAKE OFFICE.
Feb 16, 1:00 AM ESTSNOW 4.35 Sw Flint, MI6 HOUR SNOWFALL TOTAL MEASURED AT FLINT BISHOP AIRPORT.
Feb 16, 6:30 AM ESTSNOW 5.11 Se Pinnebog, MI24 HOUR SNOWFALL TOTAL
Feb 16, 6:30 AM ESTSNOW 5.11 Se Pinnebog, MI24 HOUR SNOWFALL TOTAL.
Feb 16, 6:30 AM ESTSNOW 5.2Ypsilanti, MI13 HOUR SNOWFALL TOTAL
Feb 16, 6:30 AM ESTSNOW 5.2Ypsilanti, MI13 HOUR SNOWFALL TOTAL.
Feb 16, 7:00 AM ESTSNOW 4.32 S Plymouth, MI24 HOUR SNOWFALL TOTAL
Feb 16, 7:00 AM ESTSNOW 4.32 S Plymouth, MI24 HOUR SNOWFALL TOTAL.
Feb 16, 7:00 AM ESTSNOW 54 S Redford, MI24 HOUR SNOWFALL TOTAL
Feb 16, 7:00 AM ESTSNOW 54 S Redford, MI24 HOUR SNOWFALL TOTAL.
Feb 16, 7:00 AM ESTSNOW 5.5Beverly Hills, MI13 HOUR SNOWFALL TOTAL
Feb 16, 7:00 AM ESTSNOW 5.5Beverly Hills, MI13 HOUR SNOWFALL TOTAL.
Feb 16, 7:00 AM ESTSNOW 63 N Utica, MI24 HOUR SNOWFALL TOTAL
Feb 16, 7:00 AM ESTSNOW 63 N Utica, MI24 HOUR SNOWFALL TOTAL.
Feb 16, 7:00 AM ESTSNOW 6.52 Nw Waterford, MI24 HOUR SNOWFALL TOTAL
Feb 16, 7:00 AM ESTSNOW 6.52 Nw Waterford, MI24 HOUR SNOWFALL TOTAL.
Feb 16, 7:00 AM ESTSNOW 6.5Dundee, MI14 HOUR SNOWFALL TOTAL
Feb 16, 7:00 AM ESTSNOW 6.5Dundee, MI14 HOUR SNOWFALL TOTAL.
Feb 16, 7:00 AM ESTSNOW 6.5Whitmore Lake, MI13 HOUR SNOWFALL TOTAL
Feb 16, 7:00 AM ESTSNOW 6.5Whitmore Lake, MI13 HOUR SNOWFALL TOTAL.
Feb 16, 7:00 AM ESTSNOW 74 Se Orchard Lake, MI24 HOUR SNOWFALL TOTAL
Feb 16, 7:00 AM ESTSNOW 74 Se Orchard Lake, MI24 HOUR SNOWFALL TOTAL.
Feb 16, 7:00 AM ESTSNOW 7.5White Lake, MI24 HOUR SNOWFALL TOTAL. MEASURED AT NWS WHITE LAKE OFFICE.
Feb 16, 7:00 AM ESTSNOW 8.23 Se Grand Blanc, MI24 HOUR SNOWFALL TOTAL
Feb 16, 7:00 AM ESTSNOW 8.23 Se Grand Blanc, MI24 HOUR SNOWFALL TOTAL.
Feb 16, 7:00 AM ESTSNOW 8.32 Ene Romulus, MI24 HOUR SNOWFALL TOTAL. MEASURED AT DETROIT METRO AIRPORT.
Feb 16, 7:00 AM ESTSNOW 8.33 Sse Genesee, MI24 HOUR SNOWFALL TOTAL
Feb 16, 7:00 AM ESTSNOW 8.33 Sse Genesee, MI24 HOUR SNOWFALL TOTAL.
Feb 16, 7:00 AM ESTSNOW 8.34 N Burton, MI24 HOUR SNOWFALL TOTAL
Feb 16, 7:00 AM ESTSNOW 9.54 Ssw Flint, MI24 HOUR SNOWFALL TOTAL. MEASURED AT FLINT BISHOP AIRPORT.
Feb 16, 7:00 AM ESTSNOW 9.64 Ssw Flint, MI24 HOUR SNOWFALL TOTAL. MEASURED AT FLINT BISHOP AIRPORT.
Feb 16, 7:05 AM ESTSNOW 4.82 S Farmington, MI24 HOUR SNOWFALL TOTAL
Feb 16, 7:05 AM ESTSNOW 4.82 S Farmington, MI24 HOUR SNOWFALL TOTAL.
Feb 16, 7:30 AM ESTSNOW 5.71 Ene Farmington, MI24 HOUR SNOWFALL TOTAL
Feb 16, 7:30 AM ESTSNOW 5.71 Ene Farmington, MI24 HOUR SNOWFALL TOTAL.
Feb 16, 7:30 AM ESTSNOW 5.91 Ese Morenci, MI24 HOUR SNOWFALL TOTAL
Feb 16, 7:30 AM ESTSNOW 5.91 Ese Morenci, MI24 HOUR SNOWFALL TOTAL.
Feb 16, 7:30 AM ESTSNOW 6.83 Se Ann Arbor, MI24 HOUR SNOWFALL TOTAL
Feb 16, 7:30 AM ESTSNOW 6.83 Se Ann Arbor, MI24 HOUR SNOWFALL TOTAL.
Feb 16, 7:30 AM ESTSNOW 6.92 S Ortonville, MI24 HOUR SNOWFALL TOTAL
Feb 16, 7:30 AM ESTSNOW 6.92 S Ortonville, MI24 HOUR SNOWFALL TOTAL.
Feb 16, 7:30 AM ESTSNOW 72 Wsw Ann Arbor, MI14 HOUR SNOWFALL TOTAL
Feb 16, 7:30 AM ESTSNOW 72 Wsw Ann Arbor, MI14 HOUR SNOWFALL TOTAL.
Feb 16, 7:30 AM ESTSNOW 81 W Lapeer, MI24 HOUR SNOWFALL TOTAL
Feb 16, 7:30 AM ESTSNOW 81 W Lapeer, MI24 HOUR SNOWFALL TOTAL.
Feb 16, 8:00 AM ESTSNOW 63 Ssw Saline, MI24 HOUR SNOWFALL TOTAL
Feb 16, 8:00 AM ESTSNOW 63 Ssw Saline, MI24 HOUR SNOWFALL TOTAL.
Feb 16, 8:00 AM ESTSNOW 6.43 Wnw Pinckney, MI24 HOUR SNOWFALL TOTAL
Feb 16, 8:00 AM ESTSNOW 6.43 Wnw Pinckney, MI24 HOUR SNOWFALL TOTAL.
Feb 16, 8:00 AM ESTSNOW 8.5Shelby Township, MI14 HOUR SNOWFALL TOTAL
Feb 16, 8:00 AM ESTSNOW 8.5Shelby Township, MI14 HOUR SNOWFALL TOTAL.
Feb 16, 8:00 AM ESTSNOW 12Peck, MI13 HOUR SNOWFALL TOTAL
Feb 16, 8:00 AM ESTSNOW 12Peck, MI13 HOUR SNOWFALL TOTAL.
Feb 16, 8:30 AM ESTSNOW 6.5Dexter, MI15 HOUR SNOWFALL TOTAL

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Detroit, MI (KDTX), launched 12:00Z, 3.2 hours before the alert went out and 8 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 2021-02-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Detroit, MI at 12:00Z on 2021-02-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 73 square meters per square second.1939587897117Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
686 m above ground
0-6 km bulk shear
82 kt
0-1 km storm-relative helicity
73 m²/s²
0-3 km storm-relative helicity
189 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

516 
WWUS43 KDTX 151510
WSWDTX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Detroit/Pontiac MI
1010 AM EST Mon Feb 15 2021

MIZ053-054-060-160000-
/O.CAN.KDTX.WW.Y.0004.000000T0000Z-210216T1700Z/
/O.NEW.KDTX.WW.Y.0005.210215T2300Z-210216T1700Z/
Saginaw-Tuscola-Shiawassee-
Including the cities of Saginaw, Caro, and Owosso
1010 AM EST Mon Feb 15 2021

...WINTER WEATHER ADVISORY IN EFFECT FROM 6 PM THIS EVENING TO
NOON EST TUESDAY...

* WHAT...Snow expected. Total snow accumulations of 3 to 5 
  inches.

* WHERE...Saginaw, Tuscola and Shiawassee Counties.

* WHEN...From 6 PM this evening to noon EST Tuesday.

* IMPACTS...Plan on slippery road conditions. The hazardous
  conditions could impact the evening and especially the Tuesday 
  morning commute.

* ADDITIONAL DETAILS...Snow reintensifies toward 8 pm this 
  evening. A period of higher intensity snowfall is expected 
  overnight with an 3 to 5 inches expected before diminishing 
  Tuesday morning.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. 

Slow down and use caution while traveling. 

&&

$$

MIZ049-055-061-062-068-160000-
/O.UPG.KDTX.WW.Y.0004.000000T0000Z-210216T1700Z/
/O.NEW.KDTX.WS.W.0001.210215T2300Z-210216T1700Z/
Huron-Sanilac-Genesee-Lapeer-Livingston-
Including the cities of Bad Axe, Sandusky, Flint, Lapeer, 
and Howell
1010 AM EST Mon Feb 15 2021

...WINTER STORM WARNING IN EFFECT FROM 6 PM THIS EVENING TO NOON
EST TUESDAY...

* WHAT...Heavy snow expected. Total snow accumulations of 5 to 8
  inches.

* WHERE...Huron, Sanilac, Genesee, Lapeer and Livingston 
  Counties.

* WHEN...From 6 PM this evening to noon EST Tuesday.

* IMPACTS...Travel could be very difficult. The hazardous
  conditions could impact the evening and especially the Tuesday 
  morning commute.

* ADDITIONAL DETAILS...Snow reintensifies toward 8 pm this 
  evening. Snow becomes heavy at times tonight with an additional 
  5 to 8 inches expected before diminishing Tuesday morning. 
  Highest snowfall totals expected from the Lake Huron shoreline 
  southward through metro Detroit, Ann Arbor and near the Ohio 
  border. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. 

Slow down and use caution while traveling

&&

$$

MIZ063-069-070-075-076-082-083-160000-
/O.UPG.KDTX.WW.Y.0004.000000T0000Z-210216T1700Z/
/O.NEW.KDTX.WS.W.0001.210215T2300Z-210216T1700Z/
St. Clair-Oakland-Macomb-Washtenaw-Wayne-Lenawee-Monroe-
Including the cities of Port Huron, Pontiac, Warren, Ann Arbor, 
Detroit, Adrian, and Monroe
1010 AM EST Mon Feb 15 2021

...WINTER STORM WARNING IN EFFECT FROM 6 PM THIS EVENING TO NOON
EST TUESDAY...

* WHAT...Heavy snow expected. Total snow accumulations of 5 to 9
  inches.

* WHERE...St. Clair, Oakland, Macomb, Washtenaw, Wayne, Lenawee 
  and Monroe Counties.

* WHEN...From 6 PM this evening to noon EST Tuesday.

* IMPACTS...Travel could be very difficult. The hazardous
  conditions could impact the evening and especially the Tuesday 
  morning commute.

* ADDITIONAL DETAILS...Snow reintensifies toward 6 pm this 
  evening. Snow becomes heavy at times tonight with an additional 
  6 to 9 inches expected before diminishing Tuesday morning. 
  Highest snowfall totals expected from the Lake Huron shoreline 
  southward through metro Detroit, Ann Arbor and near the Ohio 
  border. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. 

Slow down and use caution while traveling

&&

$$

MIZ047-048-160000-
/O.NEW.KDTX.WW.Y.0005.210215T2300Z-210216T1700Z/
Midland-Bay-
Including the cities of Midland and Bay City
1010 AM EST Mon Feb 15 2021

...WINTER WEATHER ADVISORY IN EFFECT FROM 6 PM THIS EVENING TO
NOON EST TUESDAY...

* WHAT...Snow expected. Total snow accumulations of 2 to 4 
  inches.

* WHERE...Midland and Bay Counties.

* WHEN...From 6 PM this evening to noon EST Tuesday.

* IMPACTS...Plan on slippery road conditions. The hazardous
  conditions could impact the evening and especially the Tuesday 
  morning commute.

* ADDITIONAL DETAILS...Snow reintensifies toward 8 pm this
  evening. A period of higher intensity snowfall is expected
  overnight with an 2 to 4 inches expected before diminishing 
  Tuesday morning.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in 
your vehicle in case of an emergency.

Slow down and use caution while traveling. 

&&

$$
3 follow-up statements
444 
WWUS43 KDTX 152310
WSWDTX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Detroit/Pontiac MI
610 PM EST Mon Feb 15 2021

MIZ069-070-075-076-082-083-160930-
/O.CON.KDTX.WS.W.0001.000000T0000Z-210216T1700Z/
Oakland-Macomb-Washtenaw-Wayne-Lenawee-Monroe-
Including the cities of Pontiac, Warren, Ann Arbor, Detroit, 
Adrian, and Monroe
610 PM EST Mon Feb 15 2021

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL NOON EST
TUESDAY...

* WHAT...Heavy snow expected. Total snow accumulations of 6 to 10 
  inches.

* WHERE...Macomb, Washtenaw, Lenawee, Monroe, Oakland and Wayne 
  Counties.

* WHEN...Until noon EST Tuesday.

* IMPACTS...Travel could be very difficult. The hazardous 
  conditions could impact the morning or evening commute.

* ADDITIONAL DETAILS...Widespread snow will become heavy at times
  tonight. Highest snowfall rates are expected between 9 PM and 3
  AM with hourly snowfall rates reaching and exceeding 1 inch per
  hour. Snow will then weaken in intensity but continue through
  the morning commute. Total snowfall accumulations of 6 to 10
  inches are expected with highest amounts generally east of a
  line from Adrian to Livonia to Utica. Northwest winds of 20 to 
  25 mph may lead to areas of blowing snow particularly for those 
  locations of open exposure.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. 

&&

$$

MIZ061-062-068-160930-
/O.CON.KDTX.WS.W.0001.000000T0000Z-210216T1700Z/
Genesee-Lapeer-Livingston-
Including the cities of Flint, Lapeer, and Howell
610 PM EST Mon Feb 15 2021

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL NOON EST
TUESDAY...

* WHAT...Heavy snow expected. Total snow accumulations of 5 to 8 
  inches.

* WHERE...Lapeer, Livingston and Genesee Counties.

* WHEN...Until noon EST Tuesday.

* IMPACTS...Travel could be very difficult. The hazardous 
  conditions could impact the morning or evening commute.

* ADDITIONAL DETAILS...Widespread snow will become heavy at times
  tonight. Highest snowfall rates are expected between 9 PM and 3
  AM with hourly snowfall rates reaching and exceeding 1 inch per
  hour. Snow will then weaken in intensity but continue through
  the morning commute. Total snowfall accumulations of 5 to 8
  inches. Northwest winds of 20 to 25 mph may lead to areas of 
  blowing snow Tuesday particularly for those locations of open 
  exposure.
  

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. 

&&

$$

MIZ049-055-063-160930-
/O.CON.KDTX.WS.W.0001.000000T0000Z-210216T1700Z/
Huron-Sanilac-St. Clair-
Including the cities of Bad Axe, Sandusky, and Port Huron
610 PM EST Mon Feb 15 2021

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL NOON EST
TUESDAY...

* WHAT...Heavy snow expected. Total snow accumulations of 6 to 10 
  inches.

* WHERE...Huron, Sanilac and St. Clair Counties.

* WHEN...Until noon EST Tuesday.

* IMPACTS...Travel could be very difficult. The hazardous 
  conditions could impact the morning or evening commute.

* ADDITIONAL DETAILS...Widespread snow will become heavy at times
  tonight. Peak snowfall from the event is expected between 11 PM
  and 5 AM with hourly snowfall rates potentially reaching 1 to 2
  inches per hour. Total snow accumulations of 6 to 10 inches with
  locally higher amounts of 12 inches or possible near the Lake
  Huron shoreline. Northeast winds of 20 to 30 mph will lead to
  near whiteout conditions at times overnight. Blowing and 
  drifting of snow is also expected.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency. 

&&

$$

MIZ047-048-053-054-060-160930-
/O.CON.KDTX.WW.Y.0005.000000T0000Z-210216T1700Z/
Midland-Bay-Saginaw-Tuscola-Shiawassee-
Including the cities of Midland, Bay City, Saginaw, Caro, 
and Owosso
610 PM EST Mon Feb 15 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL NOON EST
TUESDAY...

* WHAT...Snow expected. Total snow accumulations of 3 to 5 
  inches.

* WHERE...Bay, Saginaw, Midland, Tuscola and Shiawassee Counties.

* WHEN...Until noon EST Tuesday.

* IMPACTS...Plan on slippery road conditions. The hazardous 
  conditions could impact the morning or evening commute.

* ADDITIONAL DETAILS...Widespread snow will develop this evening.
  Highest snowfall rates are expected between 10 PM and 5 AM. Snow
  will then weaken in intensity but continue through the morning
  commute. Total snowfall accumulations of 3 to 5 inches are
  expected. Northwest winds of 20 to 25 mph may lead to areas of
  blowing snow Tuesday particularly for those locations of open
  exposure.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling. 

&&

$$
040 
WWUS43 KDTX 160819
WSWDTX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Detroit/Pontiac MI
319 AM EST Tue Feb 16 2021

MIZ069-070-075-076-082-083-161700-
/O.CON.KDTX.WS.W.0001.000000T0000Z-210216T1700Z/
Oakland-Macomb-Washtenaw-Wayne-Lenawee-Monroe-
Including the cities of Pontiac, Warren, Ann Arbor, Detroit, 
Adrian, and Monroe
319 AM EST Tue Feb 16 2021

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL NOON EST TODAY...

* WHAT...Intervals of light to occasionally moderate snow will
  continue across the area this morning. Additional accumulation 
  of up to 2 inches remains possible. Northerly winds of 20 to 25 
  mph will lead to some blowing and drifting of snow during this 
  time.
 
* WHERE...Macomb, Washtenaw, Lenawee, Monroe, Oakland and Wayne 
  Counties.

* WHEN...Until noon EST Tuesday.

* IMPACTS...Travel could be very difficult with hazardous
  conditions impacting the Tuesday morning commute. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency.

&&

$$

MIZ061-062-068-161700-
/O.CON.KDTX.WS.W.0001.000000T0000Z-210216T1700Z/
Genesee-Lapeer-Livingston-
Including the cities of Flint, Lapeer, and Howell
319 AM EST Tue Feb 16 2021

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL NOON EST TODAY...

* WHAT...Intervals of light to moderate snow will continue across
  the area this morning. Additional accumulation of 2 to 3 inches
  remains possible. Northerly winds of 20 to 25 mph will lead to 
  some blowing and drifting of snow during this time.

* WHERE...Lapeer, Livingston and Genesee Counties.

* WHEN...Until noon EST Tuesday.

* IMPACTS...Travel could be very difficult with hazardous
  conditions impacting the Tuesday morning commute. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency.

&&

$$

MIZ049-055-063-161700-
/O.CON.KDTX.WS.W.0001.000000T0000Z-210216T1700Z/
Huron-Sanilac-St. Clair-
Including the cities of Bad Axe, Sandusky, and Port Huron
319 AM EST Tue Feb 16 2021

...WINTER STORM WARNING REMAINS IN EFFECT UNTIL NOON EST TODAY...

* WHAT...Widespread moderate to occasionally heavy snow will
  continue across the area this morning. Additional accumulation
  of 2 to 5 inches expected, with highest amounts near the lake
  huron shoreline. Northeast winds of 20 to 30 mph will lead to
  near whiteout conditions at times. Blowing and drifting of snow
  is also expected.

* WHERE...Huron, Sanilac and St. Clair Counties.

* WHEN...Until noon EST Tuesday.

* IMPACTS...Travel could be very difficult. The hazardous
  conditions could impact the morning or evening commute.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If you must travel, keep an extra flashlight, food, and water in
your vehicle in case of an emergency.

&&

$$

MIZ047-048-053-054-060-161700-
/O.CON.KDTX.WW.Y.0005.000000T0000Z-210216T1700Z/
Midland-Bay-Saginaw-Tuscola-Shiawassee-
Including the cities of Midland, Bay City, Saginaw, Caro, 
and Owosso
319 AM EST Tue Feb 16 2021

...WINTER WEATHER ADVISORY REMAINS IN EFFECT UNTIL NOON EST
TODAY...

* WHAT...Light to moderate snow will continue across the area this
  morning. Additional accumulation of 2 to 3 inches expected. 
  Northerly winds of 20 to 25 mph will lead to some blowing and 
  drifting of snow during this time.

* WHERE...Bay, Saginaw, Midland, Tuscola and Shiawassee Counties.

* WHEN...Until noon EST Tuesday.

* IMPACTS...Plan on slippery road conditions. The hazardous
  conditions could impact the Tuesday morning commute. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Slow down and use caution while traveling.

&&

$$
548 
WWUS43 KDTX 161639
WSWDTX

URGENT - WINTER WEATHER MESSAGE
National Weather Service Detroit/Pontiac MI
1139 AM EST Tue Feb 16 2021

MIZ069-070-075-076-082-083-161745-
/O.EXP.KDTX.WS.W.0001.000000T0000Z-210216T1700Z/
Oakland-Macomb-Washtenaw-Wayne-Lenawee-Monroe-
Including the cities of Pontiac, Warren, Ann Arbor, Detroit, 
Adrian, and Monroe
1139 AM EST Tue Feb 16 2021

...WINTER STORM WARNING WILL EXPIRE AT NOON EST TODAY...

Remaining light snow showers will diminish during the rest of the
day. Gusty north winds will continue to produce blowing snow into
the mid afternoon. These winds will also contribute to wind chills
around zero as temperatures remain in the teens.

$$

MIZ061-062-068-161745-
/O.EXP.KDTX.WS.W.0001.000000T0000Z-210216T1700Z/
Genesee-Lapeer-Livingston-
Including the cities of Flint, Lapeer, and Howell
1139 AM EST Tue Feb 16 2021

...WINTER STORM WARNING WILL EXPIRE AT NOON EST TODAY...

Remaining light snow showers will diminish during the rest of the
day. Gusty north winds will continue to produce blowing snow into
the mid afternoon. These winds will also contribute to wind chills
around zero as temperatures remain in the teens.

$$

MIZ049-055-063-161745-
/O.EXP.KDTX.WS.W.0001.000000T0000Z-210216T1700Z/
Huron-Sanilac-St. Clair-
Including the cities of Bad Axe, Sandusky, and Port Huron
1139 AM EST Tue Feb 16 2021

...WINTER STORM WARNING WILL EXPIRE AT NOON EST TODAY...

Lake effect snow showers will continue this afternoon, but
diminish in coverage and intensity with time. Additional
accumulations of up to an inch will be possible locally.
Gusty north winds will continue to produce blowing snow as well. 
These winds will also contribute to wind chills around zero as 
temperatures remain in the teens.

$$

MIZ047-048-053-054-060-161745-
/O.EXP.KDTX.WW.Y.0005.000000T0000Z-210216T1700Z/
Midland-Bay-Saginaw-Tuscola-Shiawassee-
Including the cities of Midland, Bay City, Saginaw, Caro, 
and Owosso
1139 AM EST Tue Feb 16 2021

...WINTER WEATHER ADVISORY WILL EXPIRE AT NOON EST TODAY...

Remaining light snow showers will diminish during the rest of the
day. Gusty north winds will continue to produce blowing snow into
the mid afternoon. These winds will also contribute to wind chills
around zero as temperatures remain in the teens.

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Feb 15, 10:10 AM ESTWinter Weather AdvisoryDTXBay, Midland, Saginaw, Shiawassee, Tuscola26 hr

Nearby

Winter Storm Warnings in Michigan, 2021Every winter storm warning in 2021

Sources

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