Alert archive / Michigan / Winter Storm Watches in 2012
Winter Storm Watch 2, NWS Detroit, MI
NWS Detroit, MI issued this winter storm watch at Dec 25, 2012, 3:54 AM EST for 5 counties in Michigan. It took effect at Dec 26, 2012, 12:00 PM EST. It was in force for .
The area
The counties it named.
The facts
- Issued
- Dec 25, 2012, 3:54 AM EST (08:54 UTC)
- In effect from
- Dec 26, 2012, 12:00 PM EST
- Expired
- Dec 25, 2012, 4:03 PM EST
- In force
- Issued by
- NWS Detroit, MI
Counties Lenawee County, MI, Macomb County, MI, Monroe County, MI, Saint Clair County, MI, Wayne County, MI
The radar
The Detroit radar (KDTX), 43 km from the middle of the area, began a volume at 08:55 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
Cncnati-Daytn, OH (KILN), launched 00:00Z, 8.9 hours before the alert went out and 327 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.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 446 m above ground
- 0-6 km bulk shear
- 62 kt
- 0-1 km storm-relative helicity
- 61 m²/s²
- 0-3 km storm-relative helicity
- 84 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this winter storm watch 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 watch went out at Dec 25, 3:51 AM EST, 3 minutes earlier.
Area forecast discussion, Dec 25, 3:51 AM EST, 3 minutes before
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</html>Hazardous weather outlook, Dec 24, 4:00 PM EST, 11 hours 54 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI 400 PM EST MON DEC 24 2012 MIZ047>049-053>055-060>063-068>070-075-076-082-083-250915- MIDLAND-BAY-HURON-SAGINAW-TUSCOLA-SANILAC-SHIAWASSEE-GENESEE-LAPEER- ST. CLAIR-LIVINGSTON-OAKLAND-MACOMB-WASHTENAW-WAYNE-LENAWEE-MONROE- 400 PM EST MON DEC 24 2012 THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHEAST MICHIGAN. .DAY ONE... TONIGHT LIGHT SNOW WILL SPREAD OVER THE REGION DURING THE EVENING. TOTAL SNOW ACCUMULATION WILL BE AN INCH OR LESS TONIGHT BUT A BURST OF HEAVIER SNOW SHOWERS WILL REDUCE VISIBILITY FOR MOTORISTS AT TIMES BEFORE THE SNOW ENDS. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY A WINTER STORM WILL IMPACT SOUTHEAST MICHIGAN WEDNESDAY THROUGH WEDNESDAY NIGHT. THE MAIN CONCERN WITH THIS SYSTEM WILL BE WITH DIFFICULTIES FOR THOSE PLANNING TRAVEL THE DAY AFTER CHRISTMAS. THE RESPONSIBLE LOW PRESSURE SYSTEM WILL DEVELOP FROM THE WESTERN GULF COAST TUESDAY AND DEEPEN INTO THE OHIO VALLEY AND MID ATLANTIC STATES BY LATE WEDNESDAY. BASED ON THE LOW MAKING IT INTO SOUTHERN OHIO...THE LATEST WEATHER DATA INDICATES A 3 TO 6 INCH SNOWFALL... WITH THE HIGHEST TOTALS OCCURRING ACROSS EASTERN AREAS...OR ALONG A MONROE...DETROIT...SANDUSKY LINE. NORTHEAST WINDS OF 20 TO 30 MPH WILL ALSO EXACERBATE TRAVEL DIFFICULTIES...AS BLOWING AND DRIFTING SNOW COULD REDUCE VISIBILITY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED TONIGHT. LCZ422-423-460-LEZ444-LHZ361>363-421-422-441>443-462>464-250915- 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- 400 PM EST MON DEC 24 2012 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF LAKE ERIE...LAKE HURON AND LAKE ST CLAIR. .DAY ONE... TONIGHT NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY A STRONG LOW PRESSURE SYSTEM IS EXPECTED TO DEVELOP NEAR THE GULF COAST TUESDAY AND MOVE TOWARD THE GREAT LAKES WEDNESDAY INTO THURSDAY. NORTHEAST WINDS INCREASING TO 30 KNOTS ON WEDNESDAY WILL NECESSITATE SMALL CRAFT ADVISORIES FOR THE NEARSHORE WATERS OF SOUTHERN LAKE HURON. SNOW WILL ALSO SPREAD OVER THE SOUTHERN LAKES REGION AND LIKELY PRESENT VISIBILITY RESTRICTIONS FOR MARINE INTERESTS. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED TONIGHT. BT 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.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 25, 3:38 AM EST | Small Craft Advisory | DTX | 3 days | |
| Dec 25, 3:50 PM EST | Gale Warning | DTX | 30 hr | |
| Dec 25, 4:03 PM EST | Winter Weather Advisory | DTX | Genesee, Huron, Lapeer, Lenawee, Livingston, Macomb and 8 more | 38 hr |
Nearby
Winter Storm Watches in Michigan, 2012Every winter storm watch in 2012
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.