Alert archive / Michigan / Freeze Warnings in 2012
Freeze Warning 11, NWS Detroit, MI
NWS Detroit, MI issued this freeze warning at Apr 17, 2012, 1:32 PM EDT for 6 counties in Michigan. It took effect at Apr 18, 2012, 2:00 AM EDT. It was in force for 6 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 17, 2012, 1:32 PM EDT (17:32 UTC)
- In effect from
- Apr 18, 2012, 2:00 AM EDT
- Expired
- Apr 18, 2012, 8:00 AM EDT
- In force
- 6 hr
- Issued by
- NWS Detroit, MI
Counties Bay County, MI, Huron County, MI, Midland County, MI, Saginaw County, MI, Sanilac County, MI, Tuscola County, MI
The radar
The Detroit radar (KDTX), 99 km from the middle of the area, began a volume at 17:29 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
Detroit, MI (KDTX), launched 12:00Z, 5.5 hours before the alert went out and 97 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
- 788 m above ground
- 0-6 km bulk shear
- 77 kt
- 0-1 km storm-relative helicity
- -166 m²/s²
- 0-3 km storm-relative helicity
- -129 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this freeze 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 freeze warning went out at Apr 17, 1:23 PM EDT, 9 minutes earlier.
Area forecast discussion, Apr 17, 1:23 PM EDT, 9 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
123 PM EDT TUE APR 17 2012
.AVIATION...
//DISCUSSION...
FEW TO SCATTERED DIURNAL CU WILL MIX UP TO 5KFT THIS AFTERNOON, BUT
THE LACK OF SUFFICIENT BOUNDARY LAYER MOISTURE WILL MAKE THE
DEVELOPMENT OF CEILINGS UNLIKELY. THEREFORE, A MOSTLY CLEAR SKY
CONDITION CAN BE EXPECTED THROUGH THIS AFTERNOON AND TONIGHT HIGH
PRESSURE SLIDES THROUGH SOUTHEAST MICHIGAN, WITH LIGHT WINDS
FORECAST TO TURN NORTHEASTERLY LATE THIS AFTERNOON AS A LAKE BREEZE
RELEASES INLAND. WINDS WILL INCREASE TO AROUND 15 KTS OUT OF THE
SOUTHEAST BY MID MORNING TOMORROW AHEAD OF AN APPROACHING SYSTEM.
//DTW THRESHOLD THREATS...
* NONE
&&
.PREV DISCUSSION...ISSUED 337 AM EDT TUE APR 17 2012
DISCUSSION...
AN EXTENDED COLD SNAP LOOKS TO TAKE HOLD THIS WEEKEND INTO EARLY
NEXT WEEK AS AMPLIFIED LONGWAVE TROUGH/POTENTIAL CUTOFF UPPER LEVEL
LOW DEVELOPS OF THE EASTERN CONUS.
BEFORE WE EVEN GET THERE...WE START OUT COLD...AS 1028 MB SURFACE
HIGH SLOW SLIDES EAST THROUGH THE CENTRAL GREAT LAKES TODAY AND
TONIGHT. STRATUS CLOUDS CURRENTLY OVER/NEAR SAGINAW BAY HOLDING
STEADY (NO SOUTHWARD PROGRESSION)...THUS NO BIG CONCERNS FOR CLOUDS
TODAY (FEW TRANSIENT PATCHES POSSIBLE)...WHICH WILL ALLOW MAXES TO
MAKE IT INTO THE LOW TO MID 50S. FAVORABLE RADIATING NIGHT
TONIGHT...WITH MINS DOWN INTO THE LOW TO MID 30S MOST LOCATIONS. DAY
SHIFT CAN SORT OUT FREEZE VS FROST ADVISORY AREAS...BUT THUMB REGION
WILL LIKELY NEED A FREEZING WARNING BASED ON THE POSITION OF THE
RETREATING HIGH.
UPPER WAVE TRACKING THROUGH THE PACIFIC NORTHWEST AT THE PRESENT
TIME WILL BE REACHING LAKE SUPERIOR WEDNESDAY AFTERNOON. SOLID WARM
ADVECTION PATTERN DURING WEDNESDAY SHOULD SEND MAXES SOLIDLY INTO
THE 60S (IN LINE WITH LATEST MAV GUIDANCE)...AS NAM/GFS SHOW 925 MB
TEMPS RISING INTO THE LOWER TEENS. THE UPPER WAVE AND ASSOCIATED
SURFACE LOW WILL BE TRACKING NORTHEAST INTO ONTARIO...WITH LITTLE IF
ANY HEIGHT FALLS EXTENDING OVER THE SOUTHERN GREAT LAKES WEDNESDAY
NIGHT. THUS THE SURFACE COLD FRONT WILL TEND TO LOSE ITS
IDENTITY...AND CHANCES FOR RAINFALL APPEAR LOW.
THE SAME CAN NOT BE SAID FOR THURSDAY AND FRIDAY HOWEVER...AS
BAROCLINIC ZONE IN PLACE WILL LIKELY BECOME ACTIVE...AS DIGGING
TROUGH MOVES THROUGH THE PLAINS AND GULF OF MEXICO OPENS UP. ABOUT
THE ONLY QUESTION IS HOW STRONG THE WAVE RIPPLING ALONG THE FRONT
WILL BE AS IT MOVES THROUGH THE AREA..AND WHETHER OR NOT SOUTHERN
AREAS OF THE CWA WILL PUNCH INTO THE WARM SECTOR THURSDAY NIGHT INTO
FRIDAY MORNING (MAY NEED TO ADD THUNDERSTORMS TO THE FORECAST).
MEANWHILE...WILL HAVE TO WATCH THE POLAR VORTEX OVER HUDSON BAY
CLOSELY AS WELL...AS ENOUGH COLD AIR MAY INFILTRATE THE GREAT LAKES
REGION TO SUPPORT SNOW...BUT CHANCE IS TOO LOW TO INCLUDE IN THE
FORECAST AT THIS POINT. A TIGHT BAROCLINIC ZONE INDEED.
MARINE...
WEST-NORTHWEST WINDS WILL CONTINUE TO DIMINISH TODAY AS HIGH
PRESSURE BUILDS INTO THE AREA. WAVE HEIGHTS WILL BUILD BRIEFLY
ALONG SOUTHERN LAKE HURON THIS MORNING. OTHERWISE FAVORABLE MARINE
CONDITIONS WILL EXIST THROUGH EARLY WEDNESDAY AS THE SURFACE HIGH
DRIFTS THROUGH. LOW PRESSURE LIFTING ACROSS SOUTHERN ONTARIO WILL
DRAG A COLD FRONT THROUGH WEDNESDAY NIGHT. BRIEF INCREASING IN
SOUTH-SOUTHEASTERLY WINDS IN ADVANCE OF THIS FRONT WEDNESDAY
AFTERNOON/EVENING.
&&
.DTX WATCHES/WARNINGS/ADVISORIES...
MI...FREEZE WARNING...MIZ047-MIZ048-MIZ049-MIZ053-MIZ054-MIZ055...FROM 2
AM WEDNESDAY TO 8 AM WEDNESDAY.
FROST ADVISORY...MIZ060-MIZ061-MIZ062-MIZ063-MIZ068-MIZ069-MIZ070-
MIZ075...FROM 2 AM WEDNESDAY TO 8 AM WEDNESDAY.
LAKE HURON...NONE.
LAKE ST CLAIR...NONE.
MI WATERS OF LAKE ERIE...NONE.
&&
AVIATION.....JVC
SHORT TERM...JVC
LONG TERM....HLO
MARINE.......SF/MR
YOU CAN OBTAIN YOUR LATEST NATIONAL WEATHER SERVICE FORECASTS ONLINE
AT WWW.WEATHER.GOV/DETROIT (ALL LOWER CASE).Hazardous weather outlook, Apr 17, 4:03 AM EDT, 9 hours 29 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI 403 AM EDT TUE APR 17 2012 MIZ047>049-053>055-060>063-068>070-075-076-082-083-180815- MIDLAND-BAY-HURON-SAGINAW-TUSCOLA-SANILAC-SHIAWASSEE-GENESEE-LAPEER- ST. CLAIR-LIVINGSTON-OAKLAND-MACOMB-WASHTENAW-WAYNE-LENAWEE-MONROE- 403 AM EDT TUE APR 17 2012 THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHEAST MICHIGAN. .DAY ONE...TODAY AND TONIGHT FROST IS LIKELY ACROSS MUCH OF SOUTHEAST MICHIGAN TONIGHT...WITH TEMPERATURES FALLING BELOW FREEZING ACROSS THE THUMB REGION. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED TODAY AND TONIGHT. LCZ422-423-460-LEZ444-LHZ361>363-422-442-443-462>464-180815- 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- INNER SAGINAW BAY SW OF POINT AU GRES TO BAY PORT 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- 403 AM EDT TUE APR 17 2012 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF LAKE ERIE...LAKE HURON AND LAKE ST CLAIR. .DAY ONE...TODAY AND TONIGHT NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED TODAY AND TONIGHT. LHZ421-441-180815- OUTER SAGINAW BAY SW OF ALABASTER TO PORT AUSTIN MI TO INNER SAGINAW BAY-PORT AUSTIN TO HARBOR BEACH MI- 403 AM EDT TUE APR 17 2012 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF LAKE HURON. .DAY ONE...TODAY AND TONIGHT SMALL CRAFT ADVISORIES ARE IN EFFECT FOR THIS MORNING DUE TO HIGHER WAVES. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED TODAY AND TONIGHT. SF 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 |
|---|---|---|---|---|
| Apr 16, 9:53 PM EDT | Small Craft Advisory | DTX | 6 hr | |
| Apr 17, 3:40 AM EDT | Small Craft Advisory | DTX | 7 hr | |
| Apr 17, 1:32 PM EDT | Frost Advisory | DTX | Genesee, Lapeer, Livingston, Macomb, Oakland, Saint Clair and 2 more | 18 hr |
Nearby
Freeze Warnings in Michigan, 2012Every freeze warning 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.