Alert archive / Michigan / Mesoscale Discussions in 2011
Mesoscale Discussion 182
The Storm Prediction Center issued this mesoscale discussion at Mar 4, 2011, 5:36 AM EST for 30 counties in Michigan. It was in force for 4 hr.
The area
The outline as issued.
The facts
- Issued
- Mar 4, 2011, 5:36 AM EST (10:36 UTC)
- Expired
- Mar 4, 2011, 9:30 AM EST
- In force
- 4 hr
- Issued by
- the Storm Prediction Center
All 30 counties
Alcona County, MI, Alpena County, MI, Antrim County, MI, Arenac County, MI, Bay County, MI, Benzie County, MI, Clare County, MI, Crawford County, MI, Gladwin County, MI, Grand Traverse County, MI, Iosco County, MI, Isabella County, MI, Kalkaska County, MI, Lake County, MI, Manistee County, MI, Mason County, MI, Mecosta County, MI, Midland County, MI, Missaukee County, MI, Montcalm County, MI, Montmorency County, MI, Muskegon County, MI, Newaygo County, MI, Oceana County, MI, Ogemaw County, MI, Osceola County, MI, Oscoda County, MI, Otsego County, MI, Roscommon County, MI, Wexford County, MI
The radar
The NCL Michigan radar (KAPX), 82 km from the middle of the area, began a volume at 10:34 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 00:00Z, 10.6 hours before the alert went out and 194 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
- 2392 m above ground
- 0-6 km bulk shear
- 42 kt
- 0-1 km storm-relative helicity
- 286 m²/s²
- 0-3 km storm-relative helicity
- 378 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
135
ACUS11 KWNS 041036
SWOMCD
SPC MCD 041036
MIZ000-041430-
MESOSCALE DISCUSSION 0182
NWS STORM PREDICTION CENTER NORMAN OK
0436 AM CST FRI MAR 04 2011
AREAS AFFECTED...CNTRL/NRN LOWER MI
CONCERNING...FREEZING RAIN
VALID 041036Z - 041430Z
AREAS OF FREEZING RAIN WILL OVERSPREAD CNTRL/NRN LOWER MI FROM THE
WEST AFTER 11Z AND CONTINUE THROUGH MUCH OF THE MORNING...WITH RATES
UP TO 0.05 INCH PER HOUR ANTICIPATED.
THE SHIELD OF RAIN THAT FORMED OVER PORTIONS OF WI AND NERN IA IN
RESPONSE TO LOW-LEVEL ISENTROPIC ASCENT IS FORECAST TO BE STEERED
E-NEWD ACROSS PORTIONS OF LOWER MI DURING THE MORNING HOURS. SFC
TEMPERATURES ACROSS CNTRL/NRN LOWER MI ARE EXPECTED TO REMAIN BELOW
FREEZING...RESULTING IN FREEZING RAIN. WHILE SLEET OR EVEN SNOW MAY
MIX WITH THE PRECIPITATION...ESPECIALLY ACROSS NRN AREAS...FORECAST
SOUNDINGS SUGGEST LIMITED POTENTIAL FOR ICE CRYSTAL GROWTH ALOFT
ESPECIALLY GIVEN WEAKENING/SHALLOW ASCENT. AS SUCH...FREEZING RAIN
IS FORECAST TO BE THE DOMINANT PRECIP TYPE. THE 08Z RUN OF THE
EXPERIMENTAL HRRR INDICATES LIQUID EQUIVALENT RATES UP TO 0.05 IN/HR
ACROSS THE DISCUSSION AREA...WITH THE PRECIP CONTINUING THROUGH MUCH
OF THE MORNING.
..COHEN.. 03/04/2011
...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...DTX...APX...GRR...
LAT...LON 43528388 43208552 43438650 44488649 44988581 45228443
44988322 44218313 43528388Nearby
Mesoscale Discussions in Michigan, 2011Every mesoscale discussion in 2011
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.