Alert archive / Indiana / Mesoscale Discussions in 2014
Mesoscale Discussion 49
The Storm Prediction Center issued this mesoscale discussion at Feb 1, 2014, 7:14 AM EST for 21 counties in Indiana; 17 counties in Michigan; Fulton County, Williams County, Ohio. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- Feb 1, 2014, 7:14 AM EST (12:14 UTC)
- Expired
- Feb 1, 2014, 12:15 PM EST
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
All 40 counties
Cass County, IN, DeKalb County, IN, Elkhart County, IN, Fulton County, IN, Jasper County, IN, Kosciusko County, IN, LaGrange County, IN, Lake County, IN, LaPorte County, IN, Marshall County, IN, Miami County, IN, Newton County, IN, Noble County, IN, Porter County, IN, Pulaski County, IN, Saint Joseph County, IN, Starke County, IN, Steuben County, IN, Wabash County, IN, White County, IN, Whitley County, IN, Berrien County, MI, Branch County, MI, Calhoun County, MI, Cass County, MI, Hillsdale County, MI, Ingham County, MI, Jackson County, MI, Kalamazoo County, MI, Lenawee County, MI, Livingston County, MI, Macomb County, MI, Monroe County, MI, Oakland County, MI, Saint Clair County, MI, Saint Joseph County, MI, Washtenaw County, MI, Wayne County, MI, Fulton County, OH, Williams County, OH
The radar
The Northern Indiana radar (KIWX), 76 km from the middle of the area, began a volume at 12:13 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, 0.2 hours before the alert went out and 166 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
- 464 m above ground
- 0-6 km bulk shear
- 93 kt
- 0-1 km storm-relative helicity
- 144 m²/s²
- 0-3 km storm-relative helicity
- 305 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
963
ACUS11 KWNS 011215
SWOMCD
SPC MCD 011214
MIZ000-OHZ000-INZ000-011715-
MESOSCALE DISCUSSION 0049
NWS STORM PREDICTION CENTER NORMAN OK
0614 AM CST SAT FEB 01 2014
AREAS AFFECTED...NRN INDIANA...S CENTRAL AND SE LOWER MI
CONCERNING...HEAVY SNOW
VALID 011214Z - 011715Z
SUMMARY...A BAND OF MODERATE-HEAVY SNOWFALL WITH RATES NEAR 1 INCH
PER HOUR WILL CONTINUE TO DEVELOP NEWD ACROSS NRN INDIANA AND LOWER
MI THIS MORNING...AND PERSIST INTO EARLY AFTERNOON. THE ZONE OF
FREEZING RAIN TO THE S WILL SHRINK AS WARMING OCCURS FROM SE-NW
ACROSS INDIANA/OH THIS MORNING.
DISCUSSION...A WELL-DEVELOPED BAND OF SNOW IS SPREADING NEWD FROM NE
IL INTO NW INDIANA...AND THIS TREND WILL CONTINUE ENEWD OVER
SRN/SERN LOWER MI THROUGH THE REMAINDER OF THE MORNING. THE SNOW
BAND IS BEING SUPPORTED BY STRONG LOW-LEVEL WAA AND MOISTURE
TRANSPORT ON THE NOSE OF A 45-50 KT SWLY LLJ...AND THIS REGIME WILL
SHIFT ENEWD THROUGH THE MORNING IN TANDEM WITH SURFACE CYCLONE NOW
APPROACHING CENTRAL MO. A DEEP SUB-FREEZING ISOTHERMAL LAYER AND
THE INFLUX OF LOW-MIDLEVEL MOISTURE WILL SUPPORT AOA 1 INCH PER HOUR
SNOWFALL RATES. S OF THE HEAVIER SNOW BAND...WARMING LOW-LEVEL
TEMPERATURES WILL RESULT IN A QUICKLY SHRINKING ZONE OF FREEZING
RAIN AND A SHARPER TRANSITION ZONE FROM FREEZING/RAIN TO SNOW BY
LATE MORNING.
..THOMPSON.. 02/01/2014
...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...CLE...DTX...IWX...GRR...IND...LOT...
LAT...LON 42088313 41678394 40668618 40558703 40748746 41158752
41568746 41838691 42158605 42698436 43018311 43088256
42848241 42088313Nearby
Mesoscale Discussions in Indiana, 2014Mesoscale Discussions in Michigan, 2014Mesoscale Discussions in Ohio, 2014Every mesoscale discussion in 2014
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.