Alert archive / Indiana / Dense Fog Advisories in 2012

Dense Fog Advisory 2, NWS Northern Indiana

February 23, 201210 counties in Indiana; 8 counties in Ohio; 4 counties in Michigan

NWS Northern Indiana issued this dense fog advisory at Feb 23, 2012, 2:46 AM EST for 10 counties in Indiana; 8 counties in Ohio; 4 counties in Michigan. It was in force for 8 hr.

The area

The counties it named.

The facts

Issued: Feb 23, 2012, 2:46 AM EST (07:46 UTC)
Expired: Feb 23, 2012, 11:00 AM EST
In force: 8 hr
Issued by: NWS Northern Indiana

All 22 counties

Adams County, IN, Allen County, IN, DeKalb County, IN, Elkhart County, IN, Huntington County, IN, LaGrange County, IN, Noble County, IN, Steuben County, IN, Wells County, IN, Whitley County, IN, Branch County, MI, Cass County, MI, Hillsdale County, MI, Saint Joseph County, MI, Allen County, OH, Defiance County, OH, Fulton County, OH, Henry County, OH, Paulding County, OH, Putnam County, OH, Van Wert County, OH, Williams County, OH

The radar

The Northern Indiana radar (KIWX), 63 km from the middle of the area, began a volume at 07:46 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, 7.8 hours before the alert went out and 198 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 966 m above ground
0-6 km bulk shear: 58 kt
0-1 km storm-relative helicity: 51 m²/s²
0-3 km storm-relative helicity: 125 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this dense fog advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Northern Indiana wrote its last area forecast discussion before this dense fog advisory went out at Feb 23, 12:12 AM EST, 2 hours 34 minutes earlier.

Area forecast discussion, Feb 23, 12:12 AM EST, 2 hours 34 minutes before

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Hazardous weather outlook, Feb 22, 4:42 PM EST, 10 hours 4 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE NORTHERN INDIANA
442 PM EST WED FEB 22 2012

INZ003>009-012>018-020-022>027-032>034-MIZ077>081-OHZ001-002-004-005-
015-016-024-025-232145-
LA PORTE-ST. JOSEPH IN-ELKHART-LAGRANGE-STEUBEN-NOBLE-DE KALB-STARKE-
PULASKI-MARSHALL-FULTON IN-KOSCIUSKO-WHITLEY-ALLEN IN-WHITE-CASS IN-
MIAMI-WABASH-HUNTINGTON-WELLS-ADAMS-GRANT-BLACKFORD-JAY-BERRIEN-
CASS MI-ST. JOSEPH MI-BRANCH-HILLSDALE-WILLIAMS-FULTON OH-DEFIANCE-
HENRY-PAULDING-PUTNAM-VAN WERT-ALLEN OH-
INCLUDING THE CITIES OF...MICHIGAN CITY...LA PORTE...SOUTH BEND...
MISHAWAKA...ELKHART...GOSHEN...LAGRANGE...TOPEKA...ANGOLA...
KENDALLVILLE...LIGONIER...AUBURN...GARRETT...KNOX...NORTH JUDSON...
WINAMAC...FRANCESVILLE...PLYMOUTH...BREMEN...ROCHESTER...WARSAW...
WINONA LAKE...COLUMBIA CITY...SOUTH WHITLEY...FORT WAYNE...
MONTICELLO...BROOKSTON...LOGANSPORT...PERU...WABASH...
NORTH MANCHESTER...HUNTINGTON...BLUFFTON...OSSIAN...DECATUR...
BERNE...MARION...HARTFORD CITY...MONTPELIER...PORTLAND...NILES...
BENTON HARBOR...ST. JOSEPH...BUCHANAN...DOWAGIAC...CASSOPOLIS...
STURGIS...THREE RIVERS...COLDWATER...HILLSDALE...BRYAN...WAUSEON...
ARCHBOLD...DEFIANCE...NAPOLEON...PAULDING...ANTWERP...OTTAWA...
PANDORA...VAN WERT...DELPHOS...LIMA
442 PM EST WED FEB 22 2012 /342 PM CST WED FEB 22 2012/

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTHWEST OHIO...
NORTHERN INDIANA AND SOUTHWEST LOWER MICHIGAN.

.DAY ONE...TONIGHT

A MIX OF RAIN AND SNOW WILL AFFECT NORTHERN INDIANA...SOUTHERN
LOWER MICHIGAN...AND NORTHWEST OHIO THIS EVENING ESPECIALLY NORTH
OF ROUTE 6. ADDITIONAL SNOW ACCUMULATIONS ARE EXPECTED TO BE LESS
THAN A HALF INCH.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

A BRIEF PERIOD OF SNOW IS EXPECTED TO LIFT FROM SOUTH TO NORTH
ACROSS THE AREA ON THURSDAY. SLUSHY SNOW ACCUMULATIONS OF UP TO AN
INCH ARE POSSIBLE BY THURSDAY EVENING.

SIGNIFICANT SNOW ACCUMULATIONS ARE POSSIBLE THURSDAY NIGHT INTO
FRIDAY ESPECIALLY NORTH OF ROUTE 6 AS ANOTHER STORM SYSTEM
STRENGTHENS ACROSS THE AREA. MOST OF THE SNOW ACCUMULATION IS
EXPECTED FROM THURSDAY EVENING THROUGH FRIDAY MORNING. THERE IS
STILL MUCH UNCERTAINTY REGARDING THE EXACT TRACK OF THIS SYSTEM
AND PRECIPITATION TYPES...BUT THERE IS A POTENTIAL OF SEVERAL
INCHES OF SNOW ACCUMULATION ACROSS EXTREME NORTHERN INDIANA...FAR
NORTHWEST OHIO...AND SOUTHERN LOWER MICHIGAN GENERALLY NORTH OF
ROUTE 6 DURING THIS PERIOD.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NEEDED TODAY.

&&

STAY TUNED TO NOAA WEATHER RADIO FOR FURTHER DETAILS OR UPDATES...OR
CHECK OUR WEB SITE AT WEATHER.GOV/IWX

LMZ043-046-232145-
NEW BUFFALO MI TO ST JOSEPH MI-MICHIGAN CITY IN TO NEW BUFFALO MI-
442 PM EST WED FEB 22 2012

THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE NEARSHORE WATERS OF
SOUTHEASTERN LAKE MICHIGAN.

.DAY ONE...TONIGHT

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

HAZARDOUS CONDITIONS FOR SMALL CRAFT ARE POSSIBLE LATE FRIDAY
NIGHT INTO SATURDAY.

&&

STAY TUNED TO NOAA WEATHER RADIO FOR FURTHER DETAILS OR UPDATES...OR
CHECK OUR WEB SITE AT WEATHER.GOV/IWX

The office that day

Everything else NWS Northern Indiana issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Feb 22, 10:00 PM EST	Winter Storm Watch	IWX	Elkhart, LaGrange, Marshall, Starke, Steuben	18 hr
Feb 23, 4:26 AM EST	Small Craft Advisory	IWX		66 hr
Feb 23, 4:10 PM EST	Winter Weather Advisory	IWX	Elkhart, LaGrange, Marshall, Starke, Steuben	35 hr

Nearby

Dense Fog Advisories in Indiana, 2012 Dense Fog Advisories in Ohio, 2012 Dense Fog Advisories in Michigan, 2012 Every dense fog advisory 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.