Winter Storm in Wisconsin, April 3 to 4, 2007

Name: Winter Storm in Wisconsin, April 3 to 4, 2007
Start: 2007-04-03T15:00
End: 2007-04-04T19:00
Location: Wisconsin

April 3 to 4, 2007 · NWS GRB · 1 event in 1 county or zone

Low pressure deepened as it moved across Wisconsin. An area of heavy snow, enhanced by Lake Superior, fell across far northern Wisconsin.

Where it happened

Every event with a place to put it; 1 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.

Tornadoes
Tropical storms and surge
Floods
Wind
Hail
Winter weather
Heat and drought
Cold
Fire, smoke and dust
Marine and coastal
Other

Open the live radar over this ground

The toll

Deaths: 0
Injuries: 0
Property damage: None recorded
Crop damage: None recorded
Events: 1

Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.

What happened

The episode as NWS GRB wrote it up.

Low pressure deepened as it moved across Wisconsin. An area of heavy snow, enhanced by Lake Superior, fell across far northern Wisconsin. Winds gusted over 40 mph at times. Snowfall totals were generally in the 5 to 8 inch range in Vilas County. The highest snow total from the storm was 8.5 inches at Presque Isle and Phelps.

What forecasters said that day

The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Green Bay, WI wrote its last area forecast discussion before the first event at Apr 3, 2:30 PM CST, 30 minutes earlier.

Area forecast discussion, Apr 3, 2:30 PM CST, 30 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GREEN BAY WI
330 PM CDT TUE APR 3 2007

.SHORT TERM...WILL REDUCE THUNDER WORDING TO ISOLATED EARLY EVENING BUT
WILL NOT PULL OUT COMPLETELY DUE TO ISOLATED REPORTS WITHIN POORLY
DEFINED SRN EDGE REGION.

THIS SRN EDGE LEADS TO THE NEXT PROBLEM. TAMDAR SOUNDINGS TODAY INDICATE
A MUCH WARMER AIRMASS THAN PROGGED WORKED INTO NRN WISCONSIN AND AS A
RESULT MAINLY RAIN WAS FALLING OVER MUCH OF THE WARNING AREA.  HOWEVER
DEEPENING SYSTEM WILL EVENTUALLY BE COLD ENOUGH FOR SNOW THIS EVENING AS
H7 TEMPS FALL TO LESS THAN -10 C OVERNIGHT.  DUE TO LESSER AMOUNTS
ANTICIPATED NOW...WILL SHIFT HEADLINES NORTH A TIER OF COUNTIES.  FOREST
COUNTY WILL CONTINUE TO BE IN A WARNING BUT THIS WILL MAINLY BE FOR THE
NORTH HALF.  WHERE THE AIRMASS FINALLY DID GET COLD ENOUGH FOR OVER NW
WISCONSIN...SNOW ACCUM UP TO 3 INCHES THIS AFTERNOON.  WILL KEEP LINCOLN
AND LANGLADE IN THE ADVISORY AREA BUT AGAIN THIS WILL BE MAINLY FOR THE
NRN HALF.

CONSIDERED A WINTER TYPE HEADLINE FOR DOOR COUNTY FOR A COMBO OF SNOW
AND WIND BUT WILL ISSUED A WIND ADVISORY DUE TO LATEST PROGS KEEP
BRUNT OF THE PCPN NORTH.  WILL ALSO ADD MUCH OF EC WI IN THE WIND
ADVISORY FOR WEDNESDAY. ADIABATIC SOUNDING COULD MIX HIGHER WINDS DOWN
ALTHOUGH CLOUD COVER MAY INHIBIT.

.LONG TERM...WEDNESDAY NITE THRU NEXT TUESDAY. FORECAST FOCUS ON
PRECIPITATION CHANCES THRU PERIOD.

THE REGION REMAINS IN A NORTHWEST CYCLONIC FLOW THRU THE WEEKEND WITH A
FAVORABLE DIRECTION FOR LAKE ENHANCED SNOWFALL ACROSS PORTIONS OF NORTH
CENTRAL WISCONSIN. THE SOUTHERN PORTION OF THE CWA WILL HAVE LESS
MOISTURE TO WORK WITH SO WILL KEEP CHANCES FAIRLY LOW ACROSS THIS
PORTION OF THE AREA. CURRENT FORECAST REFLECTS THESE TRENDS SO WILL NOT
CHANGE PREVIOUS FORECAST MUCH. A RIDGE OF HIGH PRESSURE WILL END THE
SNOW CHANCES BY LATE SUNDAY.

THE RIDGE WILL KEEP THE WEATHER DRY ON MONDAY AS ANOTHER LOW PRESSURE
SYSTEM COMES IN FROM SOUTHERN CANADA. THE MODELS DIFFER SIGNIFICANTLY ON
THE TIMING OF THIS SYSTEM AS THE GFS BRINGS TWO WEAKER LOWS THRU THE
REGION WITH PRECIP COMING IN AS EARLY AS MONDAY NITE. THE DGEX AND GEM
MODELS HAVE ONE STRONGER LOW AND HOLD OFF PRECIP UNTIL TUESDAY. GIVEN
THE AGREEMENT WILL SIDE WITH THE DGEX/GEM MODELS AND HOLD OFF RAIN UNTIL
TUESDAY. SINCE THE AREA WILL BE IN SOUTHERLY FLOW WITH A FAIRLY STRONG
LOW WILL PUT THUNDER IN THE GRIDS AS WELL.

&&

.AVIATION...IFR CIGS/VIS...OCNL LIFR WITH LCL VLIFR CIGS/VIS TONIGHT AND
WEDNESDAY AS LOW PRESSURE SYSTEM MOVES THRU THE WESTERN GREAT LAKES.
WINDS WILL INCREASE SIGNIFICANTLY AFT 12Z...ESP ACRS EAST CENTRAL WI.

&&

.GRB WATCHES/WARNINGS/ADVISORIES...

WINTER STORM WARNING UNTIL 9 AM WEDNESDAY WIZ005-011>012.

SNOW AND BLOWING SNOW ADVISORY UNTIL 7 AM WEDNESDAY WIZ011-018-019.

SNOW AND BLOWING SNOW ADVISORY FROM 9 PM THIS EVENING UNTIL 9 AM
WEDNESDAY WIZ013-021-073.

WIND ADVISORY FROM 4 AM WEDNESDAY TO 3 PM WEDNESDAY
WIZ022-038>040-048>050.

&&

TDH/KURIMSKI
WEATHER.GOV/GREENBAY

Hazardous weather outlook, Apr 3, 4:30 AM CST, 10 hours 30 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE GREEN BAY WI
530 AM CDT TUE APR 3 2007

WIZ005-010>013-018>022-030-031-035>040-045-048>050-073-074-041100-
VILAS-ONEIDA-FOREST-FLORENCE-NORTHERN MARINETTE-SOUTHERN MARINETTE-
LINCOLN-LANGLADE-MENOMINEE-NORTHERN OCONTO-SOUTHERN OCONTO-DOOR-
MARATHON-SHAWANO-WOOD-PORTAGE-WAUPACA-OUTAGAMIE-BROWN-KEWAUNEE-WAUSHARA-
WINNEBAGO-CALUMET-MANITOWOC-
530 AM CDT TUE APR 3 2007

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH CENTRAL AND NORTHEAST
WISCONSIN.

.DAY ONE...TODAY AND TONIGHT

SNOW IS EXPECTED ACROSS THE FAR NORTH TODAY AND TONIGHT...WITH RAIN
AND THUNDERSTORMS CHANGING TO SNOW ACROSS THE REST OF THE AREA. THE
THUNDERSTORMS ARE NOT EXPECTED TO BE SEVERE. BE SURE TO CHECK THE
LATEST FORECAST FOR THE EXPECTED SNOW TOTALS FOR THE NORTH.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

LAKE EFFECT SNOW SHOWERS OR FLURRIES ARE POSSIBLE WEDNESDAY NIGHT
THROUGH SUNDAY ACROSS NORTHERN WISCONSIN. MINOR SNOW ACCUMULATIONS ARE
POSSIBLE...MAINLY IN THE SNOWBELT REGION OF VILAS COUNTY.

.SPOTTER INFORMATION STATEMENT...

SPOTTERS ARE REQUESTED TO REPORT SNOWFALL TOTALS TO THE NATIONAL WEATHER
SERVICE IN GREEN BAY.

LMZ521-522-541>543-564-041100-
THE BAY OF GREEN BAY SOUTH OF A LINE FROM CEDAR RIVER MI TO ROCK ISLAND
PASSAGE-LAKE MICHIGAN FROM WASHINGTON ISLAND TO SHEBOYGAN-THE ADJOINING
WISCONSIN WATERS OF LAKE MICHIGAN OUT TO MID-LAKE-
530 AM CDT TUE APR 3 2007

THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE WATERS OF CENTRAL AND
SOUTHERN GREEN BAY...AND LAKE MICHIGAN FROM ROCK ISLAND PASSAGE
TO SHEBOYGAN.

.DAY ONE...TODAY AND TONIGHT

CONDITIONS HAZARDOUS TO SMALL CRAFT ARE EXPECTED TO DEVELOP TODAY AND
CONTINUE INTO TONIGHT. GALES ARE EXPECTED OVER THE OPEN WATERS OF THE
LAKE STARTING TONIGHT.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

CONDITIONS HAZARDOUS TO SMALL CRAFT WILL CONTINUE OVER THE NEARSHORE
WATERS...AND GALES WILL CONTINUE OVER THE OPEN WATERS...INTO WEDNESDAY.

SKOWRONSKI/MG
WEATHER.GOV/GREENBAY

The radar

The national radar mosaic for the moment the first event began.

Open the radar archive at this moment

Event by event

1 winter storm. Local standard time, as filed.

Winter Storm, Vilas

When: April 3, 3:00 PM CST to April 4, 7:00 PM CST
Where: Vilas forecast zone
Reported by: Public
Coordinates: 46.053, -89.515 (the zone’s center; the record gives no point)

What these are

Winter Storm: A storm that brought snow, sleet or freezing rain at warning levels, usually over several hours or days.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

Every storm in Wisconsin in 2007 Every state in 2007 This day in weather history Warnings in Wisconsin, April 2007

Sources

NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 27439.