A waterspout touched down on the northwest part of Lake Winnibigoshish on May 26th. The waterspout traveled northeast for 10 minutes and was associated with some showers and thunderstorms in the area.
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The episode as NWS DLH wrote it up.
A waterspout touched down on the northwest part of Lake Winnibigoshish on May 26th. The waterspout traveled northeast for 10 minutes and was associated with some showers and thunderstorms in the area. No damage was reported.
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 Duluth, MN wrote its last area forecast discussion before the first event at May 26, 9:41 AM CST, 3 hours 29 minutes earlier.
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE DULUTH MN
1041 AM CDT SAT MAY 26 2007
.UPDATE...
ADJUSTED POPS FOR CURRENT FRONTAL POSITION AND RADAR TRENDS. WV
SAT IMAGERY SHOWS A TIGHT MID LEVEL CIRCULATION ENTERING THE NW
CORNER OF MN IN SYNC WITH THE SFC LOW. THE DRY SLOT AS SEEN ON VIS
SAT EXTENDS FROM DETROIT LAKES...SOUTH ALONG THE SFC FRONT TO
GLENWOOD AND RED WOOD FALLS. A NARROW LINE OF SHOWERS AND
THUNDERSTORMS HAVE DEVELOPED ALONG THE PRE FRONTAL TROUGH AND
CURRENTLY EXTEND FROM RED LAKE...TO GRAND RAPIDS...AND AITKIN.
ADDITIONAL STORMS ARE EXPECTED TO FILL IN ALONG THIS BOUNDARY THIS
AFTERNOON...MAINLY AFFECTING AREAS FROM THE TWIN PORTS TO
HINCKLEY...AND EAST INCLUDING NW WIS. THE STRENGTH OF THESE STORMS
WILL GREATLY DEPEND ON CLOD COVER THIS MORNING AND STABILITY IN
PLACE.
&&
.PREV DISCUSSION... /ISSUED 343 AM CDT SAT MAY 26 2007/
DISCUSSION...MAIN FOCUS FOR TODAY IS POSSIBLE SEVERE STORMS.
FAIRLY QUIET SO FAR THIS MORNING ACROSS THE CWA...BUT A RATHER
VIGOROUS SYSTEM IN THE CENTRAL DAKOTAS WILL BRING SHOWERS AND
THUNDERSTORMS FROM WEST TO EAST DURING THE DAY. THE VORT MAX/H5
LOW WAS LOCATED IN THE CENTRAL DAKOTAS...RIGHT ON THE ND/SD
BORDER. THIS SYSTEM SHOWS UP WELL ON WATER VAPOR IMAGERY...AND
THERE IS ALREADY SOME THUNDERSTORM ACTIVITY IN THE VICINITY OF THE
VORT MAX. FURTHER SOUTH...THERE WERE SOME BROKEN SHOWERS ALONG THE
FRONTAL BOUNDARY IN THE EASTERN DAKOTAS.
THE MODELS ARE IN GENERALLY GOOD AGREEMENT...ALTHOUGH THINK THE
GFS IS A LITTLE FAST. LOOKING AT THE SURFACE WINDS ON THE GFS THE
MSL PRESSURE/LOW PLACEMENT DOESNT EVEN MATCH UP. A MORE LIKELY
LOCATION WOULD BE FURTHER NORTHWEST IN THE VICINITY OF INL...
AND CLOSER TO THE NAM/UKMET/CANADIAN/ECMWF POSITION. SO...WILL GO
WITH A COMPROMISE SOLUTION BETWEEN NAM/GFS/UKMET/CANADIAN/ECMWF
AND ENSEMBLE FORECASTS.
FOR TODAY...THE MAIN QUESTION IS HOW HIGH TO GO ON POPS. MOS
INDICATES LIKELY TO CONDITIONAL POPS FOR MUCH OF THE CWA
TODAY...BUT THINK SOME AREAS MAY SEE MORE SCATTERED/BROKEN SHOWER
AND THUNDERSTORM ACTIVITY WITH THE FIRST BATCH OF PRECIPITATION.
AFTER THAT BATCH MOVES THROUGH...THERE IS A NARROW WINDOW OF
OPPORTUNITY FOR POSSIBLE SEVERE THUNDERSTORMS TO DEVELOP. SPC
DAY ONE OUTLOOK INDICATES A CHANCE OF SEVERE FROM WALKER...TO NEAR
CLOQUET TO HAYWARD AND WINTER...AND THINK THIS LOOKS JUST RIGHT.
THINGS DESTABILIZE NICELY IN THE DRY SLOT RIGHT IN THE VICINITY OF
THE OCCLUDED FRONT AFTER THE FIRST BATCH OF PRECIPITATION MOVES
THROUGH. CAPE NOT ALL THAT TREMENDOUS...BUT DOES ENCOMPASS A
NARROW CAPE PROFILE THROUGH A GREAT DEAL OF HEIGHT. BULK SHEAR AND
LOW LEVEL SHEAR PROFILES BECOME MORE FAVORABLE DURING THE DAY...
AND DEWPOINTS AND LOW LEVEL MIXING RATIOS BRIEFLY SURGE AHEAD OF
THE FRONT IN THIS GENERAL AREA. H5 WINDS INCREASE TO ABOUT 60-70
KT AND DEEP LAYER LAPSE RATES APPROACH 7 DEG C/KM. WHAT THIS ALL
BOILS DOWN TO IS AN OPPORTUNITY FOR SEVERE STORMS...INCLUDING
SUPERCELLS. THE MAIN THREAT WILL BE TORNADOES NEAR THE SURFACE LOW
AND THE FRONTAL INTERSECTIONS...LARGE HAIL DUE TO LOW FREEZING
LEVELS AND GUSTY WINDS DUE TO THE STRONG SHEAR PROFILES.
FOR TONIGHT...THERE IS STILL A CHANCE OF THUNDERSTORMS INTO THE
EVENING...BUT THE THREAT OF THUNDER SHOULD MOVE EAST OF THE AREA
AS THE COLD POOL AND WRAP AROUND MOISTURE DROPS DOWN.
STILL SOME SHOWERS INTO TOMORROW...MAINLY ACROSS THE NORTHEASTERN
HALF OF THE CWA...BUT THE THREAT OF SHOWERS WILL GRADUALLY END
FROM SOUTHWEST TO NORTHEAST BY SUNDAY NIGHT.
STILL LOOKS WET FOR MIDWEEK...WITH THE NEXT SYSTEM MOVING IN
MONDAY NIGHT AND PERSISTING ACROSS THE AREA INTO POSSIBLY THURSDAY
NIGHT. SPC DAY 4 OUTLOOK GIVES US THE POTENTIAL FOR SEVERE WEATHER
SO WILL HAVE TO WATCH THIS CAREFULLY.
GUSTY NORTHEAST WINDS WILL BRING A SMALL CRAFT ADVISORY FOR MUCH
OF OUR NEAR SHORE AREAS TODAY.
AVIATION...VFR CONDITIONS WILL PREVAIL THIS MORNING...BUT
SHOWERS AND THUNDERSTORMS ARE EXPECTED TO OVERSPREAD THE FA LATE
THIS MORNING AND THIS AFTERNOON. MVFR CONDITIONS ARE EXPECTED THIS
AFTERNOON AND INTO THE EVENING WITH THE RAIN AND THUNDERSTORMS.
&&
POINT TEMPS/POPS...
DLH 54 39 64 38 / 70 40 20 10
INL 53 42 62 34 / 80 60 20 10
BRD 62 42 65 37 / 30 10 10 10
HYR 70 43 64 35 / 60 30 10 10
ASX 65 43 62 36 / 70 50 20 10
&&
.DLH WATCHES/WARNINGS/ADVISORIES...
MN...NONE.
WI...NONE.
LS...SMALL CRAFT ADVISORY UNTIL 5 PM CDT THIS AFTERNOON FOR LSZ143-
LSZ144-LSZ145-LSZ146-LSZ147.
SMALL CRAFT ADVISORY UNTIL 10 PM CDT THIS EVENING FOR LSZ140-
LSZ141-LSZ142.
GRANING/BERDESHAZARDOUS WEATHER OUTLOOK...UPDATED NATIONAL WEATHER SERVICE DULUTH MN 750 AM CDT SAT MAY 26 2007 LSZ121-140>148-162-MNZ010>012-018>021-025-026-033>038-WIZ001>004- 006>009-271030- BAYFIELD TO OAK POINT WI-GRAND PORTAGE TO GRAND MARAIS MN- GRAND MARAIS TO TACONITE HARBOR MN- TACONITE HARBOR TO SILVER BAY HARBOR MN- SILVER BAY HARBOR TO TWO HARBORS MN-TWO HARBORS TO DULUTH MN- DULUTH MN TO PORT WING WI-PORT WING TO SAND ISLAND WI- SAND ISLAND TO BAYFIELD WI-OAK POINT TO SAXON HARBOR WI- OPEN WATERS OF LAKE SUPERIOR WEST OF A LINE FROM SAXON HARBOR WI TO GRAND PORTAGE MN-KOOCHICHING-NORTHERN ST. LOUIS- NORTHERN COOK/NORTHERN LAKE-NORTHERN ITASCA-CENTRAL ST. LOUIS- SOUTHERN LAKE/LAKESHORE-SOUTHERN COOK/LAKESHORE-NORTHERN CASS- SOUTHERN ITASCA-SOUTHERN CASS-CROW WING-NORTHERN AITKIN- SOUTHERN AITKIN-CARLTON/SOUTHERN ST. LOUIS-PINE-DOUGLAS-BAYFIELD- ASHLAND-IRON-BURNETT-WASHBURN-SAWYER-PRICE- 750 AM CDT SAT MAY 26 2007 THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHEAST MINNESOTA... NORTHWEST WISCONSIN AND WESTERN LAKE SUPERIOR. .DAY ONE...TODAY AND TONIGHT THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS TODAY AND THIS EVENING...MAINLY SOUTH OF A LINE FROM PINE RIVER...TO THE TWIN PORTS...TO WINTER. TORNADOES...LARGE HAIL AND DAMAGING WINDS ARE POSSIBLE WITH THE THUNDERSTORMS THAT DEVELOP IN AND AROUND THIS AREA. FOR THE NEAR SHORE WATERS OF WESTERN LAKE SUPERIOR...FROM GRAND PORTAGE...TO DULUTH...TO BAYFIELD...A SMALL CRAFT ADVISORY HAS BEEN ISSUED INTO THIS EVENING FOR INCREASING EASTERLY WINDS. SEE THE LATEST NEARSHORE MARINE FORECAST FOR MORE INFORMATION. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY THERE IS A CHANCE OF THUNDERSTORMS MONDAY NIGHT THROUGH WEDNESDAY NIGHT. SOME OF THE STORMS MAY BE SEVERE TUESDAY AND TUESDAY NIGHT. .SPOTTER INFORMATION STATEMENT... SKYWARN SPOTTER ACTIVATION MAY BE NEEDED TODAY OR TONIGHT. DAP
The Duluth radar (KDLH), 157 km away, was scanning. The volume nearest the first event began at 19:10 UTC.
1 tornado. Local standard time, as filed.
A waterspout touched down on the northwest part of Lake Winnibigoshish on the afternoon of May 26th. The waterspout traveled northeast for 10 minutes and was associated with a thundershower in the area. No damage was reported.|
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Minnesota in 2007Every state in 2007This day in weather historyThe tornado archive for Minnesota, 2007Warnings in Minnesota, May 2007
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: 48542.