Severe Weather and Mammatus clouds on Mother's Day:
May 9, 2004
The severe weather on May 9th began with a single severe thunderstorm cell in west central Minnesota during the afternoon. More thunderstorms developed and formed a line as they moved east. By the evening hours the storms spread across the Twin Cities bringing gusty winds, small hail and welcome rains. The University of Minnesota St. Paul Campus Climate Observatory recorded a wind gust of 62mph. This is the highest peak gust recorded at the station since wind records began in 1990. What might be most remembered from this storm was the brilliant sunset shining on the mammmatus clouds hanging from the underside of the anvil of the thunderstorm. Mammatus clouds do not produce severe weather, but they often accompany severe thunderstorms. Many shutterbugs took photos of the clouds across the northern Twin Cities.
Mammatus clouds over U of M St Paul Campus. May 9, 2004
Listed below are some storm reports courtesy the National Weather Service.
PRELIMINARY LOCAL STORM REPORT ... SUMMARY
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
641 AM CDT MON MAY 10 2004
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION...ST.. ...SOURCE....
..REMARKS..
1142 AM HAIL 7 NE CLARKFIELD 44.86N 95.71W
05/09/2004 2.00 INCH YELLOW MEDICINE MN PUBLIC
1142 AM TSTM WND GST 7 NE CLARKFIELD 44.86N 95.71W
05/09/2004 75 MPH YELLOW MEDICINE MN PUBLIC
1142 AM TORNADO 7 NE CLARKFIELD 44.86N 95.71W
05/09/2004 YELLOW MEDICINE MN PUBLIC
PUBLIC REPORT OF TORNADO PENDING INVESTIGATION. A SMALL
SHED WAS DESTROYED. ESTIMATED ON THE GROUND FOR 1 MINUTE
WITH 30 YARD WIDE PATH.
0208 PM HAIL CHOKIO 45.57N 96.17W
05/09/2004 0.75 INCH STEVENS MN LAW ENFORCEMENT
0208 PM HAIL 1 E CHOKIO 45.57N 96.15W
05/09/2004 1.75 INCH STEVENS MN LAW ENFORCEMENT
0229 PM HAIL MORRIS 45.59N 95.91W
05/09/2004 0.88 INCH STEVENS MN LAW ENFORCEMENT
0230 PM HAIL 8 N HOLLOWAY 45.36N 95.91W
05/09/2004 1.00 INCH SWIFT MN LAW ENFORCEMENT
0250 PM HAIL 13 S CYRUS 45.43N 95.74W
05/09/2004 0.88 INCH POPE MN PUBLIC
0255 PM HAIL 12 S STARBUCK 45.44N 95.53W
05/09/2004 1.00 INCH POPE MN LAW ENFORCEMENT
ROAD SLIPPERY FROM HAIL. VERY HEAVY RAIN.
0258 PM FUNNEL CLOUD 8 N WILLMAR 45.24N 95.05W
05/09/2004 KANDIYOHI MN AMATEUR RADIO
0317 PM HAIL MURDOCK 45.22N 95.39W
05/09/2004 0.75 INCH SWIFT MN TRAINED SPOTTER
0320 PM HAIL MURDOCK 45.22N 95.39W
05/09/2004 1.75 INCH SWIFT MN TRAINED SPOTTER
0321 PM HAIL 20 E BENSON 45.32N 95.20W
05/09/2004 0.75 INCH KANDIYOHI MN NWS EMPLOYEE
0323 PM HAIL 2 W BROOTEN 45.50N 95.16W
05/09/2004 0.75 INCH POPE MN LAW ENFORCEMENT
0327 PM HAIL 6 S BROOTEN 45.41N 95.12W
05/09/2004 0.75 INCH STEARNS MN TRAINED SPOTTER
0330 PM HAIL 2 W SUNBURG 45.35N 95.28W
05/09/2004 1.00 INCH SWIFT MN UNKNOWN
0330 PM HAIL KERKHOVEN 45.19N 95.32W
05/09/2004 1.00 INCH SWIFT MN EMERGENCY MNGR
0335 PM HAIL 6 S BROOTEN 45.41N 95.12W
05/09/2004 0.88 INCH STEARNS MN AIRPLANE PILOT
0335 PM TSTM WND DMG PENNOCK 45.15N 95.18W
05/09/2004 KANDIYOHI MN BROADCAST MEDIA
ROOF RIPPED OFF A TURKEY BARN ALONG ROUTE 12.
0347 PM HAIL 4 SE PAYNESVILLE 45.34N 94.66W
05/09/2004 0.88 INCH STEARNS MN TRAINED SPOTTER
0355 PM TSTM WND GST WILLMAR 45.12N 95.05W
05/09/2004 60 MPH KANDIYOHI MN AWOS
0403 PM HAIL PAYNESVILLE 45.38N 94.72W
05/09/2004 1.00 INCH STEARNS MN EMERGENCY MNGR
0403 PM TSTM WND DMG 2 S PAYNESVILLE 45.35N 94.72W
05/09/2004 STEARNS MN TRAINED SPOTTER
PONTOON BOAT BLOWN OFF OF LIFT.
0408 PM HAIL 9 S PAYNESVILLE 45.25N 94.72W
05/09/2004 1.00 INCH MEEKER MN TRAINED SPOTTER
0410 PM TSTM WND DMG 5 SW WATKINS 45.26N 94.48W
05/09/2004 MEEKER MN TRAINED SPOTTER
FISH HOUSE BLOWN OVER AND ROLLED 50 FEET.
0413 PM HAIL EDEN VALLEY 45.33N 94.55W
05/09/2004 0.75 INCH STEARNS MN LAW ENFORCEMENT
0414 PM HAIL 5 NE ANNANDALE 45.31N 94.05W
REPORTED AT SUGAR LAKE
0415 PM TSTM WND DMG 3 SE PAYNESVILLE 45.35N 94.68W
05/09/2004 STEARNS MN AMATEUR RADIO
10 INCH DIAMETER TREE SNAPPED IN HALF
0415 PM HAIL 4 NE ANNANDALE 45.30N 94.06W
05/09/2004 1.50 INCH WRIGHT MN FIRE DEPT/RESCUE
0418 PM HAIL GROVE CITY 45.15N 94.68W
05/09/2004 0.75 INCH MEEKER MN LAW ENFORCEMENT
0420 PM HAIL 5 N LITCHFIELD 45.19N 94.53W
05/09/2004 0.75 INCH MEEKER MN TRAINED SPOTTER
0421 PM HAIL LITCHFIELD 45.12N 94.53W
05/09/2004 0.75 INCH MEEKER MN LAW ENFORCEMENT
0429 PM TORNADO 3 S WATKINS 45.27N 94.41W
05/09/2004 MEEKER MN PUBLIC
PUBLIC REPORT OF TORNADO CROSSING PASTURE ALONG ROUTE 17
SOUTH OF WATKINS. PRELIMINARY TORNADO PENDING
INVESTIGATION.
0430 PM HAIL WATKINS 45.31N 94.41W
05/09/2004 0.75 INCH MEEKER MN LAW ENFORCEMENT
0430 PM TSTM WND DMG WATKINS 45.31N 94.41W
05/09/2004 MEEKER MN LAW ENFORCEMENT
TREES WERE DOWNED.
0433 PM TSTM WND DMG 5 SW LITCHFIELD 45.07N 94.60W
05/09/2004 MEEKER MN LAW ENFORCEMENT
TWO TURKEY BARNS MINORLY DAMAGED ALONG ROUTE 23 NEAR LONG
LAKE.
0443 PM TSTM WND GST HUTCHINSON 44.89N 94.37W
05/09/2004 68 MPH MCLEOD MN TRAINED SPOTTER
LARGE TREE BRANCHES DOWNED.
0444 PM TORNADO WAVERLY 45.07N 93.97W
05/09/2004 WRIGHT MN LAW ENFORCEMENT
POSSIBLE TORNADO AT INTERSECTION OF ROUTES 8 AND 107
PENDING INVESTIGATION. REPORTED BY SHERIFF.
0444 PM TORNADO 1 SW MONTICELLO 45.29N 93.82W
05/09/2004 WRIGHT MN LAW ENFORCEMENT
TORNADO REPORTED BY SHERIFF. INVESTIGATION PENDING.
0450 PM TSTM WND GST ST MICHAEL 45.21N 93.66W
05/09/2004 60 MPH WRIGHT MN MESONET
0455 PM TSTM WND GST HUTCHINSON 44.89N 94.37W
05/09/2004 68 MPH MCLEOD MN AWOS
0458 PM HAIL COKATO 45.08N 94.19W
05/09/2004 0.75 INCH WRIGHT MN TRAINED SPOTTER
DURATION WAS 1643 TO 1658 CDT
0500 PM HAIL 1 N HOWARD LAKE 45.07N 94.07W
05/09/2004 0.75 INCH WRIGHT MN TRAINED SPOTTER
0505 PM TSTM WND DMG ELK RIVER 45.33N 93.57W
05/09/2004 SHERBURNE MN TRAINED SPOTTER
A FEW TREES WERE DOWNED.
0521 PM TORNADO GREENFIELD 45.10N 93.70W
05/09/2004 HENNEPIN MN LAW ENFORCEMENT
HOUSE DAMAGED AND GARAGE DESTROYED. PRELIMINARY TORNADO
PENDING INVESTIGATION.
0527 PM HAIL 5 S HUTCHINSON 44.82N 94.37W
05/09/2004 1.00 INCH MCLEOD MN TRAINED SPOTTER
0527 PM TSTM WND DMG 5 E NORWOOD/YOUNG AMERI 44.78N 93.92W
05/09/2004 CARVER MN FIRE DEPT/RESCUE
HEAVY DEBRIS REPORTED IN AIR NEAR COUNTY MAINTENANCE
BUILDING BETWEEN NORWOOD AND COLGNE ALONG ROUTE 212.
0530 PM TSTM WND DMG 3 S ISANTI 45.45N 93.25W
05/09/2004 ISANTI MN LAW ENFORCEMENT
POWER LINES DOWN
0535 PM TSTM WND GST NEW HOPE 45.04N 93.39W
05/09/2004 60 MPH HENNEPIN MN MESONET
0535 PM TSTM WND DMG 3 S CHANHASSEN 44.86N 93.56W
05/09/2004 CARVER MN PUBLIC
TREES WERE DOWNED AT THE INTERSECTION OF ROUTES 212 AND
101. THE TIME WAS ESTIMATED.
0535 PM HAIL GLENCOE 44.77N 94.15W
05/09/2004 0.75 INCH MCLEOD MN TRAINED SPOTTER
0539 PM TSTM WND DMG PLYMOUTH 45.02N 93.46W
05/09/2004 HENNEPIN MN LAW ENFORCEMENT
TREES WERE DOWNED AT INTERSECTION OF BASS LAKE ROAD AND
ROUTE 169 IN PLYMOUTH. TREES WERE ALSO DOWNED BETWEEN 539
PM AND 555 PM IN ORONO... INDEPENDENCE... CRYSTAL... ST.
ANTHONY AND ROGERS.
0540 PM HAIL 1 NE MINNEAPOLIS 44.97N 93.25W
05/09/2004 0.75 INCH HENNEPIN MN AMATEUR RADIO
REPORTED IN ST. ANTHONY
0540 PM TSTM WND GST MINNEAPOLIS 44.96N 93.27W
05/09/2004 66 MPH HENNEPIN MN MESONET
0540 PM HAIL BROOKLYN CENTER 45.07N 93.32W
05/09/2004 0.75 INCH HENNEPIN MN TRAINED SPOTTER
0540 PM HAIL 3 W GLENCOE 44.77N 94.21W
05/09/2004 0.75 INCH MCLEOD MN TRAINED SPOTTER
REPORTED IN SUMTER. TIME WAS ESTIMATED.
0542 PM HAIL MINNEAPOLIS 44.96N 93.27W
05/09/2004 0.75 INCH HENNEPIN MN NWS EMPLOYEE
REPORTED AT LAKE NOKOMIS
0545 PM TSTM WND DMG ST PAUL 44.95N 93.10W
05/09/2004 RAMSEY MN TRAINED SPOTTER
TREES AND POWERLINES DOWN
0545 PM HAIL ST PAUL 44.95N 93.10W
05/09/2004 0.88 INCH RAMSEY MN TRAINED SPOTTER
0545 PM HAIL 5 NNE DASSEL 45.15N 94.27W
05/09/2004 0.75 INCH MEEKER MN LAW ENFORCEMENT
BRANCHES DOWN ALSO
0550 PM HAIL BLAINE 45.17N 93.21W
05/09/2004 0.88 INCH ANOKA MN TRAINED SPOTTER
0550 PM TSTM WND DMG ST PAUL 44.95N 93.10W
05/09/2004 RAMSEY MN TRAINED SPOTTER
SEVERAL TREES WERE DOWNED IN THE COMO PARK AREA
0550 PM TSTM WND GST FOREST LAKE 45.28N 92.99W
05/09/2004 60 MPH WASHINGTON MN MESONET
TIME WAS ESTIMATED.
0550 PM HAIL NEW BRIGHTON 45.07N 93.20W
05/09/2004 0.75 INCH RAMSEY MN AMATEUR RADIO
0554 PM TSTM WND GST ST PAUL 44.95N 93.10W
05/09/2004 72 MPH RAMSEY MN AWOS
MEASURED AT HOLMAN FIELD.
0555 PM TSTM WND DMG FALCON HEIGHTS 44.99N 93.18W
05/09/2004 RAMSEY MN AMATEUR RADIO
MULTIPLE BRANCHES DOWN
0559 PM HAIL WOODBURY 44.91N 92.92W
05/09/2004 0.75 INCH WASHINGTON MN TRAINED SPOTTER
0602 PM HAIL 1 NE MAPLEWOOD 45.00N 93.01W
05/09/2004 0.75 INCH RAMSEY MN AMATEUR RADIO
REPORTED IN NORTH ST. PAUL AT INTERSECTION OF ROUTE 36
AND 120.
0603 PM TSTM WND DMG 2 N SHAFER 45.42N 92.75W
05/09/2004 CHISAGO MN TRAINED SPOTTER
6 INCH DIAMETER TREES DOWN
0607 PM HAIL 4 NE NEW AUBURN 44.71N 94.17W
05/09/2004 0.75 INCH SIBLEY MN TRAINED SPOTTER
0608 PM HAIL 3 N GREEN ISLE 44.72N 94.01W
05/09/2004 0.75 INCH SIBLEY MN LAW ENFORCEMENT
0615 PM HAIL DRESSER 45.36N 92.63W
05/09/2004 0.75 INCH POLK WI FIRE DEPT/RESCUE
0615 PM TSTM WND DMG SHAKOPEE 44.77N 93.48W
05/09/2004 SCOTT MN TRAINED SPOTTER
LARGE BRANCHES WERE DOWNED.
0615 PM TSTM WND DMG 5 SE HUDSON 44.92N 92.67W
05/09/2004 ST. CROIX WI LAW ENFORCEMENT
A FEW TREES WERE DOWNED.
0615 PM HAIL NORTH ST PAUL 45.01N 93.00W
05/09/2004 1.00 INCH RAMSEY MN TRAINED SPOTTER
0616 PM TSTM WND GST NEW RICHMOND 45.12N 92.54W
05/09/2004 58 MPH ST. CROIX WI AWOS
0619 PM HAIL 2 SW PRIOR LAKE 44.71N 93.46W
05/09/2004 1.00 INCH SCOTT MN TRAINED SPOTTER
0620 PM HAIL COTTAGE GROVE 44.82N 92.93W
05/09/2004 0.75 INCH WASHINGTON MN TRAINED SPOTTER
0630 PM TSTM WND DMG FALCON HEIGHTS 44.99N 93.18W
05/09/2004 RAMSEY MN LAW ENFORCEMENT
PROCH WAS BLOWN OFF OF A HOUSE AT THE INTERSECTION OF
LEXINGTON AND HORTON IN THE COMO AREA.
0650 PM HAIL APPLE VALLEY 44.75N 93.20W
05/09/2004 0.75 INCH DAKOTA MN AMATEUR RADIO
0700 PM HAIL LAKEVILLE 44.68N 93.24W
05/09/2004 0.75 INCH DAKOTA MN TRAINED SPOTTER
0700 PM TSTM WND DMG MENOMONIE 44.89N 91.91W
05/09/2004 DUNN WI LAW ENFORCEMENT
TREES WERE DOWNED IN MENOMONIE AND OTTER CREEK TOWNSHIP.
THE TIME WAS ESTIMATED.
0700 PM HAIL 5 E ELLSWORTH 44.74N 92.38W
05/09/2004 1.00 INCH PIERCE WI TRAINED SPOTTER
0700 PM HAIL 4 SE DALLAS 45.22N 91.76W
05/09/2004 0.75 INCH BARRON WI TRAINED SPOTTER
0700 PM HAIL 10 S ELLSWORTH 44.59N 92.48W
05/09/2004 1.00 INCH PIERCE WI TRAINED SPOTTER
0707 PM TORNADO 4 SE DALLAS 45.22N 91.76W
05/09/2004 BARRON WI PUBLIC
POSSIBLE TORNADO PENDING INVESTIGATION IN SIOUX CREEK
TOWNSHIP.
0715 PM HAIL 5 SW ELLSWORTH 44.69N 92.55W
05/09/2004 1.00 INCH PIERCE WI TRAINED SPOTTER
0718 PM TORNADO 2 SW NEW AUBURN 45.18N 91.59W
05/09/2004 CHIPPEWA WI LAW ENFORCEMENT
POSSIBLE TORNADO PENDING INVESTIGATION 2 SW NEW AUBURN
ALONG 235TH AVE. ALSO TREES DOWN JUST EAST OF NEW AUBURN.
0733 PM TSTM WND GST BELLE PLAINE 44.62N 93.76W
05/09/2004 63 MPH SCOTT MN TRAINED SPOTTER
0740 PM HAIL 2 S BELLE PLAINE 44.59N 93.76W
05/09/2004 0.25 INCH SCOTT MN PUBLIC
0753 PM HAIL 10 NW MANKATO 44.27N 94.13W
05/09/2004 0.88 INCH NICOLLET MN LAW ENFORCEMENT
0755 PM HAIL DURAND 44.63N 91.96W
05/09/2004 0.75 INCH PEPIN WI TRAINED SPOTTER
0758 PM TSTM WND DMG 10 S BRUCE 45.31N 91.27W
05/09/2004 RUSK WI LAW ENFORCEMENT
LARGE TREE DOWN BLOCKING ROAD
0800 PM HAIL BELLE PLAINE 44.62N 93.76W
05/09/2004 1.00 INCH SCOTT MN TRAINED SPOTTER
0805 PM HAIL DURAND 44.63N 91.96W
05/09/2004 0.88 INCH PEPIN WI LAW ENFORCEMENT
0807 PM HAIL PEPIN 44.44N 92.15W
05/09/2004 0.75 INCH PEPIN WI PUBLIC
0812 PM HAIL AUGUSTA 44.68N 91.12W
05/09/2004 0.75 INCH EAU CLAIRE WI LAW ENFORCEMENT
0819 PM HAIL 5 E SLEEPY EYE 44.30N 94.62W
05/09/2004 0.88 INCH BROWN MN TRAINED SPOTTER
0833 PM HAIL 5 N KILKENNY 44.39N 93.57W
05/09/2004 1.00 INCH LE SUEUR MN TRAINED SPOTTER
0835 PM HAIL MONTGOMERY 44.44N 93.58W
05/09/2004 0.75 INCH LE SUEUR MN TRAINED SPOTTER
0841 PM HAIL 5 S MONTGOMERY 44.37N 93.58W
05/09/2004 0.75 INCH LE SUEUR MN TRAINED SPOTTER
0900 PM HAIL DUNDAS 44.43N 93.20W
05/09/2004 0.75 INCH RICE MN TRAINED SPOTTER
0903 PM HAIL MANKATO 44.17N 93.99W
05/09/2004 1.00 INCH BLUE EARTH MN LAW ENFORCEMENT
0903 PM HAIL 10 N MANKATO 44.17N 93.99W
05/09/2004 0.88 INCH BLUE EARTH MN LAW ENFORCEMENT
0905 PM HAIL 7 NW FARIBAULT 44.30N 93.27W
05/09/2004 0.75 INCH RICE MN LAW ENFORCEMENT
0920 PM HAIL 5 E MANKATO 44.17N 93.89W
05/09/2004 1.00 INCH BLUE EARTH MN TRAINED SPOTTER
0923 PM HAIL 4 E FARIBAULT 44.30N 93.19W
05/09/2004 0.75 INCH RICE MN PUBLIC
0924 PM HAIL 2 E EAGLE LAKE 44.16N 93.84W
05/09/2004 0.75 INCH BLUE EARTH MN LAW ENFORCEMENT
0935 PM HAIL MORRISTOWN 44.22N 93.44W
05/09/2004 1.00 INCH RICE MN LAW ENFORCEMENT
0945 PM HAIL 4 N ZUMBROTA 44.35N 92.67W
05/09/2004 0.75 INCH GOODHUE MN LAW ENFORCEMENT
1111 PM HAIL ALBERT LEA 43.66N 93.37W
05/09/2004 0.75 INCH FREEBORN MN LAW ENFORCEMENT
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URL: http://climate.umn.edu/doc/journal/snowburst040308.htm
Last modified: March 5, 2004
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