As a cold front moved east across Upper Michigan, thunderstorms produced strong winds and large hail overnight on June 18th and early June 19th.
Every event with a place to put it. Tap one for its entry below.
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.
The episode as NWS MQT wrote it up.
As a cold front moved east across Upper Michigan, thunderstorms produced strong winds and large hail overnight on June 18th and early June 19th.
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 Marquette, MI wrote its last area forecast discussion before the first event at Jun 18, 9:10 PM EST, 1 hour 20 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE MARQUETTE MI 1010 PM EDT MON JUN 18 2001 SHRA/TSRA TONIGHT AND SEVERE POTENTIAL ARE PRIMARY CONCERNS WV IMAGERY AND RUC40 SHOWING SHRTWV STRETCHING FM NE SD TO LAKE WINNEPEG. THIS WAS BEING PUSHED ALONG WITH A STRONG 105KT ULJ OVR NRN CONUS. SFC ANLYS SHOWING LOW OVR MN SPLITTING. NRN PART OVR INL...WHILE THE SRN PART WAS OVR JUST E OF MSP. RUC PROJECTING THE SRN LOW TO SHIFT INTO WRN UP BY 06Z. SHRTWV WILL REACH WRN UP BY 12Z. A WAVE IS SHOWING UP IN THE 310K ISENTROPIC ANLYS OVR WRN UP. THIS SHOULD ENHANCE POTENTIAL FOR TRIGGERING TSRA LATE THIS EVENING. SFC-H85 Q-VEC ANLYS ALSO SHOWING GREATEST CONVERGENCE OVR SLIDING OVR FA OVRNGT. LI'S ARE XPCT TO DROP OFF TO -5 BY 09Z. SBCAPE VALUES ARE XPCT TO XCEED 2500J/KG BY 09Z OVR FA PER RUC. LATEST RUC SOUNDING DATA FOR UP SHOWING A LTL MORE MSTR THAN EARLIER FCST IN LLVLS. ALREADY SVR TSRA DVLPG OVR ERN MNf AND NRN WI. POTENTIAL IS HI FOR POSSIBLE SVR TSRA AND/OR TOR XPCTD OVRNGT. LOOKING AT THE RUC'S THETA-E RIDGE PATTERN...IT APPEARS THE STRONGEST ACTIVITIES WILL BE OVR THE SRN UP. .MQT...TORNADO WATHCH MIZ002>004-009-010. DLG
MIZ001>007-009>014-190600- SEVERE WEATHER OUTLOOK...UPDATED TO MOVE BACK TIMES NATIONAL WEATHER SERVICE MARQUETTE MI 655 PM EDT MON JUN 18 2001 ...SEVERE WEATHER POTENTIAL STATEMENT FOR WEST AND CENTRAL UPPER MICHIGAN... THERE IS A SLIGHT RISK OF SEVERE WEATHER ACROSS PORTIONS OF WEST AND CENTRAL UPPER MICHIGAN TONIGHT. LOW PRESSURE IN EASTERN SOUTH DAKOTA WILL MOVE TO WESTERN LAKE SUPERIOR TONIGHT. A COLD FRONT WILL MOVE THROUGH THE UPPER PENINSULA AFTER MIDNIGHT. AS WARM AND UNSTABLE AIR CONTINUES TO FLOW INTO UPPER MICHIGAN...EXPECT SHOWERS AND THUNDERSTORMS TO REDEVELOP AFTER SUNSET. LOOK FOR THE STORMS TO MOVE EAST AT 50 MPH. THE MAIN THREAT FROM THESE STORMS WILL BE HAIL TO ONE INCH IN DIAMETER. WIND GUSTS TO 60 MPH ARE ALSO POSSIBLE...MAINLY SOUTH OF IRON MOUNTAIN AND ESCANABA. LOOK FOR SHOWERS AND THUNDERSTORMS TO REDEVELOP IN IRONWOOD AFTER 9 PM CDT...HOUGHTON AND IRON MOUNTAIN AFTER 10 PM CDT/11 PM EDT... MARQUETTE AND MENOMINEE AFTER 11 PM CDT/MIDNIGHT EDT...AND MUNISING AND ESCANABA AFTER MIDNIGHT EDT. SKYWARN ACTIVATION MAY BE NEEDED AFTER SUNSET. STAY TUNED TO NOAA WEATHER RADIO OR YOUR FAVORITE MEDIA PROVIDTER FOR LATER FORECASTS AND POSSIBLE WATCHES OR WARNINGS. MICHELS
MIZ002>004-009-010-190700- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MARQUETTE MI 1029 PM EDT MON JUN 18 2001 ...TORNADO WATCH NUMBER 451 IN EFFECT UNTIL 300 AM EDT (200 AM CDT)... A TORNADO WATCH IS IN EFFECT FOR GOGEBIC...ONTONAGON... HOUGHTON...BARAGA AND IRON COUNTIES UNTIL 300 AM EDT (200 AM CDT). THIS WOULD INCLUDE THE CITIES OF IRONWOOD...ONTONAGON...IRON RIVER... CRYSTAL FALLS...LANSE...HOUGHTON AND HANCOCK. THUNDERSTORMS THAT ARE SEVERE HAVE BEEN ONGOING ACROSS NORTHWEST AND CENTRAL WISCONSIN AND ARE MOVING NORTHEAST AT 45 MPH. THE THUNDERSTORMS ARE EXPECTED TO MOVE INTO THE UPPER PENINSULA OF MICHIGAN AFTER 1000 PM CDT (1100 PM EDT) WITH LARGE HAIL...ISOLATED TORNADOES AND STRONG WIND OF 70 MPH OR GREATER POSSIBLE. SOME OF THE THUNDERSTORMS IN NORTHWESTERN WISCONSIN HAVE PRODUCED TORNADOES THIS EVENING. PERSONS IN GOGEBIC...ONTONAGON...HOUGHTON...BARAGA AND IRON COUNTIES ARE URGED TO LISTEN FOR LATER WEATHER STATEMENTS...FORECAST UPDATES AND POSSIBLE WARNINGS USING NOAA WEATHER RADIO OR THEIR FAVORITE MEDIA OUTLET. MICHELS
The Marquette radar (KMQT), 165 km away, was scanning. The volume nearest the first event began at 03:29 UTC.
4 hail, 1 thunderstorm wind. Local standard time, as filed.
Two foot diameter tree down across road. Other smaller trees also down.
One inch hail.
Golf-ball sized hail.
Dime sized hail.
Dime sized hail
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Michigan in 2001Every state in 2001This day in weather historyWarnings in Michigan, June 2001
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: 5254626, 5254627, 5254628, 5254629, 5254630.