Alert archive / Michigan / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 11, NWS Marquette, MI

April 18, 2002Ontonagon County, Michigan

NWS Marquette, MI issued this severe thunderstorm warning at Apr 18, 2002, 7:58 PM EDT for Ontonagon County, Michigan. It was in force for 17 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Apr 18, 2002, 7:58 PM EDT (23:58 UTC)
Expired: Apr 18, 2002, 8:15 PM EDT
In force: 17 min
Issued by: NWS Marquette, MI
Area: Whole counties

County Ontonagon County, MI

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 12:00Z, 12.0 hours before the alert went out and 272 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: 1774 m above ground
0-6 km bulk shear: 52 kt
0-1 km storm-relative helicity: 460 m²/s²
0-3 km storm-relative helicity: 766 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 4.1

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WUUS53 KMQT 182355
SVRMQT
MIC131-190015-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MARQUETTE MI
753 PM EDT THU APR 18 2002

THE NATIONAL WEATHER SERVICE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  ONTONAGON COUNTY IN WESTERN UPPER MICHIGAN

* UNTIL 815 PM EDT

* AT 748 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM NEAR MASS CITY...OR ABOUT 16 MILES SOUTHEAST OF
  ONTONAGON. THE STORM WAS MOVING NORTHEAST AT 50 MILES AN HOUR.

* THE SEVERE THUNDERSTORM WILL BE OVER...
  RURAL NORTHEASTERN ONTONAGON COUNTY THROUGH 815 PM EDT

AT 745 PM EDT...SKYWARN SPOTTERS AT MASS CITY REPORTED GOLF BALL 
SIZED HAIL WITH THIS STORM. SEEK SHELTER IMMEDIATELY

DAMAGING WINDS OVER 60 MPH...LARGE HAIL...AND DEADLY CLOUD TO GROUND
LIGHTNING CAN RESULT FROM SEVERE THUNDERSTORMS. REMAIN INDOORS AWAY
FROM WINDOWS UNTIL THE STORM HAS PASSED.

NNNN

TRH

WWW.CRH.NOAA.GOV/MQT/

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, 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 this severe thunderstorm warning went out at Apr 18, 4:55 PM EDT, 3 hours 3 minutes earlier.

Area forecast discussion, Apr 18, 4:55 PM EDT, 3 hours 3 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE MARQUETTE MI
455 PM EDT THU APR 18 2002

RAIN AND SVR CHANCES THIS EVENING...THEN EXTENT OF COOLING AND POSSIBLE LK
EFFECT PRECIP FRI NGT/SAT ARE FOCUSES.

WARM FRONT SURGING AS FAR NORTH AS IRON COUNTY WITH STABLE NE FLW
OFF LK SUPERIOR JUST TO EAST OVR FAR WRN GOGEBIC INTO NW WI. SFC
DWPTS JUST SOUTH OF WARM FRONT SURGING ABOVE 60F. MAIN COLD FRONT
STILL OFF TO WEST ENTERING ERN MN...WITH ARX/GRB/DLH/MQT RADARS
SHOWING CLUSTERS OF THUNDERSTORMS FORMING IN WARM SECTOR...BREAKING
STRONG MID LEVEL CAP. MAIN SHRTWV ENERGY SLIDING WELL TO NORTHWEST
OVR DAKOTAS...WITH SWATH OF LGT SNOW.

UNTIL COLD FRONT PASSES...THREAT FOR TS AND HVY SHRA PERSISTS
ESPECIALLY OVR SCNTRL ZONES AS H85 JET INTERACTS WITH HIGHER LAPSE
RATES ALONG AND NORTH OF WARM FRONT. MAIN THREAT THIS EVENING IS
SUPERCELLS WITH POSSIBILITY OF LARGE HAIL AND ISOLATED TORNADOES. K
INDEX ABOVE 35 AND H85 DWPTS ABOVE 10C SUPPORTS HEAVIER RAINS WITH
HEAVIEST TS...SO WL MENTION HVY RAIN. HAVE CONTINUED FLOOD WARNINGS
FOR GOGEBIC/ONTONAGON...WITH MAJORITY OF RAINFALL ALREADY OCCURRING
AND ANY RAINFALL TONIGHT EXPECTED TO BE LIGHT. ALTHOUGH WITH LATEST
DEVELOPMENT OF TS THERE COULD BE SOME LOCALLY HEAVY RAIN OVR FAR ERN
GOGEBIC COUNTY THIS EVENING. HAVE CONTINUED FLOOD WATCH FOR SRN
COUNTIES...AS DEFINED BLO...BUT HAVE DECLINED TO KEEP IT GOING OVR
ALGER/LUCE COUNTIES AS HEAVIEST RAINS FM TONIGHTS SHRA/TS SHOULD
REMAIN GENERALLY TO SOUTH.

AFT FRONT PUSHES THROUGH TONIGHT...COOLER AND DRIER CONDS LOOK TO
DOMINATE THROUGH NEXT FEW DAYS. ETA/AVN SHOWING SHRTWV SLIDING
THROUGH SAT...BUT LACKING DEEPER MOISTURE AND Q-VECTOR CONVERGENCE
SO WL LEAVE FCST DRY ATTM. HAVE SET SAT FOR COOLEST DAY...BUT STILL
WITH SOME MIXING TEMPS INTO 40S LOOK REASONABLE...ABOVE GUIDANCE.
ALTHOUGH THERMAL TROUGH MAKES IT FEASIBLE FOR LES FRI NIGHT INTO SAT
(DLT T/S AS HIGH AS 13C)...THINK LACK OF H100-H85 MOISTURE WL
PROHIBIT SIG LK EFFECT ACTIVITY.

EXTENDED...COOLER INITIALLY AS MID LEVEL TROUGH SLIDES ACROSS NCNTRL
CONUS BUT TEMPS LOOK TO REBOUND TO NORMAL-SLIGHTLY ABOVE NORMAL
EARLY NEXT WEEK. RAIN CHANCES DELAYED TIL TUE-WED WITH COOLER TEMPS
AGAIN THU WITH POSSIBLE RAIN OR SNOW.

.MQT...FLOOD WRNG TONIGHT MIZ002-009.
       FLOOD WATCH TONIGHT MIZ011>014.
       SMALL STREAM FLOOD ADVY MIZ003>005-010.
       GALE WRNG E HALF LK SUPERIOR.

JLA

In the hours before

Special weather statement, Apr 18, 5:57 PM EDT, 2 hours 1 minute before

MIZ004-005-010>013-190300-

SPECIAL WEATHER STATEMENT...CORRECTION FOR EFFECTIVE TIME
NATIONAL WEATHER SERVICE MARQUETTE MI
557 PM EDT THU APR 18 2002

THE STORM PREDICTION CENTER HAS ISSUED A TORNADO WATCH FOR PORTIONS
OF UPPER MICHIGAN EFFECTIVE UNTIL 1100 PM EDT (1000 PM CDT).

THIS WATCH INCLUDES THE FOLLOWING COUNTIES...
MARQUETTE...BARAGA...DELTA...MENOMINEE...DICKINSON...IRON...

THIS INCLUDES THE FOLLOWING LOCATIONS...
  AMASA...CHANNING...COVINGTON...CRYSTAL FALLS...ESCANABA...FELCH...
  FOSTER CITY...GLADSTONE...GWINN...HERMANSVILLE...IRON MOUNTAIN...
  IRON RIVER...KINGSFORD...LA BRANCHE...NORWAY...POWERS...RAPID
  RIVER...ROCK...STAMBAUGH...WATSON AND WITCH LAKE

REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR
TORNADOES AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA.
PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING
WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS AND POSSIBLE
WARNINGS.

THIS WATCH INCLUDES THE ADJOINING COASTAL WATERS OF AFFECTED
LAKESHORE COUNTIES.

JLA

WWW.CRH.NOAA.GOV/MQT/

Local storm report, Apr 18, 6:42 PM EDT, 1 hour 16 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MARQUETTE MI
642 PM EDT THU APR 18 2002

TIME(EDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0555 PM    THOUSAND ISLAND LAKE      MI   WIND DAMAGE
04/18/02   GOGEBIC                        TREES DOWN

0620 PM    BRUCE CROSSING            MI   .75 INCH HAIL
04/18/02   ONTONAGON

TRH

Local storm report, Apr 18, 7:08 PM EDT, 50 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MARQUETTE MI
708 PM EDT THU APR 18 2002

TIME(EDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0630 PM    3 W  KENTON               MI   .88 INCH HAIL
04/18/02   HOUGHTON

0705 PM    MARENISCO                 MI   .75 INCH HAIL
04/18/02   GOGEBIC

0700 PM    PELKIE                    MI   1.00 INCH HAIL
04/18/02   HOUGHTON

JLA

Local storm report, Apr 18, 7:18 PM EDT, 40 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MARQUETTE MI
718 PM EDT THU APR 18 2002

TIME(EDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0715 PM    4 S MASS CITY             MI   1.75 INCH HAIL
04/18/02   ONTONAGON

JLA

Local storm report, Apr 18, 7:41 PM EDT, 17 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MARQUETTE MI
741 PM EDT THU APR 18 2002

TIME(EDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0635 PM    6 SW MARENISCO            MI   .88 INCH HAIL
04/18/02   GOGEBIC

0640 PM    MARENISCO                 MI   .75 INCH HAIL
04/18/02   GOGEBIC

JLA

Local storm report, Apr 18, 7:44 PM EDT, 14 minutes before

PRELIMINARY LOCAL STORM REPORT...CORRECTED FIRST EVENT LOCATION
NATIONAL WEATHER SERVICE MARQUETTE MI
744 PM EDT THU APR 18 2002

TIME(EDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0635 PM    6 NE MARENISCO            MI   .88 INCH HAIL
04/18/02   GOGEBIC

0640 PM    MARENISCO                 MI   .75 INCH HAIL
04/18/02   GOGEBIC

JLA

The office that day

Everything else NWS Marquette, MI issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 18, 3:56 PM EDT	Severe Thunderstorm Warning	MQT	Menominee	64 min
Apr 18, 4:03 PM EDT	Special Marine Warning	MQT		57 min
Apr 18, 4:28 PM EDT	Special Marine Warning	MQT		62 min
Apr 18, 4:28 PM EDT	Special Marine Warning	MQT		62 min
Apr 18, 4:28 PM EDT	Special Marine Warning	MQT		62 min
Apr 18, 5:39 PM EDT	Severe Thunderstorm Warning	MQT	Gogebic	36 min
Apr 18, 6:01 PM EDT	Severe Thunderstorm Warning	MQT	Ontonagon	39 min
Apr 18, 6:10 PM EDT	Severe Thunderstorm Warning	MQT	Gogebic	35 min
Apr 18, 6:19 PM EDT	Severe Thunderstorm Warning	MQT	Houghton	26 min
Apr 18, 6:42 PM EDT	Severe Thunderstorm Warning	MQT	Gogebic, Ontonagon	63 min
Apr 18, 6:45 PM EDT	Severe Thunderstorm Warning	MQT	Baraga, Houghton	45 min
Apr 18, 6:56 PM EDT	Flash Flood Warning	MQT	Gogebic, Ontonagon	4 hr
Apr 18, 7:06 PM EDT	Special Marine Warning	MQT		54 min
Apr 18, 7:06 PM EDT	Special Marine Warning	MQT		54 min
Apr 18, 7:24 PM EDT	Severe Thunderstorm Warning	MQT	Houghton	51 min
Apr 18, 7:29 PM EDT	Severe Thunderstorm Warning	MQT	Baraga	31 min
Apr 18, 7:45 PM EDT	Special Marine Warning	MQT		2 hr
Apr 18, 7:45 PM EDT	Special Marine Warning	MQT		2 hr
Apr 18, 7:55 PM EDT	Severe Thunderstorm Warning	MQT	Ontonagon	20 min

Nearby

Severe Thunderstorm Warnings in Michigan, 2002 Every severe thunderstorm warning in 2002

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.