Flash Flooding in Michigan, June 21, 2006

Name: Flash Flooding in Michigan, June 21, 2006
Start: 2006-06-21T20:00
End: 2006-06-21T23:00
Location: Michigan

June 21, 2006 · NWS DTX · 2 events in 2 counties and zones

Where it happened

Every event with a place to put it; 2 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: $200,000
Crop damage: None recorded
Events: 2

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 DTX wrote it up.

On the evening of Wednesday June 21st, severe thunderstorms trained across the southern half of Lenawee County and the southern third of Monroe County. Up to 5 inches of rain fell that evening on top of about an inch that fell in the morning. This caused flash flooding across the two counties. Several roads were reported being washed out, especially around the Blissfield area where portions of US-223 and M-34 were closed with several feet of water reported flowing across portions of these roadways. Yards across nearly this entire area were under water with several reports of water entering the first floor of homes. At least two vehicle rescues took place across Lenawee County. An SUV fell approximately 12 feet as the road beneath them opened up when a culvert washed out, creating a large sink hole. No injuries or deaths were reported. Total property damage was very roughly estimated at $150K.

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 Detroit, MI wrote its last area forecast discussion before the first event at Jun 21, 6:45 PM EST, 1 hour 15 minutes earlier.

Area forecast discussion, Jun 21, 6:45 PM EST, 1 hour 15 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
745 PM EDT WED JUN 21 2006

.AVIATION...

THUNDERSTORM HAZARDS WILL BE THE FIRST CONCERN FOR AVIATION
INTERESTS THIS EVENING. THIS WILL GIVE WAY TO MVFR FOG DIMINISHING
TO IFR AROUND SUNRISE WITH SOME PATCHY MVFR STRATUS. SOME VFR HAZE
WILL LINGER THROUGH MORNING HOURS OF THURSDAY AS WARM AND HUMID
CONDITIONS SETTLE IN FOR THE AFTERNOON HOURS.

NEW DEVELOPMENT FROM THE LARGE CONVECTIVE COMPLEX NEAR THE OHIO
BORDER WILL TEND TO STAY SOUTH OF THE DETROIT TERMINAL SITES,
HOWEVER, NEW DEVELOPMENT TO THE EAST OF GRAND RAPIDS WILL HAVE A
CHANCE TO IMPACT FLINT THIS EVENING. THESE STORMS WERE DEVELOPING
NEAR THE INTERSECTION OF THE LAKE BREEZE AND WARM FRONT
INTERSECTION AND WHERE INSTABILITY WAS MAXIMIZED TO THE NORTH OF
THE FIRST COMPLEX. THERE IS STILL A SHARP DECREASE IN THE
INSTABILITY TO THE EAST TOWARD FLINT BASED ON SURFACE ANALYSIS
WHICH INDICATES AT LEAST A DECREASING STRENGTH TREND AS STORMS
MOVE EAST, IF NOT IN AREAL COVERAGE.

AFTER MIDNIGHT, STORMS AND PRECIPITATION WILL BE DECREASING AND
MOVING EAST. THIS WILL LEAVE BEHIND A MOIST BOUNDARY LAYER IN THE
WARM SECTOR OF THE SURFACE PATTERN IN SE MICHIGAN. THE RESULTING
FOG AND STRATUS WILL IMPROVE DURING THE DAYLIGHT HOURS OF THE
MORNING AND LEAD TO VFR CONDITIONS DURING THE AFTERNOON AND INTO
THURSDAY EVENING.

&&

.PREV DISCUSSION...ISSUED 420 PM EDT WED JUN 21 2006

SHORT TERM...TONIGHT AND THURSDAY

THE FIRST DAY OF SUMMER STARTED WITH THUNDER AND WILL LIKELY END
WITH THUNDER. THE MORNING ACTIVITY AND ASSOCIATED COLD POOL HAS
SUCCESSFULLY MANAGED TO SUPPRESS WARM FRONT TO THE WEST AND
SOUTHWEST...SO FAR. THE LATEST OBS ARE SHOWING SIGNS OF ATMOSPHERIC
RECOVERY AS TEMPS EDGE UPWARDS...AND WINDS AT THE SURFACE BEGIN TO
SLOWLY VEER FROM THE SOUTHEAST...THIS NOW BEING ACCOMPLISHED AS
LEFTOVER LOW LEVEL CLOUDS BEGIN TO THIN AND WARMER/MOISTER AIR JUST
TO OUR WEST AND SOUTHWEST CONTINUE IN OUR DIRECTION UNDER A STRONG
DEEP LAYER SOUTHWESTERLY FLOW. EXPECTATIONS CONTINUE FOR TEMPS AND
DEWPOINTS TO RISE CONSIDERABLY BETWEEN 430 PM AND 530 PM. THIS WILL
SUFFICIENTLY DESTABILIZE OUR ATMOSPHERE. A MODIFICATION OF THE 18Z
DTX SOUNDING TO 80/70...WHICH WE SHOULD EASILY ACHIEVE AS THE WARM
AIR FILTERS IN...YIELDS AROUND 3000 J/KG OF CAPE. THE MOISTURE IS
ALREADY IN PLACE AND WILL CONTINUE TO INCREASE AS THETA E ADVECTION
CONTINUES WITHIN THE STRONG SOUTHWESTERLY FLOW. THE 18Z SOUNDING
INDICATES A CAP LOCATED JUST ABOVE 750MB...BUT WILL LIKELY NOT BE
STRONG ENOUGH TO HOLD BACK SURFACE BASED CONVECTION WITHIN THE WARM
SECTOR EARLY THIS EVENING. THE LIFT WILL COME IN THE FORM OF
DYNAMICAL SUPPORT FROM A SHORTWAVE ADVANCING RAPIDLY EASTWARD AND
APPROACHING THE WESTERN GREAT LAKES AT THIS TIME. THE FAVORABLE
UPPER JET SUPPORT THAT WILL CROSS OUR AREA...COMBINED WITH THE
EXPECTED INSTABILITY IN PLACE BY THAT TIME WILL LEAD THE LIKELIHOOD
OF STRONG STORMS AS WE HEAD INTO THE EARLY EVENING HOURS.

SPC ANALYZED MLCAPE ACROSS NORTHERN ILLINOIS/NORTHERN INDIANA ARE
IN EXCESS OF 3000 J/KG AS OF 4PM AND THIS IS THE AREA WHERE WE ARE
EXPECTING ADDITIONAL SURFACE BASED CONVECTION TO BECOME BETTER
ORGANIZED AND THEN RIDE UP INTO OUR CWA BY EARLY EVENING. BULK SHEAR
IS VERY FAVORABLE FOR SUPERCELLS AND ORGANIZED SEVERE CONVECTION
THIS EVENING WITH STRONG WINDS THROUGH THE LAYER (18Z SOUNDING
SHOWED 55KT WINDS AT 10K FEET. WE CONTINUE TO REMAIN IN A MODERATE
RISK. THE PRIMARY RISK REMAINS DAMAGING WINDS BUT LARGE HAIL AND
ISOLATED TORNADOES...GIVEN THE FAVORABLE LOW LEVEL HELICITY
VALUES...CANNOT BE RULED OUT.

ANOTHER CONCERN FOR THIS EVENING WILL BE THE POTENTIAL FOR FLASH
FLOODING. THE GREATEST RAINFALL THIS MORNING OCCURRED ACROSS THE
SAGINAW VALLEY WHERE 2 TO 3 INCHES OF RAIN WAS REPORTED. WITH PWS
IN EXCESS OF 1.5 INCHES THIS EVENING...RAINFALL RATES THIS EVENING
WILL NEED TO BE CLOSELY MONITORED.

THE SHORTWAVE WILL QUICKLY EXIT TO OUR EAST BY MIDNIGHT. THE CONCERN
THEN TURNS TO THE POTENTIAL FOR FOG DEVELOPMENT. AT THIS TIME WE
WILL GO WITHOUT FOG IN THE ZONES UNTIL WE SEE HOW OUR ATMOSPHERE
RESPONDS AFTER THIS EVENINGS ACTIVITY.

ON THURSDAY WE TRANSITION TO A PREDOMINATE WESTERLY FLOW. A WEAK
COLD FRONT WILL APPROACH FROM THE NORTH LATE IN THE DAY.
TEMPERATURES ARE EXPECTED TO CLIMB INTO THE UPPER 80S UNDER PARTLY
CLOUDY SKIES AHEAD OF THE FRONT. THIS WILL HELP US TO REALIZE LOW
LEVEL LAPSE RATES (10C/KM) WHICH WILL REQUIRE US TO CONTINUE THE
MENTION OF THUNDERSTORMS THROUGH THE DAY. COOLER LOW LEVEL DEWPOINTS
AND A WEAK 850MB CAP LENDS ENOUGH CONFIDENCE TO CONTINUE WITH LOW
POPS.

LONG TERM...THURSDAY NIGHT THROUGH WEDNESDAY

GFS/NAM IN REASONABLE AGREEMENT THROUGH SATURDAY...HOWEVER THE GFS
IS A LITTLE QUICKER IN MOVING COLD FRONT SOUTH INTO THE OHIO VALLEY
THURSDAY EVENING. PREFER THE FASTER AND MORE AGGRESSIVE GFS COLD
FRONT SOLUTION AS THE NAM INITIALIZATION WAS 4 MB TO DEEP WITH
ASSOCIATED SURFACE LOW OVER NORTHERN ONTARIO. TREND IS FOR ZONAL
FLOW TO SLOWLY BUCKLE OVER THE GREAT LAKES REGION WITH NORTHWEST
FLOW HELPING TO DRIVE COLD FRONT SOUTH INTO THE OHIO VALLEY THURSDAY
THROUGH SATURDAY. WILL CONTINUE WITH A MENTION OF JUST SCATTERED
RAIN SHOWERS ACROSS THE SOUTHERN TWO TIER OF COUNTIES THURSDAY
NIGHT...AS MODELS SHOWING GOOD NEGATIVE MID LEVEL THETA-E ADVECTION
AND MID LEVEL DRYING...PUNCHING SOUTH ACROSS THE CWA. NAM IS A
LITTLE MORE SLUGGISH WITH COLD FRONT AND ALLOWS A COUPLE OF WEAK
WAVES RIDING THROUGH THE LOWER OHIO VALLEY TO HOLD THE FRONT UP EVEN
MORE. WILL HAVE TO WATCH THIS FRONT CLOSELY THOUGH AS IT NEARS THE
SOUTHERN EDGE OF THE WESTERLIES OVER THE NORTHERN OHIO VALLEY BY
FRIDAY MORNING. IN ADDITION FRONT STILL SOMEWHAT PARALLEL TO MID
LEVEL FLOW...EVEN IN GFS SOLUTION.

HIGH PRESSURE AND DRY NORTHWEST FLOW ALOFT TO BUILD INTO THE REGION
FOR FRIDAY THROUGH SUNDAY...THEN ECMWF AND GFS DIG TROF UPPER TROF
AXIS THROUGH THE REGION ON MONDAY...AND A WEAKER SECONDARY TROF ON
TUESDAY. WEAK GRADIENT AND LACK OF SIGNIFICANT RETURN FLOW WILL
LIMIT INSTABILITY OVER THE REGION THOUGH...SO MINIMAL POPS WITH
MENTION OF TRW THROUGH THE PERIOD. SOUTHERN EDGE OF WESTERLIES TO
MIGRATE NORTH AGAIN ON WEDNESDAY IN WAKE OF UPPER TROF AXIS...SO
CONTINUED CHANCE OF TRW ON WEDNESDAY AS WELL.

&&

.DTX WATCHES/WARNINGS/ADVISORIES...

MI...NONE.
LAKE HURON...NONE.
LAKE ST CLAIR...NONE.
MI WATERS OF LAKE ERIE...NONE.

&&

AVIATION...BT
SHORT TERM...SHULER
LONG TERM....GSS

YOU CAN OBTAIN YOUR LATEST NATIONAL WEATHER SERVICE FORECASTS ONLINE
AT WWW.WEATHER.GOV/DETROIT (ALL LOWER CASE).

Hazardous weather outlook, Jun 21, 5:01 PM EST, 2 hours 59 minutes before

HAZARDOUS WEATHER OUTLOOK...UPDATED
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
601 PM EDT WED JUN 21 2006

MIZ047>049-053>055-060>062-221115-
MIDLAND-BAY-HURON-SAGINAW-TUSCOLA-SANILAC-SHIAWASSEE-GENESEE-LAPEER-
601 PM EDT WED JUN 21 2006

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHEAST
MICHIGAN.

.DAY ONE...TONIGHT

THUNDERSTORMS THIS EVENING ARE LIKELY TO PRODUCE DAMAGING
WINDS...POSSIBLY AS HIGH AS 70 MPH...WITH A FEW STORMS ALSO
PRODUCING HAIL AS LARGE AS AN INCH IN DIAMETER. ISOLATED TORNADOES
ARE ALSO POSSIBLE. THESE STORMS WILL MOVE EAST AT 30 TO 40 MPH.

THERE WILL STILL BE A CHANCE OF THUNDERSTORMS AFTER MIDNIGHT
TONIGHT SOUTH OF INTERSTATE 69...BUT ANY LATE NIGHT STORMS ARE
NOT EXPECTED TO BE SEVERE AS THEY MOVE EAST AROUND 30 MPH.

A WARM FRONT WILL LIFT NORTHEAST ACROSS THE AREA THIS EVENING
AND COMBINE WITH A ROBUST UPPER LEVEL DISTURBANCE COMING OUT OF THE
CENTRAL PLAINS TO GIVE RISE TO THE HIGH THUNDERSTORM CHANCES THROUGH
10 PM.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

THERE IS ANOTHER CHANCE OF THUNDERSTORMS ON THURSDAY...AHEAD OF A
COLD FRONT CLEARING THE AREA THURSDAY EVENING. THERE IS A SLIGHT
CHANCE THAT SOME OF THESE THUNDERSTORMS WILL BE SEVERE...FROM
DETROIT SOUTHWARD TO THE OHIO BORDER.

THERE IS ALSO A CHANCE OF THUNDERSTORMS MONDAY THROUGH WEDNESDAY AS
AN UPPER LEVEL TROUGH MOVES THROUGH THE CENTRAL GREAT LAKES.

.SPOTTER INFORMATION STATEMENT...

DISPATCHERS PLEASE NOTIFY YOUR EMERGENCY MANAGERS IMMEDIATELY.
SPOTTER ACTIVATION IS LIKELY.

MIZ063-068>070-075-076-082-083-221115-
ST. CLAIR-LIVINGSTON-OAKLAND-MACOMB-WASHTENAW-WAYNE-LENAWEE-MONROE-
601 PM EDT WED JUN 21 2006

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTHEAST
MICHIGAN.

..TORNADO WATCH NUMBER 532 IS IN EFFECT UNTIL MIDNIGHT EDT...

.DAY ONE...TONIGHT

THUNDERSTORMS THIS EVENING ARE LIKELY TO PRODUCE DAMAGING
WINDS...POSSIBLY AS HIGH AS 70 MPH...WITH A FEW STORMS ALSO
PRODUCING HAIL AS LARGE AS AN INCH IN DIAMETER. ISOLATED TORNADOES
ARE ALSO POSSIBLE. THESE STORMS WILL MOVE EAST AT 30 TO 40 MPH.

THERE WILL STILL BE A CHANCE OF THUNDERSTORMS AFTER MIDNIGHT
TONIGHT SOUTH OF INTERSTATE 69...BUT ANY LATE NIGHT STORMS ARE
NOT EXPECTED TO BE SEVERE AS THEY MOVE EAST AROUND 30 MPH.

A WARM FRONT WILL LIFT NORTHEAST ACROSS THE AREA THIS EVENING
AND COMBINE WITH A ROBUST UPPER LEVEL DISTURBANCE COMING OUT OF THE
CENTRAL PLAINS TO GIVE RISE TO THE HIGH THUNDERSTORM CHANCES THROUGH
10 PM.

DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

THERE IS ANOTHER CHANCE OF THUNDERSTORMS ON THURSDAY...AHEAD OF A
COLD FRONT CLEARING THE AREA THURSDAY EVENING. THERE IS A SLIGHT
CHANCE THAT SOME OF THESE THUNDERSTORMS WILL BE SEVERE...FROM
DETROIT SOUTHWARD TO THE OHIO BORDER.

THERE IS ALSO A CHANCE OF THUNDERSTORMS MONDAY THROUGH WEDNESDAY AS
AN UPPER LEVEL TROUGH MOVES THROUGH THE CENTRAL GREAT LAKES.

.SPOTTER INFORMATION STATEMENT...

DISPATCHERS PLEASE NOTIFY YOUR EMERGENCY MANAGERS IMMEDIATELY.
SPOTTER ACTIVATION WILL BE NEEDED TONIGHT.

LCZ422-423-460-LEZ444-LHZ421-422-441>443-462>464-221115-
ST. CLAIR RIVER-DETROIT RIVER-LAKE ST. CLAIR-
MICHIGAN WATERS OF LAKE ERIE-OUTER SAGINAW BAY-INNER SAGINAW BAY-
PORT AUSTIN TO HARBOR BEACH MI-HARBOR BEACH TO PORT SANILAC MI-
PORT SANILAC TO PORT HURON MI-
LAKE HURON OFFSHORE BEYOND 5 NM FROM PORT AUSTIN TO HARBOR BEACH MI-
LAKE HURON OFFSHORE BEYOND 5 NM FROM HARBOR BEACH TO PORT SANILAC MI-
LAKE HURON OFFSHORE BEYOND 5 NM FROM PORT SANILAC TO PORT HURON MI-
601 PM EDT WED JUN 21 2006

THIS HAZARDOUS WEATHER OUTLOOK IS FOR LAKE ST CLAIR...THE MICHIGAN
WATERS OF LAKE ERIE AND LAKE HURON.

...TORNADO WATCH NUMBER 532 IS IN EFFECT UNTIL MIDNIGHT EDT...

.DAY ONE...TONIGHT

TORNADO WATCH NUMBER 532 IS IN EFFECT THROUGH MIDNIGHT FOR ALL
MARINE INTERESTS SOUTH OF LAKE HURON.

THUNDERSTORMS THIS EVENING ARE LIKELY TO PRODUCE DAMAGING
WINDS...POSSIBLY AS HIGH AS 70 MPH...WITH A FEW STORMS ALSO
PRODUCING HAIL AS LARGE AS AN INCH IN DIAMETER. ISOLATED TORNADOES
ARE ALSO POSSIBLE. THESE STORMS WILL MOVE EAST AT 30 TO 40 MPH.

THERE WILL STILL BE A CHANCE OF THUNDERSTORMS AFTER MIDNIGHT
TONIGHT SOUTH OF INTERSTATE 69...BUT ANY LATE NIGHT STORMS ARE
NOT EXPECTED TO BE SEVERE AS THEY MOVE EAST AROUND 30 MPH.

A WARM FRONT WILL LIFT NORTHEAST ACROSS THE AREA THIS EVENING
AND COMBINE WITH A ROBUST UPPER LEVEL DISTURBANCE COMING OUT OF THE
CENTRAL PLAINS TO GIVE RISE TO THE HIGH THUNDERSTORM CHANCES THROUGH
10 PM.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

THERE IS ANOTHER CHANCE OF THUNDERSTORMS ON THURSDAY...AHEAD OF A
COLD FRONT CLEARING THE AREA THURSDAY EVENING. THERE IS A SLIGHT
CHANCE THAT SOME OF THESE THUNDERSTORMS WILL BE SEVERE...FROM
DETROIT SOUTHWARD TO THE OHIO BORDER.

THERE IS ALSO A CHANCE OF THUNDERSTORMS MONDAY THROUGH WEDNESDAY AS
AN UPPER LEVEL TROUGH MOVES THROUGH THE CENTRAL GREAT LAKES.

.SPOTTER INFORMATION STATEMENT...

DISPATCHERS PLEASE NOTIFY YOUR EMERGENCY MANAGERS IMMEDIATELY.
SPOTTER ACTIVATION WILL BE NEEDED TONIGHT.

GSS

YOU CAN OBTAIN YOUR LATEST NATIONAL WEATHER SERVICE FORECASTS ONLINE
AT WWW.WEATHER.GOV/DETROIT (ALL LOWER CASE).

In the hours before

Local storm report, Jun 21, 5:19 PM EST, 2 hours 41 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
619 PM EDT WED JUN 21 2006

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0613 PM     HAIL             4 N ADRIAN              41.96N 84.04W
06/21/2006  E1.75 INCH       LENAWEE            MI   TRAINED SPOTTER

            REPORTED AT THE INTERSECTION OF EMERY ROAD AND TIPTON
            HIGHWAY.

0613 PM     FUNNEL CLOUD     4 N ADRIAN              41.96N 84.04W
06/21/2006                   LENAWEE            MI   TRAINED SPOTTER

&&

HATZOS

Local storm report, Jun 21, 5:30 PM EST, 2 hours 30 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
630 PM EDT WED JUN 21 2006

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0620 PM     HAIL             TECUMSEH                42.01N 83.94W
06/21/2006  E0.88 INCH       LENAWEE            MI   TRAINED SPOTTER

0623 PM     HAIL             ADRIAN                  41.90N 84.04W
06/21/2006  E1.00 INCH       LENAWEE            MI   TRAINED SPOTTER

0628 PM     HAIL             1 N TECUMSEH            42.02N 83.94W
06/21/2006  E1.25 INCH       LENAWEE            MI   AMATEUR RADIO

&&

HATZOS

Local storm report, Jun 21, 5:57 PM EST, 2 hours 3 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
657 PM EDT WED JUN 21 2006

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0632 PM     HAIL             TECUMSEH                42.01N 83.94W
06/21/2006  E1.50 INCH       LENAWEE            MI   LAW ENFORCEMENT

            REPORTED ON M-50 NORTH OF DOWNTOWN.

0635 PM     FUNNEL CLOUD     1 N PETERSBURG          41.91N 83.71W
06/21/2006                   MONROE             MI   LAW ENFORCEMENT

0650 PM     TSTM WND DMG     1 W DUNDEE              41.96N 83.68W
06/21/2006                   MONROE             MI   TRAINED SPOTTER

            TREES DOWN NEAR MILE MARKER 20 ON US-23.

0650 PM     TSTM WND GST     IDA                     41.91N 83.57W
06/21/2006  E60.00 MPH       MONROE             MI   TRAINED SPOTTER

            REPORTED AT THE INTERSECTION OF MOROCCO AND SECOR.
            1/2-INCH HAIL WAS ALSO OBSERVED.

0652 PM     HAIL             FAIRFIELD               41.81N 84.04W
06/21/2006  E1.00 INCH       LENAWEE            MI   AMATEUR RADIO

&&

HATZOS

Local storm report, Jun 21, 6:36 PM EST, 1 hour 24 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
736 PM EDT WED JUN 21 2006

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0655 PM     TORNADO          1 SE LAMBERTVILLE       41.74N 83.61W
06/21/2006                   MONROE             MI   PUBLIC

            PUBLIC REPORTED TORNADO TOUCHDOWN NEAR THE INTERSECTION
            OF STERNS AND DOUGLAS ROADS.

0623 PM     TSTM WND DMG     BRITTON                 41.99N 83.83W
06/21/2006                   LENAWEE            MI   TRAINED SPOTTER

            4 FT. DIAMETER HEALTHY TREES DOWNED ON BRITTON HWY JUST
            NORTH OF M-50.

&&

HATZOS

Local storm report, Jun 21, 7:56 PM EST, 4 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
856 PM EDT WED JUN 21 2006

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0547 PM     TORNADO          3 S ADDISON             41.94N 84.35W
06/21/2006                   LENAWEE            MI   LAW ENFORCEMENT

            POSSIBLE TORNADO REPORTED AT BURTON ROAD WITH TREES DOWN.

0705 PM     TSTM WND DMG     1 SW TEMPERANCE         41.76N 83.59W
06/21/2006                   MONROE             MI   LAW ENFORCEMENT

            REPORTED TREES DOWN DUE TO A POSSIBLE TORNADO.

0750 PM     HAIL             DUNDEE                  41.96N 83.66W
06/21/2006  E1.75 INCH       MONROE             MI   LAW ENFORCEMENT

0750 PM     HAIL             PETERSBURG              41.90N 83.71W
06/21/2006  E1.75 INCH       MONROE             MI   LAW ENFORCEMENT

&&

BMONTGOMERY

Local storm report, Jun 21, 8:00 PM EST, 0 minutes before

PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
900 PM EDT WED JUN 21 2006

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0650 PM     HAIL             DUNDEE                  41.96N 83.66W
06/21/2006  E1.75 INCH       MONROE             MI   LAW ENFORCEMENT

0650 PM     HAIL             PETERSBURG              41.90N 83.71W
06/21/2006  E1.75 INCH       MONROE             MI   LAW ENFORCEMENT

&&

BMONTGOMERY

The radar

The Detroit radar (KDTX), 102 km away, was scanning. The volume nearest the first event began at 00:58 UTC.

Open the radar archive at this moment

Event by event

2 flash flood. Local standard time, as filed.

Flash Flood, Lenawee

When: June 21, 8:00 PM EST to 11:00 PM EST
Where: Lenawee County, South Portion
Property damage: $150,000
Reported by: LAW ENFORCEMENT
Coordinates: 41.895, -84.066 (the zone’s center; the record gives no point)

Flash Flood, Monroe

When: June 21, 8:00 PM EST to 11:00 PM EST
Where: Monroe County, South Portion
Property damage: $50,000
Reported by: LAW ENFORCEMENT
Coordinates: 41.921, -83.494 (the zone’s center; the record gives no point)

What these are

Flash Flood: Flooding that begins within six hours of the rain that causes it, or of a dam or levee failure or ice jam release, often with deadly speed.

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

The same day elsewhere

Every storm in Michigan in 2006 Every state in 2006 This day in weather history Warnings in Michigan, June 2006

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: 5518712, 5518713.