Severe Thunderstorm Warning 39, NWS Detroit, MI

935 
WWUS53 KDTX 192320
SVSDTX

Severe Weather Statement
National Weather Service Detroit/Pontiac MI
720 PM EDT Fri Jul 19 2019

MIC093-125-200015-
/O.CON.KDTX.SV.W.0039.000000T0000Z-190720T0015Z/
Oakland MI-Livingston MI-
720 PM EDT Fri Jul 19 2019

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 815 PM EDT
FOR SOUTHERN OAKLAND AND LIVINGSTON COUNTIES...

At 719 PM EDT, a severe thunderstorm was located near Brighton,
moving southeast at 30 mph.

HAZARD...60 mph wind gusts and penny size hail.

SOURCE...Radar indicated.

IMPACT...Expect damage to roofs, siding, and trees.

This severe storm will be near...
  Hamburg, South Lyon and Whitmore Lake around 730 PM EDT.
  Northville around 740 PM EDT.

Other locations impacted by this severe thunderstorm include
Franklin, Keego Harbor, Orchard Lake, Plainfield, Commerce, Rose
Center, Pinckney State Recreation Area, Lathrup Village, Bingham
Farms and Farmington Hills.

People attending Farmington Founders Festival, and Festival of Hope
should seek safe shelter immediately!

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 4275 8356 4245 8308 4242 8413 4267 8415
TIME...MOT...LOC 2319Z 331DEG 31KT 4256 8372 

HAIL...0.75IN
WIND...60MPH
 
$$

DG

206 
WWUS53 KDTX 192340
SVSDTX

Severe Weather Statement
National Weather Service Detroit/Pontiac MI
740 PM EDT Fri Jul 19 2019

MIC093-125-200015-
/O.CON.KDTX.SV.W.0039.000000T0000Z-190720T0015Z/
Oakland MI-Livingston MI-
740 PM EDT Fri Jul 19 2019

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 815 PM EDT
FOR SOUTHWESTERN OAKLAND AND SOUTHERN LIVINGSTON COUNTIES...

At 734 PM EDT, a severe thunderstorm was located near Brighton,
moving southeast at 30 mph.

HAZARD...60 mph wind gusts.

SOURCE...Public.

IMPACT...Expect damage to roofs, siding, and trees.

This severe storm will be near...
  South Lyon and Whitmore Lake around 740 PM EDT.

Other locations impacted by this severe thunderstorm include
Plainfield, Island Lake State Recreation Area, Commerce, New Hudson,
Walled Lake, Pinckney State Recreation Area, Farmington Hills,
Parkers Corners, Lakeland and White Lake.

People attending Farmington Founders Festival should seek safe
shelter immediately!

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 4270 8347 4244 8330 4242 8413 4259 8414
      4272 8351
TIME...MOT...LOC 2334Z 334DEG 24KT 4249 8373 

HAIL...<.75IN
WIND...60MPH
 
$$

DG

832 
WWUS53 KDTX 192344
SVSDTX

Severe Weather Statement
National Weather Service Detroit/Pontiac MI
744 PM EDT Fri Jul 19 2019

MIC093-125-200015-
/O.CON.KDTX.SV.W.0039.000000T0000Z-190720T0015Z/
Oakland MI-Livingston MI-
744 PM EDT Fri Jul 19 2019

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 815 PM EDT
FOR SOUTHWESTERN OAKLAND AND SOUTHERN LIVINGSTON COUNTIES...

At 744 PM EDT, a severe thunderstorm was located over Whitmore Lake,
or near Brighton, moving southeast at 20 mph.

HAZARD...70 mph wind gusts and penny size hail.

SOURCE...Public.

IMPACT...Expect considerable tree damage. Damage is likely to mobile 
         homes, roofs, and outbuildings.

This severe storm will be near...
  South Lyon around 750 PM EDT.

Other locations impacted by this severe thunderstorm include
Plainfield, Island Lake State Recreation Area, Commerce, New Hudson,
Walled Lake, Pinckney State Recreation Area, Farmington Hills,
Lakeland, White Lake and Chilson.

People attending Farmington Founders Festival should seek safe
shelter immediately!

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 4242 8413 4256 8413 4268 8347 4244 8334
TIME...MOT...LOC 2344Z 330DEG 17KT 4246 8374 

HAIL...0.75IN
WIND...70MPH
 
$$

DG

592 
WWUS53 KDTX 200007
SVSDTX

Severe Weather Statement
National Weather Service Detroit/Pontiac MI
807 PM EDT Fri Jul 19 2019

MIC093-125-200017-
/O.EXP.KDTX.SV.W.0039.000000T0000Z-190720T0015Z/
Oakland MI-Livingston MI-
807 PM EDT Fri Jul 19 2019

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN OAKLAND AND
SOUTHERN LIVINGSTON COUNTIES WILL EXPIRE AT 815 PM EDT...
        
The storm which prompted the warning has weakened, and has exited 
the warned area. Therefore, the warning will be allowed to expire. 
However gusty winds and heavy rain are still possible with this 
thunderstorm.

LAT...LON 4242 8413 4256 8413 4268 8347 4244 8334
TIME...MOT...LOC 0007Z 305DEG 21KT 4239 8360 

$$

DG

Area Forecast Discussion
National Weather Service Detroit/Pontiac MI
647 PM EDT Fri Jul 19 2019

.AVIATION...

Busy forecast period with several rounds of convection quite
possible. Ongoing convection will fester this evening and probably
not dissipate until after 03z. Will carry some mention of thunder
KPTK south to cover this period. A strong MCS will organized over
the upper midwest and encroach on the area late tonight. Hard to say
how far southeast it will make it into the area, but will at least
maintain thunder mention KMBS. Another round of storms is expected,
mainly Saturday afternoon/evening. The timing/location will largely
be dictated by evolution of overnight MCS.

For DTW...At least VCTS will be needed for several hours early this
evening as next batch of storms work southeast into the area. VFR
conditions are then expected overnight into Saturday with another
round of significant convection quite possible again late Saturday.

.DTW THRESHOLD PROBABILITIES...

* Moderate for thunderstorms this evening (thru ~02z)

* Low for ceilings aob 5kft at times overnight.

* Low for timing/coverage of tsras late in the forecast (~21z+)

&&

.PREV DISCUSSION...
Issued at 401 PM EDT Fri Jul 19 2019

DISCUSSION...

NEAR TERM / REST OF TODAY THROUGH TONIGHT

As of 400 PM EDT...Heat Advisories/Excessive Heat Warnings continue
as southeast Michigan continues to reside in the hottest and most
humid air of the year, with widespread heat indices peaking 100-110
degrees. These heat indices have been a byproduct of high
temperatures reaching into the lower 90s for most areas, and
dewpoints surging into the mid/upper 70s with arguably an 80 degree
reading not out of the question in the farmland areas of
Washtenaw/Lenawee/Monroe counties. The very hot and humid airmass has
also resulted in impressive instability building across the region,
with MLCAPEs of 2000-3000 J/kg coinciding with PWAT values around 2
inches.

Earlier morning convection that affected the Thumb has raced east,
spawning additional thunderstorms across southern Ontario and
eventually into the eastern Lake Erie/western Lake Ontario region by
this evening. Closer to home, this morning's convection left an
outflow boundary oriented west/east that has slowly been drifting
southward towards the M-59 corridor with time. Additionally, remnant
convective debris from the morning activity that has slowly been
eroding and giving way to a bubbling cumulus congestus field has
allowed for a quasi-differential heating boundary to also develop,
providing just enough moisture convergence for thunderstorm
development across portions of the Detroit metro/Ann Arbor over the
past few hours. This activity has exhibited vigorous storm
development in the loaded instability environment, with a few cores
reaching over 50 kft. Lack of more organized deep layer shear has
prevented more coherent storm organization thus far, but the strong
thermodynamic environment coupled with precip loading in updrafts
(freezing level around 15 kft) will enable the potential for a few
wet microbursts producing brief wind gusts as high as 40-60 mph.
Small hail will be tough to come by with the strongest storms though
given the very warm thermal profile in place through the column.
Acknowledging the impressive instability in place, SPC has now
placed almost all of southeast Michigan in a Slight Risk for severe
thunderstorms for this afternoon/evening.

The other big threat from thunderstorm activity this afternoon will
be the potential for locally heavy rain. Rainfall rates of 1-2
inches per hour will be possible with the strongest activity, and
may produce rain totals easily exceeding 2 inches in spots leading
to significant poor drainage flooding concerns, and possibly
localized flash flooding should storms hit more susceptible
urbanized areas.

Additional thunderstorm development is already underway across
Ingham/Livingston/western Oakland counties in the aforementioned
cumulus congestus field, and will likely continue further
development east/southeast towards the Detroit metro heading into
the evening hours. This second round of activity will also pose the
risk for brief wet microbursts, but will have to watch closely for
any better cold pool organization that could result not only in a
better wind threat, but an increased risk for excessive rainfall
over a larger area. Isolated thunderstorms will also be possible
further north across the Thumb as a weak midlevel impulse rotates
through.

Heading into the late evening hours, any lingering thunderstorms
should wane/depart east giving way to drier conditions for at least
the first half of the night. Attention will then shift to a robust
MCS/possible derecho that will be racing east across eastern
Minnesota into northern Wisconsin and eventually northern Lower
Michigan late tonight. After this afternoons/evening convection, all
indications point to the cap (12 C at 700 hPa) becoming
reestablished across lower Michigan, and pushing the nose of the
theta-e ridge further north outside of the immediate region. There
remains a mixed signal in model guidance regarding the track that
the MCS will take, but given the prevailing zonal flow aloft and
current trends in water vapor imagery across the upper Midwest,
forecast thinking is that the bulk of the remnants should remain
north of southeast Michigan. Will continue to play somewhat bearish
with the forecast north of I-69 and leave chance PoPs in the
forecast, with a current dry remainder of the night forecast further
south.

Outside of MCS watching tonight, it will continue to remain very
warm and muggy through the night as low temperatures only fall into
the mid/upper 70s for most areas, and possibly not even out of the
lower 80s for portions of the Detroit metro. These high minimum
temperatures will flirt with records for tonight and Saturday night
as well, and will bring little relief from the oppressive heat from
this afternoon.

SHORT TERM / SATURDAY THROUGH SUNDAY NIGHT

Heat Advisories and Excessive Heat Warnings will remain in effect
through Saturday as one more oppressively hot and humid day will
affect the region. Should the aforementioned nighttime MCS up north
actually stay to the north, and its associated convective debris
clouds are less opaque and allow for greater insolation, the
potential easily exists for Saturday to be even hotter than today.
Will leave the current heat headlines as is though, as there is a
bit of uncertainty again with cloud cover and possible remnant MCS
activity in the Heat Advisory counties to upgrade to a warning at
this time. However, those in the Excessive Heat Warning will be in
for the summer bake as high temperatures soar easily into the mid
90s, and possibly upper 90s in spots. With dewpoints still lingering
in the mid/upper 70s, several locations south of I-69 look to see
heat indices exceed 110 degrees at times, possibly peaking as high
as 115 degrees.

The continued heat and humidity will allow for another day of more
than plentiful instability to be in place as MLCAPEs look to
potentially exceed 3000 J/kg. More widespread coverage of
thunderstorms is expected by Saturday afternoon as weak midlevel
impulses ride through the zonal flow and interact with a slowly
southward moving cold front boundary. Coverage will initially be
greatest north of M-59 during the second half of the day, with
coverage eventually drifting southward with time heading into the
night. Isolated severe thunderstorms will be again be possible
Saturday with slightly better shear (30-35 knots) moving in from the
north and the continued ambient high instability environment.
Damaging wind gusts would be the primary threat. Locally heavy
rainfall and additional flooding concerns will also be possible,
especially for thunderstorms that move over areas that see high rain
totals Friday.

Saturday night will be another muggy night, although not quite as
muggy as Friday night, as the cold front slowly moving south across
the region allows low temperatures to range from the upper 60s/lower
70s north to mid 70s south. Dewpoints during this time will also
begin to slowly decrease into the upper 60s/lower 70s as well vs
mid/upper 70s.

Guidance has slowed considerably with the passage of the cold front,
and it now looks like it will get hung up at least for the southern
half of the region on Sunday. Additional scattered thunderstorms
will be possible as a result, with coverage slowly waning by late
Sunday night. High temperatures Sunday will be in the 80s with lows
Sunday night much cooler in the upper 50s/lower 60s. Heat indices
Sunday will also be notably cooler, and only reach into the lower
90s closer to the Ohio border.

For more on the record heat today and Saturday, refer to the Climate
section below.

LONG TERM / MONDAY THROUGH THURSDAY

Seasonably cool conditions expected Monday as continued cold/dry
advection from the north allows 850mb temps to settle around 10C.
This will translate to highs in the mid to upper 70s. Dew points in
the 50s will bring a noticeably less humid feel to the air compared
to this weekend.

The Great Lakes will be positioned beneath a region of negative
vorticity advection for the early week as a longwave trough slowly
advances to the eastern seaboard. The result will be dry conditions
and high pressure building in at the surface. High temperatures will
increase slightly each day, eventually reaching near normal values
in the lower 80s by midweek. There is a very low chance of showers
and storms on Thursday as height falls move overhead with an
approaching trough, otherwise dry weather looks to prevail into the
late week.

MARINE...

The warm and humid theme will continue both today and tomorrow for
the open waters which will result in continued chances for heavy
showers and strong thunderstorms. Primary concern for any
thunderstorm development will be strong winds that could produce
variable wind conditions and erratic wave development. Otherwise,
non-thunderstorm wind direction will remain from the southwest. A
cold front remains on track to push through the Great Lakes late
Saturday into Sunday which will veer wind direction from the
southwest to the northeast.

HYDROLOGY...

Hot and humid air mass remains parked over the Great Lakes both
today and tomorrow which will bring the continued chance to see
showers and storms, some strong. The source of showers and
thunderstorm development will be residual outflow boundaries from
previous storms and differential heating boundaries from prior cloud
cover. Strong thunderstorms will be capable of producing a quick 1-2
inches of rainfall accumulation in a short period of time, as has
been observed via radar estimates this afternoon, around the Ann
Arbor/Ypsilanti region. The most likely chance for thunderstorm
development this afternoon and evening will be around the greater
Metro Detroit area, but a possible storm complex, currently over MN,
may move downstream towards and across MI overnight which would be
the source of additional heavy rainfall. Additional strong showers
and storms are expected again tomorrow, but confidence is low at
this time regarding spatial extent and timing of thunderstorm
development. Overall, expect the continued chance for heavy showers
and strong storms both today and tomorrow. Rainfall totals will be
highly variable across SE MI, but localized flooding, including
flash flooding, remains possible.

CLIMATE...

July 19/20th                     July 19/20th
      Record Highs                     High Minimum

DTW  100 (1946) / 97 (1977)        78 (1986) / 77 (1932)

FNT   99 (1946) / 102 (1930)       78 (2013) / 75 (1977)

MBS   99 (1935) / 102 (1930)       74 (2013) / 73 (2011)

&&

.DTX WATCHES/WARNINGS/ADVISORIES...
MI...Heat Advisory until 8 PM EDT Saturday for MIZ047>049-053>055.

     Excessive Heat Warning until 8 PM EDT Saturday for MIZ060>063-
     068>070-075-076-082-083.

Lake Huron...NONE.
Lake St Clair...NONE.
Michigan waters of Lake Erie...NONE.
&&

AVIATION.....DG
DISCUSSION...IRL/TF
MARINE.......AM
HYDROLOGY....AM
CLIMATE......BT

You can obtain your latest National Weather Service forecasts online
at www.weather.gov/detroit.

Hazardous Weather Outlook
National Weather Service Detroit/Pontiac MI
432 PM EDT Fri Jul 19 2019

MIZ060>063-068>070-075-076-082-083-202115-
Shiawassee-Genesee-Lapeer-St. Clair-Livingston-Oakland-Macomb-
Washtenaw-Wayne-Lenawee-Monroe-
432 PM EDT Fri Jul 19 2019

This hazardous weather outlook is for portions of southeast
Michigan along and south of the I-69 corridor.

.DAY ONE...Tonight

An Excessive Heat Warning remains in effect through tonight. Refer
to the latest forecast information and heat headlines for more
details.

Additional thunderstorms are possible into this evening, especially
south of I-69 and east of US 23. Brief wind gusts 40-60 mph and
localized heavy rainfall that may lead to significant poor drainage
flooding, and possibly flash flooding, are the primary threats. Storm
motion will be from west to east around 40 mph.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday

An Excessive Heat Warning remains in effect through Saturday
evening. Refer to the latest forecast information and heat headlines for
more details.

Additional thunderstorms are possible Saturday through Sunday. Some
thunderstorms Saturday may be strong to severe, with gusty winds the
primary threat. Locally heavy rainfall resulting in poor drainage
flooding will also be a significant threat.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed the rest of today and tonight.

MIZ047>049-053>055-202115-
Midland-Bay-Huron-Saginaw-Tuscola-Sanilac-
432 PM EDT Fri Jul 19 2019

This hazardous weather outlook is for portions of southeast
Michigan along and north of the I-69 corridor.

.DAY ONE...Tonight

A Heat Advisory remains in effect through tonight. Refer to the
latest forecast information and heat headlines for more details.

Isolated thunderstorms are possible into this evening. Brief wind
gusts 40-60 mph and localized heavy rainfall are the primary
threats. Storm motion will be from west to east around 40 mph.

Thunderstorms associated with a remnant MCS will be possible late
tonight. Damaging wind gusts and locally heavy rainfall will be the
primary threats.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday

A Heat Advisory remains in effect through Saturday evening. Refer to
the latest forecast information and heat headlines for more details.

Additional thunderstorms are possible Saturday through Sunday. Some
thunderstorms Saturday may be strong to severe, with gusty winds the
primary threat. Locally heavy rainfall resulting in poor drainage
flooding will also be a significant threat.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed the rest of today and tonight.

LCZ460-LEZ444-LHZ361>363-421-422-441>443-462>464-202115-
Lake St Clair-
Michigan Waters of Lake Erie from Detroit River to North Cape MI-
Lake Huron from 5NM east of Mackinac Bridge to Presque Isle Lt
beyond 5 NM off shore-
Lake Huron from Presque Isle Light to Sturgeon Point MI beyond 5NM
off shore-
Lake Huron from Sturgeon Point to Alabaster MI beyond 5NM off shore-
Outer Saginaw Bay SW of Alabaster to Port Austin MI to Inner Saginaw
Bay-Inner Saginaw Bay SW of Point Au Gres to Bay Port MI-
Port Austin to Harbor Beach MI-Harbor Beach to Port Sanilac MI-
Port Sanilac to Port Huron MI-
Lake Huron from Port Austin to Harbor Beach beyond 5NM Off Shore-
Lake Huron from Harbor Beach to Port Sanilac beyond 5NM Off Shore-
Lake Huron from Port Sanilac to Port Huron beyond 5NM Off Shore-
432 PM EDT Fri Jul 19 2019

This hazardous weather outlook is for portions of Lake Erie, Lake
Huron and Lake St Clair.

.DAY ONE...Tonight

Several rounds of showers and thunderstorms are possible the
remainder of today and into tonight. The first round of storms will
continue to be possible mainly across the southern Lake Huron basin,
Lake St. Clair, and western Lake Erie into this evening, with a
second round of storms possible late tonight across northern and
central Lake Huron (including Saginaw Bay) associated with a possible
remnant MCS. Wind gusts in excess of 34 knots will be the primary
threat. Storm motion will be from west to east around 35 knots.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday

Additional thunderstorms are possible Saturday through Sunday. Some
thunderstorms Saturday may be strong to severe, with gusty winds the
primary threat.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed the rest of today and tonight.

You can obtain your latest National Weather Service forecasts online
at www.weather.gov/detroit.

IRL

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
502 PM EDT FRI JUL 19 2019

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

0424 PM     TSTM WND GST     2 ENE ROMULUS           42.23N 83.33W
07/19/2019  M43 MPH          WAYNE              MI   ASOS

            MEASURED AT DETROIT METRO AIRPORT.

&&

TF

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
508 PM EDT FRI JUL 19 2019

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

0313 PM     MARINE TSTM WIND 4 NNE GROSSE POINTE     42.43N 82.87W
07/19/2019  M45.00 MPH       LCZ460             MI   MESONET

            MEASURED AT GROSSE POINTE YACHT CLUB.

&&

TF

Special Weather Statement
National Weather Service Detroit/Pontiac MI
518 PM EDT Fri Jul 19 2019

MIZ053-060-061-068-192215-
Livingston MI-Shiawassee MI-Genesee MI-Saginaw MI-
518 PM EDT Fri Jul 19 2019

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN SAGINAW...EASTERN
SHIAWASSEE...GENESEE AND NORTHERN LIVINGSTON COUNTIES UNTIL 615 PM
EDT...

At 518 PM EDT, Doppler radar was tracking strong thunderstorms along
a line extending from near Birch Run to near Fowlerville. Movement
was east at 35 mph.

Half inch hail and winds in excess of 40 mph will be possible with
these storms.

Strong thunderstorms will be near...
  Birch Run around 525 PM EDT.
  Frankenmuth and Clio around 530 PM EDT.
  Hartland and Otisville around 545 PM EDT.
  Otter Lake around 550 PM EDT.

Other locations impacted by these storms include Atlas, Rankin, Burt,
Gera, Buena Vista Township, Layton Corners, Argentine, Conway
Township, Genesee and Vernon.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is also occurring with these storms, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

Frequent cloud to ground lightning is occurring with these storms.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

These storms may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

&&

LAT...LON 4342 8412 4344 8370 4322 8370 4322 8346
      4288 8345 4287 8369 4260 8368 4259 8414
      4277 8416 4278 8419
TIME...MOT...LOC 2118Z 273DEG 31KT 4329 8384 4269 8405

IRL

Special Weather Statement
National Weather Service Detroit/Pontiac MI
527 PM EDT Fri Jul 19 2019

MIZ076-083-192230-
Monroe MI-Wayne MI-
527 PM EDT Fri Jul 19 2019

...SPECIAL WEATHER STATEMENT...

At 527 PM EDT, Doppler radar was tracking strong thunderstorms along
a line extending from near Greenfield Village to near Carleton.
Movement was southeast at 20 mph.

Winds in excess of 30 mph will be possible with these storms.

Strong thunderstorms will be near...
  Flat Rock around 530 PM EDT.
  Wyandotte and Trenton around 555 PM EDT.
  Grosse Ile around 600 PM EDT.

Other locations impacted by these storms include Newport, Melvindale,
Gibraltar, New Boston, Woodland Beach, Stony Point, Rockwood,
Westland, Ecorse and Woodhaven.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is also occurring with these storms, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

Frequent cloud to ground lightning is occurring with these storms.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

&&

LAT...LON 4209 8353 4236 8355 4236 8354 4232 8305
      4229 8309 4224 8313 4217 8313 4212 8312
      4205 8315 4199 8313 4190 8325 4190 8330
TIME...MOT...LOC 2127Z 303DEG 18KT 4230 8328 4203 8331

Mann

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
528 PM EDT FRI JUL 19 2019

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

0420 PM     HAIL             2 SSW ROMULUS           42.19N 83.38W
07/19/2019  E1.00 INCH       WAYNE              MI   TRAINED SPOTTER

            VIDEO SENT VIA SOCIAL MEDIA.

&&

TF

Special Weather Statement
National Weather Service Detroit/Pontiac MI
629 PM EDT Fri Jul 19 2019

MIZ060>062-068-069-192330-
Livingston MI-Shiawassee MI-Genesee MI-Lapeer MI-Oakland MI-
629 PM EDT Fri Jul 19 2019

...SIGNIFICANT WEATHER ADVISORY FOR LAPEER...OAKLAND...SHIAWASSEE...
GENESEE AND LIVINGSTON COUNTIES UNTIL 730 PM EDT...

At 628 PM EDT, Doppler radar was tracking strong thunderstorms along
a line extending from near North Branch to near Perry. Movement was
east at 35 mph.

Pea size hail and winds in excess of 40 mph will be possible with
these storms.

Strong thunderstorms will be near...
  North Branch around 635 PM EDT.
  Lum around 640 PM EDT.
  Howell, Brown City, Byron and Oak Grove around 650 PM EDT.
  Linden around 700 PM EDT.
  Hartland and Fenton around 705 PM EDT.
  Holly around 715 PM EDT.
  Milford around 720 PM EDT.
  Clarkston around 730 PM EDT.

Other locations impacted by these storms include Franklin, Keego
Harbor, Goodland Township, Waterford, Plainfield, Rankin, Holly State
Recreation Area, Commerce, Silverwood and Conway Township.

People attending Farmington Founders Festival, and Festival of Hope
should prepare to seek safe shelter.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is also occurring with these storms, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

Frequent cloud to ground lightning is occurring with these storms.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

&&

LAT...LON 4299 8436 4322 8366 4324 8335 4332 8335
      4333 8312 4328 8312 4328 8300 4289 8299
      4289 8310 4245 8308 4242 8414 4277 8416
      4278 8436
TIME...MOT...LOC 2228Z 277DEG 31KT 4321 8327 4276 8418

IRL