Note:
The expiration time in the watch graphic is amended if the watch is
replaced, cancelled or extended.
Note: Click for
Watch Status Reports.
SEL1
URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 241
NWS Storm Prediction Center Norman OK
1050 PM EDT Tue Jun 2 2020
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
West central and southwest Lower Michigan
Lake Michigan
* Effective this Tuesday night and Wednesday morning from 1050 PM
until 400 AM EDT.
* Primary threats include...
Scattered damaging wind gusts to 70 mph possible
Isolated large hail events to 1 inch in diameter possible
SUMMARY...A convective system will move eastward across Lake
Michigan and may remain intact after reaching Lower Michigan.
Damaging gusts will be the main threat, along with isolated large
hail.
The severe thunderstorm watch area is approximately along and 55
statute miles north and south of a line from 20 miles northwest of
Muskegon MI to 25 miles north northeast of Lansing MI. For a
complete depiction of the watch see the associated watch outline
update (WOUS64 KWNS WOU1).
PRECAUTIONARY/PREPAREDNESS ACTIONS...
REMEMBER...A Severe Thunderstorm Watch means conditions are
favorable for 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. Severe thunderstorms can and occasionally do produce
tornadoes.
&&
OTHER WATCH INFORMATION...CONTINUE...WW 240...
AVIATION...A few severe thunderstorms with hail surface and aloft to
1 inch. Extreme turbulence and surface wind gusts to 60 knots. A few
cumulonimbi with maximum tops to 550. Mean storm motion vector
27040.
...Thompson
SEL1
URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 241
NWS Storm Prediction Center Norman OK
1050 PM EDT Tue Jun 2 2020
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
West central and southwest Lower Michigan
Lake Michigan
* Effective this Tuesday night and Wednesday morning from 1050 PM
until 400 AM EDT.
* Primary threats include...
Scattered damaging wind gusts to 70 mph possible
Isolated large hail events to 1 inch in diameter possible
SUMMARY...A convective system will move eastward across Lake
Michigan and may remain intact after reaching Lower Michigan.
Damaging gusts will be the main threat, along with isolated large
hail.
The severe thunderstorm watch area is approximately along and 55
statute miles north and south of a line from 20 miles northwest of
Muskegon MI to 25 miles north northeast of Lansing MI. For a
complete depiction of the watch see the associated watch outline
update (WOUS64 KWNS WOU1).
PRECAUTIONARY/PREPAREDNESS ACTIONS...
REMEMBER...A Severe Thunderstorm Watch means conditions are
favorable for 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. Severe thunderstorms can and occasionally do produce
tornadoes.
&&
OTHER WATCH INFORMATION...CONTINUE...WW 240...
AVIATION...A few severe thunderstorms with hail surface and aloft to
1 inch. Extreme turbulence and surface wind gusts to 60 knots. A few
cumulonimbi with maximum tops to 550. Mean storm motion vector
27040.
...Thompson
Note:
The Aviation Watch (SAW) product is an approximation to the watch area.
The actual watch is depicted by the shaded areas.
SAW1
WW 241 SEVERE TSTM MI LM 030250Z - 030800Z
AXIS..55 STATUTE MILES NORTH AND SOUTH OF LINE..
20NW MKG/MUSKEGON MI/ - 25NNE LAN/LANSING MI/
..AVIATION COORDS.. 50NM N/S /24WNW MKG - 28SSW MBS/
HAIL SURFACE AND ALOFT..1 INCH. WIND GUSTS..60 KNOTS.
MAX TOPS TO 550. MEAN STORM MOTION VECTOR 27040.
LAT...LON 44178651 43918439 42328439 42588651
THIS IS AN APPROXIMATION TO THE WATCH AREA. FOR A
COMPLETE DEPICTION OF THE WATCH SEE WOUS64 KWNS
FOR WOU1.
Watch 241 Status Report Messages:
STATUS REPORT #1 ON WW 241
VALID 030545Z - 030640Z
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 10 ESE BEH
TO 10 WNW GRR TO 30 NE GRR TO 20 WSW HTL.
..GLEASON..06/03/20
ATTN...WFO...GRR...
&&
STATUS REPORT FOR WS 241
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
MIC005-015-025-035-037-045-057-065-067-073-075-077-081-117-159-
030640-
MI
. MICHIGAN COUNTIES INCLUDED ARE
ALLEGAN BARRY CALHOUN
CLARE CLINTON EATON
GRATIOT INGHAM IONIA
ISABELLA JACKSON KALAMAZOO
KENT MONTCALM VAN BUREN
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
Note:
Click for Complete Product Text.
Tornadoes
Probability of 2 or more tornadoes
|
Low (10%)
|
Probability of 1 or more strong (EF2-EF5) tornadoes
|
Low (<2%)
|
Wind
Probability of 10 or more severe wind events
|
Mod (50%)
|
Probability of 1 or more wind events > 65 knots
|
Low (20%)
|
Hail
Probability of 10 or more severe hail events
|
Mod (30%)
|
Probability of 1 or more hailstones > 2 inches
|
Low (20%)
|
Combined Severe Hail/Wind
Probability of 6 or more combined severe hail/wind events
|
High (70%)
|
For each watch, probabilities for particular events inside the watch
(listed above in each table) are determined by the issuing forecaster.
The "Low" category contains probability values ranging from less than 2%
to 20% (EF2-EF5 tornadoes), less than 5% to 20% (all other probabilities),
"Moderate" from 30% to 60%, and "High" from 70% to greater than 95%.
High values are bolded and lighter in color to provide awareness of
an increased threat for a particular event.
weather.gov 
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