Numerous thunderstorms are redeveloping this evening across
southwestern Minnesota and northern Iowa. Multiple storms may impact
the same areas already hard hit from earlier today. These locations
won't need more than a quarter to half inch to result in flash
flooding. Slow moving storms have the potential to drop 2 inches per
hour. Extensive and potentially life-threatening flash flooding is
possible. Flash Flood Warnings are likely to be issued later this
evening.
* WHAT...Flash flooding caused by excessive rainfall continues to be
possible.
* WHERE...Portions of Minnesota, including the following areas,
Anoka, Blue Earth, Carver, Dakota, Faribault, Freeborn, Goodhue,
Hennepin, Le Sueur, McLeod, Nicollet, Ramsey, Rice, Scott, Sibley,
Steele, Waseca, Washington and Wright and west central Wisconsin,
including the following areas, Dunn, Eau Claire, Pepin, Pierce and
St. Croix.
* WHEN...Through Saturday afternoon.
* IMPACTS...Excessive runoff may result in flooding of rivers,
creeks, streams, and other low-lying and flood-prone locations.
Extensive street flooding and flooding of creeks and rivers are
possible.
* ADDITIONAL DETAILS...
- Saturated soils combined with additional very heavy rain
could result in flash flooding.
- http://www.weather.gov/safety/flood
* WHAT...The Minnesota Pollution Control Agency has issued an Air
Quality Alert for fine particles pollution. The Air Quality Index
(AQI) is expected to reach the Red or Unhealthy category.
* WHERE...Southern Minnesota.
* WHEN...Until 11 PM CDT this evening.
* IMPACTS...Some members of the general public may experience
health effects. Sensitive groups, such as people with lung
disease (including asthma), heart disease, and children and older
adults, may experience health effects.
* ADDITIONAL DETAILS...Heavy smoke will linger across southern
Minnesota and the Twin Cities metro though the day on Monday.
This band of smoke will slowly drift to the south throughout the
day and air quality will begin improving from north to south
within the alert area. Air quality should improve across the Twin
Cities metro during the afternoon and the rest of southern
Minnesota can expect improving air quality by the end of the day.
...SNOW CONTINUES IN WESTERN MINNESOTA. SOUTHERN AND EASTERN
MINNESOTA INTO WESTERN WISCONSIN HAVE TRANSITIONED TO RAIN, BUT
WILL RETURN TO MIXED PRECIPITATION THEN SNOW TUESDAY MORNING...
.Tonight, warmer air will keep rain as the dominant precipitation
type for most. Areas in far western Minnesota will likely remain
all snow. Colder air will move early Tuesday morning, causing a
changeover back to snow and introduce mixed precipitation in the
transition period. The transition will occur from west to east,
with any icing potential on the leading edge. A few more inches
of snow accumulation are possible. In western Minnesota, the main
concern is for strong northwest winds mid-morning Tuesday to gust
as high as 40 mph and cause blowing snow. The storm system will
exit on Tuesday.
* WHAT...Mixed precipitation expected. Total snow accumulations of
1 to 2 inches and ice accumulations of a light glaze. Winds
gusting as high as 35 mph.
* WHERE...Portions of east central and south central Minnesota
and northwest Wisconsin.
* WHEN...From 4 AM to 10 AM CDT Tuesday.
* IMPACTS...Plan on slippery road conditions. Patchy blowing snow
could significantly reduce visibility. The hazardous conditions
could impact the morning commute.
* WHAT...Heavy snow possible. Total snow accumulations of 6 to 10 inches
possible. Winds could gust as high as 40 mph.
* WHERE...Portions of central and east central Minnesota,
including the Twin Cities metro area.
* WHEN...From Sunday morning through Monday morning.
* IMPACTS...Travel could be very difficult to impossible. High
snowfall rates and blowing snow could significantly reduce
visibility.
* WHAT...Snow expected. Total snow accumulations of 3 to 5
inches.
* WHERE...Portions of central, east central and west central
Minnesota.
* WHEN...From 7 PM Thursday to 10 AM CDT Friday.
* IMPACTS...Plan on slippery road conditions. The hazardous
conditions could impact the morning commute.
* WHAT...Heat index values up to 98 expected.
* WHERE...Portions of central, east central, south central,
southeast, southwest and west central Minnesota and west
central Wisconsin.
* WHEN...Until 7 PM CDT Thursday.
* IMPACTS...Hot temperatures and high humidity may cause heat
illnesses to occur.
* WHAT...Dangerously hot conditions with heat index values up to
110 possible.
* WHERE...Portions of central, east central, south central,
southeast and west central Minnesota and west central
Wisconsin.
* WHEN...From Tuesday afternoon through Thursday evening.
* IMPACTS...Extreme heat and humidity will significantly
increase the potential for heat related illnesses,
particularly for those working or participating in outdoor
activities.
* ADDITIONAL DETAILS...The hottest day looks to be Wednesday but
that still may vary among Tuesday through Thursday. In
addition, overnight temperatures will only drop to the lower to
middle 70s, providing little relief from the effects of the heat
during the nighttime periods.
* WHAT...Heat index values up to 98 expected.
* WHERE...Portions of central, east central, south central,
southeast, southwest and west central Minnesota and west
central Wisconsin.
* WHEN...Until 7 PM CDT Thursday.
* IMPACTS...Hot temperatures and high humidity may cause heat
illnesses to occur.
* WHAT...The Minnesota Pollution Control Agency has issued an Air
Quality Alert for fine particles pollution. The Air Quality
Index (AQI) is expected to reach the Red or Unhealthy category.
* WHERE...Central and southern Minnesota.
* WHEN...From midnight tonight to 11 PM CDT Friday.
* IMPACTS...Some members of the general public may experience
health effects. Sensitive groups, such as people with lung
disease (including asthma), heart disease, and children and
older adults, may experience health effects.
* ADDITIONAL DETAILS...Heavy ground-level smoke from wildfires in
the Northwest Territories of Canada is moving south across
central Canada and towards Minnesota on Wednesday. A strong cold
front will bring this smoke across the entire state on Thursday.
Smoke will reach the border around midnight Thursday, the Twin
Cities around noon, and southern Minnesota by 3 PM. This smoke
may be heavy and air quality may reach the Red (Unhealthy) AQI
category for much of eastern Minnesota. Smoke will linger across
the eastern half of the state on Friday and fine particle levels
will continue to be high for most of the day. Winds will become
southerly Friday afternoon and smoke will begin to retreat away
from the state and disperse. Air quality should improve below
alert levels by the end of the day on Friday.
* WHAT...The Minnesota Pollution Control Agency has issued an Air
Quality Alert for fine particles pollution. The Air Quality Index
(AQI) is expected to reach the Orange or Unhealthy for Sensitive
Groups category.
* WHERE..Central Minnesota.
* WHEN...Until 11 PM CDT Friday.
* IMPACTS...Sensitive groups, such as people with lung disease
(including asthma), heart disease, and children and older adults,
may experience health effects.
* ADDITIONAL DETAILS...Heavy ground-level smoke from wildfires in
the Northwest Territories of Canada has reached northwest
Minnesota Thursday morning. Strong northwest winds will bring
this smoke into central Minnesota by Thursday afternoon. Smoke
levels are lower than expected and the alert has been downgraded
to Orange for the alert area. Winds will become southerly
overnight and will prevent the heaviest smoke from reaching
southern Minnesota. The alert has been cancelled for far
southern Minnesota, along with the Arrowhead region. Smoke will
linger across the alert area through Friday afternoon. Smoke
will continue to disperse as it retreats away from the state.
Air quality should improve below alert levels by late Friday.