Excessive heat warning for much of MN and western WI today
Severe thunderstorms moved across parts of northern Minnesota this morning, packing damaging winds and hail of 1-inch diameter in some spots.
There were several reports of trees blown over and other wind damage.
Here are some severe weather reports from the Grand Forks office of the National Weather Service, with location and county highlighted:
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PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
758 AM CDT FRI JUN 29 2018
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0447 AM TSTM WND DMG SABIN 46.78N 96.65W
06/29/2018 CLAY MN CO-OP OBSERVER
MANY LARGE TREES DOWN AROUND SABIN. POWER OUT FOR SEVERAL
HOURS. LOTS OF SHINGLES MISSING.
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0600 AM TSTM WND DMG 2 S KELLIHER 47.91N 94.45W
06/29/2018 Beltrami MN EMERGENCY MNGR
EXTENSIVE TREE DAMAGE THROUGHOUT THE AREA. REPORTED BY
EMERGENCY MANAGER.
0540 AM TSTM WND DMG 10 NW BEMIDJI 47.58N 95.03W
06/29/2018 Beltrami MN EMERGENCY MNGR
NUMEROUS TREES DOWN 10 MILES NORTHWEST OF BEMIDJI.
REPORTED BY EMERGENCY MANAGER.
And here are a few severe weather reports from the Duluth NWS office:
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DULUTH MN
839 AM CDT FRI JUN 29 2018
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0708 AM TSTM WND DMG 7 ENE GHEEN 47.99N 92.66W
06/29/2018 ST. LOUIS MN 911 CALL CENTER
SEVERAL PINE TREES RIPPED UP AT THE ROOTS
AND KNOCKED DOWN NEAR ELBOW LAKE. TIME
ESTIMATED BY RADAR.
0714 AM TSTM WND DMG HIBBING 47.40N 92.95W
06/29/2018 ST. LOUIS MN 911 CALL CENTER
LOTS OF TREES AND POWERLINES DOWNED. TIME
ESTIMATED BY RADAR.
0738 AM TSTM WND DMG ELY 47.91N 91.85W
06/29/2018 ST. LOUIS MN PUBLIC
TREES ARE DOWN IN THE ELY AREA, INCLUDING ON
POWER LINES. THE POWER IS OUT.
0735 AM TSTM WND DMG EVELETH 47.46N 92.54W
06/29/2018 ST. LOUIS MN 911 CALL CENTER
LOTS OF TREES AND POWER LINES DOWNED. TIME
ESTIMATED BY RADAR.
0742 AM TSTM WND DMG BABBITT 47.70N 91.94W
06/29/2018 ST. LOUIS MN 911 CALL CENTER
LOTS OF TREES AND POWER LINES DOWNED. TIME
ESTIMATED BY RADAR.
Excessive heat warning
Temperatures will rise into the upper 90s in the Twin Cities metro area and much of southern Minnesota and western Wisconsin this afternoon, with dew point temperatures in the 70s. That combination of heat and moisture will generate peak heat index values of 104 to 109 in many areas:
The maps above show the counties for which the Twin Cities NWS office has warning responsibility.
Excessive heat warnings have been issued for the Twin Cities metro area and for much of the southern half of Minnesota, plus parts of western Wisconsin, from 11 a.m. to 10 p.m. today:
Portions of southwestern Minnesota and west-central Minnesota, plus areas from Brainerd to Hinckley, are in a heat advisory this afternoon and evening.
Details of the excessive heat warning:
URGENT - WEATHER MESSAGE
National Weather Service Twin Cities/Chanhassen MN
243 AM CDT Fri Jun 29 2018
MNZ044-045-049>053-057>063-065>070-073>078-082>085-091>093-
WIZ014>016-023>028-291800-
/O.CON.KMPX.EH.W.0003.180629T1600Z-180630T0300Z/
Mille Lacs-Kanabec-Stearns-Benton-Sherburne-Isanti-Chisago-
Kandiyohi-Meeker-Wright-Hennepin-Anoka-Ramsey-Washington-Renville-
McLeod-Sibley-Carver-Scott-Dakota-Redwood-Brown-Nicollet-Le Sueur-
Rice-Goodhue-Watonwan-Blue Earth-Waseca-Steele-Martin-Faribault-
Freeborn-Polk-Barron-Rusk-St. Croix-Pierce-Dunn-Pepin-Chippewa-
Eau Claire-
Including the cities of Princeton, Mora, St Cloud, Foley,
Elk River, Cambridge, Center City, Willmar, Litchfield,
Monticello, Minneapolis, Blaine, St Paul, Stillwater, Olivia,
Hutchinson, Gaylord, Chaska, Shakopee, Hastings, Redwood Falls,
New Ulm, St Peter, Le Sueur, Faribault, Red Wing, St James,
Mankato, Waseca, Owatonna, Fairmont, Blue Earth, Albert Lea,
Osceola, Rice Lake, Ladysmith, Hudson, River Falls, Prescott,
Menomonie, Durand, Chippewa Falls, and Eau Claire
243 AM CDT Fri Jun 29 2018
...EXCESSIVE HEAT WARNING REMAINS IN EFFECT FROM 11 AM THIS
MORNING TO 10 PM CDT THIS EVENING...
* TEMPERATURE...High temperatures in the mid to upper 90s will
combine with high humidity to yield dangerous heat indices
today. Peak heat indices in the 100 to 110 range are expected.
* IMPACTS...Heat illnesses are possible for those active
outdoors or those susceptible to heat illnesses, such as
children and the elderly.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
An Excessive Heat Warning means that a prolonged period of
dangerously hot temperatures will occur. The combination of hot
temperatures and high humidity will combine to create a dangerous
situation in which heat illnesses are likely. Drink plenty of
fluids...stay in an air-conditioned room...stay out of the sun...
and check up on relatives and neighbors.
When possible...reschedule strenuous activities to early morning
or evening. Know the signs and symptoms of heat exhaustion and
heat stroke. Wear light weight and loose fitting clothing when
possible and drink plenty of water.
Here are some heat safety tips, from the National Oceanic and Atmospheric Administration:
Heat exhaustion and heat stroke have these symptoms:
You'll want to take it easy out there today!
If you don't have air conditioning, there are places to go to stay cool.
Thunderstorm chances
The morning wave of thunderstorms will exit northeastern Minnesota by late morning. There could be an isolated shower/thunderstorm in west-central and northern Minnesota later this afternoon, with a better chance of showers and thunderstorm later this evening and overnight Friday night. Some of the thunderstorms could be severe.
The Twin Cities metro area and southeastern Minnesota will see our best chance of thunderstorms late Saturday afternoon and Saturday night into Sunday.
NOAA’s North American Mesoscale forecast model shows the potential rain pattern Saturday afternoon through Sunday:
The color chart to the right of the loop refers to the strength of the signal that returns to the radar, not to the amount of rain.
It will probably rain in some areas that look dry in the loop, but it shows the general pattern within the NAM model.
Some strong to severe thunderstorms are possible Saturday and Saturday night.
The Storm Prediction Center of the National Weather Service shows a slight risk of severe thunderstorms in the metro area and points to the south and southeast Saturday and Saturday night:
Slight risk means that scattered severe thunderstorms are possible.
Updated weather information can be heard on the Minnesota Public Radio Network, and updates are also posted on the MPR News live weather blog.
Weekend temps
Cooler highs are expected on Saturday, with 80s for about the southeastern half of Minnesota, and 70s northwest:
Sunday will feature mostly 70s, with lower 80s southeast:
The Sunday temps will feel much cooler than our Friday temps!