A warm front moved across Minnesota and northwestern Wisconsin during the afternoon hours of the 2nd bringing a warm and moist airmass to the region. Thunderstorms developed during the evening hours ahead of a cold front pushing in from the west.
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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.
The episode as NWS DLH wrote it up.
A warm front moved across Minnesota and northwestern Wisconsin during the afternoon hours of the 2nd bringing a warm and moist airmass to the region. Thunderstorms developed during the evening hours ahead of a cold front pushing in from the west. These storms produced hail to around 1.5 inches in diameter and heavy rainfall leading to some minor ponding of water in spots. These storms also produced wind damage across Burnett, Sawyer, Washburn and Price counties as they moved to the east leaving trees and powerlines down in their wake.
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 Duluth, MN wrote its last area forecast discussion before the first event at Aug 2, 11:51 AM CST, 2 hours 54 minutes earlier.
Area Forecast Discussion National Weather Service Duluth MN 1251 PM CDT Tue Aug 2 2022 .DISCUSSION...(Today through Monday) Issued at 335 AM CDT Tue Aug 2 2022 Summary: Scattered showers and thunderstorms are possible this afternoon and evening over northern Minnesota into northwest Wisconsin. A few storms may be severe. Temperatures are forecast in the upper 80s and low 90s for portions of central MN into the St. Croix Valley in Wisconsin. Cooler tomorrow with a slight chance of isolated showers and storms. Dry conditions Thursday and Friday with very warm temps for the end of the work week. Another round of showers and storms appears likely Friday afternoon and Friday night, then trending cooler into the weekend. A baroclinic zone stretched from southern Saskatchewan into Missouri. A closed surface low was located over north-central South Dakota separating a cold and stationary front. There was a subtle shortwave trough from southwest Manitoba to south-central South Dakota, overtop the surface low. A few showers have developed over far northeast South Dakota and adjacent areas of southeast North Dakota and western Minnesota on the nose of a southwesterly low-level jet. Another band of mid-level clouds was found over northern Minnesota, northwest Ontario, northeast North Dakota and southern Manitoba in an area of weak 850 mb convergence. Forecast is somewhat challenging this morning with a number of possible failure modes. The stationary front is forecast to lift northeastward across Minnesota and the eastern Dakotas today as the low over northern South Dakota moves into northwest MN by 03.00Z. The shortwave trough over the Dakotas this morning will propagate eastward into central Minnesota by 18-21Z and may deamplify with time. Warmer temperatures and higher dewpoints south of the warm front will result in MLCAPE of 2000-4000 J/kg by late afternoon, but capping should result in little convection south of the boundary. Convergence seems to be maximized north of the front and deep layer shear is more favorable for organized convection over northeast Minnesota. Elevated storms may develop as the shortwave trough passes overhead during the afternoon. Instability won't be as rich north of the front, but should be sufficient for a few strong to severe thunderstorms. There's also a possibility the height falls ahead of the trough may enhance the showers over northeast South Dakota and vicinity and move them eastward with time today along with the veering 850 mb LLJ. Should that happen, cloud cover and convective debris will work to limit heating and destabilization. Deep layer shear in the vicinity of the front is sufficient for elevated storms to organize and persist into the afternoon as they move into northwest Wisconsin. The main severe weather risk with any storms will be large hail. In the absence of morning convection, high temperatures should be able to reach the low 90s in the Brainerd Lakes and the upper 80s into the US 2 corridor in Minnesota with heat indices in the upper 90s. If storms develop this morning, highs will likely be cooler, in the low to upper 80s. A cool front is forecast to move eastward across northern Minnesota overnight and into northwest Wisconsin Wednesday morning. A second and deeper shortwave will accompany the cold front. A westerly low-level jet ahead of the approaching trough and cold front may provide enough convergence for another band of showers and storms to develop over southern Manitoba and northern North Dakota during the evening and move toward the Northland overnight. Those storms will likely be surface-based initially becoming elevated as they move eastward overnight. Those storms may also pose a risk of large hail and damaging wind gusts, should they develop. Cool cyclonic flow aloft will keep a chance of showers and perhaps a thunderstorm in the forecast for Wednesday, particularly across far northern Minnesota and adjacent areas of northwest Ontario. Temperatures will trend cooler in the wake of the cold front with strong west or northwest winds. High pressure will move through the region Thursday and Friday with southerly return flow to develop on Friday. Temperatures will once again climb into the upper 80s to low 90s away from Lake Superior. This warm up should be short-lived with a cool front forecast to arrive Friday night or Saturday morning. There will be another chance of showers and storms ahead of the front as it moves through. A few strong storms are not out of the question, particularly if the front arrives during the late afternoon or evening hours on Friday. Forecast confidence further decreases later into the weekend. There may be a few shower and storm chances Sunday into early next week, but models diverge significantly Saturday and beyond. && .AVIATION...(For the 18Z TAFS through 18Z Wednesday afternoon) Issued at 1251 PM CDT Tue Aug 2 2022 Isolated thunderstorms have developed along a warm front stretching from Duluth to Grand Rapids to Bemidji. A storm could affect DLH for the next hour, but storms are likely to continue drifting northeast this afternoon. HIB may also see a storm or two this afternoon, though confidence is low on timing. Otherwise, breezy southeast winds will continue this afternoon. Some additional storms are possible this afternoon and evening, though with low confidence in timing and certainty. Any storms that develop later are likely not to be widespread. A cold front will pass through late tonight into Wednesday morning, bringing an end to rain chances. Winds will become northwesterly behind the front, and a bit of MVFR stratus may develop, most likely at INL for Wednesday morning. && .MARINE... Issued at 335 AM CDT Tue Aug 2 2022 A relaxed pressure gradient this morning will result in light winds. Look for northeast winds to increase to 10 to 15 knots by this afternoon ahead of a warm front which will lift northward today. A few showers and thunderstorms are possible this afternoon and tonight. A cold front will move over western Lake Superior Wednesday morning and will turn winds southwesterly and westerly at 10 to 20 knots. Winds will gradually diminish Wednesday night to 5 to 10 mph from the northwest. && .PRELIMINARY POINT TEMPS/POPS... DLH 79 65 78 55 / 20 30 10 0 INL 81 62 71 49 / 30 30 20 0 BRD 91 70 78 55 / 10 30 0 0 HYR 86 69 84 52 / 30 40 20 0 ASX 86 68 84 54 / 30 40 20 0 && .DLH WATCHES/WARNINGS/ADVISORIES... WI...None. MN...None. LS...None. && DISCUSSION...Huyck AVIATION...JDS MARINE...Huyck
Hazardous Weather Outlook National Weather Service Duluth MN 313 AM CDT Tue Aug 2 2022 MNZ010>012-018>021-025-026-033>038-WIZ001>004-006>009-031030- Koochiching-North St. Louis-Northern Cook/Northern Lake- North Itasca-Central St. Louis-Southern Lake/North Shore- Southern Cook/North Shore-North Cass-South Itasca-South Cass- Crow Wing-Northern Aitkin-South Aitkin-Carlton/South St. Louis- Pine-Douglas-Bayfield-Ashland-Iron-Burnett-Washburn-Sawyer-Price- 313 AM CDT Tue Aug 2 2022 This Hazardous Weather Outlook is for portions of northeast Minnesota and northwest Wisconsin. .DAY ONE...Today and Tonight A couple rounds of thunderstorms are possible today into tonight. A few thunderstorms could develop this morning over portions of the Northland with a better chance occurring this afternoon into tonight. Some of the storms could be severe, especially later this afternoon into tonight. The severe threats include large hail to two inches in diameter and damaging wind to 70 mph. Heavy rainfall will also be possible. .DAYS TWO THROUGH SEVEN...Wednesday through Monday Thunderstorms may linger Wednesday over parts northern Wisconsin and far northern Minnesota. A few thunderstorms are possible over portions of the Northland late Friday into Saturday. The threat for severe storms is low. .SPOTTER INFORMATION STATEMENT... Skywarn spotters may be needed. LSZ121-140>148-150-031030- Bayfield to Oak Point WI-Grand Portage to Grand Marais MN- Grand Marais to Taconite Harbor MN- Taconite Harbor to Silver Bay Harbor MN- Silver Bay Harbor to Two Harbors MN-Two Harbors to Duluth MN- Duluth MN to Port Wing WI-Port Wing to Sand Island WI- Sand Island to Bayfield WI-Oak Point to Saxon Harbor WI- Outer Apostle Islands Beyond 5 NM from Mainland- 313 AM CDT Tue Aug 2 2022 This Hazardous Weather Outlook is for portions of Lake Superior and the Nearshore waters of western Lake Superior. .DAY ONE...Today and Tonight Thunderstorms are possible this afternoon and tonight. Some of the storms could be severe producing large hail and winds in excess of 50 knots. .DAYS TWO THROUGH SEVEN...Wednesday through Monday A few thunderstorms may linger Wednesday morning. Melde More information may be obtained at the following web address: http://www.weather.gov/duluth (all lower case)
Special Weather Statement
National Weather Service Duluth MN
301 PM CDT Tue Aug 2 2022
MNZ019-022030-
Central St. Louis MN-
301 PM CDT Tue Aug 2 2022
...A strong thunderstorm will impact portions of central St. Louis
County through 330 PM CDT...
At 301 PM CDT, Doppler radar was tracking a strong thunderstorm near
Gilbert, or 27 miles east of Hibbing, moving east at 25 mph.
HAZARD...Winds gusts up to 30 mph and penny size hail.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow unsecured
objects around. Minor hail damage to outdoor objects is
possible.
This strong thunderstorm will be near...
Biwabik around 315 PM CDT.
Other locations in the path of this storm include Aurora.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Anyone outdoors, including anyone on or in the water, should seek
shelter inside a sturdy building or hard topped vehicle.
&&
LAT...LON 4737 9242 4746 9256 4762 9214 4755 9201
4744 9202
TIME...MOT...LOC 2001Z 249DEG 22KT 4745 9237
MAX HAIL SIZE...0.75 IN
MAX WIND GUST...30 MPH
KossenPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DULUTH MN
311 PM CDT TUE AUG 2 2022
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0306 PM HAIL 2 N MARKHAM 47.33N 92.22W
08/02/2022 M1.75 INCH ST. LOUIS MN PUBLIC
REPORT FROM MPING: GOLF BALL (1.75 IN.).
&&
KLLPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DULUTH MN
319 PM CDT TUE AUG 2 2022
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0316 PM HAIL 4 SE MCKINLEY 47.47N 92.34W
08/02/2022 M1.25 INCH ST. LOUIS MN PUBLIC
REPORT VIA SOCIAL MEDIA WITH PICTURE.
&&
KLLPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DULUTH MN
324 PM CDT TUE AUG 2 2022
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0322 PM HAIL 4 ENE MARKHAM 47.33N 92.15W
08/02/2022 E1.50 INCH ST. LOUIS MN PUBLIC
REPORT VIA SOCIAL MEDIA.
&&
KLLPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DULUTH MN
326 PM CDT TUE AUG 2 2022
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0300 PM HAIL MAKINEN 47.36N 92.37W
08/02/2022 M1.75 INCH ST. LOUIS MN PUBLIC
&&
KLLPRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE DULUTH MN
328 PM CDT TUE AUG 2 2022
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0316 PM HAIL 4 SSE MCKINLEY 47.46N 92.38W
08/02/2022 M0.75 INCH ST. LOUIS MN PUBLIC
REPORT VIA SOCIAL MEDIA WITH PICTURE.
&&
KLLThe Duluth radar (KDLH), 91 km away, was scanning. The volume nearest the first event began at 20:44 UTC.
18 thunderstorm wind, 5 hail. Local standard time, as filed.
A tied down and weighted National Park Service canopy tent was thrown and mangled.
Two trees were down across the East Trail on Raspberry Island.
Numerous small to medium-sized trees were down with some snapped at the base and others 20 feet up. Photos showed the trees to be down in a narrow swath about 1000 feet wide with trees laying in multiple directions.
Numerous trees were reported down or snapped. The reporter estimates that 80 plus trees were down on their 90 acre property and neighbors had damage to their home due to trees falling on it.
Four large trees were down across a road.
A 20-inch diameter limb off a white pine tree was down along with several other smaller limbs and power outages in the area.
A few large oak trees were uprooted.
Numerous trees and tree limbs were down with the trees being up to 12 inches in diameter.
Trees were down across roads throughout the Chippewa Flowage with power outages reported as well.
A poplar tree was downed across a driveway.
A photo was received showing a medium-size pine tree that had been snapped and fell on a house.
Trees were downed across roads and power lines with reports of power outages.
A tree was down across a road and power lines.
Trees were downed across roads and power lines in Hayward.
A 60 to 70 foot tall tree that was 2 feet in diameter was snapped off at the base.
A tree was downed onto a road and took out a power line as well.
Multiple trees were down across roads in the Chequamegon National Forest.
A tree was down onto a roadway.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Wisconsin in 2022Every state in 2022This day in weather historyWarnings in Wisconsin, August 2022
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: 1052428, 1052427, 1052431, 1052440, 1052414, 1052429, 1052415, 1052416, 1052422, 1052423, 1052426, 1052434, 1052417, 1052418, 1052424, 1052425, 1052433, 1052438, 1052432, 1052441, 1052436, 1052435, 1052439.