Alert archive / Minnesota / Tornado Warnings in 2024
Tornado Warning 32, NWS Twin Cities, MN
NWS Twin Cities, MN issued this tornado warning at Aug 29, 2024, 4:32 PM CDT for Anoka County, Chisago County, Isanti County, Minnesota. It was in force for 28 min. 6 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Aug 29, 2024, 4:32 PM CDT (21:32 UTC)
- Expired
- Aug 29, 2024, 5:00 PM CDT
- In force
- 28 min
- Issued by
- NWS Twin Cities, MN
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 0.75 in
Counties Anoka County, MN, Chisago County, MN, Isanti County, MN
The radar
The Minneapolis radar (KMPX), 71 km from the middle of the area, began a volume at 21:31 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Aug 29, 4:32 PM CDT | TORNADO | 3 Nne Oak Grove, MN | EF1 tornado developed north of Oak Grove in Anoka County and continued northeast 9.7 miles to 5 miles ESE of Isanti in Isanti County. Trees were uprooted, two farm outbuildings were destroyed, and a pole barn sustained roof damage. Max winds were 95 mph. |
| Aug 29, 4:34 PM CDT | TSTM WND DMG | 1 Ssw Bethel, MN | Numerous large trees down, overturned truck and camper trailer blocking road near the intersection of 229th Ave and Holly St. Time estimated from radar. |
| Aug 29, 4:43 PM CDT | TSTM WND DMG | 4 Ese Isanti, MN | Photo report via X. Multiple large trees downed or snapped in half. Time estimated from radar. |
| Aug 29, 4:44 PM CDT | TORNADO | 5 Ese Isanti, MN | A storm survey confirmed a tornado east southeast of Isanti. |
| Aug 29, 4:45 PM CDT | TORNADO | 4 E Isanti, MN | Law enforcement confirmed a tornado touched down and has since lifted near the intersection of Durant St and County Rd 5 east of Isanti. |
| Aug 29, 4:46 PM CDT | TSTM WND DMG | 4 E Isanti, MN | Delayed report of 8 inch, live trees snapped off halfway up near County Road 5 and Durant St east of Isanti. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Aug 29, 2:33 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Minneapolis, MN (KMPX), launched 12:00Z, 9.5 hours before the alert went out and 72 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 832 J/kg
- Mixed-layer CIN
- -148 J/kg
- Mixed-layer LCL
- 584 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 242 m²/s²
- 0-3 km storm-relative helicity
- 296 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 8.9
The text
As transmitted.
068
WFUS53 KMPX 292132
TORMPX
MNC003-025-059-292200-
/O.NEW.KMPX.TO.W.0032.240829T2132Z-240829T2200Z/
BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Twin Cities/Chanhassen MN
432 PM CDT Thu Aug 29 2024
The National Weather Service in the Twin Cities has issued a
* Tornado Warning for...
West central Chisago County in east central Minnesota...
North central Anoka County in east central Minnesota...
Southeastern Isanti County in east central Minnesota...
* Until 500 PM CDT.
* At 431 PM CDT, a severe thunderstorm capable of producing a tornado
was located near St. Francis, or 11 miles south of Cambridge,
moving northeast at 45 mph.
HAZARD...Tornado.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed.
Damage to roofs, windows, and vehicles will occur. Tree
damage is likely.
* This dangerous storm will be near...
Cambridge, East Bethel, and St. Francis around 435 PM CDT.
Isanti around 440 PM CDT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.
&&
LAT...LON 4531 9326 4536 9342 4565 9322 4556 9296
TIME...MOT...LOC 2131Z 214DEG 41KT 4538 9331
TORNADO...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
$$
Borghoff2 follow-up statements
243
WWUS53 KMPX 292141
SVSMPX
Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
441 PM CDT Thu Aug 29 2024
MNC003-292151-
/O.CAN.KMPX.TO.W.0032.000000T0000Z-240829T2200Z/
Anoka MN-
441 PM CDT Thu Aug 29 2024
...THE TORNADO WARNING FOR NORTH CENTRAL ANOKA COUNTY IS CANCELLED...
The tornadic thunderstorm which prompted the warning has moved out
of the warned area. Therefore, the warning has been cancelled.
A Severe Thunderstorm Watch remains in effect until 900 PM CDT for
east central Minnesota.
&&
LAT...LON 4541 9315 4541 9329 4564 9319 4556 9296
TIME...MOT...LOC 2141Z 227DEG 39KT 4544 9320
$$
MNC025-059-292200-
/O.CON.KMPX.TO.W.0032.000000T0000Z-240829T2200Z/
Chisago MN-Isanti MN-
441 PM CDT Thu Aug 29 2024
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 500 PM CDT FOR WEST
CENTRAL CHISAGO AND SOUTHEASTERN ISANTI COUNTIES...
At 441 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Isanti, or 6 miles south of Cambridge, moving
northeast at 45 mph.
HAZARD...Tornado.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed. Damage
to roofs, windows, and vehicles will occur. Tree damage is
likely.
This tornadic thunderstorm will remain over mainly rural areas of
west central Chisago and southeastern Isanti Counties, including the
following locations... Weber, Grandy, Spring Lake, Bodum, and Athens.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.
&&
LAT...LON 4541 9315 4541 9329 4564 9319 4556 9296
TIME...MOT...LOC 2141Z 227DEG 39KT 4544 9320
TORNADO...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
$$
Borghoff847
WWUS53 KMPX 292150
SVSMPX
Severe Weather Statement
National Weather Service Twin Cities/Chanhassen MN
450 PM CDT Thu Aug 29 2024
MNC025-059-292200-
/O.CON.KMPX.TO.W.0032.000000T0000Z-240829T2200Z/
Chisago MN-Isanti MN-
450 PM CDT Thu Aug 29 2024
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 500 PM CDT FOR WEST
CENTRAL CHISAGO AND SOUTHEASTERN ISANTI COUNTIES...
At 450 PM CDT, a confirmed tornado was located near Cambridge, moving
northeast at 45 mph.
HAZARD...Damaging tornado.
SOURCE...Law enforcement confirmed tornado.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed. Damage
to roofs, windows, and vehicles will occur. Tree damage is
likely.
Locations impacted include...
Spring Lake, Weber, and Bodum.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
To repeat, a tornado is on the ground. TAKE COVER NOW! Move to a
basement or an interior room on the lowest floor of a sturdy
building. Avoid windows. If you are outdoors, in a mobile home, or in
a vehicle, move to the closest substantial shelter and protect
yourself from flying debris.
&&
LAT...LON 4546 9310 4550 9321 4563 9316 4556 9296
4548 9306
TIME...MOT...LOC 2150Z 214DEG 41KT 4553 9311
TORNADO...OBSERVED
MAX HAIL SIZE...<.75 IN
$$
BorghoffThe office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 29, 2:11 PM CDT | Severe Thunderstorm Warning | MPX | Kandiyohi, Stearns | 34 min |
| Aug 29, 2:17 PM CDT | Severe Thunderstorm Warning | MPX | Brown, Nicollet | 28 min |
| Aug 29, 2:29 PM CDT | Severe Thunderstorm Warning | MPX | Kandiyohi | 31 min |
| Aug 29, 2:33 PM CDT | Severe Thunderstorm Warning | MPX | Brown, Nicollet | 27 min |
| Aug 29, 2:37 PM CDT | Severe Thunderstorm Warning | MPX | Kandiyohi, Stearns, Todd | 38 min |
| Aug 29, 2:44 PM CDT | Severe Thunderstorm Warning | MPX | Nicollet, Sibley | 46 min |
| Aug 29, 2:54 PM CDT | Severe Thunderstorm Warning | MPX | Benton, Meeker, Morrison, Sherburne, Stearns | 51 min |
| Aug 29, 3:05 PM CDT | Severe Thunderstorm Warning | MPX | McLeod, Meeker, Wright | 40 min |
| Aug 29, 3:12 PM CDT | Severe Thunderstorm Warning | MPX | Carver, McLeod, Scott, Sibley | 48 min |
| Aug 29, 3:31 PM CDT | Tornado Warning | MPX | Mille Lacs, Morrison | 29 min |
| Aug 29, 3:37 PM CDT | Severe Thunderstorm Warning | MPX | Benton, Mille Lacs, Morrison | 53 min |
| Aug 29, 3:38 PM CDT | Special Weather Statement | MPX | Watonwan | 37 min |
| Aug 29, 3:42 PM CDT | Severe Thunderstorm Warning | MPX | Anoka, Carver, Dakota, Hennepin, Ramsey, Scott | 48 min |
| Aug 29, 3:50 PM CDT | Severe Thunderstorm Warning | MPX | Blue Earth, Brown, Nicollet, Watonwan | 25 min |
| Aug 29, 3:52 PM CDT | Tornado Warning | MPX | Blue Earth, Brown, Watonwan | 23 min |
| Aug 29, 4:08 PM CDT | Severe Thunderstorm Warning | MPX | Blue Earth, Faribault, Le Sueur, Nicollet, Waseca | 36 min |
| Aug 29, 4:18 PM CDT | Severe Thunderstorm Warning | MPX | Anoka, Chisago, Dakota, Hennepin, Ramsey, Washington | 57 min |
| Aug 29, 4:53 PM CDT | Tornado Warning | MPX | Chisago | 20 min |
| Aug 29, 4:54 PM CDT | Special Weather Statement | MPX | Steele, Waseca | 36 min |
| Aug 29, 4:58 PM CDT | Severe Thunderstorm Warning | MPX | Chisago | 32 min |
| Aug 29, 5:30 PM CDT | Special Weather Statement | MPX | Washington | 30 min |
| Aug 29, 5:34 PM CDT | Special Weather Statement | MPX | Steele | 26 min |
Nearby
Tornado Warnings in Minnesota, 2024Every tornado warning in 2024Tornadoes in 2024
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.