Alert archive / Minnesota / Special Weather Statements in 2024

Special Weather Statement, NWS Twin Cities, MN

August 29, 2024Steele County, Waseca County, Minnesota

NWS Twin Cities, MN issued this special weather statement at Aug 29, 2024, 4:54 PM CDT for Steele County, Waseca County, Minnesota. It was in force for 36 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Aug 29, 2024, 4:54 PM CDT (21:54 UTC)
Expired: Aug 29, 2024, 5:30 PM CDT
In force: 36 min
Issued by: NWS Twin Cities, MN
Hail: 0.00 in
Wind: 50

Counties Steele County, MN, Waseca County, MN

The radar

The Minneapolis radar (KMPX), 83 km from the middle of the area, began a volume at 21:55 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.

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 9.9 hours before the alert went out and 84 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

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

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Twin Cities, MN wrote its last area forecast discussion before this special weather statement went out at Aug 29, 3:17 PM CDT, 1 hour 37 minutes earlier. Its key messages:

A line of severe storms is ongoing this afternoon and will continue through this evening. The main threats are damaging winds and heavy rainfall, but a couple of tornadoes and large hail are also possible.
Following this event, the weather will be pleasant through early next week.

Area forecast discussion, Aug 29, 3:17 PM CDT, 1 hour 37 minutes before

Area Forecast Discussion
National Weather Service Twin Cities/Chanhassen MN
317 PM CDT Thu Aug 29 2024

.KEY MESSAGES...

- A line of severe storms is ongoing this afternoon and will
continue through this evening. The main threats are damaging winds
and heavy rainfall, but a couple of tornadoes and large hail are
also possible.

- Following this event, the weather will be pleasant through early
next week.
&&

.DISCUSSION...
Issued at 216 PM CDT Thu Aug 29 2024

Severe storms are ongoing across west central and south central
Minnesota ahead of a front. Storm mode is somewhat messy, but these
initial storms will pose the greatest risk for a tornado or two
before things are expected to grow upscale and transition to more of
a damaging wind threat. The question is when/how far east this
transition will happen. SPC mesoanalysis suggests the environment is
more favorable for tornadoes across east central Minnesota into
western Wisconsin, so if cells can remain discreet enough, the
tornado threat will persist. The 19z MPX special sounding shows
impressive CAPE of 4200 J/kg and 35kts of shear, which is
considerably more shear than we saw with Monday's round of severe
weather. While pwats are around 1.5" (down from over 2" Monday
evening), locally heavy rain is still possible with QPF totals
around 1 to 1.5". Storms are also about an hour or so ahead of our
initial thinking, so expecting storms to reach the metro closer to
4:30-5pm and Wisconsin by 6pm. Showers aren't expected to linger
long behind this initial line, so thinking any precip will come to
an end by midnight.

Following this system, tranquil weather will prevail through the end
of the period. Temperatures this weekend will be in the low 80s for
Saturday before falling into the low 70s for Sunday and Monday.
Temperatures slowly creep back into the 80s by midweek with dry
weather continuing.

&&

.AVIATION /18Z TAFS THROUGH 18Z FRIDAY/...
Issued at 1240 PM CDT Thu Aug 29 2024

The IFR/MVFR stratus deck has shifted NE, but will still impact the
western Wisconsin sites for the early afternoon. A pocket of
clearing is visible over much of central Minnesota, while convection
is becoming more widespread along the western MN border. As the
front sags southeast, a period of heavy rain and convective wind
gusts will likely impact each site. Behind the line, cigs will
quickly rise and winds will weaken and shift out of the NW.
There is a chance for low stratus and patchy fog for some locations
overnight, especially over western Wisconsin.

KMSP...Timing is still on track, so not too much change for the
ongoing TAF. Scattered storms could arrive ahead of the front
around 20z, with the main line moving through close to 21-23z.
Some models indicate that more isolated storms storms could fill
in behind the main line, so we have maintained the tempo
through 01z for now.

/OUTLOOK FOR KMSP/
SAT...VFR. Wind SW 10-15kts.
SUN...VFR. Wind N 5-10kts.
MON...VFR. Wind S 5-10kts.

&&

.MPX WATCHES/WARNINGS/ADVISORIES...
MN...None.
WI...None.

&&

DISCUSSION...Dye
AVIATION...BED

Hazardous weather outlook, Aug 29, 3:38 PM CDT, 1 hour 16 minutes before

Hazardous Weather Outlook
National Weather Service Twin Cities/Chanhassen MN
338 PM CDT Thu Aug 29 2024

MNZ041>045-047>070-073>078-082>085-091>093-WIZ014>016-023>028-
302045-
Douglas-Todd-Morrison-Mille Lacs-Kanabec-Stevens-Pope-Stearns-
Benton-Sherburne-Isanti-Chisago-Lac Qui Parle-Swift-Chippewa-
Kandiyohi-Meeker-Wright-Hennepin-Anoka-Ramsey-Washington-
Yellow Medicine-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-Eau Claire-
338 PM CDT Thu Aug 29 2024

This Hazardous Weather Outlook is for portions of central and
southern Minnesota, and west central Wisconsin.

.DAY ONE...Tonight.

Strong to severe thunderstorms will continue through late this
evening, mainly across eastern Minnesota and western Wisconsin.
Locally heavy rainfall is also possible.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

SKYWARN spotter activation may be needed.

In the hours before

Local storm report, Aug 29, 4:11 PM CDT, 43 minutes before

Preliminary Local Storm Report
National Weather Service Twin Cities/Chanhassen MN
411 PM CDT Thu Aug 29 2024

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0406 PM     Tstm Wnd Dmg     2 E Victoria            44.87N 93.62W
08/29/2024                   Carver             MN   Public

            Tree down and power line down blocking one
            lane of Highway 5 near the Arboretum east of
            Victoria. Relayed via Media.

&&

BED

Local storm report, Aug 29, 4:30 PM CDT, 24 minutes before

Preliminary Local Storm Report
National Weather Service Twin Cities/Chanhassen MN
430 PM CDT Thu Aug 29 2024

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0416 PM     Tstm Wnd Dmg     Albertville             45.24N 93.66W
08/29/2024                   Wright             MN   Public

            Light pole downed within Albertville. Report
            relayed via County Dispatch. Time estimated
            from radar.

&&

BED

Local storm report, Aug 29, 4:35 PM CDT, 19 minutes before

Preliminary Local Storm Report
National Weather Service Twin Cities/Chanhassen MN
435 PM CDT Thu Aug 29 2024

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0419 PM     Tstm Wnd Dmg     2 WNW Anoka             45.21N 93.42W
08/29/2024                   Anoka              MN   Public

            Report via X. Multiple large trees uprooted
            near Highway 10 and Cutters Grove. Time
            estimated from radar.

&&

BED

Local storm report, Aug 29, 4:44 PM CDT, 10 minutes before

Preliminary Local Storm Report
National Weather Service Twin Cities/Chanhassen MN
444 PM CDT Thu Aug 29 2024

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0414 PM     Tstm Wnd Dmg     1 ESE Maple Grove       45.10N 93.44W
08/29/2024                   Hennepin           MN   NWS Employee

            Delayed report of two birch trees and
            several tree branches downed in Maple Grove.
            Time estimated from radar.

&&

BED

Local storm report, Aug 29, 4:46 PM CDT, 8 minutes before

Preliminary Local Storm Report
National Weather Service Twin Cities/Chanhassen MN
446 PM CDT Thu Aug 29 2024

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0422 PM     Tstm Wnd Dmg     3 ESE Ramsey            45.24N 93.39W
08/29/2024                   Anoka              MN   Public

            Photo report via X. Multiple large trees
            snapped. Time estimated from radar.

&&

BED

Special weather statement, Aug 29, 4:54 PM CDT, 0 minutes before

Special Weather Statement
National Weather Service Twin Cities/Chanhassen MN
454 PM CDT Thu Aug 29 2024

MNZ077-084-085-292230-
Steele MN-Waseca MN-Rice MN-
454 PM CDT Thu Aug 29 2024

...STRONG THUNDERSTORMS WILL IMPACT STEELE...EASTERN WASECA AND
SOUTHERN RICE COUNTIES THROUGH 530 PM CDT...

At 454 PM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from near Waterville to 5 miles east of Waldorf.
Movement was east at 50 mph.

HAZARD...Wind gusts up to 50 mph.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects.

Locations impacted include...
Owatonna, Faribault, Waseca, Medford, New Richland, Morristown,
Warsaw, Nerstrand, Otisco, Lemond, Clinton Falls, and Merton.

This includes the following highways...
 Interstate 35 between mile markers 32 and 58.
 U.S. Highway 14 between mile markers 153 and 182.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

A Severe Thunderstorm Watch remains in effect until 900 PM CDT for
south central Minnesota.

&&

LAT...LON 4386 9364 4420 9360 4420 9352 4426 9352
      4439 9304 4399 9305
TIME...MOT...LOC 2154Z 252DEG 45KT 4420 9355 4392 9360

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...50 MPH

RMD

The 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, 4:32 PM CDT	Tornado Warning	MPX	Anoka, Chisago, Isanti	28 min
Aug 29, 4:53 PM CDT	Tornado Warning Tornado observed	MPX	Chisago	20 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
Aug 29, 5:19 PM CDT	Severe Thunderstorm Warning	MPX	Barron, Polk	29 min
Aug 29, 5:57 PM CDT	Flash Flood Warning	MPX	Polk	2 hr
Aug 29, 5:57 PM CDT	Tornado Warning	MPX	Pierce, Saint Croix	33 min
Aug 29, 6:21 PM CDT	Tornado Warning Tornado observed	MPX	Dunn, Saint Croix	39 min
Aug 29, 6:49 PM CDT	Tornado Warning	MPX	Chippewa, Dunn	27 min

Nearby

Special Weather Statements in Minnesota, 2024 Every special weather statement 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.