Alert archive / Minnesota / Flash Flood Watches in 2020

Flash Flood Watch 3, NWS Twin Cities, MN

June 29, 202025 counties in Minnesota; 7 counties in Wisconsin

NWS Twin Cities, MN issued this flash flood watch at Jun 29, 2020, 1:31 AM CDT for 25 counties in Minnesota; 7 counties in Wisconsin. It was in force for 10 hr.

The area

The counties it named.

The facts

Issued
Jun 29, 2020, 1:31 AM CDT (06:31 UTC)
Expired
Jun 29, 2020, 12:00 PM CDT
In force
10 hr
Issued by
NWS Twin Cities, MN
Flood severity
None
All 32 counties

Anoka County, MN, Blue Earth County, MN, Brown County, MN, Carver County, MN, Chisago County, MN, Dakota County, MN, Goodhue County, MN, Hennepin County, MN, Isanti County, MN, Kandiyohi County, MN, Le Sueur County, MN, McLeod County, MN, Meeker County, MN, Nicollet County, MN, Ramsey County, MN, Renville County, MN, Rice County, MN, Scott County, MN, Sherburne County, MN, Sibley County, MN, Stearns County, MN, Waseca County, MN, Washington County, MN, Watonwan County, MN, Wright County, MN, Barron County, WI, Chippewa County, WI, Dunn County, WI, Pierce County, WI, Polk County, WI, Rusk County, WI, Saint Croix County, WI

The radar

The Minneapolis radar (KMPX), 13 km from the middle of the area, began a volume at 06:36 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 00:00Z, 6.5 hours before the alert went out and 15 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-pSkew-T log-p diagram, Minneapolis, MN at 00:00Z on 2020-06-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 40 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Minneapolis, MN at 00:00Z on 2020-06-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 146 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
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
40 J/kg
Mixed-layer CIN
-71 J/kg
Mixed-layer LCL
944 m above ground
0-6 km bulk shear
14 kt
0-1 km storm-relative helicity
146 m²/s²
0-3 km storm-relative helicity
130 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

640 
WGUS63 KMPX 290631
FFAMPX

URGENT - IMMEDIATE BROADCAST REQUESTED
Flood Watch
National Weather Service Twin Cities/Chanhassen MN
131 AM CDT Mon Jun 29 2020

...FLASH FLOODING POSSIBLE THROUGH MID MORNING TODAY...

.Training thunderstorms containing torrential downpours will produce 
totals of 2 to 5 inches in areas through mid morning. This may 
result in flash flooding.

MNZ049-051>053-057>063-065>070-075-076-WIZ014>016-023>025-027-291445-
/O.NEW.KMPX.FF.A.0003.200629T0631Z-200629T1500Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Stearns-Sherburne-Isanti-Chisago-Kandiyohi-Meeker-Wright-Hennepin-
Anoka-Ramsey-Washington-Renville-McLeod-Sibley-Carver-Scott-Dakota-
Nicollet-Le Sueur-Polk-Barron-Rusk-St. Croix-Pierce-Dunn-Chippewa-
Including the cities of Le Sueur, Hudson, Chanhassen, Willmar, 
Menomonie, Center City, Chippewa Falls, Elk River, St Cloud, 
Gaylord, Shakopee, Monticello, Victoria, Ladysmith, River Falls, 
Olivia, Chaska, Stillwater, Hutchinson, Litchfield, St Peter, 
Osceola, St Paul, Hastings, Cambridge, Minneapolis, Rice Lake, and 
Blaine
131 AM CDT Mon Jun 29 2020

...FLASH FLOOD WATCH IN EFFECT UNTIL 10 AM CDT THIS MORNING...

The National Weather Service in the Twin Cities has issued a

* Flash Flood Watch for portions of Minnesota and Wisconsin, 
  including the following counties, in Minnesota, Anoka, Carver, 
  Chisago, Dakota, Hennepin, Isanti, Kandiyohi, Le Sueur, McLeod, 
  Meeker, Nicollet, Ramsey, Renville, Scott, Sherburne, Sibley, 
  Stearns, Washington and Wright. In Wisconsin, Barron, Chippewa, 
  Dunn, Pierce, Polk, Rusk and St. Croix.

* Until 10 AM CDT this morning. 

* Rounds of heavy rainfall could produce totals of 2 to 5 inches, 
  leading to the possibility of flash flooding.

* Flash flooding of creeks, streams, urban areas, and low lying 
  areas is possible.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Please report flooding to your local law enforcement agency or the 
National Weather Service in the Twin Cities when you can do so 
safely.

&&

$$

Borghoff
4 follow-up statements
831 
WGUS63 KMPX 290726
FFAMPX

Flood Watch
National Weather Service Twin Cities/Chanhassen MN
226 AM CDT Mon Jun 29 2020

...SIGNIFICANT FLASH FLOODING POSSIBLE WITH SEVERAL INCHES OF RAIN 
OVERNIGHT...

.A stationary band of thunderstorms stretching from just north of 
the Minnesota River in west central Minnesota eastward into west 
central and northwest Wisconsin is producing torrential rainfall. 
This band of thunderstorms will only slowly meander north or south 
through at least the mid morning hours. Totals are approaching 5 
inches in some areas already and hourly rates of 2 to 3 inches are 
occurring. Additional rainfall totals of 3 to 6 inches are likely. 
Some isolated totals could exceed 8 inches. Significant flash 
flooding is possible, especially if these storms develop over urban 
areas.

MNZ049-051>053-057>063-065>070-075-076-WIZ014>016-023>025-027-291500-
/O.CON.KMPX.FF.A.0003.000000T0000Z-200629T1500Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Stearns-Sherburne-Isanti-Chisago-Kandiyohi-Meeker-Wright-Hennepin-
Anoka-Ramsey-Washington-Renville-McLeod-Sibley-Carver-Scott-Dakota-
Nicollet-Le Sueur-Polk-Barron-Rusk-St. Croix-Pierce-Dunn-Chippewa-
Including the cities of Le Sueur, Hudson, Chanhassen, Willmar, 
Menomonie, Center City, Chippewa Falls, Elk River, St Cloud, 
Gaylord, Shakopee, Monticello, Victoria, Ladysmith, River Falls, 
Olivia, Chaska, Stillwater, Hutchinson, Litchfield, St Peter, 
Osceola, St Paul, Hastings, Cambridge, Minneapolis, Rice Lake, and 
Blaine
226 AM CDT Mon Jun 29 2020

...FLASH FLOOD WATCH REMAINS IN EFFECT UNTIL 10 AM CDT THIS 
MORNING...

The Flash Flood Watch continues for

* Portions of Minnesota and Wisconsin, including the following 
  counties, in Minnesota, Anoka, Carver, Chisago, Dakota, Hennepin, 
  Isanti, Kandiyohi, Le Sueur, McLeod, Meeker, Nicollet, Ramsey, 
  Renville, Scott, Sherburne, Sibley, Stearns, Washington and 
  Wright. In Wisconsin, Barron, Chippewa, Dunn, Pierce, Polk, Rusk 
  and St. Croix.

* Until 10 AM CDT this morning. 

* Rounds of heavy rainfall could produce localized totals in excess 
  of 8 inches, leading to a high likelihood of flash flooding.

* Flash flooding of creeks, streams, urban areas, and low lying 
  areas is possible.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Please report flooding to your local law enforcement agency or the 
National Weather Service in the Twin Cities when you can do so 
safely.

&&

$$

Borghoff
125 
WGUS63 KMPX 291147
FFAMPX

Flood Watch
National Weather Service Twin Cities/Chanhassen MN
647 AM CDT Mon Jun 29 2020

...ADDITIONAL STORMS THIS MORNING COULD LEAD TO MORE FLASH 
FLOODING...

.Additional thunderstorms will continue across parts of the region
this morning. Areas that had several inches of rain overnight 
could see more heavy rain this morning. Significant flash flooding
is possible, especially if these storms develop over urban areas.

MNZ049-051>053-057>063-065>070-075-076-WIZ014>016-023>025-027-
291500-
/O.CON.KMPX.FF.A.0003.000000T0000Z-200629T1500Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Stearns-Sherburne-Isanti-Chisago-Kandiyohi-Meeker-Wright-Hennepin-
Anoka-Ramsey-Washington-Renville-McLeod-Sibley-Carver-Scott-
Dakota-Nicollet-Le Sueur-Polk-Barron-Rusk-St. Croix-Pierce-Dunn-
Chippewa-
Including the cities of St Cloud, Elk River, Cambridge, 
Center City, Willmar, Litchfield, Monticello, Minneapolis, 
Blaine, St Paul, Stillwater, Olivia, Hutchinson, Gaylord, 
Chanhassen, Chaska, Victoria, Shakopee, Hastings, St Peter, 
Le Sueur, Osceola, Rice Lake, Ladysmith, Hudson, River Falls, 
Menomonie, and Chippewa Falls
647 AM CDT Mon Jun 29 2020

...FLASH FLOOD WATCH REMAINS IN EFFECT UNTIL 10 AM CDT THIS
MORNING...

The Flash Flood Watch continues for

* Portions of Minnesota and Wisconsin, including the following 
  areas, in Minnesota, Anoka, Carver, Chisago, Dakota, Hennepin, 
  Isanti, Kandiyohi, Le Sueur, McLeod, Meeker, Nicollet, Ramsey, 
  Renville, Scott, Sherburne, Sibley, Stearns, Washington, and 
  Wright. In Wisconsin, Barron, Chippewa, Dunn, Pierce, Polk, 
  Rusk, and St. Croix. 

* Until 10 AM CDT this morning

* Additional rounds of heavy rainfall could lead to a high 
  likelihood of flash flooding. 

* Flash flooding of creeks, streams, urban areas, and low lying 
  areas is possible. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Please report flooding to your local law enforcement agency or
the National Weather Service in the Twin Cities when you can do
so safely.

&&

$$

jrb
955 
WGUS63 KMPX 291341
FFAMPX

URGENT - IMMEDIATE BROADCAST REQUESTED
Flood Watch
National Weather Service Twin Cities/Chanhassen MN
841 AM CDT Mon Jun 29 2020

...EXCESSIVE RAINFALL MOVING SOUTHWARD AND CONTINUING THROUGH
NOON...

.The axis of heavier rainfall has shifted southward across far
southern Minnesota so the Flash Flood Watch has been expanded in
this area until noon. Additional thunderstorms will continue 
across parts of the region this morning, with the rainfall slowly
decreasing in areal coverage and intensity by noon. Significant 
flash flooding is possible in the watch area, especially if these
storms develop over urban areas.

MNZ074-077-078-082>084-291700-
/O.EXB.KMPX.FF.A.0003.000000T0000Z-200629T1700Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Brown-Rice-Goodhue-Watonwan-Blue Earth-Waseca-
Including the cities of New Ulm, Faribault, Red Wing, St James, 
Mankato, and Waseca
841 AM CDT Mon Jun 29 2020

...FLASH FLOOD WATCH IN EFFECT UNTIL NOON CDT TODAY...

The National Weather Service in Twin Cities/Chanhassen has
expanded the

* Flash Flood Watch to include portions of south central 
  Minnesota and southeast Minnesota, including the following 
  areas, in south central Minnesota, Blue Earth, Brown, Rice, 
  Waseca, and Watonwan. In southeast Minnesota, Goodhue. 

* Until noon CDT today

* Additional rounds of heavy rainfall could lead to a high 
  likelihood of flash flooding. 

* Flash flooding of creeks, streams, urban areas, and low lying 
  areas is possible. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Please report flooding to your local law enforcement agency or
the National Weather Service in the Twin Cities when you can do
so safely.

&&

$$

MNZ049-051>053-057>063-065>070-075-076-WIZ014>016-023>025-027-
291700-
/O.EXT.KMPX.FF.A.0003.000000T0000Z-200629T1700Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Stearns-Sherburne-Isanti-Chisago-Kandiyohi-Meeker-Wright-Hennepin-
Anoka-Ramsey-Washington-Renville-McLeod-Sibley-Carver-Scott-
Dakota-Nicollet-Le Sueur-Polk-Barron-Rusk-St. Croix-Pierce-Dunn-
Chippewa-
Including the cities of St Cloud, Elk River, Cambridge, 
Center City, Willmar, Litchfield, Monticello, Minneapolis, 
Blaine, St Paul, Stillwater, Olivia, Hutchinson, Gaylord, 
Chanhassen, Chaska, Victoria, Shakopee, Hastings, St Peter, 
Le Sueur, Osceola, Rice Lake, Ladysmith, Hudson, River Falls, 
Menomonie, and Chippewa Falls
841 AM CDT Mon Jun 29 2020

...FLASH FLOOD WATCH NOW IN EFFECT UNTIL NOON CDT TODAY...

The Flash Flood Watch is now in effect for

* Portions of Minnesota and Wisconsin, including the following 
  areas, in Minnesota, Anoka, Carver, Chisago, Dakota, Hennepin, 
  Isanti, Kandiyohi, Le Sueur, McLeod, Meeker, Nicollet, Ramsey, 
  Renville, Scott, Sherburne, Sibley, Stearns, Washington, and 
  Wright. In Wisconsin, Barron, Chippewa, Dunn, Pierce, Polk, 
  Rusk, and St. Croix. 

* Until noon CDT today

* Additional rounds of heavy rainfall could lead to a high 
  likelihood of flash flooding. 

* Flash flooding of creeks, streams, urban areas, and low lying 
  areas is possible. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Please report flooding to your local law enforcement agency or
the National Weather Service in the Twin Cities when you can do
so safely.

&&

$$
479 
WGUS63 KMPX 291648
FFAMPX

Flood Watch
National Weather Service Twin Cities/Chanhassen MN
1148 AM CDT Mon Jun 29 2020

...HEAVIEST RAINFALL HAS ENDED...

.The Flash Flood Watch will be allowed to expire at noon. The
heaviest rainfall has ended and the threat of flash flooding has
also ended. There will remain occasional light to moderate 
showers and thunderstorms through 2 pm. 

MNZ049-051>053-057>063-065>070-074>078-082>084-WIZ014>016-023>025-
027-291800-
/O.EXP.KMPX.FF.A.0003.000000T0000Z-200629T1700Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Stearns-Sherburne-Isanti-Chisago-Kandiyohi-Meeker-Wright-Hennepin-
Anoka-Ramsey-Washington-Renville-McLeod-Sibley-Carver-Scott-
Dakota-Brown-Nicollet-Le Sueur-Rice-Goodhue-Watonwan-Blue Earth-
Waseca-Polk-Barron-Rusk-St. Croix-Pierce-Dunn-Chippewa-
Including the cities of St Cloud, Elk River, Cambridge, 
Center City, Willmar, Litchfield, Monticello, Minneapolis, 
Blaine, St Paul, Stillwater, Olivia, Hutchinson, Gaylord, 
Chanhassen, Chaska, Victoria, Shakopee, Hastings, New Ulm, 
St Peter, Le Sueur, Faribault, Red Wing, St James, Mankato, 
Waseca, Osceola, Rice Lake, Ladysmith, Hudson, River Falls, 
Menomonie, and Chippewa Falls
1148 AM CDT Mon Jun 29 2020

...FLASH FLOOD WATCH WILL EXPIRE AT NOON CDT TODAY...

The Flash Flood Watch for portions of Minnesota and Wisconsin
will expire at noon CDT today. The heaviest rainfall has ended 
and the threat of flash flooding has also ended. There will remain
occasional light to moderate showers and thunderstorms through 2 
pm. 

$$

What forecasters said that day

The local office's own words before this flash flood watch 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 flash flood watch went out at Jun 28, 11:54 PM CDT, 1 hour 37 minutes earlier.

Area forecast discussion, Jun 28, 11:54 PM CDT, 1 hour 37 minutes before
Area Forecast Discussion
National Weather Service Twin Cities/Chanhassen MN
1154 PM CDT Sun Jun 28 2020

.UPDATE...For 06Z Aviation discussion below

&&

.SHORT TERM...(This evening through Monday night)
Issued at 401 PM CDT Sun Jun 28 2020

MCV moving into the Mankato area will be the focus for
thunderstorms this afternoon that will track up into the Twin
Cities and eventually the Twin Ports region. We're starting to get
hints of deep moist convection initiating, though to this point,
this feature has been fairly stable. However, with over 5000 j/kg
of MUCAPE up into western IA, persistent southerly flow will
continue to push more unstable air northward, so agree with the
HRRR and HopWRFs that we will eventually a cluster of storms
develop that moves north through the Twin Cities later this
afternoon. Again, with the better instability and shear off to the
southwest, these storms look to remain sub-severe.

After this MCV moves through, attention turns to threat for where
storms develop along the warm front. This next round of storms
will tap into the extreme instability down across IA, but there
continues to be little continuity in the models with where this
batch of rain ends up. For example, the HRRR between 12z and 18z
look fairly similar, the only difference is the 12z HRRR had the
evening/overnight storms from south central MN up into the Twin
Cities, while the 18z shifted it all north, with the heavy rain
from the Twin Cities/east central MN into northwest WI. At this
point, still favor a more southern solution like what the 12z
HREF and 15z HopWRF mean have, with the warm front ending up from
about Marshall to the MN/WI/IA border, with the greatest heavy
rain and severe risk through the night centered closer to that
region. Both the 12z and 18z HRRR show the potential for training
of storms along where the warm front sets up, with some areas
receiving 3+ inches of QPF. Fortunately, antecedent soil
conditions are dry, so really think to have much of a flash flood
threat, we're going to need to see heavy rain in the urban core of
the Twin Cities metro. Everywhere else, soils are dry enough to
handle some good rains.

For the severe threat, that again looks better closer to the MN/IA
border, where instability will be greater and shear is increased
by the jet streak currently apparent on satellite imagery over KS
moving up over IA this evening. For the severe threat to
materialize, we probably need the souther solution to work out
(12z HRRR). If we see a more northern solution as we are seeing
with the 18z HRRR and the 18z HopWRF members just rolling in,
we'll likely have a lower severe threat as these areas will be
displaced from the stronger instability and shear.

This activity tonight will likely generate an MCV, that will then
serve as the focus for thunderstorm development Monday afternoon.
There was certainly a trend from the GFS/NAM for the MPX area to
be hot and capped on Monday, but like the idea of the 18z HRRR.
Because of where it develops convection tonight, the HRRR
generates an MCV near the Twin Cities, that by Monday afternoon is
up by Duluth, with storms initiating there then tracking
southeast into western WI. This should be how things play out,
it's just a matter of where that MCV ends up and given uncertainty
with where that will be, have kept PoPs mainly in the 30s north
of I-94. As you get southwest of I-94, you will be encountering
stronger and stronger capping, so have a dry day for Monday by the
time you get to south central, southwest, and west central MN.

With the lower cloud cover and drier conditions expected, this
will translate to hot conditions southwest of I-94, with
afternoon heat indices forecast to be in the mid 90s to lower
100s. Haven't issued any heat headlines yet until we get a better
handle on how clouds and convection will trend Monday afternoon,
but a heat advisory is looking pretty likely for at least the Twin
Cities metro on Monday.

.LONG TERM...(Tuesday through Sunday)
Issued at 401 PM CDT Sun Jun 28 2020

For the long term, Tuesday is looking hot and dry, with the best
forcing for precip out in the Dakotas. Wednesday/Wednesday night
still looks to feature the passage of a weak cold front, but both
the GFS/ECMWF trended drier with it. This makes sense as the main
upper wave forcing this front will be going from the Dakotas into
northern Saskatchewan. So forcing and shear will be weak across
the MPX area with the front, with the severe threat really driven
by the presence of strong instability along the front.

Behind the front we see building heights and a drying trend
for Thursday through Saturday. Stuck with NBM PoPs for Thursday,
though those look overdone. Really it doesn't look like we have
much of precip threat until Sunday, when a weak cold front looks
to drop down from the north. For temperatures, it still looks hot,
with the potential for us to pile on quite a few 90+ degree highs
through the weekend.

&&

.AVIATION...(For the 06Z TAFS through 06Z Monday night)
Issued at 1155 PM CDT Sun Jun 28 2020

Another round of showers and thunderstorms is expected overnight,
with MVFR conditions at most sites into Monday morning.
Improvement to VFR conditions is expected for Monday afternoon,
but additional thunderstorms could redevelop with the sun/daytime
heating. The primary area for redevelopment on Monday afternoon
would be north of the atmospheric cap, more likely affecting
east central MN and west central WI sites (KMSP/KRNH/KEAU). At
this point confidence is low so have included a Prob30 mention.

KMSP...Another round of thunderstorms arrives around the start of
the TAF period, and persists through daybreak. Attendant MVFR
conditions are expected, with a broken ceiling circa 3KFT
lingering through much of the morning.

/OUTLOOK FOR KMSP/
Tue...Mainly VFR. Slight Chc TSRA/MVFR. Wind SE 15G25 kts.
Wed...Mainly VFR. Chc TSRA/MVFR. Wind SE 5-10 kts.
Thu...Mainly VFR. Chc TSRA/MVFR. Wind lgt and vrb.

&&

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

SHORT TERM...MPG
LONG TERM...MPG
AVIATION...LS
Hazardous weather outlook, Jun 29, 12:38 AM CDT, 53 minutes before
Hazardous Weather Outlook
National Weather Service Twin Cities/Chanhassen MN
1238 AM CDT Mon Jun 29 2020

MNZ041>045-047>070-073>078-082>085-091>093-WIZ014>016-023>028-
300545-
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-
1238 AM CDT Mon Jun 29 2020

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

.DAY ONE...Tonight.

Thunderstorms are expected to continue through the overnight
hours. Large hail and damaging winds are the main threats, with
an isolated tornado possible as well. Locally heavy rainfall is
also likely with thunderstorms. A flash flood threat exists
wherever multiple rounds of thunderstorms are able to redevelop
over the same area. The greatest risk for flash flooding exists
from east central Minnesota into far western Wisconsin.

.DAYS TWO THROUGH SEVEN...Monday through Sunday.

Daily chances for thunderstorms exist Monday through Thursday.
Severe thunderstorms appear possible on Wednesday.

Very warm temperatures and humid conditions are expected through
much of the upcoming week. Heat indices of 90 to 100 degrees are
expected on Monday afternoon.

.SPOTTER INFORMATION STATEMENT...

SKYWARN spotter activation may be needed overnight.

In the hours before

Special weather statement, Jun 28, 10:27 PM CDT, 3 hours 4 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE Twin Cities/Chanhassen MN
1027 PM CDT Sun Jun 28 2020

MNC037-123-163-290530-
Dakota-Washington-Ramsey-
1027 PM CDT Sun Jun 28 2020

...URBAN AND SMALL STREAM FLOODING EXPECTED...

Thunderstorms with heavy rain will cause minor flooding in the
following counties...

Dakota...Washington...Ramsey...

* Until 1230 AM CDT.

* At 1025 PM CDT, Doppler radar indicated a line of thunderstorms
  training over the eastern Twin Cities metro. A much as two inches
  of rain has already fallen over these areas, with additional heavy
  rainfall likely leading to localized areas of urban and small
  stream flooding.

* Some locations that will experience flooding include...
  St. Paul, Eagan, Woodbury, Maplewood, Cottage Grove, Inver Grove
  Heights, Oakdale, White Bear Lake, South St. Paul, West St. Paul,
  Stillwater and Hugo.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.

Be especially cautious at night when it is harder to recognize the
dangers of flooding.

Excessive runoff from heavy rainfall will cause flooding of small
creeks and streams, urban areas, highways, streets and underpasses as
well as other drainage areas and low lying spots.

&&

LAT...LON 4509 9278 4506 9280 4503 9276 4497 9277
      4494 9275 4484 9287 4485 9316 4488 9319
      4493 9320 4516 9287

ETA
Special weather statement, Jun 28, 11:15 PM CDT, 2 hours 16 minutes before
Special Weather Statement
National Weather Service Twin Cities/Chanhassen MN
1115 PM CDT Sun Jun 28 2020

MNZ067-075-290500-
Sibley-Nicollet-
1115 PM CDT Sun Jun 28 2020

...AN AREA OF STRONG THUNDERSTORMS WILL AFFECT SOUTHWESTERN SIBLEY
AND CENTRAL NICOLLET COUNTIES...

At 1115 PM CDT, strong thunderstorms were clustered near Lafayette,
or 7 miles northeast of New Ulm, moving north at 20 mph.

Wind gusts up to 50 mph and nickel size hail are possible with this
storm.

Locations impacted include...
New Ulm, Gaylord, Winthrop, Nicollet, Courtland, Lafayette, New
Sweden, Klossner and New Rome.

This includes U.S. Highway 14 between mile markers 104 and 105, and
between mile markers 107 and 119.

Torrential rainfall is also occurring with this storm, and may cause
localized flooding. Do not drive your vehicle through flooded
roadways.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

LAT...LON 4422 9426 4426 9433 4427 9441 4433 9445
      4436 9452 4455 9450 4456 9408 4420 9419
TIME...MOT...LOC 0415Z 186DEG 16KT 4438 9436

ETA
Special weather statement, Jun 29, 12:01 AM CDT, 1 hour 30 minutes before
Special Weather Statement
National Weather Service Twin Cities/Chanhassen MN
1201 AM CDT Mon Jun 29 2020

MNZ066-067-075-290530-
McLeod-Sibley-Nicollet-
1201 AM CDT Mon Jun 29 2020

...AN AREA OF STRONG THUNDERSTORMS WILL AFFECT SIBLEY...SOUTH CENTRAL
MCLEOD AND NORTHEASTERN NICOLLET COUNTIES...

At 1201 AM CDT, strong thunderstorms were clustered over Gaylord, or
19 miles northeast of New Ulm, moving northeast at 15 mph.

Winds in excess of 40 mph and nickel size hail are possible with this
storm.

Locations impacted include...
Gaylord, Arlington, Winthrop, Henderson, Gibbon, Lafayette, New
Sweden, Fernando, Rush River, New Rome and Norseland.

Torrential rainfall is also occurring with this storm, and may cause
localized flooding. Do not drive your vehicle through flooded
roadways.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

LAT...LON 4446 9463 4454 9463 4470 9440 4459 9389
      4455 9390 4455 9391 4453 9390 4435 9415
TIME...MOT...LOC 0501Z 208DEG 12KT 4453 9423

ETA
Local storm report, Jun 29, 12:46 AM CDT, 45 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
1246 AM CDT MON JUN 29 2020

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

1240 AM     HAIL             WINTHROP                44.55N 94.37W
06/29/2020  E0.70 INCH       SIBLEY             MN   FIRE DEPT/RESCUE

&&

LS
Special weather statement, Jun 29, 12:46 AM CDT, 45 minutes before
Special Weather Statement
National Weather Service Twin Cities/Chanhassen MN
1246 AM CDT Mon Jun 29 2020

MNZ065>067-290645-
McLeod-Sibley-Renville-
1246 AM CDT Mon Jun 29 2020

...A STRONG THUNDERSTORM WITH HEAVY RAIN WILL AFFECT WESTERN
SIBLEY...SOUTHWESTERN MCLEOD AND EASTERN RENVILLE COUNTIES...

At 1246 AM CDT, a strong thunderstorm was located 7 miles northeast
of Fairfax, or 23 miles southwest of Hutchinson, moving east at 10
mph.

Heavy rain and winds in excess of 40 mph are possible with this
storm.

Locations impacted include...
Olivia, Gaylord, Winthrop, Hector, Bird Island, Gibbon, Buffalo Lake,
Stewart, Lafayette, New Sweden and Fernando.

This includes U.S. Highway 212 between mile markers 78 and 100.

Torrential rainfall is also occurring with this storm, and may cause
localized flooding. Do not drive your vehicle through flooded
roadways.

LAT...LON 4463 9497 4483 9498 4463 9411 4446 9410
      4445 9443
TIME...MOT...LOC 0546Z 265DEG 11KT 4462 9465

JRB
Local storm report, Jun 29, 12:54 AM CDT, 37 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
1254 AM CDT MON JUN 29 2020

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

1240 AM     HEAVY RAIN       5 NW GLENWOOD CITY      45.10N 92.26W
06/29/2020  M5.43 INCH       ST. CROIX          WI   MESONET

            MESONET STATION DW5828 EMERALD.

0932 PM     HEAVY RAIN       2 S INVER GROVE HEIGHT  44.83N 93.04W
06/28/2020  M2.40 INCH       DAKOTA             MN   PUBLIC

1230 AM     HEAVY RAIN       1 SSW SPRING VALLEY     44.83N 92.25W
06/29/2020  M2.38 INCH       PIERCE             WI   MESONET

            MESONET STATION EW5624 SPRING VALLEY.

1200 AM     HEAVY RAIN       CANNON FALLS            44.51N 92.91W
06/29/2020  M2.34 INCH       GOODHUE            MN   MESONET

            MESONET STATION CNFM5 CANNON FALLS 2S.

1239 AM     HEAVY RAIN       2 ESE ST. PAUL          44.93N 93.05W
06/29/2020  M2.14 INCH       RAMSEY             MN   ASOS

            ASOS STATION KSTP ST. PAUL DWTN AP.

1208 AM     HEAVY RAIN       4 NNE SOMERSET          45.19N 92.65W
06/29/2020  M2.08 INCH       ST. CROIX          WI   MESONET

            MESONET STATION LKRW3 STAR PRAIRIE.

1200 AM     HEAVY RAIN       1 N SPRING VALLEY       44.86N 92.24W
06/29/2020  M2.01 INCH       ST. CROIX          WI   MESONET

            MESONET STATION SVPW3 0.6 N SPRING VALLEY.

&&

The office that day

Everything else NWS Twin Cities, MN issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 28, 7:06 PM CDTTornado WarningMPXGoodhue24 min
Jun 28, 7:14 PM CDTSpecial Weather StatementMPXDakota31 min
Jun 28, 7:25 PM CDTSpecial Weather StatementMPXWashington35 min
Jun 28, 7:46 PM CDTSpecial Weather StatementMPXDakota29 min
Jun 28, 10:27 PM CDTSpecial Weather StatementMPXWashington2 hr
Jun 28, 10:52 PM CDTSevere Thunderstorm WarningMPXBlue Earth, Nicollet23 min
Jun 28, 11:15 PM CDTSpecial Weather StatementMPXNicollet45 min
Jun 28, 11:30 PM CDTSevere Thunderstorm WarningMPXNicollet, Sibley30 min
Jun 29, 12:01 AM CDTSpecial Weather StatementMPXSibley29 min
Jun 29, 12:21 AM CDTTornado WarningMPXSibley39 min
Jun 29, 12:46 AM CDTSpecial Weather StatementMPXRenville, Sibley59 min
Jun 29, 1:19 AM CDTFlash Flood WarningMPXMcLeod, Renville, Sibley3 hr
Jun 29, 1:45 AM CDTSpecial Weather StatementMPXChippewa60 min
Jun 29, 2:42 AM CDTSpecial Weather StatementMPXCarver, Scott48 min
Jun 29, 3:03 AM CDTSpecial Weather StatementMPXDakota, Le Sueur, Rice57 min
Jun 29, 4:27 AM CDTHeat AdvisoryMPXAnoka, Carver, Chippewa, Dakota, Hennepin, Lac qui Parle and 6 more8 hr
Jun 29, 4:29 AM CDTSpecial Weather StatementMPXLe Sueur, Nicollet, Scott, Sibley46 min
Jun 29, 4:33 AM CDTSpecial Weather StatementMPXDakota, Goodhue, Rice, Washington57 min
Jun 29, 5:49 AM CDTSpecial Weather StatementMPXPope, Swift56 min
Jun 29, 6:46 AM CDTSpecial Weather StatementMPXChippewa, Kandiyohi59 min
Jun 29, 7:18 AM CDTSpecial Weather StatementMPXLe Sueur57 min
Jun 29, 7:23 AM CDTFlash Flood WarningMPXBlue Earth, Brown, Le Sueur, Nicollet5 hr
Jun 29, 8:17 AM CDTSpecial Weather StatementMPXWright43 min
Jun 29, 8:33 AM CDTFlash Flood WarningMPXLe Sueur, Rice3 hr
Jun 29, 8:34 AM CDTSpecial Weather StatementMPXLe Sueur, Rice26 min
Jun 29, 9:18 AM CDTSpecial Weather StatementMPXNicollet, Sibley57 min
Jun 29, 11:40 AM CDTAreal Flood WarningMPXLe Sueur, Rice4 hr
Jun 29, 3:57 PM CDTSpecial Weather StatementMPXMille Lacs63 min
Jun 29, 4:27 PM CDTSpecial Weather StatementMPXTodd33 min
Jun 29, 5:02 PM CDTSpecial Weather StatementMPXMorrison, Todd58 min
Jun 29, 6:04 PM CDTSpecial Weather StatementMPXMorrison71 min
Jun 29, 6:42 PM CDTFlash Flood WarningMPXMorrison5 hr
Jun 28, 7:30 PM CDTSpecial Weather StatementMPXPierce30 min
Jun 28, 7:49 PM CDTSpecial Weather StatementMPXPierce41 min
Jun 28, 7:51 PM CDTTornado WarningMPXPierce24 min
Jun 28, 8:31 PM CDTSpecial Weather StatementMPXPierce29 min
Jun 28, 8:43 PM CDTSpecial Weather StatementMPXPierce17 min
Jun 28, 8:59 PM CDTSpecial Weather StatementMPXDunn61 min
Jun 28, 9:50 PM CDTSevere Thunderstorm WarningMPXBarron, Chippewa, Dunn25 min
Jun 28, 10:14 PM CDTSpecial Weather StatementMPXRusk46 min
Jun 29, 2:04 AM CDTFlash Flood WarningMPXBarron, Dunn, Pierce, Saint Croix5 hr
Jun 29, 4:53 AM CDTFlash Flood WarningMPXDunn, Pierce, Saint Croix3 hr
Jun 29, 5:08 AM CDTSpecial Weather StatementMPXChippewa, Pepin, Rusk67 min
Jun 29, 6:48 AM CDTAreal Flood WarningMPXBarron, Dunn, Pierce, Polk, Saint Croix10 hr
Jun 29, 7:40 AM CDTAreal Flood WarningMPXDunn, Pierce, Saint Croix5 hr
Jun 29, 12:49 PM CDTAreal Flood WarningMPXDunn, Pierce, Saint Croix3 hr
Jun 29, 4:58 PM CDTAreal Flood WarningMPXPierce, Saint Croix17 hr

Nearby

Flash Flood Watches in Minnesota, 2020Flash Flood Watches in Wisconsin, 2020Every flash flood watch in 2020

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.