Alert archive / Minnesota / Special Weather Statements in 2020

Special Weather Statement, NWS Twin Cities, MN

July 21, 2020Faribault County, Minnesota

NWS Twin Cities, MN issued this special weather statement at Jul 21, 2020, 2:38 PM CDT for Faribault County, Minnesota. It was in force for 22 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
Jul 21, 2020, 2:38 PM CDT (19:38 UTC)
Expired
Jul 21, 2020, 3:00 PM CDT
In force
22 min
Issued by
NWS Twin Cities, MN

County Faribault County, MN

The radar

The Minneapolis radar (KMPX), 144 km from the middle of the area, began a volume at 19:39 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, 7.6 hours before the alert went out and 144 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 12:00Z on 2020-07-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 148 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Minneapolis, MN at 12:00Z on 2020-07-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 159 square meters per square second.19395878Sfc1 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
148 J/kg
Mixed-layer CIN
-84 J/kg
Mixed-layer LCL
1094 m above ground
0-6 km bulk shear
52 kt
0-1 km storm-relative helicity
159 m²/s²
0-3 km storm-relative helicity
214 m²/s²
Significant tornado parameter
0.1
Supercell composite
1.7

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 Jul 21, 11:54 AM CDT, 2 hours 44 minutes earlier.

Area forecast discussion, Jul 21, 11:54 AM CDT, 2 hours 44 minutes before
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</head>
<body>
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    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
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Hazardous weather outlook, Jul 21, 10:37 AM CDT, 4 hours 1 minute before
Hazardous Weather Outlook
National Weather Service Twin Cities/Chanhassen MN
1037 AM CDT Tue Jul 21 2020

MNZ041>045-049>053-058>063-066>070-075>078-084-085-093-WIZ014>016-
023>028-221545-
Douglas-Todd-Morrison-Mille Lacs-Kanabec-Stearns-Benton-Sherburne-
Isanti-Chisago-Meeker-Wright-Hennepin-Anoka-Ramsey-Washington-
McLeod-Sibley-Carver-Scott-Dakota-Nicollet-Le Sueur-Rice-Goodhue-
Waseca-Steele-Freeborn-Polk-Barron-Rusk-St. Croix-Pierce-Dunn-
Pepin-Chippewa-Eau Claire-
1037 AM CDT Tue Jul 21 2020

This Hazardous Weather Outlook is for portions of central
Minnesota...east central Minnesota...south central Minnesota...
southeast Minnesota...west central Minnesota...northwest
Wisconsin and west central Wisconsin.

.DAY ONE...Today and Tonight.

Showers and thunderstorms are expected to redevelop this
afternoon. The strength of these thunderstorms will depend largely
on the extent of clearing and attendant heating that occurs in
the wake of the morning showers and thunderstorms. Given today's
atmospheric setup, funnel clouds appear possible this afternoon,
primarily north of Interstate 94. Funnel clouds that develop in
this type of scenario rarely touch down as tornadoes, but
certainly could if enough heating from the sun is realized. In
addition for the potential of a few short-lived, weak tornadoes,
severe storms will be possible, generally along and east of the
Interstate 35 corridor. Hail and damaging winds could occur with
these storms. Heavy rainfall will also be possible with storms
through this evening.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

There are occasional chances for thunderstorms from Thursday
night through Monday. The threat for severe weather any of these
days is low at this time.

Heat and humidity will return by this weekend, with afternoon
heat indices near or exceeding 100 degrees possible Friday
through
Sunday.

.SPOTTER INFORMATION STATEMENT...

SKYWARN spotter activation may be needed this afternoon.

MNZ047-048-054>057-064-065-073-074-082-083-091-092-221545-
Stevens-Pope-Lac Qui Parle-Swift-Chippewa-Kandiyohi-
Yellow Medicine-Renville-Redwood-Brown-Watonwan-Blue Earth-Martin-
Faribault-
1037 AM CDT Tue Jul 21 2020

This Hazardous Weather Outlook is for portions of central
Minnesota...south central Minnesota...southwest Minnesota and
west central Minnesota.

.DAY ONE...Today and Tonight.

Isolated thunderstorms are possible this afternoon. Severe weather
is not expected at this time.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

There are occasional chances for thunderstorms from Thursday
night
through Monday. The threat for severe weather any of these days
is low at this time.

Heat and humidity will return by this weekend, with afternoon
heat indices near or exceeding 100 degrees possible Friday
through
Sunday.

.SPOTTER INFORMATION STATEMENT...

SKYWARN spotter activation will not be needed.

In the hours before

Special weather statement, Jul 21, 11:28 AM CDT, 3 hours 10 minutes before
Special Weather Statement
National Weather Service Twin Cities/Chanhassen MN
1128 AM CDT Tue Jul 21 2020

MNZ042>045-049>053-211830-
Todd-Morrison-Mille Lacs-Kanabec-Stearns-Benton-Sherburne-Isanti-
Chisago-
Including the cities of Long Prairie, Little Falls, Princeton,
Mora, St Cloud, Sauk Rapids, Elk River, Cambridge,
and Center City
1128 AM CDT Tue Jul 21 2020

...FUNNEL CLOUDS POSSIBLE ACROSS CENTRAL MINNESOTA THIS
AFTERNOON...

Atmospheric conditions are favorable for the development of funnel
clouds this afternoon across central Minnesota.

These types of funnel clouds are usually short lived and weak,
however, they can and occasionally do touch the ground and cause
minor damage. Because of this possibility, if you see one of
these funnel clouds approaching the ground, take cover
immediately.
Special weather statement, Jul 21, 11:36 AM CDT, 3 hours 2 minutes before
Special Weather Statement
National Weather Service Twin Cities/Chanhassen MN
1136 AM CDT Tue Jul 21 2020

MNZ042>045-049>053-212100-
Todd-Morrison-Mille Lacs-Kanabec-Stearns-Benton-Sherburne-Isanti-
Chisago-
Including the cities of Long Prairie, Little Falls, Princeton,
Mora, St Cloud, Sauk Rapids, Elk River, Cambridge,
and Center City
1136 AM CDT Tue Jul 21 2020

...FUNNEL CLOUDS POSSIBLE ACROSS CENTRAL MINNESOTA THIS
AFTERNOON...

Atmospheric conditions are favorable for the development of funnel
clouds this afternoon across central Minnesota.

These types of funnel clouds are usually short lived and weak,
however, they can and occasionally do touch the ground and cause
minor damage. Because of this possibility, if you see one of
these funnel clouds approaching the ground, take cover
immediately.
Special weather statement, Jul 21, 2:31 PM CDT, 7 minutes before
Special Weather Statement
National Weather Service Twin Cities/Chanhassen MN
231 PM CDT Tue Jul 21 2020

MNZ052-053-212000-
Isanti-Chisago-
231 PM CDT Tue Jul 21 2020

...THUNDERSTORMS WITH THE POTENTIAL FOR FUNNEL CLOUDS WILL AFFECT
CENTRAL CHISAGO AND SOUTHEASTERN ISANTI COUNTIES...

At 230 PM CDT, thunderstorms were located near North Branch, or near
Cambridge, moving east at 20 mph.

Locations impacted include...
North Branch, Spring Lake, Weber, Branch and Wild River State Park.

This includes Interstate 35 between mile markers 144 and 153.

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

Funnel clouds from this thunderstorm could briefly touch down as
weak tornadoes. People in the effected area should remain inside a
sturdy structure until the shower/thunderstorm passes.

LAT...LON 4561 9289 4545 9282 4546 9318 4556 9319
TIME...MOT...LOC 1930Z 257DEG 18KT 4552 9310

Dye
Special weather statement, Jul 21, 2:38 PM CDT, 0 minutes before
Special Weather Statement
National Weather Service Twin Cities/Chanhassen MN
238 PM CDT Tue Jul 21 2020

MNZ092-212000-
Faribault-
238 PM CDT Tue Jul 21 2020

...THUNDERSTORMS WITH THE POTENTIAL FOR FUNNEL CLOUDS WILL AFFECT
SOUTHERN FARIBAULT COUNTY...

At 237 PM CDT, thunderstorms were located near Elmore, or 23 miles
east of Fairmont, moving east at 25 mph.

Locations impacted include...
Elmore, Bricelyn, Frost, Kiester and Walters.

This includes the following highways...
 Interstate 90 between mile markers 129 and 139.
 U.S. Highway 169 between mile markers 1 and 8.

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

Funnel clouds from this thunderstorm could briefly touch down as
weak tornadoes. People in the effected area should remain inside a
sturdy structure until the thunderstorm passes.

LAT...LON 4360 9415 4370 9374 4355 9364 4350 9365
      4350 9410
TIME...MOT...LOC 1937Z 249DEG 21KT 4355 9402

Dye

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 21, 4:13 AM CDTSpecial Weather StatementMPXStearns62 min
Jul 21, 2:31 PM CDTSpecial Weather StatementMPXChisago29 min
Jul 21, 2:59 PM CDTSpecial Weather StatementMPXChisago31 min
Jul 21, 3:59 PM CDTSpecial Weather StatementMPXPolk31 min
Jul 21, 4:31 PM CDTSpecial Weather StatementMPXPolk44 min
Jul 21, 5:15 PM CDTSpecial Weather StatementMPXPolk60 min
Jul 21, 5:39 PM CDTSpecial Weather StatementMPXBarron51 min
Jul 21, 5:39 PM CDTTornado WarningMPXBarron36 min
Jul 21, 5:42 PM CDTTornado WarningMPXBarron, Dunn33 min
Jul 21, 6:14 PM CDTTornado WarningMPXBarron3 min
Jul 21, 6:15 PM CDTTornado WarningMPXDunn60 min
Jul 21, 6:15 PM CDTTornado WarningMPXBarron45 min
Jul 21, 6:23 PM CDTTornado WarningMPXBarron52 min

Nearby

Special Weather Statements in Minnesota, 2020Every special weather statement 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.