Alert archive / Minnesota / Special Weather Statements in 2018

Special Weather Statement, NWS Twin Cities, MN

June 17, 2018Scott County, Minnesota

NWS Twin Cities, MN issued this special weather statement at Jun 17, 2018, 6:59 PM CDT for Scott County, Minnesota. It was in force for 31 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
Jun 17, 2018, 6:59 PM CDT (23:59 UTC)
Expired
Jun 17, 2018, 7:30 PM CDT
In force
31 min
Issued by
NWS Twin Cities, MN

County Scott County, MN

The radar

The Minneapolis radar (KMPX), 25 km from the middle of the area, began a volume at 00:06 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, 12.0 hours before the alert went out and 24 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 2018-06-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1067 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 2018-06-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 181 square meters per square second.193958Sfc1 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
1067 J/kg
Mixed-layer CIN
-128 J/kg
Mixed-layer LCL
1089 m above ground
0-6 km bulk shear
44 kt
0-1 km storm-relative helicity
181 m²/s²
0-3 km storm-relative helicity
175 m²/s²
Significant tornado parameter
0.3
Supercell composite
1.4

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 Jun 17, 4:25 PM CDT, 2 hours 34 minutes earlier.

Area forecast discussion, Jun 17, 4:25 PM CDT, 2 hours 34 minutes before
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Hazardous weather outlook, Jun 17, 3:55 AM CDT, 15 hours 4 minutes before
Hazardous Weather Outlook...CORRECTED
National Weather Service Twin Cities/Chanhassen MN
355 AM CDT Sun Jun 17 2018

MNZ060>063-068>070-180900-
Hennepin-Anoka-Ramsey-Washington-Carver-Scott-Dakota-
355 AM CDT Sun Jun 17 2018

This Hazardous Weather Outlook is for portions of east central
Minnesota.

.DAY ONE...Today and Tonight

An Excessive Heat Warning is in effect. Heat indices of 98 to 103
are expected this afternoon.

Thunderstorms are expected to develop late this afternoon and
evening across the coverage area. There is a Slight Risk of
severe thunderstorms with the main hazards being large hail and
damaging winds. In addition, some storms may contain heavy rain
which may lead to flash flooding.

.DAYS TWO THROUGH SEVEN...Monday through Saturday

Thunderstorms are possible Monday into Tuesday and again late
Thursday through Saturday. Severe weather is not expected at this
time.

.SPOTTER INFORMATION STATEMENT...

SKYWARN spotter activation may be needed this afternoon and
evening.

MNZ051-059-066-067-074>078-082>085-091>093-WIZ016-023>028-180900-
Sherburne-Wright-McLeod-Sibley-Brown-Nicollet-Le Sueur-Rice-
Goodhue-Watonwan-Blue Earth-Waseca-Steele-Martin-Faribault-
Freeborn-Rusk-St. Croix-Pierce-Dunn-Pepin-Chippewa-Eau Claire-
355 AM CDT Sun Jun 17 2018

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

.DAY ONE...Today and Tonight

A Heat Advisory is in effect. Heat indices of 95 to 100 are
expected this afternoon.

Thunderstorms are expected to develop late this afternoon and
evening across the coverage area. There is a Slight Risk of
severe thunderstorms with the main hazards being large hail and
damaging winds. In addition, some storms may contain heavy rain
which may lead to flash flooding.

.DAYS TWO THROUGH SEVEN...Monday through Saturday

Thunderstorms are possible Monday into Tuesday and again late
Thursday through Saturday. Severe weather is not expected at this
time.

.SPOTTER INFORMATION STATEMENT...

SKYWARN spotter activation may be needed this afternoon and
evening.

MNZ041>045-047>050-052>058-064-065-073-WIZ014-015-180900-
Douglas-Todd-Morrison-Mille Lacs-Kanabec-Stevens-Pope-Stearns-
Benton-Isanti-Chisago-Lac Qui Parle-Swift-Chippewa-Kandiyohi-
Meeker-Yellow Medicine-Renville-Redwood-Polk-Barron-
355 AM CDT Sun Jun 17 2018

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

.DAY ONE...Today and Tonight

Thunderstorms are expected to develop late this afternoon and
evening across the coverage area. There is a Slight Risk of severe
thunderstorms for portions of western Wisconsin through central
Minnesota, with a Marginal Risk of severe thunderstorms for
portions of west central Minnesota. The main hazards are large
hail and damaging winds. In addition, some storms may contain
heavy rain which may lead to flash flooding.

.DAYS TWO THROUGH SEVEN...Monday through Saturday

Thunderstorms are possible Monday into Tuesday and again late
Thursday through Saturday. Severe weather is not expected at this
time.

.SPOTTER INFORMATION STATEMENT...

SKYWARN spotter activation may be needed this afternoon and
evening.

In the hours before

Local storm report, Jun 17, 4:11 PM CDT, 2 hours 48 minutes before
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Local storm report, Jun 17, 4:14 PM CDT, 2 hours 45 minutes before
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Local storm report, Jun 17, 5:03 PM CDT, 1 hour 56 minutes before
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Local storm report, Jun 17, 6:18 PM CDT, 41 minutes before
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Local storm report, Jun 17, 6:43 PM CDT, 16 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
643 PM CDT SUN JUN 17 2018

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

0620 PM     TSTM WND DMG     3 E CHETEK              45.31N 91.58W
06/17/2018                   BARRON             WI   LAW ENFORCEMENT

            FEW TREES AND POWER LINES DOWN.

&&
Special weather statement, Jun 17, 6:59 PM CDT, 0 minutes before
Special Weather Statement
National Weather Service Twin Cities/Chanhassen MN
659 PM CDT SUN JUN 17 2018

MNZ068-069-180030-
Carver-Scott-
659 PM CDT SUN JUN 17 2018

...A STRONG THUNDERSTORM WILL AFFECT SCOTT AND SOUTHEASTERN CARVER
COUNTIES...

At 658 PM CDT, a strong thunderstorm was located over Mn Valley State
Rec Area, or 30 miles northwest of Northfield, moving northeast at 20
mph.

Wind gusts up to 50 mph are possible with this storm.

Locations impacted include...
Shakopee, Chaska, Belle Plaine, Jordan, Carver, Mn Valley State Rec
Area, Marystown and St Benedict.

To report severe weather, contact your nearest law enforcement
agency. They can relay your report to the National Weather Service
office in The Twin Cities.

LAT...LON 4462 9381 4463 9381 4464 9377 4467 9377
      4468 9382 4482 9364 4465 9341 4455 9374
TIME...MOT...LOC 2358Z 230DEG 18KT 4465 9371

BORGHOFF

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 16, 7:16 PM CDTSpecial Weather StatementMPXLac qui Parle44 min
Jun 16, 8:48 PM CDTSpecial Weather StatementMPXChippewa, Kandiyohi, Pope27 min
Jun 16, 9:23 PM CDTSpecial Weather StatementMPXStearns37 min
Jun 16, 10:02 PM CDTSpecial Weather StatementMPXDouglas58 min
Jun 16, 10:12 PM CDTSevere Thunderstorm WarningMPXPope, Stearns33 min
Jun 16, 10:29 PM CDTSpecial Weather StatementMPXStevens31 min
Jun 16, 10:54 PM CDTSpecial Weather StatementMPXTodd36 min
Jun 16, 11:16 PM CDTSpecial Weather StatementMPXPope, Todd29 min
Jun 16, 11:37 PM CDTSevere Thunderstorm WarningMPXMorrison, Todd23 min
Jun 17, 12:22 PM CDTSevere Thunderstorm WarningMPXMorrison, Todd38 min
Jun 17, 1:37 PM CDTSpecial Weather StatementMPXMille Lacs8 min
Jun 17, 1:47 PM CDTSpecial Weather StatementMPXMille Lacs43 min
Jun 17, 2:25 PM CDTTornado WarningMPXKanabec35 min
Jun 17, 2:44 PM CDTFlash Flood WatchMPXAnoka, Chisago, Dakota, Goodhue, Hennepin, Isanti and 6 more16 hr
Jun 17, 4:09 PM CDTSevere Thunderstorm WarningMPXChippewa, Eau Claire24 min
Jun 17, 5:13 PM CDTSevere Thunderstorm WarningMPXChippewa47 min
Jun 17, 5:32 PM CDTSevere Thunderstorm WarningMPXBarron, Polk43 min
Jun 17, 6:16 PM CDTSevere Thunderstorm WarningMPXBarron, Chippewa, Dunn, Rusk44 min

Nearby

Special Weather Statements in Minnesota, 2018Every special weather statement in 2018

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.