Alert archive / Minnesota / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 94, NWS Aberdeen, SD

July 19, 2019Big Stone County, Traverse County, Minnesota

NWS Aberdeen, SD issued this severe thunderstorm warning at Jul 19, 2019, 11:17 AM CDT for Big Stone County, Traverse County, Minnesota. It was in force for 27 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Jul 19, 2019, 11:17 AM CDT (16:17 UTC)
Expired
Jul 19, 2019, 11:44 AM CDT
In force
27 min
Issued by
NWS Aberdeen, SD
Area
Storm-based polygon
Hail
2.0 in
Wind
60.0 mph

Counties Big Stone County, MN, Traverse County, MN

The radar

The Aberdeen radar (KABR), 154 km from the middle of the area, began a volume at 16:19 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

Aberdeen, SD (KABR), launched 12:00Z, 4.3 hours before the alert went out and 172 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, Aberdeen, SD at 12:00Z on 2019-07-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1287 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, Aberdeen, SD at 12:00Z on 2019-07-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 59 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
1287 J/kg
Mixed-layer CIN
-248 J/kg
Mixed-layer LCL
1445 m above ground
0-6 km bulk shear
62 kt
0-1 km storm-relative helicity
59 m²/s²
0-3 km storm-relative helicity
436 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.9

Open this sounding in Storm Lab

What forecasters said that day

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

NWS Aberdeen, SD wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 19, 10:59 AM CDT, 18 minutes earlier.

Area forecast discussion, Jul 19, 10:59 AM CDT, 18 minutes before
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Hazardous weather outlook, Jul 19, 5:37 AM CDT, 5 hours 40 minutes before
Hazardous Weather Outlook
National Weather Service Aberdeen SD
537 AM CDT Fri Jul 19 2019

MNZ039-SDZ003>011-015>017-033>036-045-201045-
Traverse-Corson-Campbell-McPherson-Brown-Marshall-Roberts-Walworth-
Edmunds-Day-Dewey-Potter-Faulk-Stanley-Sully-Hughes-Hyde-Jones-
537 AM CDT Fri Jul 19 2019 /437 AM MDT Fri Jul 19 2019/

This Hazardous Weather Outlook is for west central Minnesota,
central South Dakota, north central South Dakota and northeast
South Dakota.

.DAY ONE...Today and tonight.

Strong to severe storms are possible early this morning across
northern South Dakota. Otherwise, another round of strong to severe
storms are possible this afternoon across northeast South Dakota and
west central Minnesota, then again for the overnight hours. The
bigger threat for large hail and strong winds will be this afternoon
over far northeast South Dakota and west central Minnesota, with a
lesser severe storm threat overnight. An isolated tornado cannot be
ruled out over far northeast South Dakota and west central Minnesota
late this afternoon.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be requested. Weather spotters are encouraged
to submit reports to the National Weather Service in Aberdeen. The
public can submit reports on our web page, Facebook page, or our
Twitter feed.

MNZ046-SDZ018>023-037-201045-
Big Stone-Spink-Clark-Codington-Grant-Hamlin-Deuel-Hand-
537 AM CDT Fri Jul 19 2019

This Hazardous Weather Outlook is for west central Minnesota,
central South Dakota and northeast South Dakota.

.DAY ONE...Today and tonight.

Strong to severe storms are possible this afternoon across far northeast
South Dakota and west central Minnesota. Large hail and strong winds
are the main threats, although an isolated tornado cannot be ruled
out.

The heat index will top out around 100 degrees today. A Heat Advisory
is in effect.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be requested. Weather spotters are encouraged
to submit reports to the National Weather Service in Aberdeen. The
public can submit reports on our web page, Facebook page, or our
Twitter feed.

SDZ048-051-201045-
Lyman-Buffalo-
537 AM CDT Fri Jul 19 2019

This Hazardous Weather Outlook is for central South Dakota.

.DAY ONE...Today and tonight.

The heat index will range from 100 to 105 degrees across south
central South Dakota today. A Heat Advisory is in effect.

Scattered thunderstorms are expected across the region tonight, a few
may be strong with hail and gusty winds.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

No hazardous weather is expected at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

TMT

In the hours before

Local storm report, Jul 19, 10:02 AM CDT, 1 hour 15 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ABERDEEN SD
1002 AM CDT FRI JUL 19 2019

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

0848 AM     TSTM WND GST     3 ESE ABERDEEN          45.45N 98.41W
07/19/2019  M75 MPH          BROWN              SD   ASOS

&&

RL
Special weather statement, Jul 19, 10:48 AM CDT, 29 minutes before
Special Weather Statement
National Weather Service Aberdeen SD
1048 AM CDT Fri Jul 19 2019

MNZ039-046-SDZ008-191615-
Traverse MN-Big Stone MN-Roberts SD-
1048 AM CDT Fri Jul 19 2019

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN TRAVERSE...
NORTHWESTERN BIG STONE AND CENTRAL ROBERTS COUNTIES UNTIL 1115 AM
CDT...

At 1048 AM CDT, Doppler radar was tracking a strong thunderstorm over
Beardsley, or 15 miles east of Sisseton, moving east at 30 mph.

Nickel size hail and winds in excess of 40 mph will be possible with
this storm.

Locations impacted include...
Browns Valley, Graceville, Beardsley, Barry, Siloah Country Church,
Lake Traverse and Big Stone Lake.

LAT...LON 4551 9690 4562 9693 4573 9646 4552 9641
TIME...MOT...LOC 1548Z 257DEG 27KT 4559 9675

Lueck
Local storm report, Jul 19, 10:53 AM CDT, 24 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ABERDEEN SD
1053 AM CDT FRI JUL 19 2019

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

0811 AM     TSTM WND DMG     6 SSE CRAVENS CORNER    45.37N 98.86W
07/19/2019                   EDMUNDS            SD   COCORAHS

            STRONG WIND AT THE END OF THE STORM BLEW
            OVER A TREE. TIME ESTIMATED.

&&

MC
Local storm report, Jul 19, 10:55 AM CDT, 22 minutes before
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Local storm report, Jul 19, 10:58 AM CDT, 19 minutes before
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Local storm report, Jul 19, 11:04 AM CDT, 13 minutes before
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The office that day

Everything else NWS Aberdeen, SD issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 19, 3:41 AM CDTSevere Thunderstorm WarningABRCorson49 min
Jul 19, 3:54 AM CDTHeat AdvisoryABRBuffalo, Clark, Codington, Deuel, Grant, Hamlin and 3 more16 hr
Jul 19, 4:29 AM CDTSevere Thunderstorm WarningABRCorson46 min
Jul 19, 5:16 AM CDTSevere Thunderstorm WarningABRCorson, Dewey44 min
Jul 19, 5:36 AM CDTSevere Thunderstorm WarningABRDewey27 min
Jul 19, 7:05 AM CDTSevere Thunderstorm WarningABREdmunds, Faulk, Potter, Walworth40 min
Jul 19, 7:39 AM CDTSevere Thunderstorm WarningABRBrown, Edmunds, Faulk, McPherson, Spink51 min
Jul 19, 8:28 AM CDTSpecial Weather StatementABRBrown32 min
Jul 19, 8:48 AM CDTSevere Thunderstorm WarningABRBrown, Day, Marshall, Spink42 min
Jul 19, 9:24 AM CDTSevere Thunderstorm WarningABRBrown, Day, Marshall, Roberts36 min
Jul 19, 10:09 AM CDTSevere Thunderstorm WarningABRDay, Roberts24 min
Jul 19, 10:48 AM CDTSpecial Weather StatementABRRoberts27 min
Jul 19, 10:54 AM CDTSevere Thunderstorm WarningABRRoberts36 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 2019Every severe thunderstorm warning in 2019

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.