Alert archive / South Dakota / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 174, NWS Aberdeen, SD

August 17, 2019Hand County, South Dakota

NWS Aberdeen, SD issued this severe thunderstorm warning at Aug 17, 2019, 6:56 PM CDT for Hand County, South Dakota. It was in force for 19 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: Aug 17, 2019, 6:56 PM CDT (23:56 UTC)
Expired: Aug 17, 2019, 7:15 PM CDT
In force: 19 min
Issued by: NWS Aberdeen, SD
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Hand County, SD

The radar

The Aberdeen radar (KABR), 111 km from the middle of the area, began a volume at 23:57 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Aug 17, 2:19 PM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Aberdeen, SD (KABR), launched 12:00Z, 11.9 hours before the alert went out and 62 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: 789 J/kg
Mixed-layer CIN: -128 J/kg
Mixed-layer LCL: 1386 m above ground
0-6 km bulk shear: 17 kt
0-1 km storm-relative helicity: 46 m²/s²
0-3 km storm-relative helicity: 62 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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 Aug 17, 6:29 PM CDT, 27 minutes earlier.

Area forecast discussion, Aug 17, 6:29 PM CDT, 27 minutes before

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Hazardous weather outlook, Aug 17, 3:33 AM CDT, 15 hours 23 minutes before

Hazardous Weather Outlook
National Weather Service Aberdeen SD
333 AM CDT Sat Aug 17 2019

MNZ039-046-SDZ003>011-015>023-033>037-045-048-051-180845-
Traverse-Big Stone-Corson-Campbell-McPherson-Brown-Marshall-Roberts-
Walworth-Edmunds-Day-Dewey-Potter-Faulk-Spink-Clark-Codington-Grant-
Hamlin-Deuel-Stanley-Sully-Hughes-Hyde-Hand-Jones-Lyman-Buffalo-
333 AM CDT Sat Aug 17 2019 /233 AM MDT Sat Aug 17 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.

A cold front will sweep through the region this afternoon and evening
bringing strong to severe storms. Large hail, damaging winds, and
even a tornado or two will be possible.

.DAYS TWO THROUGH SEVEN...Sunday through Friday.

Strong to severe storms are possible Monday evening, mainly east of
the Missouri River.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will likely be needed later today. 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.

In the hours before

Local storm report, Aug 17, 4:08 PM CDT, 2 hours 48 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ABERDEEN SD
408 PM CDT SAT AUG 17 2019

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

0350 PM     TSTM WND GST     4 NNE GREY GOOSE        44.56N 100.32W
08/17/2019  E60 MPH          SULLY              SD   PUBLIC

            DIME TO NICKEL SIZE HAIL. NO APPARENT DAMAGE
            NOTICEABLE.

&&

RV

Special weather statement, Aug 17, 4:28 PM CDT, 2 hours 28 minutes before

Special Weather Statement
National Weather Service Aberdeen SD
428 PM CDT Sat Aug 17 2019

SDZ006-172145-
Brown SD-
428 PM CDT Sat Aug 17 2019

...SIGNIFICANT WEATHER ADVISORY FOR SOUTH CENTRAL BROWN COUNTY UNTIL
445 PM CDT...

At 428 PM CDT, Doppler radar was tracking a strong thunderstorm near
Aberdeen, moving southeast at 25 mph.

Wind gusts up to 50 mph will be possible with this storm.

Locations impacted include...
Aberdeen and Bath.

A Severe Thunderstorm Watch remains in effect until 900 PM CDT for
northeastern South Dakota.

LAT...LON 4553 9854 4563 9840 4550 9816 4537 9841
TIME...MOT...LOC 2128Z 315DEG 22KT 4552 9842

Connelly

Local storm report, Aug 17, 5:47 PM CDT, 1 hour 9 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ABERDEEN SD
547 PM CDT SAT AUG 17 2019

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

0515 PM     HAIL             7 SE DRAPER             43.85N 100.43W
08/17/2019  E1.00 INCH       JONES              SD   PUBLIC

&&

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 17, 12:52 AM CDT	Special Weather Statement	ABR	Jones	38 min
Aug 17, 2:25 AM CDT	Special Weather Statement	ABR	Buffalo	35 min
Aug 17, 3:17 PM CDT	Severe Thunderstorm Warning	ABR	Hughes, Stanley, Sully	43 min
Aug 17, 3:42 PM CDT	Severe Thunderstorm Warning	ABR	Sully	17 min
Aug 17, 3:48 PM CDT	Severe Thunderstorm Warning	ABR	Hughes, Sully	29 min
Aug 17, 3:49 PM CDT	Severe Thunderstorm Warning	ABR	Brown, Edmunds, McPherson	41 min
Aug 17, 4:06 PM CDT	Severe Thunderstorm Warning	ABR	Faulk, Hand, Hyde	19 min
Aug 17, 4:28 PM CDT	Special Weather Statement	ABR	Brown	17 min
Aug 17, 4:54 PM CDT	Severe Thunderstorm Warning	ABR	Brown	22 min
Aug 17, 5:13 PM CDT	Severe Thunderstorm Warning	ABR	Hughes, Jones, Lyman, Stanley	47 min
Aug 17, 5:24 PM CDT	Severe Thunderstorm Warning	ABR	Hand, Hyde	36 min
Aug 17, 5:29 PM CDT	Severe Thunderstorm Warning	ABR	Lyman	46 min
Aug 17, 5:45 PM CDT	Severe Thunderstorm Warning	ABR	Jones, Lyman	30 min
Aug 17, 5:48 PM CDT	Severe Thunderstorm Warning	ABR	Roberts	42 min
Aug 17, 5:52 PM CDT	Tornado Warning	ABR	Hand, Hyde	23 min
Aug 17, 5:57 PM CDT	Severe Thunderstorm Warning	ABR	Lyman	31 min
Aug 17, 6:09 PM CDT	Severe Thunderstorm Warning	ABR	Hand	15 min
Aug 17, 6:41 PM CDT	Severe Thunderstorm Warning	ABR	Grant, Roberts	34 min
Aug 17, 9:42 AM CDT	River Flood Warning	ABR	Traverse	5 days

Nearby

Severe Thunderstorm Warnings in South Dakota, 2019 Every 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.