Alert archive / South Dakota / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 15, NWS Aberdeen, SD

May 17, 2018McPherson County, South Dakota

NWS Aberdeen, SD issued this severe thunderstorm warning at May 17, 2018, 4:12 PM CDT for McPherson County, South Dakota. It was in force for 35 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: May 17, 2018, 4:12 PM CDT (21:12 UTC)
Expired: May 17, 2018, 4:47 PM CDT
In force: 35 min
Issued by: NWS Aberdeen, SD
Area: Storm-based polygon
Hail: 1.5 in
Wind: 60.0 mph

County McPherson County, SD

The radar

The Aberdeen radar (KABR), 72 km from the middle of the area, began a volume at 21:13 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
May 17, 4:03 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

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 May 17, 3:55 PM CDT, 17 minutes earlier.

Area forecast discussion, May 17, 3:55 PM CDT, 17 minutes before

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Hazardous weather outlook, May 17, 3:28 AM CDT, 12 hours 44 minutes before

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In the hours before

Special weather statement, May 17, 11:02 AM CDT, 5 hours 10 minutes before

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Special weather statement, May 17, 1:53 PM CDT, 2 hours 19 minutes before

Special Weather Statement
National Weather Service Aberdeen SD
153 PM CDT THU MAY 17 2018

SDZ005-171945-
McPherson SD-
153 PM CDT THU MAY 17 2018

...SIGNIFICANT WEATHER ADVISORY FOR NORTHERN MCPHERSON COUNTY UNTIL
245 PM CDT...

At 153 PM CDT, Doppler radar was tracking a strong thunderstorm near
Long Lake, or 15 miles south of Ashley, moving northeast at 25 mph.

Nickel size hail and wind gusts up to 50 mph will be possible with
this storm.

Locations impacted include...
Long Lake and New Town Corner.

LAT...LON 4576 9890 4570 9950 4583 9954 4594 9931
      4594 9895
TIME...MOT...LOC 1853Z 235DEG 24KT 4582 9928

SD

Local storm report, May 17, 4:04 PM CDT, 8 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ABERDEEN SD
404 PM CDT THU MAY 17 2018

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

0403 PM     HAIL             EUREKA                  45.77N 99.62W
05/17/2018  E1.75 INCH       MCPHERSON          SD   TRAINED SPOTTER

&&

NWS

The office that day

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

Issued	Product	Office	Counties	Lasted
May 17, 3:16 AM CDT	Special Weather Statement	ABR	Buffalo	59 min
May 17, 11:02 AM CDT	Special Weather Statement	ABR	McPherson	43 min
May 17, 1:53 PM CDT	Special Weather Statement	ABR	McPherson	52 min
May 17, 2:01 PM CDT	Severe Thunderstorm Warning	ABR	McPherson	44 min
May 17, 2:45 PM CDT	Severe Thunderstorm Warning	ABR	McPherson	45 min
May 17, 3:29 PM CDT	Severe Thunderstorm Warning	ABR	McPherson	28 min
May 17, 3:52 PM CDT	Flash Flood Warning	ABR	McPherson	4 hr
May 17, 4:00 PM CDT	Severe Thunderstorm Warning	ABR	McPherson	45 min
May 17, 4:29 PM CDT	Severe Thunderstorm Warning	ABR	Campbell, McPherson	46 min
May 17, 5:14 PM CDT	Severe Thunderstorm Warning	ABR	Campbell, Edmunds, McPherson, Walworth	46 min
May 17, 5:29 PM CDT	Flash Flood Warning	ABR	McPherson	4 hr
May 17, 5:34 PM CDT	Severe Thunderstorm Warning	ABR	Corson	26 min
May 17, 5:57 PM CDT	Severe Thunderstorm Warning	ABR	Walworth	48 min
May 17, 6:15 PM CDT	Special Weather Statement	ABR	Campbell	45 min
May 17, 6:24 PM CDT	Severe Thunderstorm Warning	ABR	Corson, Dewey	51 min
May 17, 6:32 PM CDT	Severe Thunderstorm Warning	ABR	Campbell, Corson, Dewey, Walworth	43 min

Nearby

Severe Thunderstorm Warnings in South Dakota, 2018 Every severe thunderstorm warning 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; radar from the NEXRAD Level II archive.