Alert archive / South Dakota / Tornado Warnings in 2019

Tornado Warning 22, NWS Rapid City, SD

July 17, 2019Todd County, South Dakota

NWS Rapid City, SD issued this tornado warning at Jul 17, 2019, 2:51 AM CDT for Todd County, South Dakota. It was in force for 24 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 17, 2019, 2:51 AM CDT (07:51 UTC)
Expired: Jul 17, 2019, 3:15 AM CDT
In force: 24 min
Issued by: NWS Rapid City, SD
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.75 in

County Todd County, SD

The radar

The North Platte radar (KLNX), 138 km from the middle of the area, began a volume at 07:51 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

Rapid City, SD (KUNR), launched 00:00Z, 7.9 hours before the alert went out and 199 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: 2775 J/kg
Mixed-layer CIN: -69 J/kg
Mixed-layer LCL: 1389 m above ground
0-6 km bulk shear: 51 kt
0-1 km storm-relative helicity: 35 m²/s²
0-3 km storm-relative helicity: 77 m²/s²
Significant tornado parameter: 0.5
Supercell composite: 4.8

Open this sounding in Storm Lab

What forecasters said that day

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

NWS Rapid City, SD wrote its last area forecast discussion before this tornado warning went out at Jul 17, 12:58 AM CDT, 1 hour 53 minutes earlier.

Area forecast discussion, Jul 17, 12:58 AM CDT, 1 hour 53 minutes before

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Hazardous weather outlook, Jul 16, 6:37 AM CDT, 20 hours 14 minutes before

Hazardous Weather Outlook
National Weather Service Rapid City SD
537 AM MDT Tue Jul 16 2019

SDZ012-024>031-041-042-072>074-WYZ054>058-071-171300-
Butte-Northern Black Hills-Northern Foot Hills-Rapid City-
Southern Foot Hills-Central Black Hills-Southern Black Hills-
Custer Co Plains-Pennington Co Plains-Fall River-Oglala Lakota-
Sturgis/Piedmont Foot Hills-Southern Meade Co Plains-
Hermosa Foot Hills-Northern Campbell-Southern Campbell-
Western Crook-Wyoming Black Hills-Weston-Northeastern Crook-
537 AM MDT Tue Jul 16 2019

This Hazardous Weather Outlook is for portions of northwestern
South Dakota...southwestern South Dakota...the Black Hills of
South Dakota...northeast Wyoming...and the Black Hills of
Wyoming.

.DAY ONE...Today and Tonight

Isolated to scattered severe thunderstorms are expected this
afternoon and evening across the area. Large hail, damaging winds,
and torrential rainfall are the main concern with any storm. An
isolated tornado or two will be possible.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday

There is a chance for a few stronger thunderstorms on Wednesday,
with hail and strong wind gusts the main threats. Isolated
thunderstorms will be possible again on Friday, and into the
weekend.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed today.

&&

Stay tuned to NOAA weather radio for further updates...or check
our web site at weather.gov/rapidcity

SDZ001-002-013-014-032-043-044-046-047-049-171300-
Harding-Perkins-Northern Meade Co Plains-Ziebach-Haakon-Jackson-
Bennett-Mellette-Todd-Tripp-
537 AM MDT Tue Jul 16 2019 /637 AM CDT Tue Jul 16 2019/

This Hazardous Weather Outlook is for portions of western South
Dakota.

.DAY ONE...Today and Tonight

Isolated to scattered severe thunderstorms are expected this
afternoon and evening across the area. Large hail, damaging winds,
and torrential rainfall are the main concern with any storm. An
isolated tornado or two will be possible.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday

Isolated thunderstorms will be possible on Wednesday, and again
on Friday and into the weekend. Organized severe storms are not
anticipated at this time.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed today.

&&

Stay tuned to NOAA weather radio for further updates...or check
our web site at weather.gov/rapidcity

In the hours before

Local storm report, Jul 17, 1:39 AM CDT, 1 hour 12 minutes before

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Special weather statement, Jul 17, 1:46 AM CDT, 1 hour 5 minutes before

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Special weather statement, Jul 17, 2:11 AM CDT, 40 minutes before

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Special weather statement, Jul 17, 2:13 AM CDT, 38 minutes before

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Local storm report, Jul 17, 2:21 AM CDT, 30 minutes before

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Special weather statement, Jul 17, 2:44 AM CDT, 7 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 16, 7:11 PM CDT	Severe Thunderstorm Warning	UNR	Custer, Fall River	49 min
Jul 16, 7:40 PM CDT	Special Weather Statement	UNR		50 min
Jul 16, 7:56 PM CDT	Severe Thunderstorm Warning	UNR	Custer, Fall River, Oglala Lakota	49 min
Jul 16, 7:58 PM CDT	Severe Thunderstorm Warning	UNR	Lawrence, Pennington	47 min
Jul 16, 8:41 PM CDT	Severe Thunderstorm Warning	UNR	Butte, Lawrence	49 min
Jul 16, 9:06 PM CDT	Severe Thunderstorm Warning	UNR	Butte, Lawrence, Meade	39 min
Jul 16, 9:25 PM CDT	Severe Thunderstorm Warning	UNR	Bennett, Jackson, Oglala Lakota	50 min
Jul 16, 9:33 PM CDT	Severe Thunderstorm Warning	UNR	Harding	57 min
Jul 16, 9:35 PM CDT	Special Weather Statement	UNR	Jackson	40 min
Jul 16, 9:39 PM CDT	Severe Thunderstorm Warning	UNR	Butte	51 min
Jul 16, 10:03 PM CDT	Severe Thunderstorm Warning	UNR	Bennett, Haakon, Jackson, Mellette, Todd	57 min
Jul 16, 10:26 PM CDT	Severe Thunderstorm Warning	UNR	Butte, Harding, Meade, Perkins	37 min
Jul 16, 10:47 PM CDT	Special Weather Statement	UNR	Harding	43 min
Jul 16, 11:02 PM CDT	Special Weather Statement	UNR	Mellette, Todd	58 min
Jul 16, 11:04 PM CDT	Special Weather Statement	UNR	Perkins	26 min
Jul 16, 11:18 PM CDT	Special Weather Statement	UNR	Meade	42 min
Jul 16, 11:36 PM CDT	Severe Thunderstorm Warning	UNR	Todd	23 min
Jul 17, 1:13 AM CDT	Special Weather Statement	UNR	Jackson	47 min
Jul 17, 1:39 AM CDT	Areal Flood Warning	UNR	Butte	10 hr
Jul 17, 1:46 AM CDT	Special Weather Statement	UNR	Jones	44 min
Jul 17, 2:11 AM CDT	Special Weather Statement	UNR	Haakon	49 min
Jul 17, 2:13 AM CDT	Special Weather Statement	UNR	Jackson	62 min
Jul 17, 2:16 AM CDT	Areal Flood Warning	UNR	Jackson, Mellette	3 hr
Jul 17, 2:21 AM CDT	Tornado Warning	UNR	Bennett, Todd	39 min
Jul 17, 3:11 AM CDT	Special Weather Statement	UNR	Todd	49 min
Jul 17, 3:15 AM CDT	Special Weather Statement	UNR	Tripp	45 min
Jul 17, 3:46 AM CDT	Special Weather Statement	UNR	Tripp	44 min
Jul 17, 3:50 AM CDT	Heat Advisory	UNR	Tripp	9 hr
Jul 17, 3:55 AM CDT	Special Weather Statement	UNR	Haakon	65 min
Jul 17, 4:21 AM CDT	Special Weather Statement	UNR	Tripp	54 min
Jul 17, 4:38 AM CDT	Special Weather Statement	UNR	Haakon	52 min
Jul 17, 3:52 PM CDT	Special Weather Statement	UNR		23 min
Jul 17, 6:55 PM CDT	Severe Thunderstorm Warning	UNR	Fall River	21 min
Jul 17, 6:59 PM CDT	Severe Thunderstorm Warning	UNR	Lawrence, Meade	61 min
Jul 16, 7:23 PM CDT	Special Weather Statement	UNR	Weston	52 min
Jul 16, 7:43 PM CDT	Special Weather Statement	UNR	Weston	47 min
Jul 16, 8:03 PM CDT	Severe Thunderstorm Warning	UNR	Campbell	57 min
Jul 16, 8:25 PM CDT	Tornado Warning	UNR	Campbell, Crook	26 min
Jul 16, 8:29 PM CDT	Severe Thunderstorm Warning	UNR	Campbell, Crook	46 min
Jul 16, 8:36 PM CDT	Tornado Warning Tornado observed	UNR	Campbell, Crook	28 min
Jul 16, 8:52 PM CDT	Severe Thunderstorm Warning	UNR	Campbell, Crook	25 min
Jul 16, 8:53 PM CDT	Severe Thunderstorm Warning	UNR	Campbell, Weston	52 min
Jul 16, 9:02 PM CDT	Tornado Warning	UNR	Crook	13 min
Jul 17, 12:32 AM CDT	Special Weather Statement	UNR	Campbell	28 min
Jul 17, 2:44 AM CDT	Special Weather Statement	UNR	Campbell	46 min
Jul 17, 4:15 PM CDT	Special Weather Statement	UNR	Campbell	30 min
Jul 17, 5:14 PM CDT	Severe Thunderstorm Warning	UNR	Campbell, Crook	61 min
Jul 17, 5:52 PM CDT	Severe Thunderstorm Warning	UNR	Campbell, Crook	23 min
Jul 17, 6:05 PM CDT	Severe Thunderstorm Warning	UNR	Campbell, Crook, Weston	55 min
Jul 17, 6:17 PM CDT	Severe Thunderstorm Warning	UNR	Crook	43 min
Jul 17, 6:50 PM CDT	Severe Thunderstorm Warning	UNR	Crook, Weston	55 min

Nearby

Tornado Warnings in South Dakota, 2019 Every tornado warning in 2019 Tornadoes 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.