Alert archive / South Dakota / Flash Flood Warnings in 2016

Flash Flood Warning 5, NWS Rapid City, SD

July 26, 2016Mellette County, Todd County, South Dakota

NWS Rapid City, SD issued this flash flood warning at Jul 26, 2016, 7:00 PM CDT for Mellette County, Todd County, South Dakota. It was in force for 6 hr. 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 26, 2016, 7:00 PM CDT (00:00 UTC)
Expired: Jul 27, 2016, 1:00 AM CDT
In force: 6 hr
Issued by: NWS Rapid City, SD
Area: Storm-based polygon
Flood severity: None

Counties Mellette County, SD, Todd County, SD

The radar

The North Platte radar (KLNX), 159 km from the middle of the area, began a volume at 00:03 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 (KRAP), launched 00:00Z, 0.0 hours before the alert went out and 188 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: 850 J/kg
Mixed-layer CIN: -152 J/kg
Mixed-layer LCL: 2499 m above ground
0-6 km bulk shear: 43 kt
0-1 km storm-relative helicity: -98 m²/s²
0-3 km storm-relative helicity: -31 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.2

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this flash flood 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 flash flood warning went out at Jul 26, 3:47 PM CDT, 3 hours 13 minutes earlier.

Area forecast discussion, Jul 26, 3:47 PM CDT, 3 hours 13 minutes before

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Hazardous weather outlook, Jul 26, 5:26 AM CDT, 13 hours 34 minutes before

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In the hours before

Special weather statement, Jul 26, 5:37 PM CDT, 1 hour 23 minutes before

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Local storm report, Jul 26, 6:14 PM CDT, 46 minutes before

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Special weather statement, Jul 26, 6:21 PM CDT, 39 minutes before

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Special weather statement, Jul 26, 6:27 PM CDT, 33 minutes before

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Local storm report, Jul 26, 6:32 PM CDT, 28 minutes before

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Local storm report, Jul 26, 6:44 PM CDT, 16 minutes before

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      <p id="message2">
        Please try again in a few minutes.
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      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
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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 26, 7:13 PM CDT	Severe Thunderstorm Warning	UNR	Todd	62 min
Jul 26, 7:23 PM CDT	Special Weather Statement	UNR	Tripp	52 min
Jul 26, 7:28 PM CDT	Severe Thunderstorm Warning	UNR	Fall River, Oglala Lakota	42 min
Jul 26, 7:29 PM CDT	Severe Thunderstorm Warning	UNR	Tripp	61 min
Jul 26, 7:38 PM CDT	Tornado Warning	UNR	Fall River	16 min
Jul 26, 7:54 PM CDT	Severe Thunderstorm Warning	UNR	Todd	66 min
Jul 26, 8:07 PM CDT	Severe Thunderstorm Warning	UNR	Tripp	53 min
Jul 26, 8:34 PM CDT	Severe Thunderstorm Warning	UNR	Bennett, Todd	56 min
Jul 27, 12:37 PM CDT	Special Weather Statement	UNR	Harding	53 min
Jul 27, 1:37 PM CDT	Special Weather Statement	UNR	Perkins	38 min
Jul 27, 2:01 PM CDT	Special Weather Statement	UNR	Custer	44 min
Jul 27, 2:55 PM CDT	Special Weather Statement	UNR	Custer	50 min
Jul 27, 2:59 PM CDT	Special Weather Statement	UNR	Todd	46 min
Jul 27, 3:05 PM CDT	Special Weather Statement	UNR	Haakon	40 min
Jul 27, 3:21 PM CDT	Severe Thunderstorm Warning	UNR	Custer, Fall River, Oglala Lakota	54 min
Jul 27, 3:51 PM CDT	Special Weather Statement	UNR	Haakon	39 min
Jul 27, 4:38 PM CDT	Special Weather Statement	UNR	Todd	52 min
Jul 27, 4:43 PM CDT	Special Weather Statement	UNR	Haakon, Jackson	47 min
Jul 27, 5:31 PM CDT	Special Weather Statement	UNR	Mellette, Todd	59 min
Jul 27, 6:33 PM CDT	Special Weather Statement	UNR	Todd	57 min
Jul 26, 7:17 PM CDT	Special Weather Statement	UNR	Campbell	58 min
Jul 26, 8:12 PM CDT	Special Weather Statement	UNR	Campbell	48 min
Jul 27, 5:36 PM CDT	Special Weather Statement	UNR	Campbell	39 min
Jul 27, 5:53 PM CDT	Special Weather Statement	UNR	Campbell	52 min
Jul 27, 5:56 PM CDT	Special Weather Statement	UNR	Campbell	34 min
Jul 27, 6:24 PM CDT	Special Weather Statement	UNR	Campbell	36 min
Jul 27, 6:56 PM CDT	Special Weather Statement	UNR	Weston	34 min
Jul 27, 6:59 PM CDT	Special Weather Statement	UNR	Campbell	46 min

Nearby

Flash Flood Warnings in South Dakota, 2016 Every flash flood warning in 2016

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.