Alert archive / South Dakota / Tornado Warnings in 2008

Tornado Warning 4, NWS Rapid City, SD

May 24, 2008Ziebach County, South Dakota

NWS Rapid City, SD issued this tornado warning at May 24, 2008, 3:46 PM MDT for Ziebach County, South Dakota. It was in force for 44 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 24, 2008, 3:46 PM MDT (21:46 UTC)
Expired: May 24, 2008, 4:30 PM MDT
In force: 44 min
Issued by: NWS Rapid City, SD
Area: Storm-based polygon

County Ziebach County, SD

The radar

The Rapid City radar (KUDX), 132 km from the middle of the area, began a volume at 21:46 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 24, 1:39 PM MDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Rapid City, SD (KUNR), launched 12:00Z, 9.8 hours before the alert went out and 140 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: 34 J/kg
Mixed-layer CIN: -9 J/kg
Mixed-layer LCL: 554 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: 136 m²/s²
0-3 km storm-relative helicity: 142 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 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 May 24, 12:33 PM MDT, 3 hours 13 minutes earlier.

Area forecast discussion, May 24, 12:33 PM MDT, 3 hours 13 minutes before

AREA FORECAST DISCUSSION FOR WESTERN SD AND NORTHEASTERN WY
NATIONAL WEATHER SERVICE RAPID CITY SD
1233 PM MDT SAT MAY 24 2008

.DISCUSSION...18Z SURFACE ANALYSIS HAD LOW NEAR BROADUS WITH
CURVED BOUNDARY INTO THE NE PANHANDLE. ALOFT UPPER LOW SPINNING
OVER WY/MT/SD BORDER WITH DRY SLOT OVER THE SD PLAINS. THE RESULT IS
DESTABILIZATION FROM K2WX TO KICR...0.5-1.5KJ/KG MUCAPE FORECAST.
LATEST RADAR LOOPS/1KM VISIBLE INDICATE NO CAP TO SPEAK OF...AND
THUS CONVECTION HAS STARTED. SHEAR SUFFICIENT FOR SUPERCELLS WITH
MARGINAL 0-1KM SHEAR FOR AN ISOLATED TORNADO. LOOKS LIKE WE COULD
GET A FEW SEVERE STORMS THIS AFTERNOON...QUICKLY MOVING EAST OF
THE CWA THIS EVENING. MAIN NEGATIVE IS IMPLIED SUBSIDENCE BEHIND
MAJOR SHORTWAVE IN NORTHEAST MT/WESTERN ND WRAPPING AROUND UPPER
LOW. DO EXPECT -SHRA/-TSRA OVERNIGHT OVER MOST OF THE CWA...BUT
MUCH LOWER PRECIPITABLE WATERS AND DIURNAL COMPONENT TO ACTIVITY
SHOULD PRECLUDE HEAVY RAINS.

SUNDAY...UPPER LOW DANCES INTO NORTHERN MN BY SUNDAY EVENING.
SHOULD BE MUCH WARMER OVER THE CWA. COULD SEE A FEW -SHRA/-TSRA
NEAREST UPPER LOW COLD POOL.

MONDAY...SHORTWAVE RIDGE GIVES WAY TO MODERATELY STRONG SHORTWAVE
ENERGY MOVING INTO THE NORTHERN PLAINS. THIS WILL BRING ANOTHER
ROUND OF CONVECTION TO THE AREA...ESPECIALLY MONDAY NIGHT. LOCALIZED
HEAVY RAINS WILL BE POSSIBLE WITH WELL-DEFINED EASTERLY FLOW
COMING OFF SURFACE ANTICYCLONE CENTERED OVER ND AND LOW OVER
WESTERN WY.

EXTENDED...SOME UNSETTLED WEATHER CAN BE EXPECTED THROUGH MUCH OF
THIS COMING WEEK AS THE REGION REMAINS UNDER WEST TO SOUTHWEST FLOW
ALOFT. SHOWERS AND STORMS ARE EXPECTED ON TUESDAY...BUT SHOULD SEE A
BREAK IN THE WEATHER FOR WEDNESDAY...ALONG WITH WARMER TEMPERATURES.
CHANCES FOR STORMS WILL RETURN LATER THURSDAY AND LINGER THROUGH
FRIDAY...AS ANOTHER WEAK DISTURBANCE PASSES OVER THE NORTHERN
PLAINS.

&&

.AVIATION...FAIRLY WIDESPREAD AREA OF STRATUS WILL CONTINUE TO BRING
IFR/MVFR CIGS THROUGH TONIGHT ACROSS NORTHEAST WYOMING. MUCH OF
WESTERN SOUTH DAKOTA WILL SE SCATTERED TO BROKEN MVFR CIGS WITH
SCATTERED SHOWERS AND THUNDERSTORMS FROM KRAP EAST THIS AFTERNOON
AND EVENING. CONDITIONS WILL IMPROVE OVERNIGHT AS THIS WEATHER
SYSTEM LIFTS INTO CANADA.

&&

.UNR WATCHES/WARNINGS/ADVISORIES...
SD...NONE.
WY...NONE.
&&

HELGESON/RUDGE

Hazardous weather outlook, May 24, 8:45 AM MDT, 7 hours 1 minute before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE RAPID CITY SD
845 AM MDT SAT MAY 24 2008

SDZ001-002-012>014-024>032-041>044-046-047-049-072>074-WYZ054>058-
071-251300-
BENNETT-BUTTE-CENTRAL BLACK HILLS-CUSTER CO PLAINS-FALL RIVER-HAAKON-
HARDING-HERMOSA FOOT HILLS-JACKSON-MELLETTE-NORTHEASTERN CROOK-
NORTHERN BLACK HILLS-NORTHERN CAMPBELL-NORTHERN FOOT HILLS-
NORTHERN MEADE CO PLAINS-PENNINGTON CO PLAINS-PERKINS-RAPID CITY-
SHANNON-SOUTHERN BLACK HILLS-SOUTHERN CAMPBELL-SOUTHERN FOOT HILLS-
SOUTHERN MEADE CO PLAINS-STURGIS/PIEDMONT FOOT HILLS-TODD-TRIPP-
WESTERN CROOK-WESTON-WYOMING BLACK HILLS-ZIEBACH-
845 AM MDT (945 AM CDT) SAT MAY 24 2008

THIS HAZARDOUS WEATHER OUTLOOK IS FOR WESTERN SOUTH DAKOTA AND
NORTHEASTERN WYOMING.

.DAY ONE...TODAY AND TONIGHT

A STRONG STORM SYSTEM WILL MOVE INTO EASTERN MONTANA TODAY. IT WILL
PUSH A FRONT ONTO THE SOUTH DAKOTA PLAINS. AHEAD OF THE FRONT...
MODEST INSTABILITY WILL DEVELOP. EXPECT THUNDERSTORMS TO ERUPT
ALONG THE BOUNDARY THIS AFTERNOON AND EXIT THE AREA THIS EVENING.

THERE WILL BE A SLIGHT RISK OF SEVERE THUNDERSTORMS THIS AFTERNOON
AND THIS EVENING EAST OF A LINE FROM BUFFALO SOUTH DAKOTA TO
ROSEBUD. LARGE HAIL AND DAMAGING WIND WILL BE THE MAIN THREAT...BUT
AN ISOLATED TORNADO MAY OCCUR.

DUE TO RECENT HEAVY RAINS...AREA RIVERS...CREEKS...AND STREAM WILL
CONTINUE TO RUN HIGH OR FLOOD OVER PARTS OF THE AREA THROUGH
TONIGHT.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY

A STRONG UPPER LEVEL DISTURBANCE WILL BRING SHOWERS AND THUNDERSTORMS
TO THE REGION MONDAY AFTERNOON AND NIGHT. THESE STORMS WILL BRING
THE THREAT OF ADDITIONAL HEAVY RAINFALL.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NEEDED TODAY.

In the hours before

Local storm report, May 24, 10:49 AM MDT, 4 hours 57 minutes before

PRELIMINARY LOCAL STORM REPORT...SUMMARY
NATIONAL WEATHER SERVICE RAPID CITY SD
1049 AM MDT SAT MAY 24 2008

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

0700 AM     HEAVY RAIN       WSW STURGIS             44.41N 103.51W
05/24/2008  M1.39 INCH       MEADE              SD   PUBLIC

            COCORAHS

0700 AM     HEAVY RAIN       2 NNW BLACK HAWK        44.18N 103.33W
05/24/2008  M1.75 INCH       MEADE              SD   PUBLIC

            COCORAHS

0700 AM     HEAVY RAIN       4 NNW WHITEWOOD         44.51N 103.67W
05/24/2008  M1.02 INCH       LAWRENCE           SD   PUBLIC

            COCORAHS

0700 AM     HEAVY RAIN       OPAL                    44.89N 102.61W
05/24/2008  M0.51 INCH       MEADE              SD   CO-OP OBSERVER

0700 AM     HEAVY RAIN       ELM SPRINGS             44.31N 102.53W
05/24/2008  M1.76 INCH       MEADE              SD   CO-OP OBSERVER

0700 AM     HEAVY RAIN       2 SE PHILIP             44.03N 101.64W
05/24/2008  M0.47 INCH       HAAKON             SD   PUBLIC

            COCORAHS

0700 AM     HEAVY RAIN       10 ESE EDGEMONT         43.24N 103.64W
05/24/2008  M1.21 INCH       FALL RIVER         SD   PUBLIC

0700 AM     HEAVY RAIN       7 W EDGEMONT            43.30N 103.97W
05/24/2008  M1.37 INCH       FALL RIVER         SD   PUBLIC

            COCORAHS

0700 AM     HEAVY RAIN       3 WSW HOT SPRINGS       43.42N 103.54W
05/24/2008  M1.39 INCH       FALL RIVER         SD   PUBLIC

            COCORAHS

0700 AM     HEAVY RAIN       HOT SPRINGS             43.43N 103.48W
05/24/2008  M1.71 INCH       FALL RIVER         SD   PUBLIC

            COCORAHS

0700 AM     HEAVY RAIN       7 SW OELRICHS           43.11N 103.33W
05/24/2008  M1.00 INCH       FALL RIVER         SD   PUBLIC

            COCORAHS

0700 AM     HEAVY RAIN       1 W HOT SPRINGS         43.43N 103.50W
05/24/2008  M1.57 INCH       FALL RIVER         SD   PUBLIC

            COCORAHS

0700 AM     HEAVY RAIN       2 ENE NEWELL            44.73N 103.38W
05/24/2008  M0.59 INCH       BUTTE              SD   PUBLIC

            COCORAHS

0700 AM     HEAVY RAIN       ORAL                    43.40N 103.27W
05/24/2008  M1.69 INCH       FALL RIVER         SD   CO-OP OBSERVER

0700 AM     HEAVY RAIN       RAPID CITY              44.08N 103.23W
05/24/2008  M0.92 INCH       PENNINGTON         SD   CO-OP OBSERVER

            WFO REPORT

0700 AM     HEAVY RAIN       PACTOLA RESERVOIR       44.07N 103.50W
05/24/2008  M2.94 INCH       PENNINGTON         SD   CO-OP OBSERVER

0700 AM     HEAVY RAIN       11 NW RAPID CITY        44.19N 103.39W
05/24/2008  M1.75 INCH       MEADE              SD   TRAINED SPOTTER

0700 AM     HEAVY RAIN       1 SE OELRICHS           43.17N 103.22W
05/24/2008  M1.95 INCH       FALL RIVER         SD   PUBLIC

            COCORAHS

0700 AM     HEAVY RAIN       3 NE ROCKERVILLE        43.98N 103.32W
05/24/2008  M2.03 INCH       PENNINGTON         SD   TRAINED SPOTTER

0700 AM     HEAVY RAIN       SAINT ONGE              44.55N 103.72W
05/24/2008  M0.83 INCH       LAWRENCE           SD   TRAINED SPOTTER

            2.21 INCHES FOR 2 DAYS

0700 AM     HEAVY RAIN       EDGEMONT                43.30N 103.83W
05/24/2008  M1.50 INCH       FALL RIVER         SD   PUBLIC

0700 AM     HEAVY RAIN       4 SE BISON              45.48N 102.41W
05/24/2008  M0.50 INCH       PERKINS            SD   PUBLIC

            COCORAHS

0700 AM     HEAVY RAIN       11 SW LEMMON            45.83N 102.32W
05/24/2008  M0.60 INCH       PERKINS            SD   PUBLIC

            COCORAHS

0700 AM     HEAVY RAIN       6 ESE BOX ELDER         44.09N 102.96W
05/24/2008  M0.77 INCH       PENNINGTON         SD   PUBLIC

            COCORAHS

0700 AM     HEAVY RAIN       SILVER CITY             44.09N 103.57W
05/24/2008  M1.51 INCH       PENNINGTON         SD   PUBLIC

            COCORAHS

0700 AM     HEAVY RAIN       3 SSW RAPID CITY        44.04N 103.26W
05/24/2008  M2.01 INCH       PENNINGTON         SD   PUBLIC

            COCORAHS

0700 AM     HEAVY RAIN       6 WNW RAPID CITY        44.11N 103.34W
05/24/2008  M1.75 INCH       PENNINGTON         SD   PUBLIC

            COCORAHS

0700 AM     HEAVY RAIN       2 WNW RAPID CITY        44.09N 103.27W
05/24/2008  M2.08 INCH       PENNINGTON         SD   PUBLIC

            COCORAHS

0700 AM     HEAVY RAIN       9 SW RAPID CITY         43.98N 103.36W
05/24/2008  M1.90 INCH       PENNINGTON         SD   PUBLIC

            COCORAHS

0700 AM     HEAVY RAIN       5 SW RAPID CITY         44.02N 103.30W
05/24/2008  M2.01 INCH       PENNINGTON         SD   PUBLIC

            COCORAHS

0700 AM     HEAVY RAIN       5 ESE RAPID CITY        44.05N 103.14W
05/24/2008  M1.15 INCH       PENNINGTON         SD   PUBLIC

            COCORAHS

0700 AM     HEAVY RAIN       3 WNW RAPID CITY        44.09N 103.29W
05/24/2008  M2.18 INCH       PENNINGTON         SD   PUBLIC

            COCORAHS

0714 AM     HEAVY RAIN       RAPID CITY              44.08N 103.23W
05/24/2008  M2.20 INCH       PENNINGTON         SD   NWS EMPLOYEE

0714 AM     HEAVY RAIN       10 ESE ZEONA            45.16N 102.71W
05/24/2008  M0.62 INCH       PERKINS            SD   TRAINED SPOTTER

0800 AM     HEAVY RAIN       1 ENE WALL              44.00N 102.22W
05/24/2008  M0.77 INCH       PENNINGTON         SD   PUBLIC

            COCORAHS

0800 AM     HEAVY RAIN       1 S STURGIS             44.40N 103.51W
05/24/2008  M1.76 INCH       MEADE              SD   PUBLIC

            COCORAHS

0800 AM     HEAVY RAIN       E SPEARFISH             44.50N 103.86W
05/24/2008  M0.71 INCH       LAWRENCE           SD   PUBLIC

            COCORAHS

0800 AM     HEAVY RAIN       SSE BELLE FOURCHE       44.67N 103.85W
05/24/2008  M0.79 INCH       BUTTE              SD   PUBLIC

            COCORAHS

0800 AM     HEAVY RAIN       5 NE BELLE FOURCHE      44.72N 103.78W
05/24/2008  M0.90 INCH       BUTTE              SD   PUBLIC

            COCORAHS

0823 AM     HEAVY RAIN       2 W HAYWARD             43.87N 103.38W
05/24/2008  M2.00 INCH       PENNINGTON         SD   TRAINED SPOTTER

            SINCE 5 PM

0835 AM     HEAVY RAIN       1 S WESTON              44.62N 105.33W
05/24/2008  M1.29 INCH       CAMPBELL           WY   CO-OP OBSERVER

0907 AM     HEAVY RAIN       7 W HERMOSA             43.84N 103.33W
05/24/2008  M2.00 INCH       CUSTER             SD   NWS EMPLOYEE

&&

MERICKSO

Local storm report, May 24, 1:15 PM MDT, 2 hours 31 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE RAPID CITY SD
115 PM MDT SAT MAY 24 2008

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

1250 PM     HAIL             SPRING CREEK            43.12N 101.02W
05/24/2008  E1.75 INCH       TODD               SD   LAW ENFORCEMENT

            ROAD COVERED WITH HAIL...LARGEST WAS GOLF BALL

&&

WFO UNR STAFF

Local storm report, May 24, 2:35 PM MDT, 1 hour 11 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE RAPID CITY SD
235 PM MDT SAT MAY 24 2008

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

0110 PM     HAIL             1 NE ROSEBUD            43.24N 100.84W
05/24/2008  E0.88 INCH       TODD               SD   TRAINED SPOTTER

            LASTED 4 MINUTES

0200 PM     HAIL             9 SW MILESVILLE         44.37N 101.81W
05/24/2008  E1.00 INCH       HAAKON             SD   PUBLIC

&&

MERICKSO

Local storm report, May 24, 2:36 PM MDT, 1 hour 10 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE RAPID CITY SD
236 PM MDT SAT MAY 24 2008

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

0155 PM     HAIL             WOOD                    43.50N 100.48W
05/24/2008  E0.75 INCH       MELLETTE           SD   TRAINED SPOTTER

&&

MERICKSO

Local storm report, May 24, 3:02 PM MDT, 44 minutes before

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Local storm report, May 24, 3:35 PM MDT, 11 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
May 24, 1:36 AM MDT	River Flood Warning	UNR	Haakon, Meade, Pennington, Ziebach	69 hr
May 24, 1:07 PM MDT	Severe Thunderstorm Warning	UNR	Todd	38 min
May 24, 1:35 PM MDT	Severe Thunderstorm Warning	UNR	Mellette	55 min
May 24, 1:39 PM MDT	Severe Thunderstorm Warning	UNR	Haakon	66 min
May 24, 2:41 PM MDT	Severe Thunderstorm Warning	UNR	Ziebach	64 min
May 24, 2:42 PM MDT	Severe Thunderstorm Warning	UNR	Perkins	63 min
May 24, 3:11 PM MDT	Tornado Warning	UNR	Haakon, Ziebach	34 min
May 24, 4:08 PM MDT	Severe Thunderstorm Warning	UNR	Perkins	67 min
May 23, 7:12 PM MDT	Areal Flood Warning	UNR	Campbell, Crook, Weston	24 hr

Nearby

Tornado Warnings in South Dakota, 2008 Every tornado warning in 2008 Tornadoes in 2008

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.