Alert archive / South Dakota / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 158, NWS Aberdeen, SD

July 25, 20154 counties in South Dakota

NWS Aberdeen, SD issued this severe thunderstorm warning at Jul 25, 2015, 6:46 PM CDT for 4 counties in South Dakota. It was in force for 59 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 25, 2015, 6:46 PM CDT (23:46 UTC)
Expired
Jul 25, 2015, 7:45 PM CDT
In force
59 min
Issued by
NWS Aberdeen, SD
Area
Storm-based polygon
Hail
1.0 in
Wind
60.0 mph

Counties Brown County, SD, Clark County, SD, Day County, SD, Spink County, SD

The radar

The Aberdeen radar (KABR), 43 km from the middle of the area, began a volume at 23:49 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.

IssuedProductOfficeLasted
Jul 25, 4:03 PM CDTTornado WatchSPC7 hr

The nearest sounding before it

Aberdeen, SD (KABR), launched 12:00Z, 11.8 hours before the alert went out and 44 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-pSkew-T log-p diagram, Aberdeen, SD at 12:00Z on 2015-07-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 272 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Aberdeen, SD at 12:00Z on 2015-07-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 31 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
272 J/kg
Mixed-layer CIN
-256 J/kg
Mixed-layer LCL
2141 m above ground
0-6 km bulk shear
29 kt
0-1 km storm-relative helicity
31 m²/s²
0-3 km storm-relative helicity
143 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.1

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 Jul 25, 6:43 PM CDT, 3 minutes earlier.

Area forecast discussion, Jul 25, 6:43 PM CDT, 3 minutes before
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Hazardous weather outlook, Jul 25, 3:54 AM CDT, 14 hours 52 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE ABERDEEN SD
354 AM CDT SAT JUL 25 2015

MNZ039-046-SDZ003>011-015>023-033>037-045-048-051-260900-
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-
354 AM CDT SAT JUL 25 2015

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF WEST CENTRAL
MINNESOTA...CENTRAL SOUTH DAKOTA...NORTH CENTRAL SOUTH DAKOTA AND
NORTHEAST SOUTH DAKOTA.

.DAY ONE...TODAY AND TONIGHT

SCATTERED STORMS WILL AFFECT THE REGION THIS MORNING BUT THE
SEVERE WEATHER THREAT WILL BE LOW UNTIL LATER THIS AFTERNOON. HIGH
WINDS AND HAIL WILL BE THE MAIN THREAT THIS AFTERNOON AND EVENING.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY

OFF AND ON CHANCES FOR STORMS EXISTS INTO THE START OF NEXT WEEK.
SEVERE WEATHER POTENTIAL APPEARS LOW AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE REQUESTED THIS AFTERNOON AND EVENING.

CONNELLY

In the hours before

Local storm report, Jul 25, 5:35 PM CDT, 1 hour 11 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ABERDEEN SD
535 PM CDT SAT JUL 25 2015

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

0534 PM     TSTM WND GST     LOYALTON                45.29N  99.28W
07/25/2015  E60 MPH          EDMUNDS            SD   TRAINED SPOTTER

&&

EVENT NUMBER ABR1500675

KG
Special weather statement, Jul 25, 6:01 PM CDT, 45 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ABERDEEN SD
601 PM CDT SAT JUL 25 2015

SDZ009-015-016-252345-
WALWORTH SD-POTTER SD-DEWEY SD-
601 PM CDT SAT JUL 25 2015

...SIGNIFICANT WEATHER ADVISORY FOR EASTERN DEWEY...SOUTHEASTERN
WALWORTH AND NORTHWESTERN POTTER COUNTIES UNTIL 645 PM CDT/545 PM
MDT/...

AT 600 PM CDT /500 PM MDT/...DOPPLER RADAR WAS TRACKING A STRONG
THUNDERSTORM 9 MILES SOUTH OF AKASKA...OR 15 MILES NORTHWEST OF
GETTYSBURG...MOVING EAST AT 25 MPH.

NICKEL SIZE HAIL AND WIND GUSTS UP TO 50 MPH WILL BE POSSIBLE WITH
THIS STORM.

THIS STORM WILL REMAIN OVER MAINLY RURAL AREAS OF EASTERN DEWEY...
SOUTHEASTERN WALWORTH AND NORTHWESTERN POTTER COUNTIES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THIS STORM...AND MAY LEAD
TO FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.

TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT
AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
OFFICE IN ABERDEEN.

&&

A TORNADO WATCH REMAINS IN EFFECT UNTIL 1100 PM CDT/1000 PM MDT/ FOR
NORTH CENTRAL SOUTH DAKOTA.

LAT...LON 4508 9981 4508 10022 4525 10027 4533 9987
TIME...MOT...LOC 2300Z 258DEG 20KT 4519 10012

VIPOND
Local storm report, Jul 25, 6:04 PM CDT, 42 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ABERDEEN SD
604 PM CDT SAT JUL 25 2015

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

0600 PM     TSTM WND GST     10 S IPSWICH            45.30N  99.03W
07/25/2015  M60 MPH          EDMUNDS            SD   FIRE DEPT/RESCUE

&&

EVENT NUMBER ABR1500676

WFOABR
Local storm report, Jul 25, 6:08 PM CDT, 38 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ABERDEEN SD
608 PM CDT SAT JUL 25 2015

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

0555 PM     TSTM WND GST     6 NW CRESBARD           45.23N  99.03W
07/25/2015  E60 MPH          FAULK              SD   PUBLIC

            2 TO 3 INCH BRANCHES DOWN

&&

EVENT NUMBER ABR1500677

WFOABR
Local storm report, Jul 25, 6:25 PM CDT, 21 minutes before
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Local storm report, Jul 25, 6:43 PM CDT, 3 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Jul 24, 11:43 PM CDTSevere Thunderstorm WarningABRDewey47 min
Jul 25, 12:24 AM CDTSevere Thunderstorm WarningABRDewey51 min
Jul 25, 1:34 AM CDTSpecial Weather StatementABRWalworth41 min
Jul 25, 7:24 AM CDTSevere Thunderstorm WarningABRJones, Stanley51 min
Jul 25, 8:14 AM CDTSevere Thunderstorm WarningABRJones, Lyman32 min
Jul 25, 3:24 PM CDTSevere Thunderstorm WarningABRCampbell, McPherson45 min
Jul 25, 3:47 PM CDTSevere Thunderstorm WarningABRMcPherson58 min
Jul 25, 4:18 PM CDTSevere Thunderstorm WarningABRDewey, Potter, Walworth28 min
Jul 25, 4:41 PM CDTSevere Thunderstorm WarningABRMcPherson49 min
Jul 25, 4:49 PM CDTTornado Warning Tornado observedABRMcPherson26 min
Jul 25, 4:54 PM CDTSevere Thunderstorm WarningABREdmunds, Faulk, Potter, Walworth51 min
Jul 25, 4:56 PM CDTSevere Thunderstorm WarningABREdmunds, Faulk, Potter, Walworth49 min
Jul 25, 5:38 PM CDTSevere Thunderstorm WarningABREdmunds, Faulk, Hand, Hyde, Potter67 min
Jul 25, 6:00 PM CDTSevere Thunderstorm WarningABRBrown, Edmunds, Faulk, Hand, Spink60 min
Jul 25, 6:01 PM CDTSpecial Weather StatementABRPotter44 min
Jul 25, 6:18 PM CDTFlash Flood WarningABRFaulk, Potter6 hr
Jul 25, 6:22 PM CDTFlash Flood WarningABREdmunds6 hr

Nearby

Severe Thunderstorm Warnings in South Dakota, 2015Every severe thunderstorm warning in 2015

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.