Alert archive / South Dakota / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 149, NWS Aberdeen, SD

July 23, 2016Deuel County, Grant County, South Dakota

NWS Aberdeen, SD issued this severe thunderstorm warning at Jul 23, 2016, 7:21 AM CDT for Deuel County, Grant County, South Dakota. It was in force for 17 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jul 23, 2016, 7:21 AM CDT (12:21 UTC)
Expired: Jul 23, 2016, 7:38 AM CDT
In force: 17 min
Issued by: NWS Aberdeen, SD
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Deuel County, SD, Grant County, SD

The radar

The Aberdeen radar (KABR), 144 km from the middle of the area, began a volume at 12:20 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.

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The nearest sounding before it

Aberdeen, SD (KABR), launched 12:00Z, 0.4 hours before the alert went out and 133 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: 3021 J/kg
Mixed-layer CIN: -38 J/kg
Mixed-layer LCL: 847 m above ground
0-6 km bulk shear: 18 kt
0-1 km storm-relative helicity: 1 m²/s²
0-3 km storm-relative helicity: 145 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

Open this sounding in Storm Lab

The text

As transmitted.

424 
WUUS53 KABR 231221
SVRABR
SDC039-051-231300-
/O.NEW.KABR.SV.W.0149.160723T1221Z-160723T1300Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ABERDEEN SD
721 AM CDT SAT JUL 23 2016

THE NATIONAL WEATHER SERVICE IN ABERDEEN HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN DEUEL COUNTY IN NORTHEASTERN SOUTH DAKOTA...
  EASTERN GRANT COUNTY IN NORTHEASTERN SOUTH DAKOTA...

* UNTIL 800 AM CDT

* AT 721 AM CDT...A SEVERE THUNDERSTORM WAS LOCATED OVER OAKWOOD
  STATE PARK...OR NEAR CLEAR LAKE...MOVING NORTH AT 40 MPH.

  HAZARD...60 MPH WIND GUSTS AND QUARTER SIZE HAIL. 

  SOURCE...RADAR INDICATED. 

  IMPACT...HAIL DAMAGE TO VEHICLES IS EXPECTED. EXPECT WIND DAMAGE 
           TO ROOFS...SIDING...AND TREES. 

* THIS SEVERE THUNDERSTORM WILL BE NEAR...
  TUNERVILLE AROUND 725 AM CDT. 
  BULLHEAD LAKE AND SCHOOL LAKE AROUND 730 AM CDT. 
  REVILLO AND STRANDBURG AROUND 740 AM CDT. 
  LA BOLT AND ALBEE AROUND 745 AM CDT. 
  STOCKHOLM AROUND 750 AM CDT. 
  MILBANK AND TWIN BROOKS AROUND 800 AM CDT. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

&&

LAT...LON 4476 9686 4529 9688 4527 9650 4472 9649
TIME...MOT...LOC 1221Z 182DEG 34KT 4485 9670 

HAIL...1.00IN
WIND...60MPH
 
$$

WISE

1 follow-up statement

983 
WWUS53 KABR 231238
SVSABR

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ABERDEEN SD
738 AM CDT SAT JUL 23 2016

SDC039-051-231248-
/O.CAN.KABR.SV.W.0149.000000T0000Z-160723T1300Z/
DEUEL SD-GRANT SD-
738 AM CDT SAT JUL 23 2016

...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN DEUEL AND EASTERN
GRANT COUNTIES IS CANCELLED...
                
THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR PROPERTY.
THEREFORE...THE WARNING HAS BEEN CANCELLED.  HOWEVER GUSTY WINDS ARE
STILL POSSIBLE WITH THIS THUNDERSTORM.

LAT...LON 4476 9686 4529 9688 4527 9650 4472 9649
TIME...MOT...LOC 1236Z 182DEG 34KT 4501 9669 

$$

WISE

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 23, 6:25 AM CDT, 56 minutes earlier.

Area forecast discussion, Jul 23, 6:25 AM CDT, 56 minutes before

Area Forecast Discussion...UPDATED
National Weather Service Aberdeen SD
625 AM CDT SAT JUL 23 2016

.SHORT TERM...(Today through Monday Afternoon)
Issued at 356 AM CDT SAT JUL 23 2016

Still dealing with a few showers and thunderstorms across the
western CWA, but for the most part, it's actually been a pretty
quiet night as far as thunderstorm activity goes. As the day
progresses, frontal boundary will march eastward into the area with
moderate to strong instability developing. Shortwave over the
northern Rockies will continue to move east providing support for
additional shower and thunderstorm development. Best 0-6km bulk
shear resides across ND, but there is enough over our area to
support strong to severe convection. Hi-res models trying to close
in on a scenario which includes initial development of storms over
ND within zone of ascent related to advancing shortwave. Upscale
growth to an MCS or multiple storm clusters then seems likely as
activity eventually moves into MN. How far south more organized and
widespread convection makes it is the big question. Models
suggesting more activity across ND where best bulk shear resides.
Although, there should be some degree of activity over this CWA as
well, and any storms that do form have the potential to be strong or
severe. Activity will quickly move east into MN this evening as the
front makes steady eastward progress. Much drier air will move in
behind the front and Sunday will be warm, but fairly comfortable as
dewpoints will be much lower than what we have seen this past week.

The rest of the short term is rather quiet. High pressure moves in
Sunday night with lows likely dipping into the 50s for many
locations which is something we have not seen for several days now.
Monday looks rather warm again as 850mb temps climb through the 20s
C. Probably looking at mid to upper 90s once again over central SD.
Although, with dewpoints likely remaining in the 50s, do not expect
heat indices to climb over 100 degrees at this point.

.LONG TERM...(Monday Evening through Friday)
Issued at 356 AM CDT SAT JUL 23 2016

Quasi-zonal flow aloft will transition to a weak trough and
northwest flow by the end of the period. A number of shortwaves
moving through the flow coupled with persistent weak sfc low
pressure will bring continued chances for showers and thunderstorms
through the extended. Temperatures will trend down through the week,
starting with high in the mid 80s to lower 90s and ending with highs
around 80.

&&

.AVIATION...(For the 12Z TAFS through 12Z Sunday Morning)
Issued at 622 AM CDT SAT JUL 23 2016

Mvfr/ifr stratus across the southern tier counties will erode by
15z. Showers and thunderstorms associated with a warm front this
morning and a cold front this afternoon will push across the
region. Mvfr/ifr cigs and vsbys are possible in stronger storms.

&&

.ABR Watches/Warnings/Advisories...
SD...NONE.
MN...NONE.
&&

SHORT TERM...TMT
LONG TERM...Wise
AVIATION...Wise

Hazardous weather outlook, Jul 23, 5:08 AM CDT, 2 hours 13 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE ABERDEEN SD
508 AM CDT SAT JUL 23 2016

MNZ039-046-SDZ003>011-015>023-033>037-045-048-051-241015-
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-
508 AM CDT SAT JUL 23 2016 /408 AM MDT SAT JUL 23 2016/

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

STRONG TO SEVERE STORMS ARE POSSIBLE EARLY THIS MORNING ACROSS
CENTRAL SOUTH DAKOTA. ADDITIONAL STRONG TO SEVERE STORMS ARE
POSSIBLE THROUGH THE DAY...ESPECIALLY OVER NORTHEAST SOUTH DAKOTA
AND WEST CENTRAL MINNESOTA DURING THE AFTERNOON HOURS.

THE GRASSLAND FIRE DANGER WILL REACH HIGH TO VERY HIGH ACROSS
CENTRAL SOUTH DAKOTA THIS AFTERNOON.

HEAT INDICES WILL TOP OUT AROUND 100 DEGREES FROM SOUTH CENTRAL
THROUGH EAST CENTRAL SOUTH DAKOTA.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NECESSARY THIS AFTERNOON ACROSS
NORTHEAST SOUTH DAKOTA AND WEST CENTRAL MINNESOTA.

TMT

In the hours before

Special weather statement, Jul 23, 4:55 AM CDT, 2 hours 26 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ABERDEEN SD
355 AM MDT SAT JUL 23 2016

SDZ015-033-231045-
DEWEY SD-STANLEY SD-
355 AM MDT SAT JUL 23 2016

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN STANLEY AND WESTERN
DEWEY COUNTIES UNTIL 445 AM MDT...

AT 354 AM MDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM
NEAR GREEN GRASS...OR 8 MILES NORTH OF EAGLE BUTTE...MOVING NORTH AT
30 MPH.

NICKEL SIZE HAIL AND WIND GUSTS OF 50 TO 55 MPH WILL BE POSSIBLE WITH
THIS STORM.

LOCATIONS IMPACTED INCLUDE...
EAGLE BUTTE...LANTRY...ISABEL...WHITE HORSE...GREEN GRASS...
BEAR CREEK...LITTLE MOREAU REC AREA AND PARADE.

LAT...LON 4504 10148 4538 10149 4539 10147 4541 10147
      4538 10078 4468 10085 4471 10114 4499 10114
      4500 10150 4503 10150
TIME...MOT...LOC 0954Z 185DEG 25KT 4511 10118

WISE

Special weather statement, Jul 23, 6:02 AM CDT, 1 hour 19 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ABERDEEN SD
602 AM CDT SAT JUL 23 2016

SDZ015-033-034-231145-
SULLY SD-DEWEY SD-STANLEY SD-
602 AM CDT SAT JUL 23 2016

...SIGNIFICANT WEATHER ADVISORY FOR WEST CENTRAL SULLY...NORTH
CENTRAL STANLEY AND CENTRAL DEWEY COUNTIES UNTIL 645 AM CDT/545 AM
MDT/...

AT 602 AM CDT/502 AM MDT/...DOPPLER RADAR WAS TRACKING A STRONG
THUNDERSTORM NEAR RIDGEVIEW...OR 22 MILES EAST OF EAGLE
BUTTE...MOVING NORTHEAST AT 20 MPH.

DIME SIZE HAIL AND WINDS IN EXCESS OF 30 MPH WILL BE POSSIBLE WITH
THIS STORM.

LOCATIONS IMPACTED INCLUDE...
WHITE HORSE...MISSION RIDGE...RIDGEVIEW...LAKE OAHE...TIOSPAYE TOPA
SCHOOL...LAPLANT AND PARADE.

LAT...LON 4542 10098 4516 10037 4467 10076 4478 10114
      4499 10114 4499 10121
TIME...MOT...LOC 1102Z 212DEG 19KT 4505 10078

WISE

Special weather statement, Jul 23, 7:06 AM CDT, 15 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ABERDEEN SD
706 AM CDT SAT JUL 23 2016

SDZ011-020>023-231245-
GRANT SD-CODINGTON SD-HAMLIN SD-DEUEL SD-DAY SD-
706 AM CDT SAT JUL 23 2016

...SIGNIFICANT WEATHER ADVISORY FOR DEUEL...GRANT...CODINGTON...
SOUTHEASTERN DAY AND CENTRAL HAMLIN COUNTIES UNTIL 745 AM CDT...

AT 706 AM CDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM
NEAR PELICAN LAKE...OR 7 MILES SOUTH OF WATERTOWN...MOVING NORTH AT
50 MPH.

NICKEL SIZE HAIL AND WINDS IN EXCESS OF 30 MPH WILL BE POSSIBLE WITH
THIS STORM.

LOCATIONS IMPACTED INCLUDE...
WATERTOWN...CLEAR LAKE...CASTLEWOOD...HAYTI...FLORENCE...RAUVILLE...
SOUTH SHORE...TORONTO...WAVERLY...KRANZBURG...GOODWIN...REVILLO...
STOCKHOLM...BRANDT...STRANDBURG...TWIN BROOKS...LA BOLT...TROY...
ALTAMONT AND ALBEE.

LAT...LON 4456 9647 4463 9736 4528 9732 4518 9647
TIME...MOT...LOC 1206Z 184DEG 42KT 4481 9712

WISE

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 22, 7:13 PM CDT	Severe Thunderstorm Warning	ABR	Corson, Dewey	47 min
Jul 23, 12:33 AM CDT	Severe Thunderstorm Warning	ABR	Jones, Stanley	42 min
Jul 23, 1:15 AM CDT	Severe Thunderstorm Warning	ABR	Jones, Stanley	15 min
Jul 23, 4:55 AM CDT	Special Weather Statement	ABR	Dewey	50 min
Jul 23, 5:00 AM CDT	Severe Thunderstorm Warning	ABR	Corson, Dewey, Stanley	23 min
Jul 23, 6:02 AM CDT	Special Weather Statement	ABR	Dewey	43 min
Jul 23, 6:10 AM CDT	Severe Thunderstorm Warning	ABR	Dewey, Stanley, Sully	17 min
Jul 23, 6:33 AM CDT	Severe Thunderstorm Warning	ABR	Dewey, Potter, Stanley, Sully	28 min
Jul 23, 7:06 AM CDT	Special Weather Statement	ABR	Codington, Deuel, Grant, Hamlin	39 min
Jul 23, 7:40 AM CDT	Special Weather Statement	ABR	Sully	50 min

Nearby

Severe Thunderstorm Warnings in South Dakota, 2016 Every severe thunderstorm 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.