Alert archive / South Dakota / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 155, NWS Aberdeen, SD

July 26, 2016Lyman County, South Dakota

NWS Aberdeen, SD issued this severe thunderstorm warning at Jul 26, 2016, 6:11 PM CDT for Lyman County, South Dakota. It was in force for 49 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Jul 26, 2016, 6:11 PM CDT (23:11 UTC)
Expired: Jul 26, 2016, 7:00 PM CDT
In force: 49 min
Issued by: NWS Aberdeen, SD
Area: Storm-based polygon
Hail: 1.5 in
Wind: 60.0 mph

County Lyman County, SD

The radar

The North Platte radar (KLNX), 208 km from the middle of the area, began a volume at 23:13 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.

What was reported inside it

Time	Report	Where	Remark
Jul 26, 6:29 PM CDT	HAIL 1	5 N Presho, SD	.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

Did it verify

Verified. The Iowa Environmental Mesonet's Cow matched one storm report to this severe thunderstorm warning; the first came 18 minutes after it went out.

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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jul 26, 6:05 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Aberdeen, SD (KABR), launched 12:00Z, 11.2 hours before the alert went out and 172 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: 488 J/kg
Mixed-layer CIN: -298 J/kg
Mixed-layer LCL: 1099 m above ground
0-6 km bulk shear: 20 kt
0-1 km storm-relative helicity: 45 m²/s²
0-3 km storm-relative helicity: -9 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

913 
WUUS53 KABR 262311
SVRABR
SDC085-270000-
/O.NEW.KABR.SV.W.0155.160726T2311Z-160727T0000Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ABERDEEN SD
611 PM CDT TUE JUL 26 2016

THE NATIONAL WEATHER SERVICE IN ABERDEEN HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CENTRAL LYMAN COUNTY IN CENTRAL SOUTH DAKOTA...

* UNTIL 700 PM CDT

* AT 610 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR
  KENNEBEC...OR NEAR PRESHO...MOVING EAST AT 15 MPH.

  HAZARD...PING PONG BALL SIZE HAIL AND 60 MPH WIND GUSTS. 

  SOURCE...TRAINED WEATHER SPOTTERS. AT 535 PM CDT...GOLF BALL
           SIZED HAIL WAS REPORTED 3 MILES NORTH OF PRESHO. 

  IMPACT...PEOPLE AND ANIMALS OUTDOORS WILL BE INJURED. EXPECT HAIL 
           DAMAGE TO ROOFS...SIDING...WINDOWS...AND VEHICLES. EXPECT 
           WIND DAMAGE TO ROOFS...SIDING...AND TREES. 

* THIS SEVERE THUNDERSTORM WILL BE NEAR...
  BYRE LAKE AROUND 620 PM CDT. 
  KENNEBEC AROUND 625 PM CDT. 
  LYMAN AROUND 650 PM CDT. 
  RELIANCE AROUND 700 PM CDT. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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

&&

LAT...LON 4370 9990 4369 9998 4371 10002 4369 10012
      4370 10014 4388 10025 4404 10009 4388 9953
      4374 9964 4376 9964 4377 9965 4373 9967
      4376 9969 4373 9972 4374 9976 4371 9975
      4369 9984 4370 9986 4367 9987
TIME...MOT...LOC 2310Z 291DEG 13KT 4390 9993 

HAIL...1.50IN
WIND...60MPH
 
$$

SRF

2 follow-up statements

352 
WWUS53 KABR 262327
SVSABR

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ABERDEEN SD
627 PM CDT TUE JUL 26 2016

SDC085-270000-
/O.CON.KABR.SV.W.0155.000000T0000Z-160727T0000Z/
LYMAN SD-
627 PM CDT TUE JUL 26 2016

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 700 PM CDT
FOR CENTRAL LYMAN COUNTY...

AT 626 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED 9 MILES SOUTH OF
KENNEBEC...OR 13 MILES SOUTHEAST OF PRESHO...MOVING EAST AT 15 MPH.

HAZARD...PING PONG BALL SIZE HAIL AND 60 MPH WIND GUSTS. 

SOURCE...TRAINED WEATHER SPOTTERS. 

IMPACT...PEOPLE AND ANIMALS OUTDOORS WILL BE INJURED. EXPECT HAIL
         DAMAGE TO ROOFS...SIDING...WINDOWS...AND VEHICLES. EXPECT
         WIND DAMAGE TO ROOFS...SIDING...AND TREES. 

THIS SEVERE THUNDERSTORM WILL REMAIN OVER MAINLY RURAL AREAS OF
CENTRAL LYMAN COUNTY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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

&&

LAT...LON 4370 9990 4369 9998 4371 10002 4369 10012
      4370 10014 4388 10025 4404 10009 4388 9953
      4374 9964 4376 9964 4377 9965 4373 9967
      4376 9969 4373 9972 4374 9976 4371 9975
      4369 9984 4370 9986 4367 9987
TIME...MOT...LOC 2326Z 276DEG 13KT 4377 9985 

HAIL...1.50IN
WIND...60MPH
 
$$

SRF

489 
WWUS53 KABR 262346
SVSABR

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ABERDEEN SD
646 PM CDT TUE JUL 26 2016

SDC085-270000-
/O.CON.KABR.SV.W.0155.000000T0000Z-160727T0000Z/
LYMAN SD-
646 PM CDT TUE JUL 26 2016

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 700 PM CDT
FOR CENTRAL LYMAN COUNTY...

AT 646 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED 9 MILES SOUTH OF
LYMAN...OR 18 MILES SOUTHEAST OF PRESHO...MOVING EAST AT 15 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 REMAIN OVER MAINLY RURAL AREAS OF
CENTRAL LYMAN COUNTY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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

&&

LAT...LON 4370 9990 4369 9998 4371 10002 4379 9999
      4387 9985 4384 9956 4374 9964 4376 9964
      4377 9965 4373 9967 4376 9969 4373 9972
      4374 9976 4371 9975 4369 9984 4370 9986
      4367 9987
TIME...MOT...LOC 2346Z 291DEG 13KT 4374 9976 

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

SRF

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 26, 3:37 PM CDT, 2 hours 34 minutes earlier.

Area forecast discussion, Jul 26, 3:37 PM CDT, 2 hours 34 minutes before

Area Forecast Discussion
National Weather Service Aberdeen SD
337 PM CDT TUE JUL 26 2016

.SHORT TERM...(This Evening through Thursday Afternoon)
Issued at 337 PM CDT TUE JUL 26 2016

Scattered showers and storms have brought some decent rainfall
mainly to areas along and in the James Valley from this morning into
the afternoon. The clouds and rain with this have also kept
temperatures in check across this region. Several outflow boundaries
along with a frontal zone extending across our northwest cwa and
across southern nd and upper level short wave lift have been
responsible for this convection. Despite all of the convection, there
is still plenty of deep instability across the region along with
decent wind shear west and south in our region. Thus, with the
frontal boundary to our north sinking south through the region
tonight and Wednesday along with some upper short waves moving over,
expect showers and storms to continue in the east with new shower
and storm development farther west. Thus, will continue with high
pops across the region tonight into Wednesday afternoon.

Surface high pressure and drier air will then push into the region
for Wednesday night and Thursday as Canadian air moves in. Thursday
should be mainly a mostly sunny day with dry conditions. Both
Wednesday and Thursday should have below normal temperatures with
highs in the mid 70s to the lower 80s.

.LONG TERM...(Thursday Evening through Tuesday)
Issued at 337 PM CDT TUE JUL 26 2016

The long term portion of the forecast begins with a surface high
pressure over the region with northwesterly flow aloft. The high
pressure will keep most of the CWA dry through Friday afternoon. A
surface low pressure system and upper level shortwave will slowly
cross the region Friday afternoon through Sunday morning with
several rounds of storms possible. With limited temperature
advection and partly cloudy skies, temperatures through the first
half of the extended will average below normal. Upper level ridging
and WAA will develop on Sunday with temperatures climbing above
normal for most locations. Warmer temps are expected Monday and
Tuesday.

&&

.AVIATION...(For the 18Z TAFS through 18Z Wednesday Afternoon)
Issued at 1250 PM CDT TUE JUL 26 2016

An area of low pressure crossing the region will being showers and
thunderstorms to all terminals through this evening. Some
thunderstorms could be strong with torrential rainfall and small
hail possible. Brief periods of MVFR/IFR visibilities are possible
with the stronger storms. MVFR cigs will be possible Wednesday
morning behind the low pressure system.

&&

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

SHORT TERM...Mohr
LONG TERM...SD
AVIATION...SD

Hazardous weather outlook, Jul 26, 3:47 AM CDT, 14 hours 24 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE ABERDEEN SD
347 AM CDT TUE JUL 26 2016

MNZ039-046-SDZ003>011-015>023-033>037-045-048-051-271100-
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-
347 AM CDT TUE JUL 26 2016 /247 AM MDT TUE JUL 26 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

THUNDERSTORMS ARE POSSIBLE. THERE IS THE POTENTIAL FOR SOME
STORMS TO BECOME STRONG TO SEVERE...ESPECIALLY LATE THIS AFTERNOON
THROUGH THIS EVENING. HAIL AND GUSTY WINDS WILL BE THE PRIMARY
THREAT.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED LATE THIS AFTERNOON THROUGH THIS
EVENING.

KF

In the hours before

Local storm report, Jul 26, 3:29 PM CDT, 2 hours 42 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ABERDEEN SD
329 PM CDT TUE JUL 26 2016

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

0320 PM     HEAVY RAIN       8 N SAINT LAWRENCE      44.63N 98.94W
07/26/2016  M4.50 INCH       HAND               SD   EMERGENCY MNGR

            RAINFALL FROM AFTERNOON STORM. PONDING OF
            WATER LEADING TO SOME MINOR FLOODING.

&&

RV

Local storm report, Jul 26, 4:06 PM CDT, 2 hours 5 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ABERDEEN SD
406 PM CDT TUE JUL 26 2016

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

0355 PM     HEAVY RAIN       6 S BURDETTE            44.61N 98.81W
07/26/2016  M3.23 INCH       HAND               SD   PUBLIC

            RAINFALL FROM AFTERNOON STORM. RAIN SOAKED
            INTO THE GROUND...NO FLOODING OCCURRING.

&&

RV

Special weather statement, Jul 26, 5:01 PM CDT, 1 hour 10 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ABERDEEN SD
501 PM CDT TUE JUL 26 2016

SDZ048-051-262300-
LYMAN SD-BUFFALO SD-
501 PM CDT TUE JUL 26 2016

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN BUFFALO AND
NORTHEASTERN LYMAN COUNTIES UNTIL 600 PM CDT...

AT 500 PM CDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM NEAR
COUNSELOR CREEK BOAT ACCESS AREA...OR 7 MILES SOUTHWEST OF FORT
THOMPSON...MOVING EAST AT 15 MPH.

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

LOCATIONS IMPACTED INCLUDE...
FORT THOMPSON...TAILRACE REC AREA...LEES CORNER...
COUNSELOR CREEK BOAT ACCESS AREA...
CROW CREEK HOUSING AND LAKE FRANCIS CASE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4388 9958 4407 9957 4412 9918 4393 9921
      4393 9935 4390 9936 4387 9931 4382 9934
TIME...MOT...LOC 2200Z 273DEG 15KT 4398 9952

DORN

Special weather statement, Jul 26, 5:35 PM CDT, 36 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ABERDEEN SD
435 PM MDT TUE JUL 26 2016

SDZ033-262300-
STANLEY SD-
435 PM MDT TUE JUL 26 2016

...SIGNIFICANT WEATHER ADVISORY FOR WEST CENTRAL STANLEY COUNTY UNTIL
500 PM MDT...

AT 434 PM MDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM NEAR
SANSARC...OR 34 MILES SOUTH OF EAGLE BUTTE...MOVING NORTHEAST AT 20
MPH.

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

LOCATIONS IMPACTED INCLUDE...
SANSARC.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4440 10115 4461 10115 4465 10106 4443 10089
      4438 10116
TIME...MOT...LOC 2234Z 242DEG 17KT 4450 10115

SRF

Local storm report, Jul 26, 6:01 PM CDT, 10 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ABERDEEN SD
601 PM CDT TUE JUL 26 2016

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

0535 PM     HAIL             3 N PRESHO              43.95N 100.06W
07/26/2016  E1.75 INCH       LYMAN              SD   PUBLIC

            .

&&

KS

Special weather statement, Jul 26, 6:01 PM CDT, 10 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ABERDEEN SD
501 PM MDT TUE JUL 26 2016

SDZ033-262345-
STANLEY SD-
501 PM MDT TUE JUL 26 2016

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN STANLEY COUNTY UNTIL
545 PM MDT...

AT 500 PM MDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM NEAR
SANSARC...OR 32 MILES SOUTH OF EAGLE BUTTE...MOVING NORTHEAST AT 20
MPH.

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

LOCATIONS IMPACTED INCLUDE...
BROWN CHURCH AND SANSARC.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4453 10115 4461 10116 4475 10092 4445 10071
      4437 10108 4446 10116
TIME...MOT...LOC 2300Z 231DEG 18KT 4455 10108

SRF

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 26, 12:55 AM CDT	Special Weather Statement	ABR	Campbell	65 min
Jul 26, 2:19 AM CDT	Special Weather Statement	ABR	Campbell, McPherson	56 min
Jul 26, 6:38 AM CDT	Special Weather Statement	ABR	McPherson	52 min
Jul 26, 6:40 AM CDT	Severe Thunderstorm Warning	ABR	McPherson	17 min
Jul 26, 7:10 AM CDT	Special Weather Statement	ABR	McPherson	50 min
Jul 26, 8:50 AM CDT	Special Weather Statement	ABR	Brown	25 min
Jul 26, 8:59 AM CDT	Special Weather Statement	ABR	McPherson	46 min
Jul 26, 9:47 AM CDT	Special Weather Statement	ABR	McPherson	43 min
Jul 26, 9:53 AM CDT	Severe Thunderstorm Warning	ABR	McPherson	37 min
Jul 26, 10:56 AM CDT	Severe Thunderstorm Warning	ABR	Brown, Clark, Day, Spink	20 min
Jul 26, 12:02 PM CDT	Special Weather Statement	ABR	Edmunds	43 min
Jul 26, 12:25 PM CDT	Special Weather Statement	ABR	Spink	50 min
Jul 26, 12:51 PM CDT	Special Weather Statement	ABR	Spink	39 min
Jul 26, 1:02 PM CDT	Special Weather Statement	ABR	Clark	43 min
Jul 26, 2:10 PM CDT	Special Weather Statement	ABR	Hand	50 min
Jul 26, 5:01 PM CDT	Special Weather Statement	ABR	Buffalo	59 min
Jul 26, 5:12 PM CDT	Flash Flood Warning	ABR	Buffalo, Lyman	3 hr
Jul 26, 5:19 PM CDT	Severe Thunderstorm Warning	ABR	Lyman	56 min
Jul 26, 5:35 PM CDT	Special Weather Statement	ABR	Stanley	25 min
Jul 26, 6:01 PM CDT	Special Weather Statement	ABR	Stanley	44 min
Jul 26, 6:29 PM CDT	Special Weather Statement	ABR	Stanley	46 min
Jul 26, 6:33 PM CDT	Special Weather Statement	ABR	Jones	42 min
Jul 26, 6:43 PM CDT	Severe Thunderstorm Warning	ABR	Jones	47 min
Jul 26, 6:51 PM CDT	Special Weather Statement	ABR	Lyman	39 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.