Alert archive / South Dakota / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 152, NWS Aberdeen, SD

July 26, 2016McPherson County, South Dakota

NWS Aberdeen, SD issued this severe thunderstorm warning at Jul 26, 2016, 9:53 AM CDT for McPherson County, South Dakota. It was in force for 37 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, 9:53 AM CDT (14:53 UTC)
Expired: Jul 26, 2016, 10:30 AM CDT
In force: 37 min
Issued by: NWS Aberdeen, SD
Area: Storm-based polygon
Hail: 1.0 in
Wind: 50.0 mph

County McPherson County, SD

The radar

The Aberdeen radar (KABR), 55 km from the middle of the area, began a volume at 14:52 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, 9:55 AM CDT	HAIL 1	5 Wnw Spring Creek Colo, SD	LOTS OF NICKEL HAIL WITH SOME AS LARGE AS QUARTERS. .

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 2 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 nearest sounding before it

Aberdeen, SD (KABR), launched 12:00Z, 2.9 hours before the alert went out and 109 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.

736 
WUUS53 KABR 261453
SVRABR
SDC089-261530-
/O.NEW.KABR.SV.W.0152.160726T1453Z-160726T1530Z/

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

THE NATIONAL WEATHER SERVICE IN ABERDEEN HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EASTERN MCPHERSON COUNTY IN NORTH CENTRAL SOUTH DAKOTA...

* UNTIL 1030 AM CDT

* AT 952 AM CDT...A SEVERE THUNDERSTORM WAS LOCATED 7 MILES WEST OF
  SPRING CREEK COLONY...OR 19 MILES SOUTHEAST OF ASHLEY...MOVING
  SOUTHEAST AT 25 MPH.

  HAZARD...QUARTER SIZE HAIL. 

  SOURCE...RADAR INDICATED. 

  IMPACT...DAMAGE TO VEHICLES IS EXPECTED. 

* THIS SEVERE THUNDERSTORM WILL BE NEAR...
  LEOLA AROUND 1015 AM 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 4579 9872 4578 9873 4563 9887 4586 9919
      4594 9908 4594 9894
TIME...MOT...LOC 1452Z 312DEG 22KT 4588 9902 

HAIL...1.00IN
WIND...<50MPH
 
$$

SD

2 follow-up statements

688 
WWUS53 KABR 261509
SVSABR

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ABERDEEN SD
1009 AM CDT TUE JUL 26 2016

SDC089-261530-
/O.CON.KABR.SV.W.0152.000000T0000Z-160726T1530Z/
MCPHERSON SD-
1009 AM CDT TUE JUL 26 2016

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1030 AM CDT
FOR NORTHEASTERN MCPHERSON COUNTY...

AT 1008 AM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR SPRING CREEK
COLONY...OR 23 MILES SOUTHEAST OF ASHLEY...MOVING SOUTHEAST AT 25
MPH.

HAZARD...QUARTER SIZE HAIL. 

SOURCE...TRAINED WEATHER SPOTTERS. AT 955 AM CDT...QUARTER SIZE HAIL
         WAS REPORTED 5 MILES WNW SPRING CREEK COLONY. 

IMPACT...DAMAGE TO VEHICLES IS EXPECTED. 

THIS SEVERE THUNDERSTORM WILL REMAIN OVER MAINLY RURAL AREAS OF
NORTHEASTERN MCPHERSON 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 4579 9872 4569 9882 4588 9916 4594 9908
      4594 9894
TIME...MOT...LOC 1508Z 297DEG 20KT 4584 9898 

HAIL...1.00IN
WIND...<50MPH
 
$$

SD

028 
WWUS53 KABR 261529
SVSABR

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ABERDEEN SD
1029 AM CDT TUE JUL 26 2016

SDC089-261538-
/O.EXP.KABR.SV.W.0152.000000T0000Z-160726T1530Z/
MCPHERSON SD-
1029 AM CDT TUE JUL 26 2016

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN MCPHERSON COUNTY
WILL EXPIRE AT 1030 AM CDT...
                
THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSE AN IMMEDIATE THREAT TO LIFE OR PROPERTY.
THEREFORE...THE WARNING WILL BE ALLOWED TO EXPIRE.  HOWEVER DIME
SIZE HAIL IS STILL POSSIBLE WITH THIS THUNDERSTORM.

LAT...LON 4579 9872 4569 9882 4588 9916 4594 9908
      4594 9894
TIME...MOT...LOC 1526Z 312DEG 22KT 4584 9898 

$$

SD

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, 6:29 AM CDT, 3 hours 24 minutes earlier.

Area forecast discussion, Jul 26, 6:29 AM CDT, 3 hours 24 minutes before

Area Forecast Discussion...UPDATED
National Weather Service Aberdeen SD
629 AM CDT TUE JUL 26 2016

.SHORT TERM...(Today through Thursday Afternoon)
Issued at 209 AM CDT TUE JUL 26 2016

Several small waves in the zonal to northwest flow aloft will help
enhance the sfc pattern throughout the short term. A sfc low will be
shifting into western SD this morning and over western NE this
afternoon. Initially watching a couple of cells over Campbell Co.
this morning, that at least the HRRR has picked up on. Utilized the
smaller scale/near-term solutions heavily for today, reducing pops
over the southeast. While the potential for showers and a few
thunderstorms will be possible, the best chance for stronger to
severe thunderstorms is expected along and west river, closer to the
sfc low and best shear. A sfc trough will extend northeast from the
low, into northeastern ND.

The east to west oriented cold front, extending from southern Hudson
Bay through central ND, will be slowly sinking into our area
tonight. This will keep at least some small mention of precip over
the area. The main concern will be the potential for an MCS to
develop to our west this afternoon, and shift moderate precip
tonight.

Dry high pressure across south central Canada will be slowly moving
in behind the frontal boundary Wednesday night-Thursday. Mainly dry
northeast winds will dominate the cwa from 18Z Wednesday through
Thursday. Highs both Wednesday and Thursday will top out in the
upper 70s to low 80s.

.LONG TERM...(Thursday Evening through Monday)
Issued at 209 AM CDT TUE JUL 26 2016

Northwest flow aloft will dominate until late Saturday when a ridge
begins to build in. A weak area of sfc low pressure will move off of
the Rockies Thu night through Saturday, bringing the potential for
showers and thunderstorms. Moisture and instability will be limited
as the upper ridge builds, so even though another low will move
through the Plains on Monday, precip is reduced to a slight chance.

Temperatures will rise through the extended. Highs will top out near
80 on Friday and then will climb into the 90s by the start of next
week.

&&

.AVIATION...(For the 12Z TAFS through 12Z Wednesday Morning)
Issued at 626 AM CDT TUE JUL 26 2016

An area of showers and thunderstorms along the ND/SD border will
move near KABR this morning from 12z to 15z. Then, a warm front
will drape itself across northern SD this afternoon, bringing
another round of showers and thunderstorms around 21z. A third
round will develop and move west to east starting closer to 00z.
VFR conditions are expected through this evening except in and
near stronger thunderstorms. MVFR cigs will move in and affect
KMBG and KABR toward the end of the valid period.

&&

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

SHORT TERM...KF
LONG TERM...Wise
AVIATION...Wise

Hazardous weather outlook, Jul 26, 3:47 AM CDT, 6 hours 6 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

Special weather statement, Jul 26, 6:38 AM CDT, 3 hours 15 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ABERDEEN SD
638 AM CDT TUE JUL 26 2016

SDZ005-261230-
MCPHERSON SD-
638 AM CDT TUE JUL 26 2016

...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN MCPHERSON COUNTY
UNTIL 730 AM CDT...

AT 638 AM CDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM NEAR
LONG LAKE...OR 18 MILES SOUTHEAST OF ASHLEY...MOVING EAST AT 10 MPH.

NICKEL SIZE HAIL AND WINDS IN EXCESS OF 40 MPH WILL BE POSSIBLE WITH
THIS STORM.

THIS STORM WILL REMAIN OVER MAINLY RURAL AREAS OF NORTHEASTERN
MCPHERSON COUNTY.

LAT...LON 4580 9921 4593 9916 4589 9889 4574 9896
TIME...MOT...LOC 1138Z 285DEG 10KT 4585 9910

WISE

Special weather statement, Jul 26, 7:10 AM CDT, 2 hours 43 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ABERDEEN SD
710 AM CDT TUE JUL 26 2016

SDZ005-006-261300-
MCPHERSON SD-BROWN SD-
710 AM CDT TUE JUL 26 2016

...SIGNIFICANT WEATHER ADVISORY FOR EASTERN MCPHERSON AND
NORTHWESTERN BROWN COUNTIES UNTIL 800 AM CDT...

AT 710 AM CDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM
NEAR GRASSLAND COLONY...OR 21 MILES SOUTHWEST OF ELLENDALE...MOVING
EAST AT 20 MPH.

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

LOCATIONS IMPACTED INCLUDE...
LEOLA...FREDERICK...WESTPORT...WETONKA...ELM LAKE...
GRASSLAND COLONY AND SPRING CREEK COLONY.

LAT...LON 4561 9850 4565 9917 4593 9919 4594 9850
TIME...MOT...LOC 1210Z 264DEG 19KT 4576 9881

WISE

Special weather statement, Jul 26, 8:50 AM CDT, 1 hour 3 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ABERDEEN SD
850 AM CDT TUE JUL 26 2016

SDZ006-011-018-261415-
SPINK SD-BROWN SD-DAY SD-
850 AM CDT TUE JUL 26 2016

...SIGNIFICANT WEATHER ADVISORY FOR NORTHERN SPINK...SOUTHEASTERN
BROWN AND WESTERN DAY COUNTIES UNTIL 915 AM CDT...

AT 850 AM CDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM NEAR
STRATFORD...OR 9 MILES SOUTHWEST OF GROTON...MOVING SOUTHEAST AT 30
MPH.

DIME SIZE HAIL WILL BE POSSIBLE WITH THIS STORM.

LOCATIONS IMPACTED INCLUDE...
STRATFORD...VERDON AND FERNEY.

LAT...LON 4536 9843 4550 9828 4536 9798 4520 9811
TIME...MOT...LOC 1350Z 304DEG 25KT 4539 9827

SD

Special weather statement, Jul 26, 8:59 AM CDT, 54 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ABERDEEN SD
859 AM CDT TUE JUL 26 2016

SDZ005-261445-
MCPHERSON SD-
859 AM CDT TUE JUL 26 2016

...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN MCPHERSON COUNTY
UNTIL 945 AM CDT...

AT 859 AM CDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM NEAR
LONG LAKE...OR 11 MILES SOUTHEAST OF ASHLEY...MOVING SOUTHEAST AT 30
MPH.

NICKEL SIZE HAIL WILL BE POSSIBLE WITH THIS STORM.

LOCATIONS IMPACTED INCLUDE...
FORBES...LONG LAKE AND SPRING CREEK COLONY.

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 4570 9898 4587 9939 4594 9932 4594 9873
TIME...MOT...LOC 1359Z 303DEG 25KT 4590 9923

SD

Local storm report, Jul 26, 9:00 AM CDT, 53 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ABERDEEN SD
900 AM CDT TUE JUL 26 2016

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

0645 AM     HAIL             7 ESE LONG LAKE         45.82N 99.07W
07/26/2016  E1.00 INCH       MCPHERSON          SD   TRAINED SPOTTER

            WAS MOSTLY NICKEL SIZED HAIL WITH SOME AS
            LARGE AS QUARTERS. THE HAIL WAS STILL ON THE
            GROUND AT 845 THIS MORNING. .

&&

KG

Special weather statement, Jul 26, 9:47 AM CDT, 6 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE ABERDEEN SD
947 AM CDT TUE JUL 26 2016

SDZ005-006-261530-
MCPHERSON SD-BROWN SD-
947 AM CDT TUE JUL 26 2016

...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN MCPHERSON AND
NORTHWESTERN BROWN COUNTIES UNTIL 1030 AM CDT...

AT 947 AM CDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 7
MILES EAST OF LONG LAKE...OR 18 MILES SOUTHEAST OF ASHLEY...MOVING
SOUTHEAST AT 25 MPH.

DIME SIZE HAIL WILL BE POSSIBLE WITH THIS STORM.

LOCATIONS IMPACTED INCLUDE...
LEOLA.

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 4581 9872 4566 9888 4588 9921 4594 9913
      4594 9895
TIME...MOT...LOC 1447Z 312DEG 22KT 4588 9906

SD

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, 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, 6:11 PM CDT	Severe Thunderstorm Warning	ABR	Lyman	49 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.