Special Weather Statement, NWS Aberdeen, SD

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
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

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

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

0140 PM     TSTM WND GST     7 N FREDERICK           45.93N 98.53W
07/26/2016  M70 MPH          BROWN              SD   MESONET

            .

&&

NWS ABERDEEN SD
IRIS SYSTEM

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

SDZ018-037-262000-
SPINK SD-HAND SD-
210 PM CDT TUE JUL 26 2016

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN SPINK AND
NORTHEASTERN HAND COUNTIES UNTIL 300 PM CDT...

AT 210 PM CDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM
NEAR BURDETTE...OR 9 MILES NORTHEAST OF MILLER...MOVING SOUTHEAST AT
10 MPH.

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

LOCATIONS IMPACTED INCLUDE...
BURDETTE...SPOTTSWOOD AND VAYLAND.

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 4460 9906 4480 9894 4470 9846 4463 9851
      4463 9871 4443 9871
TIME...MOT...LOC 1910Z 298DEG 10KT 4464 9891

SRF

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

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

0240 PM     HEAVY RAIN       2 SW SPRING CREEK COLON 45.89N 98.91W
07/26/2016  M3.80 INCH       MCPHERSON          SD   PUBLIC

            RAINFALL SINCE 6 AM. CREEKS ARE RUNNING HIGH
            BUT NOT CAUSING ANY ISSUES.

&&

SRF

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

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
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