414
FNUS73 KABR 271259
FWSABR
SPOT FORECAST FOR BLACK SLOUGH GPA RX...STATE OF SOUTH DAKOTA
NATIONAL WEATHER SERVICE ABERDEEN SD
759 AM CDT WED MAY 27 2026
FORECAST IS BASED ON IGNITION TIME OF 0800 CDT ON MAY 27.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.
DISCUSSION
A STRAY LIGHT SHOWER IS STILL POSSIBLE THROUGH THE
MID MORNING HOURS. ISOLATED THUNDERSHOWERS ARE POSSIBLE AGAIN
LATE THIS AFTERNOON OVER PORTIONS OF NORTHEASTERN SD, ALTHOUGH
COVERAGE LOOKS TO BE VERY SPOTTY AT BEST. WINDS WILL BE LIGHT AND
VARIABLE THROUGH MID MORNING THEN BECOME SOUTH-SOUTHEAST TO
EASTERLY BY LATE MORNING THROUGH THIS AFTERNOON. ALTHOUGH, WITH
WEAK FLOW IN THE LOWER LEVELS, WIND DIRECTION MAY ACTUALLY VARY AT
TIMES THROUGH THE DAY. MINIMUM RELATIVE HUMIDITY VALUES WILL
BOTTOM OUT AROUND 35 PERCENT AS TEMPERATURES WARM TO AROUND 90
DEGREES THIS AFTERNOON.
REST OF TODAY
SKY/WEATHER.........PARTLY SUNNY (30-40 PERCENT). SCATTERED SHOWERS
AND THUNDERSTORMS EARLY IN THE MORNING.
CWR.................6 PERCENT.
CHANCE OF PCPN......30 PERCENT.
CHANCE OF LIGHTNING.27 PERCENT.
MAX TEMPERATURE.....AROUND 89.
MIN HUMIDITY........38 PERCENT.
WIND (20 FT)........LIGHT WINDS BECOMING SOUTHEAST 6 TO 7 MPH EARLY
IN THE AFTERNOON, THEN SHIFTING TO THE EAST 7
TO 8 MPH LATE IN THE AFTERNOON. GUSTY AND
ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS EARLY
IN THE MORNING.
MIXING HEIGHT.......600-6300 FT AGL.
TRANSPORT WINDS.....SOUTH 8 TO 12 MPH SHIFTING TO THE EAST 7 TO 8
MPH IN THE AFTERNOON.
SMOKE DISPERSAL.....POOR (5700 KNOT-FT) EARLY IN THE MORNING
INCREASING TO FAIR (44000 KNOT-FT) IN THE
AFTERNOON.
TIME (CDT) 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........52 41 35 31 27 36 33 26 16 18
WEATHER COV.....SCT SCT
WEATHER TYPE....RW RW
TSTM COV........SCT SCT
CHC OF PCPN (%).30 30 0 0 0 0 10 10 10 10
CHC OF LTNG (%).30 30 0 0 0 0 10 10 10 10
TEMP............75 79 82 82 81 82 85 86 87 88
RH..............54 49 43 43 49 47 43 42 39 38
20 FT WIND DIR..VRB VRB VRB VRB S SE E E E E
20 FT WIND SPD..2 0 0 2 6 7 7 8 8 8
20 FT WIND GUST.6 3 3 7 12 13 13 14 14 14
MIX HGT (KFT)...0.6 0.8 1.1 1.9 3.1 4.8 6.0 6.2 6.3 6.1
SMOKE DISPERSAL.PR PR PR PR PR PR PR FR FR FR
TONIGHT
SKY/WEATHER.........MOSTLY CLEAR (20-30 PERCENT). SLIGHT CHANCE OF
SHOWERS AND THUNDERSTORMS EARLY IN THE EVENING.
CWR.................2 PERCENT.
CHANCE OF PCPN......20 PERCENT.
CHANCE OF LIGHTNING.15 PERCENT.
MIN TEMPERATURE.....AROUND 61.
MAX HUMIDITY........81 PERCENT.
WIND (20 FT)........SOUTHEAST WINDS 8 TO 16 MPH. GUSTY AND ERRATIC
WINDS EXPECTED NEAR THUNDERSTORMS EARLY IN THE
EVENING.
MIXING HEIGHT.......400-4400 FT AGL.
TRANSPORT WINDS.....EAST 8 TO 17 MPH SHIFTING TO THE SOUTHEAST 20
TO 21 MPH OVERNIGHT.
SMOKE DISPERSAL.....POOR (4000 KNOT-FT).
TIME (CDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........24 22 36 27 34 30 14 20 30 28 29 26
WEATHER COV.....SCH SCH SCH SCH
WEATHER TYPE....RW RW RW RW
TSTM COV........SCH SCH SCH SCH
CHC OF PCPN (%).20 20 20 20 10 0 0 0 0 0 0 0
CHC OF LTNG (%).20 20 20 20 10 0 0 0 0 0 0 0
TEMP............87 86 83 75 72 70 70 68 66 65 63 63
RH..............38 40 46 58 61 66 66 70 73 75 78 78
20 FT WIND DIR..E E E E SE E SE SE SE SE SE SE
20 FT WIND SPD..8 9 9 9 10 12 13 14 15 15 16 16
20 FT WIND GUST.15 15 15 16 17 20 22 24 25 25 26 26
MIX HGT (KFT)...4.4 2.2 0.6 0.4 0.4 0.5 0.5 0.5 0.5 0.5 0.5 0.5
SMOKE DISPERSAL.PR PR PR PR PR PR PR PR PR PR PR PR
THURSDAY
SKY/WEATHER.........MOSTLY SUNNY (10-20 PERCENT).
CWR.................2 PERCENT.
CHANCE OF PCPN......10 PERCENT.
CHANCE OF LIGHTNING.5 PERCENT.
MAX TEMPERATURE.....AROUND 88.
MIN HUMIDITY........35 PERCENT.
WIND (20 FT)........SOUTHEAST WINDS 14 TO 17 MPH.
MIXING HEIGHT.......500-8900 FT AGL.
TRANSPORT WINDS.....SOUTH 16 TO 20 MPH.
SMOKE DISPERSAL.....POOR (7900 KNOT-FT) EARLY IN THE MORNING
INCREASING TO FAIR (40600 KNOT-FT) IN THE
AFTERNOON INCREASING TO FAIR (57400 KNOT-FT)
EARLY IN THE MORNING INCREASING TO GOOD (72700
KNOT-FT) IN THE AFTERNOON EARLY IN THE
AFTERNOON, THEN INCREASING TO VERY GOOD (106000
KNOT-FT) LATE IN THE AFTERNOON DECREASING TO
FAIR (55300 KNOT-FT) LATE IN THE AFTERNOON.
TIME (CDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........23 31 10 5 6 5 3 2 10 16 25 30
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CHC OF PCPN (%).0 0 0 0 0 10 10 10 10 10 10 10
CHC OF LTNG (%).0 0 0 0 0 0 0 10 10 10 10 10
TEMP............61 63 66 69 75 78 81 83 86 86 86 88
RH..............81 75 70 66 56 52 47 44 40 39 39 35
20 FT WIND DIR..SE SE SE SE SE SE SE S SE SE SE SE
20 FT WIND SPD..16 17 16 15 15 14 14 14 14 14 14 14
20 FT WIND GUST.26 26 25 24 24 23 23 23 23 24 24 24
MIX HGT (KFT)...0.5 0.5 0.7 1.1 1.5 2.9 4.1 4.8 7.6 8.9 7.1 3.7
SMOKE DISPERSAL.PR PR PR PR PR FR FR GD VGD VGD VGD FR
FORECASTER...VIPOND
REQUESTED BY...PATRICK TATE
TYPE OF REQUEST...PRESCRIBED
.TAG 2614541.0/ABR
.DELDT 05/27/26
.FORMATTERVERSION 2.0.0
.EMAIL PATRICK.TATE@STATE.SD.US
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page