138
FNUS73 KABR 170946
FWSABR
SPOT FORECAST FOR SPRING LAKE WPA...US FISH AND WILDLIFE SERVICE
NATIONAL WEATHER SERVICE ABERDEEN SD
446 AM CDT MON MAY 17 2021
FORECAST IS BASED ON A STARTING TIME OF 0900 CDT ON MAY 17.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE IN ABERDEEN SD.
DISCUSSION
A RIDGE OF HIGH PRESSURE WILL DEPART THE AREA TODAY, ALLOWING THE
LIGHT SOUTHEASTERLY WINDS AROUND DAYBREAK TO INCREASE THROUGH THE
MORNING HOURS. THE SOUTHEASTERLY WIND DIRECTION WILL BE PRETTY
STEADY THROUGH TOMORROW, WITH SIMILAR AFTERNOON GUSTS BOTH DAYS.
AFTER A LITTLE BIT OF PATCHY GROUND FOG THIS MORNING, DAYTIME MIXING
SHOULD LEAD TO FALLING RH VALUES, WITH MINIMUMS IN THE LOWER 30S
THIS AFTERNOON. HIGH CLOUDS WILL MOVE OVER THE AREA AT TIMES THIS
MORNING AND THEN EXPECT A FEW DAYTIME CUMULUS CLOUDS THIS
AFTERNOON. INCREASING LOW LEVEL MOISTURE TOMORROW WILL LEAD TO
HIGHER RH VALUES THAN SEEN TODAY.
REST OF TODAY
SKY/WEATHER.........MOSTLY SUNNY (30-40 PERCENT CLOUD).
CWR.................0 PERCENT.
LAL.................1.
MAX TEMPERATURE.....74-79.
MIN HUMIDITY........32-37 PERCENT.
WIND (20 FT)........SOUTHEAST WINDS 10 TO 15 MPH. GUSTS UP TO 22
MPH LATE IN THE MORNING.
MIXING HEIGHT.......4200-5200 FT AGL.
TRANSPORT WINDS.....SOUTHEAST 5 TO 10 MPH INCREASING TO 16 TO 22
MPH IN THE AFTERNOON.
SMOKE DISPERSAL.....POOR (6600-99900).
HAINES INDEX........4 OR (LOW).
TIME (CDT) 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........47 46 40 33 27 33 38 44 40
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
TEMP............56 60 64 68 71 73 75 76 76
RH..............83 75 63 52 47 41 37 34 36
20 FT WIND DIR..SE SE SE SE SE SE SE SE SE
20 FT WIND SPD..10 13 14 15 15 15 15 15 15
20 FT WIND GUST.15 17 20 21 22 22 22 22 22
TONIGHT
SKY/WEATHER.........PARTLY CLOUDY (35-45 PERCENT CLOUD) THEN
BECOMING MOSTLY CLOUDY (50-60 PERCENT CLOUD).
CWR.................0 PERCENT.
LAL.................1.
MIN TEMPERATURE.....50-55.
MAX HUMIDITY........95-100 PERCENT.
WIND (20 FT)........SOUTHEAST WINDS 8 TO 15 MPH. GUSTS UP TO 21 MPH
EARLY IN THE EVENING.
MIXING HEIGHT.......700-1700 FT AGL.
TRANSPORT WINDS.....SOUTHEAST 12 TO 21 MPH.
SMOKE DISPERSAL.....POOR (6000-81200).
HAINES INDEX........3 TO 4 OR (VERY LOW) TO (LOW).
TIME (CDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........37 33 35 36 38 39 39 40 45 51 56 59
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
TEMP............75 72 68 63 59 57 56 55 55 54 53 52
RH..............38 44 52 62 75 80 83 86 86 93 96 100
20 FT WIND DIR..SE SE SE SE SE SE SE SE SE SE SE SE
20 FT WIND SPD..15 14 13 10 9 9 9 9 9 8 8 8
20 FT WIND GUST.21 20 17 15 14 15 16 16 16 14 14 14
TUESDAY
SKY/WEATHER.........PARTLY SUNNY (55-65 PERCENT CLOUD). A SLIGHT
CHANCE OF SHOWERS IN THE AFTERNOON.
CWR.................0 PERCENT.
LAL.................1.
MAX TEMPERATURE.....72-77.
MIN HUMIDITY........48-53 PERCENT.
WIND (20 FT)........SOUTHEAST WINDS 8 TO 16 MPH. GUSTS UP TO 23 MPH
IN THE AFTERNOON.
MIXING HEIGHT.......2400-3400 FT AGL.
TRANSPORT WINDS.....SOUTH 13 TO 20 MPH.
SMOKE DISPERSAL.....POOR (8500-58000).
HAINES INDEX........3 OR (VERY LOW).
TIME (CDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........61 64 64 63 63 63 62 62 60 59 57 53
WEATHER COV..... SCH SCH SCH SCH SCH
WEATHER TYPE.... RW RW RW RW RW
TSTM COV........
TEMP............52 53 55 59 62 66 68 71 72 73 74 74
RH..............100 100 96 87 78 68 61 55 53 51 50 50
20 FT WIND DIR..SE SE SE SE S SE SE SE SE SE SE SE
20 FT WIND SPD..8 9 10 12 13 13 14 14 15 15 16 16
20 FT WIND GUST.14 15 16 17 17 17 20 20 21 21 23 23
FORECASTER...SRF
REQUESTED BY...SONYA FEASTER
TYPE OF REQUEST...PRESCRIBED
.TAG 2112681.0/ABR
.DELDT 05/17/21
.FORMATTERVERSION 1.0.26
.EMAIL SONYA_FEASTER@FWS.GOV
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