674
FGUS63 KKRF 261734
ESGLDT
LONG RANGE PROBABILISTIC OUTLOOK
NATIONAL WEATHER SERVICE
MISSOURI BASIN RIVER FORECAST CENTER PLEASANT HILL MO
1105 AM CDT TUE MAY 26 2026
IN TABLE 1 BELOW...THE CURRENT (CS) AND HISTORICAL (HS) OR NORMAL
PROBABILITIES OF EXCEEDING MINOR...MODERATE...AND MAJOR FLOOD STAGES
ARE LISTED FOR THE VALID TIME PERIOD.
CS VALUES INDICATE THE PROBABILITY OF REACHING A FLOOD CATEGORY
BASED ON CURRENT CONDITIONS.
HS VALUES INDICATE THE PROBABILITY OF REACHING A FLOOD CATEGORY
BASED ON HISTORICAL OR NORMAL CONDITIONS.
WHEN THE VALUE OF CS IS MORE THAN HS...THE PROBABILITY OF
EXCEEDING THAT LEVEL IS HIGHER THAN NORMAL. WHEN THE VALUE OF CS IS
LESS THAN HS...THE PROBABILITY OF EXCEEDING THAT LEVEL IS LOWER
THAN NORMAL.
:...TABLE 1--PROBABILITIES FOR MINOR...MODERATE AND MAJOR FLOODING...
VALID PERIOD: 05/31/2026 - 08/29/2026
: CURRENT AND HISTORICAL CHANCES
: OF EXCEEDING FLOOD CATEGORIES
: AS A PERCENTAGE(%)
CATEGORICAL :
FLOOD STAGES (FT) : MINOR MODERATE MAJOR
LOCATION MINOR MOD MAJOR : CS HS CS HS CS HS
-------- ----- ----- ----- : ---- ---- ---- ---- ---- ----
:BAD R AT MIDLAND SD
MIDS2 21.0 24.0 25.0 <5 17 <5 <5 <5 <5
:BAD R AT FT PIERRE SD 3S
FTPS2 21.0 25.0 27.0 <5 7 <5 <5 <5 <5
:WHITE R AT KADOKA SD 6S
KDKS2 15.0 16.0 19.0 5 31 <5 27 <5 8
:WHITE R AT WHITE RIVER SD 11N
WHRS2 14.0 15.0 17.0 6 33 5 22 <5 12
:WHITE R AT OACOMA SD 9SW
OACS2 15.0 20.0 25.0 16 53 <5 16 <5 <5
:NIOBRARA R AT SPARKS NE 7SW
SPKN1 6.0 10.0 12.0 <5 <5 <5 <5 <5 <5
:NIOBRARA R AT VERDEL NE 6S
VRDN1 8.0 9.5 13.0 <5 <5 <5 <5 <5 <5
:PONCA CR AT VERDEL NE
VERN1 13.5 15.0 17.0 <5 17 <5 8 <5 <5
LEGEND
CS = CONDITIONAL SIMULATION (CURRENT OUTLOOK)
HS = HISTORICAL SIMULATION
FT = FEET
IN TABLE 2 BELOW...THE 95 THROUGH 5 PERCENT COLUMNS INDICATE THE
PROBABILITY OF EXCEEDING THE LISTED STAGE LEVELS FOR THE VALID TIME
PERIOD.
:...TABLE 2--EXCEEDANCE PROBABILITIES...
.B KRF 20260531 Z DH12 /DC2605261105/DVD90/HGVFZXT/HGVFZX9/HGVFZXH
.B1 /HGVFZX5/HGVFZXG/HGVFZX1/HGVFZXF
: CHANCE OF EXCEEDING STAGES AT SPECIFIC LOCATIONS
: VALID PERIOD = 05/31/2026 - 08/29/2026
: 95% 90% 75% 50% 25% 10% 5%
: --- --- --- --- --- --- ---
:BAD R
MIDS2 2.9/ 2.9/ 3.0/ 4.9/ 7.9/ 14.7/ 15.6
FTPS2 1.2/ 1.2/ 2.1/ 4.8/ 6.8/ 9.7/ 12.4
:WHITE R
KDKS2 3.5/ 3.5/ 5.2/ 7.3/ 10.2/ 11.3/ 14.5
WHRS2 3.4/ 3.5/ 5.3/ 8.2/ 10.3/ 12.0/ 14.6
OACS2 8.6/ 8.6/ 9.4/ 12.0/ 13.7/ 15.6/ 16.8
:NIOBRARA R
SPKN1 3.0/ 3.0/ 3.1/ 3.2/ 3.3/ 3.4/ 3.5
VRDN1 3.6/ 3.7/ 3.7/ 3.9/ 4.1/ 4.2/ 4.8
:PONCA CR
VERN1 5.3/ 5.5/ 6.4/ 7.7/ 8.9/ 10.2/ 12.9
.END
IN TABLE 3 BELOW...THE 95 THROUGH 5 PERCENT COLUMNS INDICATE THE
PROBABILITY OF FALLING BELOW THE LISTED STAGE LEVELS (FT) FOR THE VALID
TIME PERIOD.
:...TABLE 3--NONEXCEEDANCE PROBABILITIES...
.B KRF 20260531 Z DH12 /DC2605261105/DVD90/HGVFZNT/HGVFZN9/HGVFZNH
.B1 /HGVFZN5/HGVFZNG/HGVFZN1/HGVFZNF
: CHANCE OF FALLING BELOW STAGES (FT) AT SPECIFIC LOCATIONS
: VALID PERIOD = 05/31/2026 - 08/29/2026
: 95% 90% 75% 50% 25% 10% 5%
: --- --- --- --- --- --- ---
:BAD R
MIDS2 2.9/ 2.9/ 2.8/ 2.7/ 2.7/ 2.7/ 2.7
FTPS2 1.2/ 1.2/ 1.2/ 1.2/ 1.2/ 1.2/ 1.2
:WHITE R
KDKS2 3.5/ 3.5/ 3.5/ 3.5/ 3.5/ 3.5/ 3.5
WHRS2 3.2/ 3.2/ 3.1/ 3.1/ 3.1/ 3.1/ 3.1
OACS2 8.1/ 8.1/ 8.1/ 8.0/ 8.0/ 8.0/ 8.0
:NIOBRARA R
SPKN1 2.6/ 2.5/ 2.5/ 2.5/ 2.4/ 2.4/ 2.4
VRDN1 3.2/ 3.2/ 3.1/ 3.1/ 3.1/ 3.1/ 3.1
:PONCA CR
VERN1 5.2/ 5.2/ 5.2/ 5.2/ 5.2/ 5.2/ 5.2
:LONG-RANGE PROBABILISTIC OUTLOOKS WILL BE ISSUED NEAR THE END OF
:THE MONTH THROUGHOUT THE YEAR.
.END
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