692  
FGUS54 KTUA 211301  
RVFOUN  
 
RIVER FORECAST  
NWS ARKANSAS-RED BASIN RIVER FORECAST CENTER TULSA OK  
800 AM CDT THU MAY 21 2026  
 
THIS IS A NWS GUIDANCE PRODUCT FROM THE ARKANSAS-RED BASIN RIVER  
FORECAST CENTER. PUBLIC FORECASTS AND WARNINGS ARE ISSUED BY NWS  
WEATHER FORECAST OFFICES.  
 
: FORECAST GROUP IS KEYSTONE INFLOW  
:  
: FORECASTS INCLUDE 24-HOUR FUTURE RAINFALL IN SIX-HOUR INCREMENTS.  
:  
:*******************************************************************  
:BLACKWELL, OK - CHIKASKIA RIVER  
:ZERO DATUM 967.41 FT (NGVD29)  
:ACTION STAGE 26.0 FT MINOR STAGE 29.0 FT  
:MODERATE STAGE 30.0 FT MAJOR STAGE 32.0 FT  
:  
:LATEST RIVER STAGE IS 3.0 FT AT 730 AM CDT ON MAY 21  
:  
.ER BLKO2 0521 C DC202605210800/DH13/HGIFF/DIH6  
:RIVER FORECAST/ 7AM / 1PM / 7PM / 1AM  
.E1 : 0521 : / 2.9 / 2.8 / 2.7  
.E2 : 0522 : / 2.7 / 2.6 / 2.6 / 2.6  
.E3 : 0523 : / 2.5 / 2.5 / 2.4 / 2.4  
.E4 : 0524 : / 2.4 / 2.3 / 2.3 / 2.3  
.E5 : 0525 : / 2.3 / 2.3 / 2.3 / 2.3  
.E6 : 0526 : / 2.3  
.ER BLKO2 0521 C DC202605210800/DH13/PPQFZ/DIH6  
:QPF FORECAST / 7AM / 1PM / 7PM / 1AM  
.E1 : 0521 : / 0.10 / 0.04 / 0.02  
.E2 : 0522 : / 0.00  
.AR BLKO2 0521 C DC202605210800/DH13/PPVFZ/DVH24/0.16  
:  
:FORECASTER COMMENTS...  
:  
:*******************************************************************  
:  
.AR TUA 0521 C DT202605211300/YIIRZ 19 : MBV  
:  
 
:  
:RIVER FORECASTS WITH ZERO FORECAST RAINFALL AND OTHER CONTINGENCIES  
:AVAILABLE AT HTTPS://WWW.WEATHER.GOV/SOURCE/ABRFC/RAWMODEL/INDEX.HTML  
:  
:...END OF MESSAGE...  
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