413  
FGUS71 KPBZ 091254  
ESFPBZ  
MDC023-OHC013-019-029-031-059-067-081-111-119-121-157-PAC003-005-  
007-019-031-051-053-059-063-065-073-085-121-125-129-WVC009-029-  
049-051-061-069-077-093-103-111300-  
 
WINTER/SPRING FLOOD POTENTIAL OUTLOOK  
NATIONAL WEATHER SERVICE PITTSBURGH PA  
854 AM EDT THU APR 9 2020  
 
...FLOOD POTENTIAL THE NEXT 2-3 WEEKS IS NEAR NORMAL IN THE OHIO  
VALLEY...  
 
THE FLOOD POTENTIAL THE NEXT 2 TO 3 WEEKS IS NEAR NORMAL IN  
THE OHIO VALLEY, WITH RECENT RAINFALL ACROSS THE OHIO VALLEY, SOME  
RIVERS WILL RISE ABOVE ACTION STAGE AND MINOR FLOOD STAGE OVER  
THE NEXT WEEK AND A HALF. THIS IS CONSIDERED NORMAL. RIVER FLOWS  
OVERALL WILL BE SLIGHTLY ABOVE NORMAL EVEN THOUGH THE FLOOD THREAT  
IS NORMAL.  
 
AN ABOVE NORMAL FLOOD POTENTIAL MEANS WIDESPREAD FLOODING COULD  
OCCUR WITH WATER LEVELS HAVING SIGNIFICANT IMPACTS.  
 
A NEAR NORMAL FLOOD POTENTIAL MEANS OCCASIONAL FLOODING COULD  
OCCUR WITH WATER LEVELS HAVING MINOR IMPACTS.  
 
FOR THE LONG-RANGE RIVER OUTLOOKS AND PROBABILITY OF EXCEEDING  
FLOOD STAGE OR THE CHANCES OF FLOODING RELATIVE TO NORMAL AT  
SPECIFIC FORECAST POINTS DURING THE NEXT 90 DAYS, REFER TO  
WWW.WEATHER.GOV/OHRFC AND CLICK ON THE 90-DAY RIVER OUTLOOK ON THE  
LEFT HAND SIDE OF THE PAGE. CLICK ON FLOOD CHC VS NORMAL TO VIEW  
THE RISK OF FLOODING WITH RESPECT TO NORMAL.  
 
WINTER/SPRING FLOOD OUTLOOKS ARE ISSUED WEEKLY TO SUMMARIZE BASIN  
HYDROMETEOROLOGICAL CONDITIONS AND TO ASSESS THE POTENTIAL FOR  
WINTER/SPRING FLOODING. THE OUTLOOKS ARE BASED ON CURRENT AND  
FORECAST CONDITIONS DURING THE OUTLOOK PERIOD.  
 
IN ADDITION, 30/60/90 DAY WATER RESOURCE OUTLOOKS ARE ISSUED  
MONTHLY.  
 
FACTORS CONSIDERED IN ASSESSING FLOOD POTENTIAL ARE:  
(1)ANTECEDENT CONDITIONS (2)PAST PRECIPITATION (3)RECENT  
STREAMFLOWS AND RESERVOIR LEVELS (4) SOIL MOISTURE (5) WATER  
CONTENT OF THE SNOW PACK (6) ICE CONDITIONS ON THE RIVERS AND  
(7)FUTURE PRECIPITATION.  
 
ANTECEDENT CONDITIONS/PRECIPITATION  
 
SINCE JANUARY 1, 2020, PRECIPITATION IS WELL ABOVE NORMAL WITH 110  
TO 200 PERCENT OF NORMAL.  
 
   
..SOIL MOISTURE
 
 
 
SOIL MOISTURE REMAINS HIGH. SOIL MOISTURE IS GENERALLY IN THE 80  
TO 90 PERCENTILE ACROSS THE OHIO VALLEY. NORTHWEST PENNSYLVANIA  
AND EXTREME NORTHEAST OHIO ARE CURRENTLY IN THE 99 PERCENTILE.  
 
OHIO...TOP 90%  
WESTERN PENNSYLVANIA...TOP 90%  
WEST VIRGINIA...TOP 75%  
   
..STREAMFLOWS
 
 
 
STREAMFLOWS RANGE FROM NORMAL TO MUCH ABOVE NORMAL. THE HIGHEST  
STREAMFLOWS OF ABOVE NORMAL TO MUCH ABOVE NORMAL EXISTS ACROSS  
EASTERN OHIO AND WESTERN PENNSYLVANIA. BELOW NORMAL FLOWS EXIST  
ACROSS EASTERN WEST VIRGINIA.  
 
OHIO...80% ABOVE NORMAL  
WESTERN PENNSYLVANIA...70% SLIGHTLY ABOVE NORMAL  
WEST VIRGINIA...45% NORMAL  
 
   
..OHIO RIVER FLOWS
 
(CURRENT PERCENT OF NORMAL)  
 
PITTSBURGH - 75%  
HUNTINGTON - 80%  
CINCINNATI - 90%  
LOUISVILLE - 95%  
EVANSVILLE - 110%  
SMITHLAND - 125%  
   
..SNOW WATER EQUIVALENT
 
 
 
THERE IS NO SNOW ACROSS THE OHIO VALLEY.  
 
   
..ICE COVER
 
 
THERE IS NO ICE ACROSS THE OHIO VALLEY.  
 
   
..FUTURE RAINFALL AND LATE SPRING FLOOD OUTLOOK SUMMARY
 
 
DURING THE NEXT 2 WEEKS, PROGRESSIVE WEATHER SYSTEMS WILL MOVE  
ACROSS THE OHIO VALLEY. BANKFULL TO MINOR FLOODING IS POSSIBLE  
DURING THIS PERIOD.  
 
TOWARDS THE MIDDLE TO END OF APRIL, THE WEATHER PATTERN WILL  
BECOME ACTIVE DUE TO SOUTHWESTERLY SUBTROPICAL JET IN COMBINATION  
WITH A STUBBORN SOUTHEASTERN SUBTROPICAL HIGH.  
 
   
..STATE BY STATE FLOOD RISK AND IMPACTS THROUGH EARLY MAY
 
 
OHIO...NORMAL RISK...MINOR IMPACTS  
WEST VIRGINIA...NORMAL RISK...NONE TO MINOR IMPACTS  
WESTERN PENNSYLVANIA...NORMAL FLOOD RISK...MINOR IMPACTS  
 
   
..OHIO RIVER FLOW FORECAST
 
NEXT 2 TO 3 WEEKS PERCENT OF NORMAL  
 
PITTSBURGH - 140%  
HUNTINGTON - 140%  
CINCINNATI - 150%  
LOUISVILLE - 160%  
EVANSVILLE - 150%  
SMITHLAND - 140%  
 

 
 
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