Hydrologic Outlook-THE NATIONAL WEATHER SERVICE ISSUES A FLOOD POTENTIAL OUTLOOK TWICE EACH SPRING #flood #outlook #tnwx
March 6th, 2010
HYDROLOGIC OUTLOOK NATIONAL WEATHER SERVICE NASHVILLE TN 1202 PM CST FRI MAR 5 2010 ...HYDROLOGIC OUTLOOK... THIS SPRING FLOOD OUTLOOK IS FOR RIVERS AND STREAMS IN MIDDLE TENNESSEE...INCLUDING THE TRIBUTARIES AND MAIN-STEM PORTIONS OF THE CUMBERLAND AND TENNESSEE RIVERS. THE NATIONAL WEATHER SERVICE ISSUES A FLOOD POTENTIAL OUTLOOK TWICE EACH SPRING. THIS PRODUCT IS COMPRISED OF AN ANALYSIS OF CURRENT HYDROLOGIC CONDITIONS THAT MAY BE CONDUCIVE TO FLOODING...INCLUDING SOIL MOISTURE...RIVER AND STREAM LEVELS...RESERVOIR LEVELS...AND FUTURE PRECIPITATION PATTERNS. ALSO...SNOW COVER IS FACTORED IN IF IT HAS OCCURRED. FOR MIDDLE TENNESSEE THE FLOOD OUTLOOK POTENTIAL IS AVERAGE FOR SPRING 2010. .CURRENT CONDITIONS... SOIL MOISTURE VALUES REMAIN HIGH DUE TO ABUNDANT PRECIPITATION ACROSS THE AREA THIS WINTER...DURING A TIME OF YEAR WHEN SOIL MOISTURE IS ESPECIALLY HIGH ANYWAY. HOWEVER...SOME SHORT TERM DRYNESS IS BEGINNING TO DEVELOP. CURRENTLY...PRECIPITATION AT THE NASHVILLE INTERNATIONAL AIRPORT AND AT THE CROSSVILLE AIRPORT ARE RUNNING SLIGHTLY BELOW NORMAL. RIVER AND STREAM LEVELS ARE NORMAL FOR THIS TIME OF YEAR. AREA RESERVOIRS ARE GENERALLY HELD WITHIN A WINTER OPERATING RANGE TO ACCOUNT FOR RUNOFF STORAGE THROUGH THE SPRING. EARLIER HEAVY RAINS HAVE CAUSED WATER LEVELS TO RISE BUT CURRENT LEVELS ARE NEAR NORMAL. .8-14 DAY AND MARCH OUTLOOKS... THE 8-14 DAY OUTLOOK AND MONTHLY OUTLOOK FOR MARCH ISSUED BY THE CLIMATE PREDICTION CENTER SHOW A HIGH PROBABILITY OF BELOW NORMAL TEMPERATURES CONTINUING. THE OUTLOOK ALSO INDICATES EQUAL CHANCES OF NEAR NORMAL...ABOVE NORMAL...OR BELOW NORMAL PRECIPITATION FOR MIDDLE TENNESSEE. .SEASONAL OUTLOOK FOR THE SPRING... THE OUTLOOK FOR THE SPRING SEASON...MARCH THROUGH MAY...ISSUED BY THE CLIMATE PREDICTION CENTER INDICATES EQUAL CHANCES OF NEAR NORMAL...ABOVE NORMAL...OR BELOW NORMAL TEMPERATURES AND PRECIPITATION FOR MIDDLE TENNESSEE. .SUMMARY... THE SPRING FLOOD POTENTIAL FOR MIDDLE TENNESSEE IS AVERAGE. THIS IS DUE TO CURRENT SOIL MOISTURE AND WATER LEVELS ON AREA RIVERS AND STREAMS. THE SHORT TERM DRYNESS HAS HELPED TO DECREASE THE OVERALL CHANCE OF FLOODING...BUT IS NOT ENOUGH TO COUNTERACT THE ABUNDANT PRECIPITATION EXPERIENCED THIS WINTER. THIS PRODUCT IS DESIGNED TO GIVE EMERGENCY MANAGEMENT OFFICIALS... THE PUBLIC...AND THOSE IN MIDDLE TENNESSEE WITH INTERESTS ALONG RIVERS AND STREAMS AN OUTLOOK ON THE POTENTIAL FOR FLOODING DURING THE SPRING...THE TRADITIONAL FLOODING SEASON. THIS AND OTHER HYDROLOGIC INFORMATION IS AVAILABLE ON THE INTERNET AT: WWW.WEATHER.GOV/NASHVILLE UNDER THE RIVERS AND LAKES LINK ON THE LEFT. NATIONAL FLOOD SAFETY AWARENESS WEEK IS MARCH 15TH THROUGH 19TH 2010. STREAM AND RAINFALL DATA ARE PROVIDED BY THE TENNESSEE VALLEY AUTHORITY...THE U.S. GEOLOGICAL SURVEY...THE U.S. ARMY CORPS OF ENGINEERS...AND NATIONAL WEATHER SERVICE COOPERATIVE AND BACKYARD WEATHER OBSERVERS. WE THANK THESE PARTNERS FOR THEIR VALUABLE DATA. $$ LAROSA
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