Hydrometeorological Discussion
Issued by NWS North Central River Forecast Center

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AGUS73 KMSR 211632
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HYDROMETEOROLOGICAL FORECAST DISCUSSION
NWS NORTH CENTRAL RIVER FORECAST CENTER TWIN CITIES/CHANHASSEN MN
1130 AM CDT THU AUG 21 2014

...PRECIPITATION...

STRONG MOISTURE ADVECTION INTO THE NORTHERN PLAINS IN ADVANCE OF
AN APPROACHING LOW PRESSURE SYSTEM FUELED SOME WIDESPREAD HEAVY
SHOWERS AND THUNDERSTORMS OVER NORTH DAKOTA AND THE SOUTHERN HALF
OF MINNESOTA LAST NIGHT.  A COUPLE SMALLER BANDS OF RAIN ALSO FELL
OVER NORTHERN ILLINOIS AND SOUTHERN IOWA THROUGH CENTRAL ILLINOIS.

AMOUNTS IN THE HEAVIER BANDS RANGED GENERALLY BETWEEN 1.5 AND 2.5
INCHES WITH THE HEAVIEST AMOUNTS OVER 3.5 INCHES FALLING ALONG THE
NORTH DAKOTA AND CANADA BORDER.

IN THE NEXT 24 HOURS THE LOW PRESSURE CENTER WILL MIGRATE OVER
MINNESOTA TOWARDS WISCONSIN WHILE ANOTHER BOUNDARY WILL SAG INTO
THE DAKOTAS FROM CANADA.  THIS SETUP WILL BRING RAIN SHOWERS TO
MOST OF THE NCRFC REGION IN THE NEXT FORECAST PERIOD WITH THE
HEAVIEST AMOUNTS EXPECTED OVER SOUTHERN MICHIGAN.

...HYDROLOGIC CONDITIONS...

LOCALIZED HEAVY RAIN OVERNIGHT AND THIS MORNING IS CAUSING SOME
FAST RISES ON SMALLER TRIBUTARY RIVERS IN ILLINOIS AND MINNESOTA.
NO NEW FLOODING IS EXPECTED FROM THESE RISES.  SOIL CONDITIONS ARE
BECOMING WET NOW AFTER ABOUT A 6 WEEK DRY PERIOD.  RUNOFF WILL
INCREASE WITH EACH RAIN EVENT THROUGH THIS WEEKEND.  SOME NEW
FLOODING IS POSSIBLE WITH THIS INCREASED RUNOFF.

FOR ADDITIONAL AND MORE IN-DEPTH INFORMATION CONCERNING RIVER
FORECASTS...PRECIPITATION AND ALL HYDROMETEOROLOGICAL INFORMATION
IN THE NCRFC AREA OF RESPONSIBILITY...PLEASE REFER TO THE NCRFC
WEB PAGE AT:     HTTP://WWW.WEATHER.GOV/NCRFC

EMERGENCY CALL BACK LIST: JDT...LNE...DAM...RHR

IF NO RESPONSE FROM THIS LIST... CALL THE DOH...SCH OR HIC.


$$

...DCG/SCH...





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