Hydrometeorological Discussion
Issued by NWS North Central River Forecast Center

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Hydrometeorological Forecast Discussion
NWS North Central River Forecast Center Twin Cities/Chanhassen MN
1110 AM CST Sat Jan 20 2018

The biggest concern for flooding hinges on the amount of rainfall,
snow melt and frozen ground runoff that is expected Sunday
through Monday. All indications are that river flooding should be
in the minor category. However with ice jams and quicker than
expected runoff from frozen ground there is always the chance of
more significant flooding.

River forecasts routinely incorporate 24 hours of QPF from
April 1 to September 30 and 48 hours from October 1 to March 31.
See http://www.weather.gov/ncrfc/LMI_QPF_NcrfcCurrentQpf

...Forecast Activity...
RVF forecasts issued today.  Issue times are in UTC.
Subtract 6 hrs for CST, 5 hrs for CDT/EST, 4 hrs for EDT.

RVF  Forecast Group description             Issue Time
GND Grand, Muskegon/White Basins, MI   2018-01-20 16:14 UTC
ILO Mainstem Illinois R                2018-01-20 16:28 UTC
KDF Illinois R tribs abv LaSalle, IL   2018-01-20 15:59 UTC
M19 Miss. R - L&D 11-Gregory Landing   2018-01-20 15:52 UTC
MIS Miss. R - L&D 20 to Chester, IL    2018-01-20 16:32 UTC
NLM Northern Lower Michigan rivers     2018-01-20 16:14 UTC

=====================================================================

Sites with forecasts above flood stage (FS):
                                                                 MAX
RVF NWSLI    Station name/river                             FS   FCST
KDF SLBI3 Shelby - Kankakee R                              9.0    9.7

Sites with forecasts below flood stage but above a
user-defined threshold (FS=Flood Stage):
                                                                 MAX
RVF NWSLI    Station name/river                             FS   FCST
GND HHTM4 Holt - 2E - Sycamore Cr                          8.0    6.7
GND EAGM4 Eagle - 2NNE - Looking Glass R                   7.0    6.2
GND MRPM4 Maple Rapids - Maple R                           9.0    8.2
GND IONM4 Ionia - Grand R                                 21.0   14.2

=====================================================================

...Past Precipitation...
Observation times are in UTC.
Subtract 6 hrs for CST, 5 hrs for CDT/EST, 4 hrs for EDT.
=====================================================================

No measureable precipitatin reported within the NCRFC area
of Iowa during the last 24 hours.

No measureable precipitatin reported within the NCRFC area
of Illinois during the last 24 hours.

No measureable precipitatin reported within the NCRFC area
of Indiana during the last 24 hours.

Top daily precipitation reports greater than zero from Michigan:
LID      OBTIME/SHEF  VALUE   NAME / DETAIL                     STATE
OJIM4    DH1200/PPDRG  0.15 : Cooper Harbor 53NW - Ojibway (RAWS) MI
HUMM4    DH1200/PPDRG  0.01 : Humboldt                            MI
BOYM5    DH1200/PPDRG  0.01 : Boy River 6S                        MI
MIBR13   DH1300/PPDRZ 0.001 : Hastings 4SSW                       MI

Top daily precipitation reports greater than zero from Minnesota:
LID      OBTIME/SHEF  VALUE   NAME / DETAIL                     STATE
RNRM5    DH1200/PPDRG  0.13 : Roseau 2E /RAWS/                    MN
ISAM5    DH1200/PPDRG  0.09 : Isabella 3W (RAWS)                  MN
PKGM5    DH1200/PPDRG  0.09 : Grand Rapids 3WNW-Pokegama Dam      MN
EFRM5    DH1200/PPDRG  0.09 : Clementson 3SE                      MN
BIGM5    DH1200/PPDRG  0.08 : Bigfork 6W                          MN

No measureable precipitatin reported within the NCRFC area
of Missouri during the last 24 hours.

Top daily precipitation reports greater than zero from North Dakota:
LID      OBTIME/SHEF  VALUE   NAME / DETAIL                     STATE
EMON8    DH1200/PPDRP  0.01 : Edmore 3NW                          ND
MICN8    DH1200/PPDRP  0.01 : Michigan 2W (NDAWN)                 ND
LNKN8    DH1300/PPDRZ 0.001 : Lankin 6E                           ND
GRFN8    DH1202/PPDRZ 0.001 : Grand Forks - Nws / U Of North Dako ND
NDCS04   DH1400/PPDRZ 0.001 : Fargo 3NE                           ND

No measureable precipitatin reported within the NCRFC area
of South Dakota during the last 24 hours.

Top daily precipitation reports greater than zero from Wisconsin:
LID      OBTIME/SHEF  VALUE   NAME / DETAIL                     STATE
PLPW3    DH1200/PPDRG  0.04 : Phelps 2SW /RAWS/                   WI
WHRW3    DH1200/PPDRP  0.04 : Ashland 6S                          WI
CLRW3    DH1200/PPDRG  0.03 : Clam Lake 4NW /RAWS/                WI
LNL      DH1155/PPDRZ  0.03 : Land O`Lakes Arpt                   WI
SMRW3    DH1200/PPDRG  0.02 : Fifield - Smith Rapids /RAWS/       WI

=====================================================================

See http://www.weather.gov/ncrfc/LMI_QCPCPN for all reports.


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


$$






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