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
1142 AM CST Wed Jan 17 2018

Cold temperatures are affecting river gages across the Midwest.
Many automated river gages are reporting erroneous stages.

The risk for freeze-up ice jams is elevated with current cold
temperatures in the Midwest.  River levels may fluctuate three
feet or more in stage due to ice jams and ice activity.

River forecasts routinely incorporate 24 hours of QPF from
April 1 to September 30 and 48 hours from October 1 to March 31.

...Forecast Activity...
RVF forecasts issued today.  Issue times 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   2018-01-17 14:06 UTC
ILO Mainstem Illinois R                2018-01-17 17:04 UTC
KDF Illinois R tribs abv LaSalle, IL   2018-01-17 16:12 UTC
M19 Miss. R - L&D 11-Gregory Landing   2018-01-17 15:37 UTC
MIS Miss. R - L&D 20 to Chester, IL    2018-01-17 16:35 UTC
MIS Miss. R - L&D 20 to Chester, IL    2018-01-17 16:39 UTC
NLM Northern Lower Michigan rivers     2018-01-17 14:41 UTC

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

No forecast points in the NCRFC forecast area are forecast to rise
above Flood Stage.

Sites with forecasts below flood stage but above a
user-defined threshold (FS=Flood Stage):
                                                                 MAX
RVF NWSLI    Station name/river                             FS   FCST
KDF SLBI3 Shelby - Kankakee R                              9.0    8.9

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

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

Top daily precipitation reports greater than zero from Iowa:
LID      OBTIME/SHEF  VALUE   NAME / DETAIL                     STATE
IAWH05   DH1300/PPDRZ 0.001 : Decorah 5SE                         IA
PEAI4    DH1300/PPDRZ 0.001 : Pella 1S                            IA
PERI4    DH1300/PPDRZ 0.001 : Perry WTP                           IA
SGYI4    DH1400/PPDRZ 0.001 : Sigourney                           IA
NWTI4    DH1300/PPDRZ 0.001 : Newton - KCOB Radio                 IA

Top daily precipitation reports greater than zero from Illinois:
LID      OBTIME/SHEF  VALUE   NAME / DETAIL                     STATE
ALSI2    DH1200/PPDRP  0.09 : Alsip                               IL
LSGI2    DH1200/PPDRP  0.07 : Lansing                             IL
ILLK08   DH1300/PPDRZ  0.07 : Gurnee 2NE                          IL
LMNI2    DH1200/PPDRP  0.07 : Lemont                              IL
ILMCL07  DH1300/PPDRZ  0.06 : Le Roy 4SSW                         IL

Top daily precipitation reports greater than zero from Indiana:
LID      OBTIME/SHEF  VALUE   NAME / DETAIL                     STATE
INLP63   DH1300/PPDRZ  0.40 : La Crosse 1W                        IN
INLP53   DH1300/PPDRZ  0.33 : Hanna 1E                            IN
INPT32   DH1300/PPDRZ  0.30 : Portage 1ESE                        IN
INPT69   DH1230/PPDRZ  0.27 : Porter 1S                           IN
INLP50   DH1235/PPDRZ  0.24 : (N9ROM)Trail Creek 4ESE             IN

Top daily precipitation reports greater than zero from Michigan:
LID      OBTIME/SHEF  VALUE   NAME / DETAIL                     STATE
HERM4    DH1300/PPDRZ  0.23 : Herman                              MI
STOM4    DH1200/PPDRG  0.16 : Rapid River 2SE /Stonington RAWS/   MI
HBRM4    DH1200/PPDRG  0.15 : Steuben 7SW /RAWS/                  MI
MIMQ17   DH1100/PPDRZ  0.15 : Ishpeming 6NNW                      MI
MNSM4    DH1130/PPDRZ  0.14 : Munising                            MI

Top daily precipitation reports greater than zero from Minnesota:
LID      OBTIME/SHEF  VALUE   NAME / DETAIL                     STATE
MSP      DH1200/PPDRZ 0.001 : Minneapolis-St Paul Intl Arpt       MN
BNDM5    DH1400/PPDRZ 0.001 : Ely 25E                             MN
NUMM5    DH1143/PPDRZ 0.001 : New Ulm 3SE                         MN
MNBW02   DH1100/PPDRZ 0.001 : New Ulm 1NW                         MN

Top daily precipitation reports greater than zero from Missouri:
LID      OBTIME/SHEF  VALUE   NAME / DETAIL                     STATE
PTSM7    DH1300/PPDRZ 0.001 : Potosi 4SW                          MO
CDAM7    DH1300/PPDRZ 0.001 : Center 6W-Clarence Cannon Dam       MO
HRVM7    DH1300/PPDRZ 0.001 : Harvester                           MO
OFLM7    DH1300/PPDRZ 0.001 : O`Fallon 2SSW                       MO
LSX      DH1200/PPDRZ 0.001 : Weldon Spring - St Louis WFO        MO

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

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
WIRC12   DH1200/PPDRZ  0.10 : Racine 2NNE                         WI
WIKN06   DH1300/PPDRZ  0.06 : Kenosha 2S                          WI
LTMW3    DH1200/PPDRZ  0.05 : Lake Tomahawk 2SE                   WI
CNNW3    DH1200/PPDRZ  0.05 : Crandon                             WI
OSKW3    DH1200/PPDRG  0.04 : Menasha - Fritse Pk                 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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