February 2018 Flooding Summary

Flooding

The Rock river and Pecatonica rivers in northwest Illinois experienced the brunt of the flooding with both rivers seeing major flooding and remaining in flood for a prolonged period of time.  The English, Maquoketa, and Iowa rivers in Iowa saw minor to moderate flooding, but for a shorter period of time. 

Hydrographs

MAJOR FLOODING
Pecatonica River - Freeport, IL	Rock River - Joslin, IL	Rock River - Moline, IL
MODERATE FLOODING
English River - Kalona, IA	Maquoketa River - Maquoketa, IA
MINOR FLOODING
Rock River - Como, IL	La Moine River - Colmar, IL	Iowa River - Lone Tree, IA	Iowa River - Marengo, IA

Photos/Survey

Ice Jam just upstream of Erie, IL (Whiteside County Emergency Management)	Ice Jame downstream from Rt 78 near Prophetstown, IL (Whiteside County Emergency Management)	Bridge at Joslin, IL (NWS Survey)	Near Joslin, IL (NWS Survey)

Radar:

Interactive Radar Loop - Courtesy Iowa Environmental Mesonet

Storm Reports

Interactive Map Link

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0944 PM     Freezing Rain    HENNEPIN                41.26N 89.32W
02/20/2018  E0.12 inch       Putnam             IL   CO-OP Observer   

            ACCUMULATED ON ELEVATED SURFACES AND A
            LITTLE ON GROUND...STILL FALLING LIGHTLY.

0459 PM     Heavy Rain       4 ENE FREEPORT          42.32N 89.57W
02/20/2018  M1.85 inch       Stephenson         IL   Trained Spotter  

            STORM TOTAL.

0303 PM     Heavy Rain       1 WNW MORRISON          41.81N 89.98W
02/20/2018  M1.80 inch       Whiteside          IL   Trained Spotter  

            STILL RAINING LIGHTLY.

0300 PM     Heavy Rain       7 NW MOUNT CARROLL      42.17N 90.07W
02/20/2018  M1.66 inch       Carroll            IL   Cocorahs         

            RAIN HAS STOPPED. .80 IN PAST 8 HOURS.

0257 PM     Heavy Rain       5 E CANTRIL             40.64N 91.98W
02/20/2018  M1.90 inch       Van Buren          IA   Trained Spotter  

            RAIN HAS ENDED. .70 SINCE THIS MORNING.

0104 PM     Heavy Rain       LOWDEN                  41.86N 90.92W
02/20/2018  M2.00 inch       Cedar              IA   CO-OP Observer   

            30 HOUR STORM TOTAL OF 2.0 INCHES.

0104 PM     Heavy Rain       W CANTRIL               40.64N 92.07W
02/20/2018  M1.60 inch       Van Buren          IA   Trained Spotter  

            1.6 INCHES STORM TOTAL THROUGH 30 HOURS.

0102 PM     Heavy Rain       1 W BETTENDORF          41.56N 90.49W
02/20/2018  E1.69 inch       Scott              IA   Trained Spotter  

            STORM TOTAL.

1229 PM     Flood            MC CONNELL              42.43N 89.73W
02/20/2018                   Stephenson         IL   Trained Spotter  

            SPOTTER REPORTS THAT CREEKS ARE OUT OF THEIR
            BANKS, CROSSING THE ROADS AND FLOODING
            FIELDS IN THIS AREA.

1229 PM     Heavy Rain       1 SSW NORTH LIBERTY     41.73N 91.61W
02/20/2018  M1.29 inch       Johnson            IA   Trained Spotter  

1158 AM     Heavy Rain       3 NNE STOCKTON          42.40N 89.99W
02/20/2018  M1.80 inch       Jo Daviess         IL   Trained Spotter  

            1.80 INCHES IN THE PAST 24 HOURS.

1158 AM     Heavy Rain       3 NNE STOCKTON          42.40N 89.99W
02/20/2018  M0.00 inch       Jo Daviess         IL   Trained Spotter  

            1.80 INCHES IN THE PAST 24 HOURS.

1134 AM     Heavy Rain       FREEPORT                42.29N 89.63W
02/20/2018  M1.00 inch       Stephenson         IL   Emergency Mngr   

1115 AM     Flood            2 N SAVANNA             42.12N 90.14W
02/20/2018                   Carroll            IL   Trained Spotter  

            FLOWING WATER 3 TO 4 INCHES DEEP ON IL-84
            NORTH OF SAVANNA.

0840 AM     Heavy Rain       5 NW MACOMB             40.52N 90.75W
02/20/2018  E3.40 inch       McDonough          IL   Public           

            VIA BROADCAST MEDIA.

0830 AM     Heavy Rain       2 SSE SCHAPVILLE        42.37N 90.18W
02/20/2018  M1.84 inch       Jo Daviess         IL   Trained Spotter  

            RAINFALL IN THE PAST 24 HOURS.

0817 AM     Heavy Rain       NW BUSHNELL             40.56N 90.51W
02/20/2018  M1.60 inch       McDonough          IL   Trained Spotter  

0814 AM     Heavy Rain       3 ENE ROCK FALLS        41.80N 89.64W
02/20/2018  M1.25 inch       Whiteside          IL   Trained Spotter  

            EVENT TOTAL UP TO 7 AM.

0808 AM     Heavy Rain       1 W BETTENDORF          41.56N 90.49W
02/20/2018  M1.07 inch       Scott              IA   Trained Spotter  

            STORM TOTAL. 0.75 FELL SINCE MIDNIGHT.

0804 AM     Heavy Rain       1 WNW MORRISON          41.81N 89.98W
02/20/2018  M1.00 inch       Whiteside          IL   Trained Spotter

Rainfall

Figure 1: Local 48-hr Rainfall Ending 2/21/18	Figure 2: Multiple-Radar/ Multiple-Sensor 72hr-Rainfall Ending 2/22/18	Figure 3: Regional 24-hr Rainfall 02/21/18	Figure 4: 6 day Regional Rainfall 2/15/18 - 2/21/18

Additional Information

The Forecast

WPC 5 Day QPF	WPC 3 Day QPF	WPC 2 Day QPF	WPC 1 Day QPF
WPC Day 3 Excessive Rainfall Outlook	WPC Day 2 Excessive Rainfall Outlook	WPC Day 1 Excessive Rainfall Outlook

Summaries from other NWS Offices

• Chicago, IL