Alert archive / Illinois / River Flood Warnings in 2017

River Flood Warning 58, NWS Quad Cities, IA

May 10, 2017Henry County, Rock Island County, Illinois

NWS Quad Cities, IA issued this river flood warning at May 10, 2017, 8:13 PM CDT for Henry County, Rock Island County, Illinois. It took effect at May 12, 2017, 1:00 AM CDT. It was in force for 5 days.

The area

The counties it named.

The facts

Issued: May 10, 2017, 8:13 PM CDT (01:13 UTC)
In effect from: May 12, 2017, 1:00 AM CDT
Expired: May 16, 2017, 7:00 PM CDT
In force: 5 days
Issued by: NWS Quad Cities, IA
Area: Storm-based polygon
Flood severity: Minor

Counties Henry County, IL, Rock Island County, IL

The radar

The Quad Cities radar (KDVN), 30 km from the middle of the area, began a volume at 01:15 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The river

Written for the forecast point Rock River at Moline (MLII2).

Action stage: 11 ft
Minor stage: 12 ft
Moderate stage: 13 ft
Major stage: 14 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record, one reading an hour, from a day before the product to a day after it ended. Flood stages are today's.

What forecasters said that day

The local office's own words before this river flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Quad Cities, IA wrote its last area forecast discussion before this river flood warning went out at May 10, 6:48 PM CDT, 1 hour 25 minutes earlier.

Area forecast discussion, May 10, 6:48 PM CDT, 1 hour 25 minutes before

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Hazardous weather outlook, May 10, 4:55 AM CDT, 15 hours 18 minutes before

Hazardous Weather Outlook
National Weather Service Quad Cities IA IL
455 AM CDT Wed May 10 2017

IAZ040>042-051>054-063>068-076>078-087>089-098-099-ILZ001-002-007-
009-015>018-024>026-034-035-MOZ009-010-111000-
Buchanan-Delaware-Dubuque-Benton-Linn-Jones-Jackson-Iowa-Johnson-
Cedar-Clinton-Muscatine-Scott-Keokuk-Washington-Louisa-Jefferson-
Henry IA-Des Moines-Van Buren-Lee-Jo Daviess-Stephenson-Carroll-
Whiteside-Rock Island-Henry IL-Bureau-Putnam-Mercer-Henderson-
Warren-Hancock-McDonough-Scotland-Clark-
455 AM CDT Wed May 10 2017

This Hazardous Weather Outlook is for portions of north central
Illinois...northwest Illinois...west central Illinois...east
central Iowa...northeast Iowa...southeast Iowa and northeast
Missouri.

.DAY ONE...TODAY AND TONIGHT

Severe thunderstorms are possible across much of the outlook area
this afternoon and evening. The Storm Prediction Center has a
placed a slight risk over the area roughly south of a line from
Independence Iowa to Freeport Illinois.

Scattered thunderstorms will move through eastern Iowa and
northwest Illinois this morning. These are not expected to be
severe, but may produce locally heavy downpours, frequent
lightning and small hail.

Thunderstorms are expected to redevelop this afternoon and
continue into this evening. Some of these may be severe, with a
threat of large hail, damaging winds and a few tornadoes. The
initial severe weather threat will be associated with supercell
thunderstorms over eastern Iowa and northwest Illinois after 2
pm. These will be closely linked to the location of a warm front,
which remains uncertain at this time.

From late afternoon into the evening, more widespread coverage of
thunderstorms is expected ahead of an advancing cold front. In
addition to the continued potential for severe weather, these
storms may also produce locally heavy rainfall and a threat of
flash flooding.

Area rivers are experiencing flooding. Please see the
latest Flood Statements and Flood Warnings for details.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed this afternoon and evening.

Sheets

In the hours before

Local storm report, May 10, 5:52 PM CDT, 2 hours 21 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
552 PM CDT WED MAY 10 2017

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

0546 PM     TSTM WND DMG     5 WSW MACOMB            40.44N 90.77W
05/10/2017                   MCDONOUGH          IL   TRAINED SPOTTER

            TREE BLOWN DOWN, ONTO HOME ROOF.

&&

ERVIN

Local storm report, May 10, 6:05 PM CDT, 2 hours 8 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
605 PM CDT WED MAY 10 2017

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

0535 PM     TSTM WND DMG     MACOMB                  40.47N 90.68W
05/10/2017                   MCDONOUGH          IL   TRAINED SPOTTER

            TREE DOWN ON POWER POLE ON MAPLE AVE NEAR THE HIGH
            SCHOOL, TIME ESIMATED ON RADAR.

&&

PETERS

Local storm report, May 10, 6:11 PM CDT, 2 hours 2 minutes before

PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
611 PM CDT WED MAY 10 2017

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

0545 PM     TSTM WND DMG     MACOMB                  40.47N 90.68W
05/10/2017                   MCDONOUGH          IL   TRAINED SPOTTER

            TREE DOWN ON POWER POLE ON MAPLE AVE NEAR THE HIGH
            SCHOOL, TIME ESIMATED ON RADAR.

&&

PETERS

Local storm report, May 10, 6:29 PM CDT, 1 hour 44 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
629 PM CDT WED MAY 10 2017

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

0620 PM     HEAVY RAIN       1 W BETTENDORF          41.56N 90.49W
05/10/2017  M1.76 INCH       SCOTT              IA   TRAINED SPOTTER

            RAINFALL SO FAR TODAY...0.77 INCHES SINCE 430 PM

0620 PM     HEAVY RAIN       4 N MARENGO             41.85N 92.07W
05/10/2017  M1.25 INCH       IOWA               IA   TRAINED SPOTTER

0530 PM     HEAVY RAIN       LOWDEN                  41.86N 90.92W
05/10/2017  M1.52 INCH       CEDAR              IA   CO-OP OBSERVER

            RAINFALL IN THE PAST 8 HOURS.

0545 PM     HEAVY RAIN       5 E CANTRIL             40.64N 91.98W
05/10/2017  M1.00 INCH       VAN BUREN          IA   TRAINED SPOTTER

            RAINFALL TODAY.

0502 PM     TSTM WND GST     MONMOUTH                40.91N 90.64W
05/10/2017  E50 MPH          WARREN             IL   PUBLIC

            TIME ESTIMATED FROM RADAR.

&&

GROSS

Local storm report, May 10, 7:02 PM CDT, 1 hour 11 minutes before

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Local storm report, May 10, 7:08 PM CDT, 1 hour 5 minutes before

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The office that day

Everything else NWS Quad Cities, IA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 11, 10:22 AM CDT	River Flood Warning	DVN	Louisa, Muscatine	6 days
May 11, 4:19 AM CDT	River Flood Warning	DVN	Whiteside	3 days

Nearby

River Flood Warnings in Illinois, 2017 Every river flood warning in 2017

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive; the gauge from the NWS water service and the USGS.