Alert archive / Illinois / River Flood Watches in 2018

River Flood Watch 39, NWS Quad Cities, IA

June 19, 2018Henry County, Rock Island County, Whiteside County, Illinois

NWS Quad Cities, IA issued this river flood watch at Jun 19, 2018, 9:13 AM CDT for Henry County, Rock Island County, Whiteside County, Illinois. It took effect at Jun 20, 2018, 3:00 PM CDT. It was in force for .

The area

The counties it named.

The facts

Issued: Jun 19, 2018, 9:13 AM CDT (14:13 UTC)
In effect from: Jun 20, 2018, 3:00 PM CDT
Expired: Jun 19, 2018, 9:07 PM CDT
In force
Issued by: NWS Quad Cities, IA
Area: Storm-based polygon
Flood severity: None

Counties Henry County, IL, Rock Island County, IL, Whiteside County, IL

The radar

The Quad Cities radar (KDVN), 33 km from the middle of the area, began a volume at 14:15 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 near Joslin (JOSI2). The gauge peaked at 12.88 ft at Jun 20, 2018, 9:00 PM CDT.

Action stage: 11 ft
Minor stage: 12 ft
Moderate stage: 14 ft
Major stage: 16.5 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 05446500, 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 watch 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 watch went out at Jun 19, 6:29 AM CDT, 2 hours 44 minutes earlier.

Area forecast discussion, Jun 19, 6:29 AM CDT, 2 hours 44 minutes before

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Hazardous weather outlook, Jun 19, 4:25 AM CDT, 4 hours 48 minutes before

Hazardous Weather Outlook
National Weather Service Quad Cities IA IL
425 AM CDT Tue Jun 19 2018

IAZ040>042-051>054-063>068-076>078-087>089-098-099-ILZ001-002-007-
009-015>018-024>026-034-035-MOZ009-010-201000-
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-
425 AM CDT Tue Jun 19 2018

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

Scattered thunderstorms are expected to occasionally move across
the Outlook area today and into tonight. The coverage is expected
to be higher along and south of Interstate 80 by this afternoon
and evening. A few storms may become strong to severe with
damaging winds the primary threat. The Storm Prediction Center has
placed areas along and south of the Highway 20 corridor in a
marginal risk for severe weather today.

A more widespread threat will be from very heavy rainfall and
possible flash flooding where the thunderstorms occur repeatedly.
Again, areas more favored for this potential appear to along and
south of the Interstate 80 corridor this afternoon and evening.
The highway 20 corridor which received very heavy rainfall last
night especially in northwestern Illinois, is more prone to flash
flooding should widespread heavy rain-producing thunderstorms can
move across these areas again. But currently only isolated to
widely scattered storms are expect across these northern areas
today and tonight.

Although not quite reaching heat advisory criteria, some areas
south of the Interstate 80 corridor may have heat index readings
in the mid to upper 90s before storms hit and cool things down
later in the afternoon.

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

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

Expect periods of thunderstorms from Wednesday through Friday. The
severe weather risk is low, but additional rounds of moderate to
heavy rainfall may lead to flooding problems.

Flooding is expected to continue on some tributary rivers.
Rounds of heavy rainfall may also cause additional river sites to
rise later this week. Please see the latest Flood Statements and
Flood Warnings for details.

.SPOTTER INFORMATION STATEMENT...

There is a low chance that spotter activation will be needed today
and tonight. Any reports flooding or high water would be
appreciated.

12/RP Kinney

In the hours before

Local storm report, Jun 19, 7:35 AM CDT, 1 hour 38 minutes before

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Local storm report, Jun 19, 7:38 AM CDT, 1 hour 35 minutes before

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Local storm report, Jun 19, 7:58 AM CDT, 1 hour 15 minutes before

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Local storm report, Jun 19, 8:17 AM CDT, 56 minutes before

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Local storm report, Jun 19, 8:21 AM CDT, 52 minutes before

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Local storm report, Jun 19, 9:03 AM CDT, 10 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
903 AM CDT TUE JUN 19 2018

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

0902 AM     HEAVY RAIN       3 SW WINNESHIEK         42.32N 89.57W
06/19/2018  M5.75 INCH       STEPHENSON         IL   TRAINED SPOTTER

            PAST 12 HOURS. .95" PAST HOUR. NO WATER
            ISSUES.

&&

WDN

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 18, 7:11 PM CDT	Special Weather Statement	DVN	Dubuque	49 min
Jun 18, 11:50 PM CDT	Special Weather Statement	DVN	Dubuque	55 min
Jun 19, 5:56 AM CDT	Special Weather Statement	DVN	Clinton, Jackson	49 min
Jun 19, 6:12 AM CDT	Special Weather Statement	DVN	Iowa	63 min
Jun 18, 7:41 PM CDT	Flash Flood Warning	DVN	Jo Daviess, Stephenson	6 hr
Jun 18, 11:23 PM CDT	Special Weather Statement	DVN	Bureau	52 min
Jun 19, 6:39 AM CDT	Special Weather Statement	DVN	Carroll, Stephenson	66 min
Jun 19, 9:13 AM CDT	River Flood Watch	DVN	Henry, Rock Island	35 hr
Jun 19, 2:25 PM CDT	Special Weather Statement	DVN	Henry	65 min
Jun 19, 2:34 PM CDT	Severe Thunderstorm Warning	DVN	Henry	41 min
Jun 19, 2:38 PM CDT	Severe Thunderstorm Warning	DVN	Henry	52 min
Jun 19, 2:54 PM CDT	Special Weather Statement	DVN	Bureau	66 min
Jun 19, 3:01 PM CDT	Severe Thunderstorm Warning	DVN	Bureau	44 min
Jun 19, 3:09 PM CDT	Severe Thunderstorm Warning	DVN	Henry	30 min
Jun 19, 3:36 PM CDT	Severe Thunderstorm Warning	DVN	Bureau, Putnam	54 min
Jun 19, 1:25 PM CDT	Special Weather Statement	DVN	Clark, Scotland	35 min

Nearby

River Flood Watches in Illinois, 2018 Every river flood watch in 2018

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.