Alert archive / Illinois / Flash Flood Watches in 2021

Flash Flood Watch 2, NWS Quad Cities, IA

June 28, 202112 counties in Illinois; Clark County, Scotland County, Missouri; 8 counties in Iowa

NWS Quad Cities, IA issued this flash flood watch at Jun 28, 2021, 3:19 AM CDT for 12 counties in Illinois; Clark County, Scotland County, Missouri; 8 counties in Iowa. It took effect at Jun 28, 2021, 7:00 AM CDT. It was in force for 34 hr.

The area

The counties it named.

The facts

Issued
Jun 28, 2021, 3:19 AM CDT (08:19 UTC)
In effect from
Jun 28, 2021, 7:00 AM CDT
Expired
Jun 29, 2021, 5:22 PM CDT
In force
34 hr
Issued by
NWS Quad Cities, IA
Flood severity
None
All 22 counties

Clinton County, IA, Des Moines County, IA, Henry County, IA, Lee County, IA, Louisa County, IA, Muscatine County, IA, Scott County, IA, Van Buren County, IA, Bureau County, IL, Carroll County, IL, Hancock County, IL, Henderson County, IL, Henry County, IL, McDonough County, IL, Mercer County, IL, Putnam County, IL, Rock Island County, IL, Stephenson County, IL, Warren County, IL, Whiteside County, IL, Clark County, MO, Scotland County, MO

The radar

The Quad Cities radar (KDVN), 51 km from the middle of the area, began a volume at 08:18 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 nearest sounding before it

Davenport, (KDVN), launched 00:00Z, 8.3 hours before the alert went out and 55 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Davenport, at 00:00Z on 2021-06-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 4 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Davenport, at 00:00Z on 2021-06-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 47 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
4 J/kg
Mixed-layer CIN
-20 J/kg
Mixed-layer LCL
1163 m above ground
0-6 km bulk shear
50 kt
0-1 km storm-relative helicity
47 m²/s²
0-3 km storm-relative helicity
127 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

073 
WGUS63 KDVN 280819
FFADVN

URGENT - IMMEDIATE BROADCAST REQUESTED
Flood Watch
National Weather Service Quad Cities IA IL
319 AM CDT Mon Jun 28 2021

IAZ089-099-ILZ016>018-024>026-034-035-MOZ010-281715-
/O.NEW.KDVN.FF.A.0002.210628T1200Z-210630T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Des Moines-Lee-Henry IL-Bureau-Putnam-Mercer-Henderson-Warren-
Hancock-McDonough-Clark-
Including the cities of Geneseo, Princeton, Monmouth, Kahoka, 
Oquawka, Hennepin, Carthage, Burlington, Fort Madison, Macomb, and 
Aledo
319 AM CDT Mon Jun 28 2021

...FLASH FLOOD WATCH IN EFFECT FROM 7 AM CDT THIS MORNING THROUGH 
TUESDAY EVENING...

The National Weather Service in Quad Cities has issued a

* Flash Flood Watch for portions of Illinois, southeast Iowa and 
  northeast Missouri, including the following areas, in Illinois, 
  Bureau, Hancock, Henderson, Henry IL, McDonough, Mercer, Putnam 
  and Warren. In southeast Iowa, Des Moines and Lee. In northeast 
  Missouri, Clark.

* From 7 AM CDT this morning through Tuesday evening.

* Occasional rounds of showers and thunderstorms are expected across 
  the watch area through Tuesday. A very moist air mass could lead 
  to rainfall rates of 2 to 3 inches per hour in the hardest hit 
  areas. Locations that receive several rounds of heavy rain will be 
  most susceptible to flash flooding.

* Excessive runoff may result in flooding of low-lying and flood 
  prone locations. Small rivers, creeks and streams may rise out of 
  their banks.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

You should monitor later forecasts and be prepared to take action 
should Flash Flood Warnings be issued.

&&

$$

Uttech
7 follow-up statements
129 
WGUS63 KDVN 281640
FFADVN

URGENT - IMMEDIATE BROADCAST REQUESTED
Flood Watch
National Weather Service Quad Cities IA IL
1140 AM CDT Mon Jun 28 2021

IAZ066>068-078-088-098-ILZ002-007-009-015-MOZ009-290045-
/O.EXA.KDVN.FF.A.0002.000000T0000Z-210630T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Clinton-Muscatine-Scott-Louisa-Henry IA-Van Buren-Stephenson-Carroll-
Whiteside-Rock Island-Scotland-
Including the cities of Sterling, Freeport, Clinton, Memphis, Mount 
Pleasant, Rock Island, Moline, Keosauqua, Wapello, Davenport, Mount 
Carroll, Muscatine, and Bettendorf
1140 AM CDT Mon Jun 28 2021

...FLASH FLOOD WATCH IN EFFECT THROUGH TUESDAY EVENING...

The National Weather Service in Quad Cities has expanded the

* Flash Flood Watch to include portions of northwest Illinois, Iowa 
  and northeast Missouri, including the following areas, in 
  northwest Illinois, Carroll, Rock Island, Stephenson and 
  Whiteside. In Iowa, Clinton, Henry IA, Louisa, Muscatine, Scott 
  and Van Buren. In northeast Missouri, Scotland.

* Through Tuesday evening.

* Occasional rounds of showers and thunderstorms are expected across 
  the watch area through Tuesday. A very moist air mass could lead 
  to rainfall rates of 2 to 3 inches per hour in the hardest hit 
  areas. Locations that receive several rounds of heavy rain will be 
  most susceptible to flash flooding.

* Excessive runoff may result in flooding of low-lying and flood 
  prone locations. Small rivers, creeks and streams may rise out of 
  their banks.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

You should monitor later forecasts and be prepared to take action 
should Flash Flood Warnings be issued.

&&

$$

IAZ089-099-ILZ016>018-024>026-034-035-MOZ010-290045-
/O.CON.KDVN.FF.A.0002.000000T0000Z-210630T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Des Moines-Lee-Henry IL-Bureau-Putnam-Mercer-Henderson-Warren-
Hancock-McDonough-Clark-
Including the cities of Geneseo, Princeton, Monmouth, Kahoka, 
Oquawka, Hennepin, Carthage, Burlington, Fort Madison, Macomb, and 
Aledo
1140 AM CDT Mon Jun 28 2021

...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH TUESDAY EVENING...

The Flash Flood Watch continues for

* Portions of Illinois, southeast Iowa and northeast Missouri, 
  including the following areas, in Illinois, Bureau, Hancock, 
  Henderson, Henry IL, McDonough, Mercer, Putnam and Warren. In 
  southeast Iowa, Des Moines and Lee. In northeast Missouri, Clark.

* Through Tuesday evening.

* Occasional rounds of showers and thunderstorms are expected across 
  the watch area through Tuesday. A very moist air mass could lead 
  to rainfall rates of 2 to 3 inches per hour in the hardest hit 
  areas. Locations that receive several rounds of heavy rain will be 
  most susceptible to flash flooding.

* Excessive runoff may result in flooding of low-lying and flood 
  prone locations. Small rivers, creeks and streams may rise out of 
  their banks.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

You should monitor later forecasts and be prepared to take action 
should Flash Flood Warnings be issued.

&&

$$

Gunkel
145 
WGUS63 KDVN 282300
FFADVN

Flood Watch
National Weather Service Quad Cities IA IL
600 PM CDT Mon Jun 28 2021

IAZ066>068-078-088-089-098-099-ILZ002-007-009-015>018-024>026-034-
035-MOZ009-010-290700-
/O.CON.KDVN.FF.A.0002.000000T0000Z-210630T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Clinton-Muscatine-Scott-Louisa-Henry IA-Des Moines-Van Buren-Lee-
Stephenson-Carroll-Whiteside-Rock Island-Henry IL-Bureau-Putnam-
Mercer-Henderson-Warren-Hancock-McDonough-Scotland-Clark-
Including the cities of Carthage, Mount Pleasant, Oquawka, 
Keosauqua, Burlington, Wapello, Sterling, Monmouth, Kahoka, Macomb, 
Fort Madison, Memphis, Rock Island, Bettendorf, Princeton, Freeport, 
Hennepin, Davenport, Clinton, Geneseo, Mount Carroll, Moline, 
Muscatine, and Aledo
600 PM CDT Mon Jun 28 2021

...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH TUESDAY EVENING...

The Flash Flood Watch continues for

* Portions of Illinois, Iowa and northeast Missouri, including the 
  following areas, in Illinois, Bureau, Carroll, Hancock, Henderson, 
  Henry IL, McDonough, Mercer, Putnam, Rock Island, Stephenson, 
  Warren and Whiteside. In Iowa, Clinton, Des Moines, Henry IA, Lee, 
  Louisa, Muscatine, Scott and Van Buren. In northeast Missouri, 
  Clark and Scotland.

* Through Tuesday evening.

* Rounds of showers and thunderstorms are expected across the watch 
  area tonight through Tuesday. A very moist air mass could lead to 
  rainfall rates of 2 to 3 inches per hour in the hardest hit areas. 
  Locations that receive several rounds of heavy rain will be most 
  susceptible to flash flooding.

* Excessive runoff may result in flooding of low-lying and flood 
  prone locations. Small rivers, creeks and streams may rise out of 
  their banks.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

You should monitor later forecasts and be prepared to take action 
should Flash Flood Warnings be issued.

&&

$$

Gunkel
634 
WGUS63 KDVN 290201
FFADVN

Flood Watch
National Weather Service Quad Cities IA IL
901 PM CDT Mon Jun 28 2021

IAZ066>068-078-088-089-098-099-ILZ002-007-009-015>018-024>026-034-
035-MOZ009-010-291015-
/O.CON.KDVN.FF.A.0002.000000T0000Z-210630T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Clinton-Muscatine-Scott-Louisa-Henry IA-Des Moines-Van Buren-Lee-
Stephenson-Carroll-Whiteside-Rock Island-Henry IL-Bureau-Putnam-
Mercer-Henderson-Warren-Hancock-McDonough-Scotland-Clark-
Including the cities of Carthage, Mount Pleasant, Oquawka, 
Keosauqua, Burlington, Wapello, Sterling, Monmouth, Kahoka, Macomb, 
Fort Madison, Memphis, Rock Island, Bettendorf, Princeton, Freeport, 
Hennepin, Davenport, Clinton, Geneseo, Mount Carroll, Moline, 
Muscatine, and Aledo
901 PM CDT Mon Jun 28 2021

...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH TUESDAY EVENING...

The Flash Flood Watch continues for

* Portions of Illinois, Iowa and northeast Missouri, including the 
  following areas, in Illinois, Bureau, Carroll, Hancock, Henderson, 
  Henry IL, McDonough, Mercer, Putnam, Rock Island, Stephenson, 
  Warren and Whiteside. In Iowa, Clinton, Des Moines, Henry IA, Lee, 
  Louisa, Muscatine, Scott and Van Buren. In northeast Missouri, 
  Clark and Scotland.

* Through Tuesday evening.

* Rounds of showers and thunderstorms are expected across the watch 
  area tonight through Tuesday. A very moist air mass could lead to 
  rainfall rates of 2 to 3 inches per hour in the hardest hit areas. 
  Locations that receive several rounds of heavy rain will be most 
  susceptible to flash flooding.

* Excessive runoff may result in flash flooding of low-lying and 
  flood
  prone locations. Small rivers, creeks and streams may rise out of 
  their banks.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

You should monitor later forecasts and be prepared to take action 
should Flash Flood Warnings be issued.

&&

$$

Gibbs
461 
WGUS63 KDVN 290833
FFADVN

Flood Watch
National Weather Service Quad Cities IA IL
333 AM CDT Tue Jun 29 2021

IAZ066>068-078-088-089-098-099-ILZ002-007-009-015>018-024>026-034-
035-MOZ009-010-291645-
/O.CON.KDVN.FF.A.0002.000000T0000Z-210630T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Clinton-Muscatine-Scott-Louisa-Henry IA-Des Moines-Van Buren-Lee-
Stephenson-Carroll-Whiteside-Rock Island-Henry IL-Bureau-Putnam-
Mercer-Henderson-Warren-Hancock-McDonough-Scotland-Clark-
Including the cities of Carthage, Mount Pleasant, Oquawka, 
Keosauqua, Burlington, Wapello, Sterling, Monmouth, Kahoka, Macomb, 
Fort Madison, Memphis, Rock Island, Bettendorf, Princeton, Freeport, 
Hennepin, Davenport, Clinton, Geneseo, Mount Carroll, Moline, 
Muscatine, and Aledo
333 AM CDT Tue Jun 29 2021

...FLASH FLOOD WATCH REMAINS IN EFFECT THROUGH THIS EVENING...

The Flash Flood Watch continues for

* Portions of Illinois, Iowa and northeast Missouri, including the 
  following areas, in Illinois, Bureau, Carroll, Hancock, Henderson, 
  Henry IL, McDonough, Mercer, Putnam, Rock Island, Stephenson, 
  Warren and Whiteside. In Iowa, Clinton, Des Moines, Henry IA, Lee, 
  Louisa, Muscatine, Scott and Van Buren. In northeast Missouri, 
  Clark and Scotland.

* Through this evening.

* Rounds of showers and thunderstorms are expected across the watch 
  area with rainfall rates of 1 to 3 inches per hour. If storms 
  repeat over the same areas then flash flooding is possible.

* Excessive runoff may result in flash flooding of low-lying and 
  flood prone locations. Small rivers, creeks and streams may rise 
  out of their banks.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

You should monitor later forecasts and be prepared to take action 
should Flash Flood Warnings be issued.

&&

$$

08
930 
WGUS63 KDVN 291459
FFADVN

Flood Watch
National Weather Service Quad Cities IA IL
959 AM CDT Tue Jun 29 2021

IAZ066>068-078-088-089-098-099-ILZ002-007-009-015>018-024>026-034-
035-MOZ009-010-292300-
/O.CON.KDVN.FF.A.0002.000000T0000Z-210630T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Clinton-Muscatine-Scott-Louisa-Henry IA-Des Moines-Van Buren-Lee-
Stephenson-Carroll-Whiteside-Rock Island-Henry IL-Bureau-Putnam-
Mercer-Henderson-Warren-Hancock-McDonough-Scotland-Clark-
Including the cities of Carthage, Mount Pleasant, Oquawka, 
Keosauqua, Burlington, Wapello, Sterling, Monmouth, Kahoka, Macomb, 
Fort Madison, Memphis, Rock Island, Bettendorf, Princeton, Freeport, 
Hennepin, Davenport, Clinton, Geneseo, Mount Carroll, Moline, 
Muscatine, and Aledo
959 AM CDT Tue Jun 29 2021

...FLASH FLOOD WATCH REMAINS IN EFFECT UNTIL 7 PM CDT THIS EVENING...

The Flash Flood Watch continues for

* Portions of Illinois, Iowa and northeast Missouri, including the 
  following areas, in Illinois, Bureau, Carroll, Hancock, Henderson, 
  Henry IL, McDonough, Mercer, Putnam, Rock Island, Stephenson, 
  Warren and Whiteside. In Iowa, Clinton, Des Moines, Henry IA, Lee, 
  Louisa, Muscatine, Scott and Van Buren. In northeast Missouri, 
  Clark and Scotland.

* Until 7 PM CDT this evening.

* Rounds of showers and thunderstorms are expected across the watch 
  area with rainfall rates of 1 to 3 inches per hour. If storms 
  repeatedly move over the same areas then flash flooding is possible.


* Excessive runoff may result in flash flooding of low-lying and 
  flood prone locations. Small rivers, creeks and streams may rise 
  out of their banks.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

You should monitor later forecasts and be prepared to take action 
should Flash Flood Warnings be issued.

&&

$$

Cousins
832 
WGUS63 KDVN 292003
FFADVN

Flood Watch
National Weather Service Quad Cities IA IL
303 PM CDT Tue Jun 29 2021

IAZ066>068-078-088-089-098-099-ILZ002-007-009-015>018-024>026-034-
035-MOZ009-010-300000-
/O.CON.KDVN.FF.A.0002.000000T0000Z-210630T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Clinton-Muscatine-Scott-Louisa-Henry IA-Des Moines-Van Buren-Lee-
Stephenson-Carroll-Whiteside-Rock Island-Henry IL-Bureau-Putnam-
Mercer-Henderson-Warren-Hancock-McDonough-Scotland-Clark-
Including the cities of Carthage, Mount Pleasant, Oquawka, 
Keosauqua, Burlington, Wapello, Sterling, Monmouth, Kahoka, Macomb, 
Fort Madison, Memphis, Rock Island, Bettendorf, Princeton, Freeport, 
Hennepin, Davenport, Clinton, Geneseo, Mount Carroll, Moline, 
Muscatine, and Aledo
303 PM CDT Tue Jun 29 2021

...FLASH FLOOD WATCH REMAINS IN EFFECT UNTIL 7 PM CDT THIS EVENING...

The Flash Flood Watch continues for

* Portions of Illinois, Iowa and northeast Missouri, including the 
  following areas, in Illinois, Bureau, Carroll, Hancock, Henderson, 
  Henry IL, McDonough, Mercer, Putnam, Rock Island, Stephenson, 
  Warren and Whiteside. In Iowa, Clinton, Des Moines, Henry IA, Lee, 
  Louisa, Muscatine, Scott and Van Buren. In northeast Missouri, 
  Clark and Scotland.

* Until 7 PM CDT this evening.

* Additional showers and isolated thunderstorms capable of heavy 
  rainfall are expected into this evening. Heavy rainfall could 
  occur repeatedly over some locations, including those that have 
  previously received significant rainfall, leading to the potential 
  for localized flash flooding.

* Excessive runoff may result in flash flooding of low-lying and 
  flood prone locations. Small rivers, creeks and streams may rise 
  out of their banks.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

You should monitor later forecasts and be prepared to take action 
should Flash Flood Warnings be issued.

&&

$$

McClure
480 
WGUS63 KDVN 292222
FFADVN

Flood Watch
National Weather Service Quad Cities IA IL
522 PM CDT Tue Jun 29 2021

IAZ066>068-078-088-089-098-099-ILZ002-007-009-015>018-024>026-034-
035-MOZ009-010-292330-
/O.CAN.KDVN.FF.A.0002.000000T0000Z-210630T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Clinton-Muscatine-Scott-Louisa-Henry IA-Des Moines-Van Buren-Lee-
Stephenson-Carroll-Whiteside-Rock Island-Henry IL-Bureau-Putnam-
Mercer-Henderson-Warren-Hancock-McDonough-Scotland-Clark-
Including the cities of Carthage, Mount Pleasant, Oquawka, 
Keosauqua, Burlington, Wapello, Sterling, Monmouth, Kahoka, Macomb, 
Fort Madison, Memphis, Rock Island, Bettendorf, Princeton, Freeport, 
Hennepin, Davenport, Clinton, Geneseo, Mount Carroll, Moline, 
Muscatine, and Aledo
522 PM CDT Tue Jun 29 2021

...FLASH FLOOD WATCH IS CANCELLED...

The Flash Flood Watch for portions of Illinois, Iowa and northeast 
Missouri, including the following areas, in Illinois, Bureau, 
Carroll, Hancock, Henderson, Henry IL, McDonough, Mercer, Putnam, 
Rock Island, Stephenson, Warren and Whiteside. In Iowa, Clinton, Des 
Moines, Henry IA, Lee, Louisa, Muscatine, Scott and Van Buren. In 
northeast Missouri, Clark and Scotland has been cancelled.

The Flood Watch is cancelled. Flooding is no longer expected to pose 
a threat. Please continue to heed remaining road closures.

$$

Ervin

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 28, 12:20 PM CDTFlash Flood WarningDVNHancock5 hr
Jun 28, 1:36 PM CDTSpecial Weather StatementDVNHenderson24 min
Jun 28, 2:30 PM CDTSpecial Weather StatementDVNWhiteside45 min
Jun 28, 2:39 PM CDTSpecial Weather StatementDVNMcDonough, Warren96 min
Jun 28, 4:23 PM CDTSpecial Weather StatementDVNHancock, McDonough112 min
Jun 28, 12:01 PM CDTSpecial Weather StatementDVNClark, Scotland119 min

Nearby

Flash Flood Watches in Illinois, 2021Flash Flood Watches in Iowa, 2021Flash Flood Watches in Missouri, 2021Every flash flood watch in 2021

Sources

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