Alert archive / Missouri / Flash Flood Warnings in 2021
Flash Flood Warning 6, NWS Quad Cities, IA
NWS Quad Cities, IA issued this flash flood warning at Jun 29, 2021, 4:55 AM CDT for Clark County, Missouri. It was in force for 99 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Jun 29, 2021, 4:55 AM CDT (09:55 UTC)
- Expired
- Jun 29, 2021, 6:34 AM CDT
- In force
- 99 min
- Issued by
- NWS Quad Cities, IA
- Area
- Storm-based polygon
- Flood severity
- None
County Clark County, MO
The radar
The Quad Cities radar (KDVN), 158 km from the middle of the area, began a volume at 09:58 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, 9.9 hours before the alert went out and 163 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.
- Mixed-layer CAPE
- 425 J/kg
- Mixed-layer CIN
- -10 J/kg
- Mixed-layer LCL
- 889 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 66 m²/s²
- 0-3 km storm-relative helicity
- 121 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 2.1
The text
As transmitted.
724
WGUS53 KDVN 290955
FFWDVN
MOC045-291600-
/O.NEW.KDVN.FF.W.0006.210629T0955Z-210629T1600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Quad Cities IA IL
455 AM CDT Tue Jun 29 2021
The National Weather Service in Quad Cities has issued a
* Flash Flood Warning for...
Clark County in northeastern Missouri...
* Until 1100 AM CDT Tuesday.
* At 455 AM CDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Between 0.5 and 1 inch of rain
has fallen. Additional rainfall amounts of 1 to 2 inches are
possible in the warned area. Flash flooding is ongoing or expected
to begin shortly.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar.
IMPACT...Flash flooding of small creeks and streams, urban
areas, highways, streets and underpasses as well as
other poor drainage and low-lying areas.
* Some locations that will experience flash flooding include...
Kahoka, Wayland, Wyaconda, Luray, St. Francisville, Revere,
Medill, Ashton, Clark County Fairgrounds, Neeper, Clark City,
Chambersburg, Peaksville, Antioch, Fairmont, Anson and Battle of
Athens Campground.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 4026 9195 4056 9194 4059 9170 4058 9169
4056 9169 4055 9165 4052 9162 4051 9162
4049 9159 4047 9158 4046 9156 4044 9154
4025 9166
FLASH FLOOD...RADAR INDICATED
$$
Uttech2 follow-up statements
626
WGUS73 KDVN 291045
FFSDVN
Flash Flood Statement
National Weather Service Quad Cities IA IL
545 AM CDT Tue Jun 29 2021
MOC045-291600-
/O.CON.KDVN.FF.W.0006.000000T0000Z-210629T1600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Clark MO-
545 AM CDT Tue Jun 29 2021
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 11 AM CDT THIS
MORNING FOR CLARK COUNTY...
At 545 AM CDT, Doppler radar indicated thunderstorms producing heavy
rain across the warned area. Between 0.5 and 1.5 inches of rain have
fallen. Additional rainfall of less than 1 inch is expected in the
warned area. Flash flooding is ongoing or expected to begin shortly.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar.
IMPACT...Flash flooding of small creeks and streams, urban areas,
highways, streets and underpasses as well as other poor
drainage and low-lying areas.
Some locations that will experience flash flooding include...
Kahoka, Wayland, Wyaconda, Luray, St. Francisville, Revere,
Medill, Ashton, Clark County Fairgrounds, Neeper, Clark City,
Chambersburg, Peaksville, Antioch, Fairmont, Anson and Battle of
Athens Campground.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 4026 9195 4056 9194 4059 9170 4058 9169
4056 9169 4055 9165 4052 9162 4051 9162
4049 9159 4047 9158 4046 9156 4044 9154
4025 9166
FLASH FLOOD...RADAR INDICATED
$$
Uttech432
WGUS73 KDVN 291134
FFSDVN
Flash Flood Statement
National Weather Service Quad Cities IA IL
634 AM CDT Tue Jun 29 2021
MOC045-291144-
/O.CAN.KDVN.FF.W.0006.000000T0000Z-210629T1600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Clark MO-
634 AM CDT Tue Jun 29 2021
...FLASH FLOOD WARNING IS CANCELLED FOR CLARK COUNTY...
The heavy rain has ended. Flooding is no longer expected to pose a
threat. Please do not attempt to drive through residual flood waters.
A Flash Flood Watch remains in effect until 700 PM CDT Tuesday for
portions of Illinois, Iowa and northeast Missouri.
LAT...LON 4026 9195 4056 9194 4059 9170 4058 9169
4056 9169 4055 9165 4052 9162 4051 9162
4049 9159 4047 9158 4046 9156 4044 9154
4025 9166
$$
UttechThe office that day
Everything else NWS Quad Cities, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 29, 4:20 AM CDT | Special Weather Statement | DVN | Clark, Scotland | 40 min |
Nearby
Flash Flood Warnings in Missouri, 2021Every flash flood warning 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.