Alert archive / Missouri / Flash Flood Warnings in 2020
Flash Flood Warning 36, NWS St. Louis, MO
NWS St. Louis, MO issued this flash flood warning at Jul 3, 2020, 3:46 AM CDT for Crawford County, Missouri. It was in force for 6 hr. 2 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Jul 3, 2020, 3:46 AM CDT (08:46 UTC)
- Expired
- Jul 3, 2020, 9:45 AM CDT
- In force
- 6 hr
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
- Flood severity
- None
County Crawford County, MO
The radar
The St Louis radar (KLSX), 97 km from the middle of the area, began a volume at 08:46 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 3, 5:15 AM CDT | HEAVY RAIN 2.6 | Cuba, MO | MESONET STATION FW1328 CUBA. |
| Jul 3, 6:25 AM CDT | FLASH FLOOD | 3 Wnw Cuba, MO | LAKESHORE DRIVE AROUND INDIAN LAKE ALONG THE DAM (NORTH SIDE) AND BRIDGE (SOUTH) ARE IMPASSABLE DUE TO WATER, CUTTING OFF ACCESS TO PART OF THE COMMUNITY. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Lincoln, IL (KILX), launched 00:00Z, 8.8 hours before the alert went out and 338 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
- 182 J/kg
- Mixed-layer CIN
- -128 J/kg
- Mixed-layer LCL
- 1743 m above ground
- 0-6 km bulk shear
- 6 kt
- 0-1 km storm-relative helicity
- -12 m²/s²
- 0-3 km storm-relative helicity
- 2 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
246
WGUS53 KLSX 030846
FFWLSX
MOC055-031445-
/O.NEW.KLSX.FF.W.0036.200703T0846Z-200703T1445Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service St Louis MO
346 AM CDT Fri Jul 3 2020
The National Weather Service in St Louis has issued a
* Flash Flood Warning for...
Northwestern Crawford County in east central Missouri...
* Until 945 AM CDT Friday.
* At 344 AM CDT, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Over two inches of rain have
already fallen just north of Rosati. Flash flooding is ongoing or
expected to begin shortly.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar indicated.
IMPACT...Flooding of small creeks and streams, urban areas,
highways, streets and underpasses as well as other
drainage and low lying areas.
Additional rainfall amounts over one inch are possible in the warned
area.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Be especially cautious at night when it is harder to recognize the
dangers of flooding.
Excessive runoff from heavy rainfall will cause flooding of small
creeks and streams, country roads, farmland, and other low lying
spots.
&&
LAT...LON 3815 9153 3815 9140 3799 9141 3799 9152
FLASH FLOOD...RADAR INDICATED
$$
Maples1 follow-up statement
818
WGUS73 KLSX 031218
FFSLSX
Flash Flood Statement
National Weather Service St Louis MO
718 AM CDT Fri Jul 3 2020
MOC055-031445-
/O.CON.KLSX.FF.W.0036.000000T0000Z-200703T1445Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Crawford MO-
718 AM CDT Fri Jul 3 2020
...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 945 AM CDT FRIDAY
FOR NORTHWESTERN CRAWFORD COUNTY...
At 712 AM CDT, law enforcement reported flash flooding near Cuba,
Missouri. Parts of the community around the Indian Lake are
impassable due to high water. Radar estimates as high as three to
five inches of rain have fallen since 300 AM.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Law enforcement.
IMPACT...Flooding of small creeks and streams, urban areas,
highways, streets and underpasses as well as other drainage
and low lying areas.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Excessive runoff from heavy rainfall will cause flooding of small
creeks and streams, country roads, farmland, and other low lying
spots.
&&
LAT...LON 3815 9153 3815 9140 3799 9141 3799 9152
FLASH FLOOD...OBSERVED
$$
MRMThe office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 2, 10:11 PM CDT | Areal Flood Advisory | LSX | Lincoln, Pike | 3 hr |
| Jul 3, 3:29 AM CDT | Areal Flood Advisory | LSX | Crawford, Gasconade | 3 hr |
| Jul 3, 4:42 AM CDT | Areal Flood Advisory | LSX | Crawford | 3 hr |
| Jul 3, 7:35 AM CDT | Areal Flood Advisory | LSX | Marion, Ralls | 3 hr |
| Jul 3, 9:40 AM CDT | Areal Flood Warning | LSX | Crawford | 6 hr |
| Jul 3, 5:11 PM CDT | Areal Flood Advisory | LSX | Lincoln, Montgomery, Pike | 3 hr |
| Jul 3, 6:17 PM CDT | Areal Flood Advisory | LSX | Callaway | 3 hr |
Nearby
Flash Flood Warnings in Missouri, 2020Every flash flood warning in 2020
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.