Alert archive / Missouri / Flash Flood Warnings in 2020
Flash Flood Warning 1, NWS St. Louis, MO
NWS St. Louis, MO issued this flash flood warning at Jan 10, 2020, 6:52 PM CST for 6 counties in Missouri. It was in force for 6 hr. 3 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
- Jan 10, 2020, 6:52 PM CST (00:52 UTC)
- Expired
- Jan 11, 2020, 12:45 AM CST
- In force
- 6 hr
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
- Flood severity
- None
Counties Callaway County, MO, Gasconade County, MO, Lincoln County, MO, Montgomery County, MO, Osage County, MO, Warren County, MO
The radar
The St Louis radar (KLSX), 71 km from the middle of the area, began a volume at 00:54 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 |
|---|---|---|---|
| Jan 10, 7:45 PM CST | FLASH FLOOD | 2 Ese Truxton, MO | MODOT HAS CLOSED ROUTE A IN WARREN CO EAST OF TRUXTON AT CAMP CREEK DUE TO FLASH FLOODING. IT IS EXPECTED TO REMAIN CLOSED FOR A FEW DAYS. VIA TWITTER. |
| Jan 10, 8:45 PM CST | HEAVY RAIN 2.9 | 7 S Morrison, MO | RAINFALL FOR TODAY. |
| Jan 11, 12:21 AM CST | FLASH FLOOD | Westphalia, MO | MULTIPLE REPORTS ACROSS THE COUNTY OF ROADS UNDER WATER, INCLUDING AT HIGHWAYS E, W, AND 133. |
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, 0.9 hours before the alert went out and 289 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
- 1 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 506 m above ground
- 0-6 km bulk shear
- 66 kt
- 0-1 km storm-relative helicity
- 132 m²/s²
- 0-3 km storm-relative helicity
- 184 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
235
WGUS53 KLSX 110052
FFWLSX
MOC027-073-113-139-151-219-110645-
/O.NEW.KLSX.FF.W.0001.200111T0052Z-200111T0645Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service St Louis MO
652 PM CST Fri Jan 10 2020
The National Weather Service in St Louis has issued a
* Flash Flood Warning for...
Southwestern Lincoln County in east central Missouri...
Montgomery County in east central Missouri...
East central Callaway County in central Missouri...
Northeastern Osage County in central Missouri...
Northwestern Warren County in east central Missouri...
Northern Gasconade County in east central Missouri...
* Until 1245 AM CST.
* At 651 PM CST, Doppler radar indicated thunderstorms producing
heavy rain across the warned area. Up to two inches of rain have
already fallen. 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.
* Some locations that will experience flooding include...
Montgomery City, Hermann, Linn, Davis, New Florence, Jonesburg,
Hawk Point, Chamois, Bellflower, Westphalia, Big Spring, Mount
Sterling, Mineola, Gasconade, High Hill, Rhineland, Morrison,
Truxton, McKittrick and Cave.
Additional rainfall amounts of 2 to 3 inches are possible in the
warned area.
This also includes Deutschheim Historic Site.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 3909 9138 3908 9100 3840 9164 3841 9205
FLASH FLOOD...RADAR INDICATED
$$
Walsh1 follow-up statement
749
WGUS73 KLSX 110404
FFSLSX
Flash Flood Statement
National Weather Service St Louis MO
1004 PM CST Fri Jan 10 2020
MOC027-073-113-139-151-219-110645-
/O.CON.KLSX.FF.W.0001.000000T0000Z-200111T0645Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Lincoln MO-Montgomery MO-Callaway MO-Osage MO-Warren MO-Gasconade MO-
1004 PM CST Fri Jan 10 2020
...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1245 AM CST FOR
SOUTHWESTERN LINCOLN...MONTGOMERY...EAST CENTRAL CALLAWAY...
NORTHEASTERN OSAGE...NORTHWESTERN WARREN AND NORTHERN GASCONADE
COUNTIES...
At 1003 PM CST, Missouri Department of Transportation reported
Highway 94 was closed in Montgomery County. Up to three inches of
rain have already fallen. Flash flooding is ongoing.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Missouri Department of Transportation.
IMPACT...Flooding of small creeks and streams, urban areas,
highways, streets and underpasses as well as other drainage
and low lying areas.
Some locations that will experience flooding include...
Montgomery City, Hermann, Linn, Davis, New Florence, Jonesburg, Hawk
Point, Chamois, Bellflower, Westphalia, Big Spring, Mount Sterling,
Mineola, Gasconade, High Hill, Rhineland, Morrison, Truxton,
McKittrick and Cave.
Additional rainfall amounts of 1 to 2 inches are possible in the
warned area.
This also includes Deutschheim Historic Site.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
Be especially cautious at night when it is harder to recognize the
dangers of flooding.
&&
LAT...LON 3909 9138 3908 9100 3840 9164 3841 9205
FLASH FLOOD...OBSERVED
$$
KDThe office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 10, 6:09 PM CST | Tornado Warning | LSX | Franklin, Gasconade, Montgomery, Osage, Warren | 36 min |
| Jan 10, 6:35 PM CST | Tornado Warning | LSX | Franklin, Lincoln, Montgomery, Pike, Saint Charles, Warren | 40 min |
| Jan 10, 7:09 PM CST | Severe Thunderstorm Warning | LSX | Lincoln, Pike, Saint Charles | 51 min |
| Jan 10, 7:46 PM CST | Flash Flood Warning | LSX | Callaway, Cole, Osage | 6 hr |
| Jan 10, 9:25 PM CST | Areal Flood Warning | LSX | Audrain, Boone, Callaway, Cole, Moniteau, Montgomery and 1 more | 9 hr |
| Jan 10, 9:31 PM CST | Areal Flood Warning | LSX | Franklin, Gasconade, Lincoln, Saint Charles, Warren | 15 hr |
| Jan 10, 10:49 PM CST | Areal Flood Warning | LSX | Crawford, Franklin, Jefferson, Saint Charles, Saint Louis, Washington and 1 more | 15 hr |
| Jan 11, 12:36 AM CST | Areal Flood Warning | LSX | Callaway, Gasconade, Lincoln, Montgomery, Osage, Warren | 12 hr |
| Jan 11, 1:38 AM CST | Areal Flood Warning | LSX | Callaway, Cole, Osage | 9 hr |
| Jan 11, 2:28 AM CST | Areal Flood Advisory | LSX | Iron, Jefferson, Madison, Reynolds, Sainte Genevieve, Saint Francois | 11 hr |
| Jan 11, 4:47 AM CST | River Flood Warning | LSX | Crawford | 40 hr |
| Jan 11, 6:28 AM CST | River Flood Warning | LSX | Lincoln | 52 hr |
| Jan 11, 8:29 AM CST | River Flood Warning | LSX | Saint Charles | 4 days |
| Jan 11, 8:32 AM CST | River Flood Warning | LSX | Franklin, Warren | 3 days |
| Jan 11, 8:34 AM CST | River Flood Warning | LSX | Saint Charles, Saint Louis | 70 hr |
| Jan 11, 12:02 PM CST | River Flood Warning | LSX | Saint Charles | 5 days |
| Jan 11, 12:02 PM CST | River Flood Warning | LSX | Saint Louis, City of Saint Louis | 4 days |
| Jan 11, 12:29 PM CST | Areal Flood Warning | LSX | Callaway, Cole, Crawford, Franklin, Gasconade, Iron and 9 more | 23 hr |
| Jan 11, 1:43 PM CST | Areal Flood Warning | LSX | Iron, Jefferson, Madison, Reynolds, Sainte Genevieve, Saint Francois and 2 more | 22 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.