Alert archive / Missouri / Flash Flood Warnings in 2017
Flash Flood Warning 9, NWS St. Louis, MO
NWS St. Louis, MO issued this flash flood warning at May 1, 2017, 4:16 AM CDT for Lincoln County, Saint Charles County, Missouri. It was in force for 6 hr. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- May 1, 2017, 4:16 AM CDT (09:16 UTC)
- Expired
- May 1, 2017, 10:15 AM CDT
- In force
- 6 hr
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
- Flood severity
- Unknown
Counties Lincoln County, MO, Saint Charles County, MO
The radar
The St Louis radar (KLSX), 26 km from the middle of the area, began a volume at 09:15 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 nearest sounding before it
Lincoln, IL (KILX), launched 00:00Z, 9.3 hours before the alert went out and 228 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
- 267 J/kg
- Mixed-layer CIN
- -51 J/kg
- Mixed-layer LCL
- 696 m above ground
- 0-6 km bulk shear
- 66 kt
- 0-1 km storm-relative helicity
- 459 m²/s²
- 0-3 km storm-relative helicity
- 418 m²/s²
- Significant tornado parameter
- 0.6
- Supercell composite
- 5.7
The text
As transmitted.
773 WGUS53 KLSX 010916 FFWLSX MOC113-183-011515- /O.NEW.KLSX.FF.W.0009.170501T0916Z-170501T1515Z/ /00000.U.DM.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED Flash Flood Warning National Weather Service St Louis MO 416 AM CDT MON MAY 1 2017 The National Weather Service in St Louis has issued a * Flash Flood Warning for... A Levee Failure in... Northwestern St. Charles County in east central Missouri... Southeastern Lincoln County in east central Missouri... * Until 1015 AM CDT. * At 415 AM CDT, local law enforcement reported a levee on the Cuivre River on the west side of Highway 79 has failed causing flash flooding of immediately surrounding areas. 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 3895 9072 3890 9072 3890 9077 3895 9077 $$ Kanofsky
1 follow-up statement
123 WGUS73 KLSX 011513 FFSLSX Flash Flood Statement National Weather Service St Louis MO 1013 AM CDT MON MAY 1 2017 MOC113-183-011519- /O.EXP.KLSX.FF.W.0009.000000T0000Z-170501T1515Z/ /00000.0.DM.000000T0000Z.000000T0000Z.000000T0000Z.OO/ St. Charles MO-Lincoln MO- 1013 AM CDT MON MAY 1 2017 ...THE FLASH FLOOD WARNING FOR NORTHWESTERN ST. CHARLES AND SOUTHEASTERN LINCOLN COUNTIES WILL EXPIRE AT 1015 AM CDT... The flash flood warning that was issued for a levee failure on the Cuivre River will be allowed to expire. An areal flood warning for the entire county as well as a river flood warning for the Cuivre River remains in effect. Please continue to heed any remaining road closures. Never drive through barricades or into any flooded roadways. LAT...LON 3895 9072 3890 9072 3890 9077 3895 9077 $$ Glass
The office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 30, 9:01 PM CDT | Areal Flood Warning | LSX | Franklin, Gasconade, Jefferson, Saint Charles, Sainte Genevieve, Saint Louis and 2 more | 12 hr |
| Apr 30, 11:00 PM CDT | Areal Flood Warning | LSX | Audrain, Gasconade, Lincoln, Marion, Monroe, Montgomery and 4 more | 12 hr |
| May 1, 4:44 AM CDT | Areal Flood Warning | LSX | Crawford, Iron, Madison, Reynolds, Sainte Genevieve, Saint Francois and 1 more | 12 hr |
| May 1, 8:59 AM CDT | Areal Flood Warning | LSX | Franklin, Gasconade, Jefferson, Saint Charles, Sainte Genevieve, Saint Louis and 2 more | 4 days |
| May 1, 9:29 AM CDT | Areal Flood Warning | LSX | Audrain, Boone, Callaway, Cole, Moniteau, Osage | 24 hr |
| May 1, 10:58 AM CDT | Areal Flood Warning | LSX | Audrain, Gasconade, Lincoln, Marion, Monroe, Montgomery and 4 more | 24 hr |
| May 1, 4:42 PM CDT | Areal Flood Warning | LSX | Crawford, Iron, Madison, Reynolds, Sainte Genevieve, Saint Francois and 1 more | 24 hr |
Nearby
Flash Flood Warnings in Missouri, 2017Every flash flood warning in 2017
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.