Alert archive / Missouri / Flash Flood Watches in 2019
Flash Flood Watch 16, NWS St. Louis, MO
NWS St. Louis, MO issued this flash flood watch at Aug 16, 2019, 1:21 PM CDT for 11 counties in Missouri; Adams County, Brown County, Pike County, Illinois. It took effect at Aug 16, 2019, 10:00 PM CDT. It was in force for 13 hr.
The area
The counties it named.
The facts
- Issued
- Aug 16, 2019, 1:21 PM CDT (18:21 UTC)
- In effect from
- Aug 16, 2019, 10:00 PM CDT
- Expired
- Aug 17, 2019, 11:09 AM CDT
- In force
- 13 hr
- Issued by
- NWS St. Louis, MO
- Flood severity
- None
Counties Adams County, IL, Brown County, IL, Pike County, IL, Audrain County, MO, Boone County, MO, Callaway County, MO, Knox County, MO, Lewis County, MO, Marion County, MO, Monroe County, MO, Montgomery County, MO, Pike County, MO, Ralls County, MO, Shelby County, MO
The radar
The St Louis radar (KLSX), 125 km from the middle of the area, began a volume at 18:21 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
Springfield, MO (KSGF), launched 12:00Z, 6.4 hours before the alert went out and 351 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
- 3 J/kg
- Mixed-layer CIN
- -235 J/kg
- Mixed-layer LCL
- 1556 m above ground
- 0-6 km bulk shear
- 42 kt
- 0-1 km storm-relative helicity
- -44 m²/s²
- 0-3 km storm-relative helicity
- -1 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.0
What forecasters said that day
The local office's own words before this flash flood watch went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS St. Louis, MO wrote its last area forecast discussion before this flash flood watch went out at Aug 16, 1:17 PM CDT, 4 minutes earlier.
Area forecast discussion, Aug 16, 1:17 PM CDT, 4 minutes before
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</html>Hazardous weather outlook, Aug 16, 5:11 AM CDT, 8 hours 10 minutes before
Hazardous Weather Outlook National Weather Service Saint Louis MO 511 AM CDT Fri Aug 16 2019 ILZ058>060-064-065-069-070-074-079-095>102-MOZ018-019-026-027- 034>036-041-042-047>052-059>065-072>075-084-085-099-171015- Adams IL-Audrain MO-Bond IL-Boone MO-Brown IL-Calhoun IL-Callaway MO- Clinton IL-Cole MO-Crawford MO-Fayette IL-Franklin MO-Gasconade MO- Greene IL-Iron MO-Jefferson MO-Jersey IL-Knox MO-Lewis MO-Lincoln MO- Macoupin IL-Madison IL-Madison MO-Marion IL-Marion MO-Moniteau MO- Monroe IL-Monroe MO-Montgomery IL-Montgomery MO-Osage MO-Pike IL- Pike MO-Ralls MO-Randolph IL-Reynolds MO-Saint Charles MO- Saint Clair IL-Saint Francois MO-Saint Louis City MO-Saint Louis MO- Sainte Genevieve MO-Shelby MO-Warren MO-Washington IL-Washington MO- 511 AM CDT Fri Aug 16 2019 This Hazardous Weather Outlook is for portions of eastern and central Missouri as well as west central and southwest Illinois. .DAY ONE...Today and tonight. Thunderstorms are likely later today and tonight. Some of these storms may be severe with damaging winds, large hail, and isolated tornadoes possible mainly Friday evening. Heavy rainfall is also possible. .DAYS TWO THROUGH SEVEN...Saturday through Thursday. The chance of thunderstorms will continue across parts of the area through Sunday. A few of these storms through Sunday could be severe. There is also a chance of thunderstorms Tuesday through Thursday. Heat index readings over parts of central and east central Missouri as well as southwest Illinois on Monday through Wednesday will climb to around 105 degrees. .SPOTTER INFORMATION STATEMENT... Spotter activation may be needed this afternoon and tonight. Britt
The office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 16, 9:47 AM CDT | River Flood Warning | LSX | Callaway, Osage | 27 days |
| Aug 16, 9:47 AM CDT | River Flood Warning | LSX | Gasconade, Montgomery | 28 days |
| Aug 16, 9:47 AM CDT | River Flood Warning | LSX | Gasconade, Montgomery | 8 days |
Nearby
Flash Flood Watches in Missouri, 2019Flash Flood Watches in Illinois, 2019Every flash flood watch in 2019
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.