Alert archive / Illinois / Flash Flood Watches in 2019
Flash Flood Watch 11, NWS St. Louis, MO
NWS St. Louis, MO issued this flash flood watch at Jun 19, 2019, 3:17 AM CDT for 7 counties in Missouri; 13 counties in Illinois. It was in force for 17 hr.
The area
The counties it named.
The facts
- Issued
- Jun 19, 2019, 3:17 AM CDT (08:17 UTC)
- Expired
- Jun 19, 2019, 8:10 PM CDT
- In force
- 17 hr
- Issued by
- NWS St. Louis, MO
- Flood severity
- None
Counties Adams County, IL, Bond County, IL, Brown County, IL, Calhoun County, IL, Clinton County, IL, Fayette County, IL, Greene County, IL, Jersey County, IL, Macoupin County, IL, Madison County, IL, Marion County, IL, Montgomery County, IL, Pike County, IL, Knox County, MO, Lewis County, MO, Marion County, MO, Monroe County, MO, Pike County, MO, Ralls County, MO, Shelby County, MO
The radar
The St Louis radar (KLSX), 77 km from the middle of the area, began a volume at 08:21 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 00:00Z, 8.3 hours before the alert went out and 392 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
- 541 J/kg
- Mixed-layer CIN
- -46 J/kg
- Mixed-layer LCL
- 1213 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- 29 m²/s²
- 0-3 km storm-relative helicity
- 54 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 0.6
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 Jun 18, 11:27 PM CDT, 3 hours 50 minutes earlier.
Area forecast discussion, Jun 18, 11:27 PM CDT, 3 hours 50 minutes before
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</html>Hazardous weather outlook, Jun 18, 3:47 PM CDT, 11 hours 30 minutes before
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</html>The office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 19, 8:02 AM CDT | Flash Flood Warning | LSX | Marion, Monroe, Shelby | 3 hr |
| Jun 19, 9:59 AM CDT | River Flood Warning | LSX | Marion | 28 hr |
| Jun 19, 9:59 AM CDT | River Flood Warning | LSX | Marion | 23 hr |
| Jun 19, 11:11 AM CDT | Areal Flood Warning | LSX | Marion, Shelby | 6 hr |
| Jun 19, 12:06 PM CDT | Areal Flood Warning | LSX | Lewis | 5 hr |
| Jun 19, 9:09 AM CDT | Flash Flood Warning | LSX | Adams | 3 hr |
Nearby
Flash Flood Watches in Illinois, 2019Flash Flood Watches in Missouri, 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.