Alert archive / Missouri / Areal Flood Advisories in 2021
Areal Flood Advisory 51, NWS St. Louis, MO
NWS St. Louis, MO issued this areal flood advisory at Jul 12, 2021, 1:12 PM CDT for Lincoln County, Missouri. It was in force for 3 hr.
The area
The counties it named.
The facts
- Issued
- Jul 12, 2021, 1:12 PM CDT (18:12 UTC)
- Expired
- Jul 12, 2021, 4:15 PM CDT
- In force
- 3 hr
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
County Lincoln County, MO
The radar
The St Louis radar (KLSX), 47 km from the middle of the area, began a volume at 18:12 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 12:00Z, 6.2 hours before the alert went out and 236 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
- 653 J/kg
- Mixed-layer CIN
- -21 J/kg
- Mixed-layer LCL
- 548 m above ground
- 0-6 km bulk shear
- 20 kt
- 0-1 km storm-relative helicity
- 80 m²/s²
- 0-3 km storm-relative helicity
- 102 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this areal flood advisory 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 areal flood advisory went out at Jul 12, 12:01 PM CDT, 1 hour 11 minutes earlier.
Area forecast discussion, Jul 12, 12:01 PM CDT, 1 hour 11 minutes before
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</html>Hazardous weather outlook, Jul 12, 3:40 AM CDT, 9 hours 32 minutes before
Hazardous Weather Outlook National Weather Service Saint Louis MO 340 AM CDT Mon Jul 12 2021 ILZ058>060-064-065-069-070-074-079-095>102-MOZ018-019-026-027- 034>036-041-042-047>052-059>065-072>075-084-085-099-131200- 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-Saint Francois MO-Saint Louis City MO-Saint Louis MO- Sainte Genevieve MO-Shelby MO-Warren MO-Washington IL-Washington MO- 340 AM CDT Mon Jul 12 2021 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. Strong to severe thunderstorms are possible this afternoon through early evening, mainly over portions of southwestern Illinois. Damaging winds and locally heavy rainfall are the main threats. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday. Additional thunderstorms are possible across portions of the area Tuesday through Sunday. .SPOTTER INFORMATION STATEMENT... Spotter activation may be needed this afternoon through early evening. Byrd
In the hours before
Local storm report, Jul 12, 8:05 AM CDT, 5 hours 7 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 |
|---|---|---|---|---|
| Jul 11, 8:05 PM CDT | River Flood Warning | LSX | Lewis | 58 hr |
| Jul 12, 1:42 AM CDT | Areal Flood Advisory | LSX | Franklin | 5 hr |
| Jul 12, 3:46 AM CDT | Areal Flood Advisory | LSX | Warren | 40 min |
| Jul 12, 4:26 AM CDT | Flash Flood Warning | LSX | Warren | 4 hr |
| Jul 12, 5:09 AM CDT | Flash Flood Warning | LSX | Saint Charles | 4 hr |
| Jul 12, 5:56 AM CDT | Areal Flood Advisory | LSX | Callaway, Gasconade, Osage | 5 hr |
| Jul 12, 2:14 PM CDT | Flash Flood Warning | LSX | Lincoln, Montgomery | 4 hr |
| Jul 12, 6:27 PM CDT | Areal Flood Advisory | LSX | Pike | 3 hr |
| Jul 11, 7:50 PM CDT | Areal Flood Advisory | LSX | Monroe, Randolph, Saint Clair | 3 hr |
| Jul 11, 10:43 PM CDT | Areal Flood Advisory | LSX | Macoupin | 3 hr |
| Jul 12, 12:17 AM CDT | Areal Flood Advisory | LSX | Montgomery | 3 hr |
| Jul 12, 6:50 PM CDT | Flash Flood Warning | LSX | Montgomery | 4 hr |
Nearby
Areal Flood Advisories in Missouri, 2021Every areal flood advisory in 2021
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.