Alert archive / Missouri / Special Weather Statements in 2018
Special Weather Statement, NWS St. Louis, MO
NWS St. Louis, MO issued this special weather statement at Oct 6, 2018, 2:29 PM CDT for Washington County, Missouri. It was in force for 46 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Oct 6, 2018, 2:29 PM CDT (19:29 UTC)
- Expired
- Oct 6, 2018, 3:15 PM CDT
- In force
- 46 min
- Issued by
- NWS St. Louis, MO
County Washington County, MO
The radar
The St Louis radar (KLSX), 81 km from the middle of the area, began a volume at 19:31 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, 7.5 hours before the alert went out and 290 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
- 710 J/kg
- Mixed-layer CIN
- -26 J/kg
- Mixed-layer LCL
- 758 m above ground
- 0-6 km bulk shear
- 29 kt
- 0-1 km storm-relative helicity
- 258 m²/s²
- 0-3 km storm-relative helicity
- 243 m²/s²
- Significant tornado parameter
- 0.6
- Supercell composite
- 4.0
The text
As transmitted.
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</html>What forecasters said that day
The local office's own words before this special weather statement 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 special weather statement went out at Oct 6, 1:37 PM CDT, 52 minutes earlier.
Area forecast discussion, Oct 6, 1:37 PM CDT, 52 minutes before
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</html>Hazardous weather outlook, Oct 6, 9:25 AM CDT, 5 hours 4 minutes before
Hazardous Weather Outlook National Weather Service Saint Louis MO 925 AM CDT Sat Oct 6 2018 ILZ058>060-064-065-069-070-074-079-095>102-MOZ018-019-026-027- 034>036-041-042-047>052-059>065-072>075-084-085-099-071200- 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- 925 AM CDT Sat Oct 6 2018 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. Scattered severe thunderstorms are possible, especially over portions of southwestern Illinois this afternoon through early evening. The primary threat is expected to damaging wind gusts to 60 mph. .DAYS TWO THROUGH SEVEN...Sunday through Friday. There is a chance for thunderstorms over parts of the area Sunday through Wednesday night. .SPOTTER INFORMATION STATEMENT... Spotter activation may be needed this afternoon through early evening. Byrd
In the hours before
Special weather statement, Oct 6, 2:29 PM CDT, 0 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 |
|---|---|---|---|---|
| Oct 6, 10:35 AM CDT | River Flood Warning | LSX | Lincoln | 22 days |
| Oct 6, 11:46 AM CDT | River Flood Warning | LSX | Lewis | 19 days |
| Oct 6, 5:47 PM CDT | Special Weather Statement | LSX | Washington | 43 min |
| Oct 6, 6:26 PM CDT | Special Weather Statement | LSX | Washington | 49 min |
Nearby
Special Weather Statements in Missouri, 2018Every special weather statement in 2018
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.