Alert archive / Missouri / Heat Advisories in 2005
Heat Advisory 1, NWS St. Louis, MO
NWS St. Louis, MO issued this heat advisory at Aug 11, 2005, 8:36 AM CDT for Saint Charles County, Saint Louis County, City of Saint Louis, Missouri; Madison County, Saint Clair County, Illinois. It took effect at Aug 11, 2005, 1:00 PM CDT. It was in force for 3 hr.
The area
The counties it named.
The facts
- Issued
- Aug 11, 2005, 8:36 AM CDT (13:36 UTC)
- In effect from
- Aug 11, 2005, 1:00 PM CDT
- Expired
- Aug 11, 2005, 3:46 PM CDT
- In force
- 3 hr
- Issued by
- NWS St. Louis, MO
Counties Madison County, IL, Saint Clair County, IL, City of Saint Louis, MO, Saint Charles County, MO, Saint Louis County, MO
The radar
The St Louis radar (KLSX), 39 km from the middle of the area, began a volume at 13:37 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, 1.6 hours before the alert went out and 216 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
- 757 J/kg
- Mixed-layer CIN
- -151 J/kg
- Mixed-layer LCL
- 1384 m above ground
- 0-6 km bulk shear
- 22 kt
- 0-1 km storm-relative helicity
- 78 m²/s²
- 0-3 km storm-relative helicity
- 73 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this heat 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 heat advisory went out at Aug 11, 3:51 AM CDT, 4 hours 45 minutes earlier.
Area forecast discussion, Aug 11, 3:51 AM CDT, 4 hours 45 minutes before
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</html>Hazardous weather outlook, Aug 11, 5:59 AM CDT, 2 hours 37 minutes before
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</html>Nearby
Heat Advisories in Missouri, 2005Heat Advisories in Illinois, 2005Every heat advisory in 2005
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.