Alert archive / Missouri / Heat Advisories in 2006

Heat Advisory 2, NWS St. Louis, MO

July 13, 2006City of Saint Louis, Missouri

NWS St. Louis, MO issued this heat advisory at Jul 13, 2006, 10:40 AM CDT for City of Saint Louis, Missouri. It took effect at Jul 13, 2006, 12:00 PM CDT. It was in force for 6 hr.

The area

The counties it named.

The facts

Issued: Jul 13, 2006, 10:40 AM CDT (15:40 UTC)
In effect from: Jul 13, 2006, 12:00 PM CDT
Expired: Jul 13, 2006, 6:00 PM CDT
In force: 6 hr
Issued by: NWS St. Louis, MO

County City of Saint Louis, MO

The radar

The St Louis radar (KLSX), 43 km from the middle of the area, began a volume at 15:45 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, 3.7 hours before the alert went out and 218 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 495 J/kg
Mixed-layer CIN: -79 J/kg
Mixed-layer LCL: 769 m above ground
0-6 km bulk shear: 8 kt
0-1 km storm-relative helicity: 27 m²/s²
0-3 km storm-relative helicity: 36 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

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 Jul 13, 6:10 AM CDT, 4 hours 30 minutes earlier.

Area forecast discussion, Jul 13, 6:10 AM CDT, 4 hours 30 minutes before

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Hazardous weather outlook, Jul 13, 5:56 AM CDT, 4 hours 44 minutes before

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      <div class="status" id="status">Temporary Notice</div>
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        The site you requested is temporarily down for maintenance or an unexpected outage.
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The office that day

Everything else NWS St. Louis, MO issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 13, 2:09 PM CDT	Severe Thunderstorm Warning	LSX	Sainte Genevieve, Saint Francois	51 min
Jul 13, 2:50 PM CDT	Severe Thunderstorm Warning	LSX	Jefferson, Washington	40 min
Jul 13, 3:09 PM CDT	Excessive Heat Watch	LSX	Saint Charles, Saint Louis, City of Saint Louis	13 hr
Jul 13, 3:19 PM CDT	Severe Thunderstorm Warning	LSX	Franklin	41 min
Jul 13, 3:42 PM CDT	Severe Thunderstorm Warning	LSX	Lewis, Marion, Shelby	63 min
Jul 13, 3:54 PM CDT	Severe Thunderstorm Warning	LSX	Franklin	66 min
Jul 13, 4:10 PM CDT	Severe Thunderstorm Warning	LSX	Callaway	50 min
Jul 13, 4:26 PM CDT	Severe Thunderstorm Warning	LSX	Audrain, Boone	49 min
Jul 13, 4:46 PM CDT	Severe Thunderstorm Warning	LSX	Lewis, Marion	44 min
Jul 13, 4:54 PM CDT	Severe Thunderstorm Warning	LSX	Franklin, Warren	51 min
Jul 13, 5:22 PM CDT	Severe Thunderstorm Warning	LSX	Montgomery	38 min
Jul 13, 5:40 PM CDT	Severe Thunderstorm Warning	LSX	Callaway	50 min
Jul 13, 5:23 PM CDT	Severe Thunderstorm Warning	LSX	Adams, Pike	67 min
Jul 13, 6:30 PM CDT	Severe Thunderstorm Warning	LSX	Pike	30 min

Nearby

Heat Advisories in Missouri, 2006 Every heat advisory in 2006

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.