Alert archive / Missouri / Heat Advisories in 2005

Heat Advisory 3, NWS Springfield, MO

August 20, 2005Oregon County, Shannon County, Missouri

NWS Springfield, MO issued this heat advisory at Aug 20, 2005, 2:56 AM CDT for Oregon County, Shannon County, Missouri. It was in force for 13 hr.

The area

The counties it named.

The facts

Issued: Aug 20, 2005, 2:56 AM CDT (07:56 UTC)
Expired: Aug 20, 2005, 3:28 PM CDT
In force: 13 hr
Issued by: NWS Springfield, MO

Counties Oregon County, MO, Shannon County, MO

The radar

The Springfield radar (KSGF), 181 km from the middle of the area, began a volume at 07:59 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 00:00Z, 7.9 hours before the alert went out and 434 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: 1513 J/kg
Mixed-layer CIN: -23 J/kg
Mixed-layer LCL: 1449 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: 78 m²/s²
0-3 km storm-relative helicity: 190 m²/s²
Significant tornado parameter: 0.6
Supercell composite: 13.6

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 Springfield, MO wrote its last area forecast discussion before this heat advisory went out at Aug 20, 2:50 AM CDT, 6 minutes earlier.

Area forecast discussion, Aug 20, 2:50 AM CDT, 6 minutes before

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Hazardous weather outlook, Aug 19, 7:50 PM CDT, 7 hours 6 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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        Please try again in a few minutes.
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The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 20, 1:02 PM CDT	Severe Thunderstorm Warning	SGF	McDonald	38 min
Aug 20, 2:39 PM CDT	Severe Thunderstorm Warning	SGF	Stone, Taney	49 min
Aug 20, 3:42 PM CDT	Severe Thunderstorm Warning	SGF	Taney	24 min
Aug 20, 3:44 PM CDT	Severe Thunderstorm Warning	SGF	Douglas	46 min
Aug 20, 4:22 PM CDT	Flash Flood Warning	SGF	Howell, Ozark	6 hr
Aug 20, 5:36 PM CDT	Severe Thunderstorm Warning	SGF	Wright	47 min

Nearby

Heat Advisories in Missouri, 2005 Every 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.