Alert archive / Missouri / Severe Thunderstorm Warnings in 2009

Severe Thunderstorm Warning 108, NWS Springfield, MO

May 1, 20094 counties in Missouri

NWS Springfield, MO issued this severe thunderstorm warning at May 1, 2009, 8:44 PM CDT for 4 counties in Missouri. It was in force for 24 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: May 1, 2009, 8:44 PM CDT (01:44 UTC)
Expired: May 1, 2009, 9:08 PM CDT
In force: 24 min
Issued by: NWS Springfield, MO
Area: Storm-based polygon

Counties Barry County, MO, Christian County, MO, Lawrence County, MO, Stone County, MO

The radar

The Springfield radar (KSGF), 42 km from the middle of the area, began a volume at 01:46 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 00:00Z, 1.7 hours before the alert went out and 20 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: 8 J/kg
Mixed-layer CIN: 0 J/kg
Mixed-layer LCL: 445 m above ground
0-6 km bulk shear: 57 kt
0-1 km storm-relative helicity: 146 m²/s²
0-3 km storm-relative helicity: 321 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning 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 severe thunderstorm warning went out at May 1, 6:15 PM CDT, 2 hours 29 minutes earlier.

Area forecast discussion, May 1, 6:15 PM CDT, 2 hours 29 minutes before

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Hazardous weather outlook, May 1, 3:33 PM CDT, 5 hours 11 minutes before

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In the hours before

Local storm report, May 1, 4:38 PM CDT, 4 hours 6 minutes before

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Local storm report, May 1, 4:58 PM CDT, 3 hours 46 minutes before

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Local storm report, May 1, 5:35 PM CDT, 3 hours 9 minutes before

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Local storm report, May 1, 5:47 PM CDT, 2 hours 57 minutes before

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Local storm report, May 1, 6:20 PM CDT, 2 hours 24 minutes before

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Local storm report, May 1, 6:56 PM CDT, 1 hour 48 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
May 1, 7:03 PM CDT	Severe Thunderstorm Warning	SGF	Christian, Taney	23 min
May 2, 1:26 AM CDT	River Flood Warning	SGF	Cedar	23 hr
May 2, 6:54 AM CDT	River Flood Warning	SGF	Pulaski	51 hr
May 2, 8:56 AM CDT	Areal Flood Warning	SGF	Barry, Barton, Jasper, Lawrence, McDonald, Newton	10 hr
May 2, 6:55 PM CDT	Areal Flood Warning	SGF	Cherokee	18 hr

Nearby

Severe Thunderstorm Warnings in Missouri, 2009 Every severe thunderstorm warning in 2009

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.