Alert archive / Missouri / Severe Thunderstorm Warnings in 2010

Severe Thunderstorm Warning 185, NWS St. Louis, MO

July 19, 2010Gasconade County, Osage County, Missouri

NWS St. Louis, MO issued this severe thunderstorm warning at Jul 19, 2010, 5:32 PM CDT for Gasconade County, Osage County, Missouri. It was in force for 30 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: Jul 19, 2010, 5:32 PM CDT (22:32 UTC)
Expired: Jul 19, 2010, 6:02 PM CDT
In force: 30 min
Issued by: NWS St. Louis, MO
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Gasconade County, MO, Osage County, MO

The radar

The St Louis radar (KLSX), 91 km from the middle of the area, began a volume at 22:34 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, 10.5 hours before the alert went out and 326 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: 248 J/kg
Mixed-layer CIN: -358 J/kg
Mixed-layer LCL: 1088 m above ground
0-6 km bulk shear: 29 kt
0-1 km storm-relative helicity: 52 m²/s²
0-3 km storm-relative helicity: 97 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 severe thunderstorm warning 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 severe thunderstorm warning went out at Jul 19, 4:35 PM CDT, 57 minutes earlier.

Area forecast discussion, Jul 19, 4:35 PM CDT, 57 minutes before

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Hazardous weather outlook, Jul 19, 3:58 PM CDT, 1 hour 34 minutes before

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In the hours before

Local storm report, Jul 19, 3:29 PM CDT, 2 hours 3 minutes before

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Special weather statement, Jul 19, 3:29 PM CDT, 2 hours 3 minutes before

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Special weather statement, Jul 19, 3:47 PM CDT, 1 hour 45 minutes before

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Special weather statement, Jul 19, 4:31 PM CDT, 1 hour 1 minute before

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Local storm report, Jul 19, 5:19 PM CDT, 13 minutes before

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Special weather statement, Jul 19, 5:26 PM CDT, 6 minutes before

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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 18, 8:35 PM CDT	Severe Thunderstorm Warning	LSX	Crawford	40 min
Jul 18, 9:14 PM CDT	Flash Flood Warning	LSX	Crawford, Washington	6 hr
Jul 18, 11:43 PM CDT	Flash Flood Warning	LSX	Iron, Reynolds	6 hr
Jul 19, 3:02 AM CDT	Flash Flood Warning	LSX	Crawford	7 hr
Jul 19, 5:13 AM CDT	Flash Flood Warning	LSX	Iron, Reynolds	5 hr
Jul 19, 5:18 AM CDT	Severe Thunderstorm Warning	LSX	Crawford, Franklin, Washington	42 min
Jul 19, 6:59 AM CDT	Severe Thunderstorm Warning	LSX	Franklin, Saint Charles, Saint Louis, Warren	76 min
Jul 19, 9:56 AM CDT	Areal Flood Warning	LSX	Crawford	12 hr
Jul 19, 9:59 AM CDT	River Flood Warning	LSX	Gasconade, Montgomery	26 hr
Jul 19, 10:00 AM CDT	Flash Flood Warning	LSX	Lewis	3 hr
Jul 19, 10:42 AM CDT	Severe Thunderstorm Warning	LSX	Audrain, Boone, Marion, Monroe, Pike, Ralls	63 min
Jul 19, 11:06 AM CDT	River Flood Warning	LSX	Marion	38 days
Jul 19, 11:37 AM CDT	Severe Thunderstorm Warning	LSX	Lincoln, Pike	53 min
Jul 19, 12:28 PM CDT	Areal Flood Advisory	LSX	Audrain, Boone, Monroe	4 hr
Jul 19, 11:56 AM CDT	Areal Flood Advisory	LSX	Adams, Brown	4 hr
Jul 19, 12:13 PM CDT	Severe Thunderstorm Warning	LSX	Greene, Jersey, Macoupin, Montgomery	47 min
Jul 19, 2:00 PM CDT	Severe Thunderstorm Warning	LSX	Madison, Saint Clair	30 min
Jul 19, 5:42 PM CDT	Areal Flood Advisory	LSX	Adams	6 hr

Nearby

Severe Thunderstorm Warnings in Missouri, 2010 Every severe thunderstorm warning in 2010

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.