Alert archive / Missouri / Freeze Warnings in 2009

Freeze Warning 4, NWS Springfield, MO

April 5, 200934 counties in Missouri; Bourbon County, Cherokee County, Crawford County, Kansas

NWS Springfield, MO issued this freeze warning at Apr 5, 2009, 2:40 PM CDT for 34 counties in Missouri; Bourbon County, Cherokee County, Crawford County, Kansas. It took effect at Apr 6, 2009, 7:00 PM CDT. It was in force for 14 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Apr 5, 2009, 2:40 PM CDT (19:40 UTC)
In effect from: Apr 6, 2009, 7:00 PM CDT
Expired: Apr 7, 2009, 9:00 AM CDT
In force: 14 hr
Issued by: NWS Springfield, MO

All 37 counties

Bourbon County, KS, Cherokee County, KS, Crawford County, KS, Barry County, MO, Barton County, MO, Benton County, MO, Camden County, MO, Cedar County, MO, Christian County, MO, Dade County, MO, Dallas County, MO, Dent County, MO, Douglas County, MO, Greene County, MO, Hickory County, MO, Howell County, MO, Jasper County, MO, Laclede County, MO, Lawrence County, MO, Maries County, MO, McDonald County, MO, Miller County, MO, Morgan County, MO, Newton County, MO, Oregon County, MO, Ozark County, MO, Phelps County, MO, Polk County, MO, Pulaski County, MO, Shannon County, MO, St. Clair County, MO, Stone County, MO, Taney County, MO, Texas County, MO, Vernon County, MO, Webster County, MO, Wright County, MO

The radar

The Springfield radar (KSGF), 30 km from the middle of the area, began a volume at 19:42 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 12:00Z, 7.7 hours before the alert went out and 82 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1695 m above ground
0-6 km bulk shear: 77 kt
0-1 km storm-relative helicity: 136 m²/s²
0-3 km storm-relative helicity: 202 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 freeze 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 freeze warning went out at Apr 5, 1:26 PM CDT, 1 hour 14 minutes earlier.

Area forecast discussion, Apr 5, 1:26 PM CDT, 1 hour 14 minutes before

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Hazardous weather outlook, Apr 5, 12:53 PM CDT, 1 hour 47 minutes before

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In the hours before

Local storm report, Apr 5, 9:11 AM CDT, 5 hours 29 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
Apr 5, 1:09 AM CDT	Severe Thunderstorm Warning	SGF	Barry, McDonald, Newton	36 min
Apr 5, 1:35 AM CDT	Severe Thunderstorm Warning	SGF	Greene, Lawrence	40 min
Apr 5, 2:33 AM CDT	Freeze Watch	SGF	Barry, Barton, Benton, Camden, Cedar, Christian and 28 more	25 hr
Apr 5, 2:33 AM CDT	Freeze Warning	SGF	Barry, Barton, Benton, Camden, Cedar, Christian and 26 more	30 hr
Apr 5, 2:54 AM CDT	Severe Thunderstorm Warning	SGF	Christian, Greene, Webster	36 min

Nearby

Freeze Warnings in Missouri, 2009 Freeze Warnings in Kansas, 2009 Every freeze 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.