Alert archive / Missouri / Mesoscale Discussions in 2017

Mesoscale Discussion 227

February 28, 201712 counties in Kansas; 20 counties in Missouri; 10 counties in Oklahoma

The Storm Prediction Center issued this mesoscale discussion at Feb 28, 2017, 10:01 PM CST for 12 counties in Kansas; 20 counties in Missouri; 10 counties in Oklahoma. It was in force for 119 min.

The area

The outline as issued.

The facts

Issued
Feb 28, 2017, 10:01 PM CST (04:01 UTC)
Expired
Mar 1, 2017, 12:00 AM CST
In force
119 min
Issued by
the Storm Prediction Center
All 42 counties

Allen County, KS, Bourbon County, KS, Chautauqua County, KS, Cherokee County, KS, Cowley County, KS, Crawford County, KS, Elk County, KS, Labette County, KS, Linn County, KS, Montgomery County, KS, Neosho County, KS, Wilson County, KS, Barry County, MO, Barton County, MO, Bates County, MO, Benton County, MO, Camden County, MO, Cedar County, MO, Christian County, MO, Dade County, MO, Dallas County, MO, Greene County, MO, Hickory County, MO, Jasper County, MO, Lawrence County, MO, McDonald County, MO, Newton County, MO, Polk County, MO, St. Clair County, MO, Stone County, MO, Vernon County, MO, Webster County, MO, Craig County, OK, Delaware County, OK, Mayes County, OK, Nowata County, OK, Osage County, OK, Ottawa County, OK, Pawnee County, OK, Rogers County, OK, Tulsa County, OK, Washington County, OK

The radar

The Tulsa radar (KINX), 111 km from the middle of the area, began a volume at 04:04 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, 4.0 hours before the alert went out and 114 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-pSkew-T log-p diagram, Springfield, MO at 00:00Z on 2017-03-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1117 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Springfield, MO at 00:00Z on 2017-03-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 341 square meters per square second.1939587897117136Sfc1 km3 km6 km9 kmRMLM
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
1117 J/kg
Mixed-layer CIN
-52 J/kg
Mixed-layer LCL
931 m above ground
0-6 km bulk shear
65 kt
0-1 km storm-relative helicity
341 m²/s²
0-3 km storm-relative helicity
315 m²/s²
Significant tornado parameter
2.3
Supercell composite
8.2

Open this sounding in Storm Lab

The text

As transmitted.

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SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Feb 28, 6:05 PM CSTMesoscale DiscussionSPCAllen, Anderson, Bourbon, Chautauqua, Cherokee, Crawford and 8 more115 min
Feb 28, 6:23 PM CSTTornado WatchSPCLinn, Miami5 hr
Feb 28, 9:04 PM CSTTornado WatchSPCAllen, Bourbon, Chautauqua, Cherokee, Crawford, Elk and 4 more7 hr
Feb 28, 7:46 PM CSTMesoscale DiscussionSPCBollinger, Butler, Cape Girardeau, Carter, Dunklin, Madison and 10 more119 min
Feb 28, 8:06 PM CSTMesoscale DiscussionSPCClark, Lewis84 min
Feb 28, 8:29 PM CSTTornado WatchSPCBollinger, Butler, Cape Girardeau, Carter, Dunklin, Mississippi and 7 more12 hr
Feb 28, 10:09 PM CSTMesoscale DiscussionSPCBollinger, Cape Girardeau, Perry66 min
Mar 1, 12:16 AM CSTMesoscale DiscussionSPCBarton, Camden, Cedar, Christian, Cole, Crawford and 28 more89 min
Mar 1, 2:09 AM CSTMesoscale DiscussionSPCBollinger, Butler, Cape Girardeau, Carter, Dunklin, Madison and 9 more2 hr
Mar 1, 3:03 AM CSTTornado WatchSPCBollinger, Butler, Cape Girardeau, Carter, Dunklin, Mississippi and 7 more5 hr
Mar 1, 4:19 AM CSTMesoscale DiscussionSPCMississippi56 min
Feb 28, 10:46 PM CSTMesoscale DiscussionSPCAdair, Atoka, Bryan, Choctaw, Coal, Haskell and 11 more119 min
Feb 28, 11:35 PM CSTTornado WatchSPCAtoka, Bryan, Carter, Choctaw, Coal, Haskell and 13 more5 hr

Nearby

Mesoscale Discussions in Missouri, 2017Mesoscale Discussions in Kansas, 2017Mesoscale Discussions in Oklahoma, 2017Every mesoscale discussion in 2017

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.