Alert archive / Missouri / Tornado Watches in 2007

Tornado Watch 38

February 28, 2007Bourbon County, Linn County, Miami County, Kansas; 12 counties in Missouri

The Storm Prediction Center issued this tornado watch at Feb 28, 2007, 7:10 PM CST for Bourbon County, Linn County, Miami County, Kansas; 12 counties in Missouri. It was in force for 7 hr.

The area

The outline as issued.

The facts

Issued
Feb 28, 2007, 7:10 PM CST (01:10 UTC)
Expired
Mar 1, 2007, 1:47 AM CST
In force
7 hr
Issued by
the Storm Prediction Center
Largest hail expected
2 in
Strongest gust expected
60 kt

Counties Bourbon County, KS, Linn County, KS, Miami County, KS, Bates County, MO, Benton County, MO, Cass County, MO, Cedar County, MO, Cooper County, MO, Henry County, MO, Hickory County, MO, Johnson County, MO, Morgan County, MO, Pettis County, MO, St. Clair County, MO, Vernon County, MO

The radar

The Pleasant Hill radar (KEAX), 48 km from the middle of the area, began a volume at 01:13 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.

What SPC expected

The probabilities SPC published with the watch, for the watch area over its life.

Two or more tornadoes
60%
One or more EF2 to EF5 tornadoes
30%
Ten or more severe wind reports
30%
One or more gusts of 65 knots or more
30%
Ten or more severe hail reports
50%
One or more hailstones of 2 inches or more
40%
Six or more combined severe hail and wind reports
80%

Warnings issued inside it

19 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

IssuedProductOfficeCountiesLasted
Feb 28, 7:11 PM CSTTornado WarningEAXLinn64 min
Feb 28, 7:26 PM CSTSevere Thunderstorm WarningEAXLinn49 min
Feb 28, 7:52 PM CSTSevere Thunderstorm WarningEAXJohnson, Miami38 min
Feb 28, 7:57 PM CSTFlash Flood WarningEAXJohnson, Leavenworth, Miami, Wyandotte8 hr
Feb 28, 8:04 PM CSTTornado WarningEAXLinn56 min
Feb 28, 8:15 PM CSTSevere Thunderstorm WarningEAXBates, Cass45 min
Feb 28, 8:29 PM CSTTornado WarningEAXMiami61 min
Feb 28, 8:44 PM CSTTornado WarningEAXBates, Cass, Henry, Johnson61 min
Feb 28, 9:18 PM CSTTornado WarningEAXCass57 min
Feb 28, 9:25 PM CSTTornado WarningEAXHenry, Johnson, Pettis65 min
Feb 28, 9:30 PM CSTFlash Flood WarningEAXMiami10 hr
Feb 28, 9:30 PM CSTFlash Flood WarningEAXJohnson, Linn, Miami10 hr
Feb 28, 9:41 PM CSTSevere Thunderstorm WarningEAXCass, Jackson, Johnson34 min
Feb 28, 10:06 PM CSTTornado WarningEAXJohnson39 min
Feb 28, 10:18 PM CSTTornado WarningEAXCooper, Pettis29 min
Feb 28, 10:20 PM CSTSevere Thunderstorm WarningEAXJohnson, Lafayette40 min
Feb 28, 10:41 PM CSTTornado WarningEAXJohnson, Pettis49 min
Feb 28, 11:11 PM CSTSevere Thunderstorm WarningEAXJohnson, Miami34 min
Feb 28, 11:13 PM CSTTornado WarningEAXCooper, Howard, Pettis, Saline47 min

Discussions around it

SPC mesoscale discussions over the same counties from four hours before the watch to its end.

The nearest sounding before it

Topeka, KS (KTOP), launched 00:00Z, 1.2 hours before the alert went out and 139 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, Topeka, KS at 00:00Z on 2007-03-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, Topeka, KS at 00:00Z on 2007-03-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 58 square meters per square second.1939587897Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
2552 m above ground
0-6 km bulk shear
57 kt
0-1 km storm-relative helicity
58 m²/s²
0-3 km storm-relative helicity
110 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000
WWUS20 KWNS 010109
SEL8  
SPC WW 010109
KSZ000-MOZ000-010900-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 38
NWS STORM PREDICTION CENTER NORMAN OK
710 PM CST WED FEB 28 2007

THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF 

       EXTREME EAST CENTRAL KANSAS
       WEST CENTRAL MISSOURI

EFFECTIVE THIS WEDNESDAY NIGHT AND THURSDAY MORNING FROM 710 PM
UNTIL 300 AM CST.

TORNADOES...HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND
GUSTS TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE
AREAS.

THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 60 STATUTE
MILES EAST AND WEST OF A LINE FROM 25 MILES WEST NORTHWEST OF
KNOB NOSTER MISSOURI TO 80 MILES SOUTH SOUTHWEST OF KNOB NOSTER
MISSOURI.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU8).

REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR
TORNADOES AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH
AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR
THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS
AND POSSIBLE WARNINGS.

OTHER WATCH INFORMATION...CONTINUE...WW 36...WW 37...

DISCUSSION...ISOLATED TORNADIC SUPERCELL WILL LIKELY PERSIST FOR
SEVERAL MORE HOURS WHILE MOVING ENEWD INTO W CENTRAL MO ALONG THE
NRN FRINGE OF THE MOIST SECTOR.  BOUNDARY LAYER DEWPOINTS SHOULD
CONTINUE TO SLOWLY INCREASE INTO THE MID 50S THIS AREA AS LOW-LEVEL
SHEAR ALSO INTENSIFIES...THUS MAINTAINING A FAVORABLE
SUPERCELL/TORNADO ENVIRONMENT WELL INTO THE OVERNIGHT HOURS.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 2 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
450. MEAN STORM MOTION VECTOR 26035.


...THOMPSON

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Feb 28, 6:11 PM CSTMesoscale DiscussionSPCWyandotte94 min
Feb 28, 6:37 PM CSTSevere Thunderstorm WatchSPCAtchison, Brown, Doniphan, Douglas, Jackson, Jefferson and 5 more7 hr
Feb 28, 6:50 PM CSTMesoscale DiscussionSPCBourbon, Cherokee, Crawford, Linn, Miami85 min
Feb 28, 7:46 PM CSTMesoscale DiscussionSPCButler, Cowley89 min
Feb 28, 9:48 PM CSTMesoscale DiscussionSPCAllen, Anderson, Bourbon, Crawford, Douglas, Franklin and 3 more87 min
Feb 28, 10:57 PM CSTMesoscale DiscussionSPCChautauqua, Cowley, Elk93 min
Mar 1, 1:32 AM CSTTornado WatchSPCBourbon, Cherokee, Crawford, Labette, Linn, Neosho6 hr
Feb 28, 10:30 PM CSTMesoscale DiscussionSPCAudrain, Clark, Knox, Lewis, Marion, Monroe and 3 more90 min
Feb 28, 11:48 PM CSTMesoscale DiscussionSPCAudrain, Lewis, Lincoln, Marion, Monroe, Montgomery and 3 more57 min
Mar 1, 12:12 AM CSTMesoscale DiscussionSPCBollinger, Butler, Cape Girardeau, Carter, Dunklin, Howell and 15 more2 hr
Mar 1, 12:16 AM CSTSevere Thunderstorm WatchSPCAudrain, Boone, Callaway, Knox, Lewis, Lincoln and 7 more6 hr
Mar 1, 2:28 AM CSTMesoscale DiscussionSPCAudrain, Boone, Callaway, Cole, Knox, Lewis and 8 more92 min
Mar 1, 3:35 AM CSTMesoscale DiscussionSPCBollinger, Butler, Cape Girardeau, Carter, Crawford, Dent and 27 more55 min
Mar 1, 3:58 AM CSTTornado WatchSPCBollinger, Butler, Cape Girardeau, Carter, Cole, Crawford and 35 more8 hr

Nearby

Tornado Watches in Missouri, 2007Tornado Watches in Kansas, 2007Every tornado watch in 2007

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.