Alert archive / Missouri / Tornado Watches in 2007

Tornado Watch 714

October 17, 200759 counties in Missouri

The Storm Prediction Center issued this tornado watch at Oct 17, 2007, 5:30 PM CDT for 59 counties in Missouri. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued
Oct 17, 2007, 5:30 PM CDT (22:30 UTC)
Expired
Oct 17, 2007, 11:40 PM CDT
In force
6 hr
Issued by
the Storm Prediction Center
Largest hail expected
2 in
Strongest gust expected
60 kt
All 59 counties

Audrain County, MO, Barry County, MO, Barton County, MO, Bates County, MO, Benton County, MO, Boone County, MO, Callaway County, MO, Camden County, MO, Cedar County, MO, Chariton County, MO, Christian County, MO, Cole County, MO, Cooper County, MO, Crawford County, MO, Dade County, MO, Dallas County, MO, Dent County, MO, Douglas County, MO, Gasconade County, MO, Greene County, MO, Henry County, MO, Hickory County, MO, Howard County, MO, Howell County, MO, Jasper County, MO, Johnson County, MO, Knox County, MO, Laclede County, MO, Lawrence County, MO, Lewis County, MO, Macon County, MO, Maries County, MO, Marion County, MO, McDonald County, MO, Miller County, MO, Moniteau County, MO, Monroe County, MO, Montgomery County, MO, Morgan County, MO, Newton County, MO, Oregon County, MO, Osage County, MO, Ozark County, MO, Pettis County, MO, Phelps County, MO, Polk County, MO, Pulaski County, MO, Ralls County, MO, Randolph County, MO, Saline County, MO, Shannon County, MO, Shelby 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), 72 km from the middle of the area, began a volume at 22:30 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
50%
One or more EF2 to EF5 tornadoes
40%
Ten or more severe wind reports
50%
One or more gusts of 65 knots or more
40%
Ten or more severe hail reports
40%
One or more hailstones of 2 inches or more
30%
Six or more combined severe hail and wind reports
90%

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
Oct 17, 5:30 PM CDTFlash Flood WarningEAXHenry, Johnson, Lafayette, Pettis, Saline6 hr
Oct 17, 5:34 PM CDTTornado WarningSGFLawrence41 min
Oct 17, 5:52 PM CDTSevere Thunderstorm WarningSGFBarton53 min
Oct 17, 6:02 PM CDTSevere Thunderstorm WarningSGFCedar, St. Clair, Vernon58 min
Oct 17, 6:03 PM CDTTornado WarningSGFChristian, Greene57 min
Oct 17, 6:08 PM CDTTornado WarningSGFBarton, Cedar, Vernon43 min
Oct 17, 6:19 PM CDTSevere Thunderstorm WarningEAXPettis, Saline41 min
Oct 17, 6:34 PM CDTSevere Thunderstorm WarningEAXAdair, Macon41 min
Oct 17, 6:38 PM CDTTornado WarningSGFPolk34 min
Oct 17, 6:39 PM CDTTornado WarningSGFSt. Clair, Vernon21 min
Oct 17, 6:44 PM CDTSevere Thunderstorm WarningLSXKnox31 min
Oct 17, 6:50 PM CDTSevere Thunderstorm WarningLSXKnox, Lewis, Shelby55 min
Oct 17, 7:02 PM CDTFlash Flood WarningEAXAdair, Chariton, Howard, Linn, Macon, Randolph and 1 more6 hr
Oct 17, 8:49 PM CDTSevere Thunderstorm WarningSGFJasper, McDonald, Newton56 min
Oct 17, 9:34 PM CDTSevere Thunderstorm WarningSGFBarton, Cedar, Dade, Jasper, St. Clair, Vernon56 min
Oct 17, 9:38 PM CDTSevere Thunderstorm WarningSGFBarry, Jasper, Lawrence, McDonald, Newton67 min
Oct 17, 9:49 PM CDTSevere Thunderstorm WarningSGFOregon42 min
Oct 17, 9:57 PM CDTSevere Thunderstorm WarningSGFBenton, Hickory, Polk, St. Clair63 min
Oct 17, 10:05 PM CDTSevere Thunderstorm WarningSGFGreene70 min
Oct 17, 10:12 PM CDTSevere Thunderstorm WarningSGFChristian33 min
Oct 17, 10:21 PM CDTSevere Thunderstorm WarningSGFOzark54 min
Oct 17, 10:40 PM CDTSevere Thunderstorm WarningSGFChristian, Stone, Taney70 min
Oct 17, 10:42 PM CDTSevere Thunderstorm WarningEAXCooper, Howard, Pettis33 min
Oct 17, 10:50 PM CDTSevere Thunderstorm WarningSGFDallas, Webster55 min
Oct 17, 10:52 PM CDTSevere Thunderstorm WarningSGFDouglas, Howell53 min
Oct 17, 11:19 PM CDTSevere Thunderstorm WarningSGFLaclede, Wright43 min
Oct 17, 11:22 PM CDTSevere Thunderstorm WarningSGFShannon, Texas53 min
Oct 17, 11:24 PM CDTSevere Thunderstorm WarningLSXAudrain, Boone, Callaway, Cole, Moniteau, Monroe51 min
Oct 17, 11:40 PM CDTSevere Thunderstorm WarningSGFPulaski, Texas55 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

Springfield, MO (KSGF), launched 12:00Z, 10.5 hours before the alert went out and 117 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 12:00Z on 2007-10-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 389 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 12:00Z on 2007-10-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 195 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
389 J/kg
Mixed-layer CIN
-89 J/kg
Mixed-layer LCL
632 m above ground
0-6 km bulk shear
54 kt
0-1 km storm-relative helicity
195 m²/s²
0-3 km storm-relative helicity
218 m²/s²
Significant tornado parameter
0.0
Supercell composite
3.1

Open this sounding in Storm Lab

The text

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

000
WWUS20 KWNS 172229
SEL4  
SPC WW 172229
KSZ000-MOZ000-180600-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 714
NWS STORM PREDICTION CENTER NORMAN OK
530 PM CDT WED OCT 17 2007

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

       SOUTHEAST KANSAS
       MUCH OF MISSOURI

EFFECTIVE THIS WEDNESDAY AFTERNOON AND THURSDAY MORNING FROM 530
PM UNTIL 100 AM CDT.

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 85 STATUTE
MILES EAST AND WEST OF A LINE FROM 30 MILES SOUTHEAST OF MONETT
MISSOURI TO 70 MILES NORTH OF COLUMBIA MISSOURI.  FOR A COMPLETE
DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE
(WOUS64 KWNS WOU4).

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...THIS TORNADO WATCH REPLACES TORNADO
WATCH NUMBER 709. WATCH NUMBER 709 WILL NOT BE IN EFFECT AFTER
530 PM CDT. CONTINUE...WW 710...WW 711...WW 712...WW 713...

DISCUSSION...BROKEN LINE OF STRONG/SEVERE THUNDERSTORMS EXTENDS FROM
SOUTHWEST INTO NORTH CENTRAL MO...WHILE NEW STORMS ARE BEGINNING TO
FORM AHEAD OF LINE.  ACTIVITY WILL LIKELY AFFECT MUCH OF MO THROUGH
THE EVENING  AS VIGOROUS UPPER TROUGH SWEEPS ACROSS REGION. 
SUPERCELLS CAPABLE OF TORNADOES...DAMAGING WINDS...AND HAIL ARE
POSSIBLE.

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
500. MEAN STORM MOTION VECTOR 24035.


...HART

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Oct 17, 4:29 PM CDTMesoscale DiscussionSPCAdams, Calhoun, Jersey, Monroe, Pike31 min
Oct 17, 4:07 AM CDTMesoscale DiscussionSPCBarton, Bates, Cass, Cedar, Dade, Greene and 8 more113 min
Oct 17, 10:24 AM CDTMesoscale DiscussionSPCBarry, Barton, Bates, Benton, Cass, Cedar and 14 more96 min
Oct 17, 10:43 AM CDTTornado WatchSPCBarry, Barton, Bates, Benton, Cedar, Christian and 16 more7 hr
Oct 17, 6:23 PM CDTMesoscale DiscussionSPCPlatte37 min
Oct 16, 10:36 PM CDTMesoscale DiscussionSPCBeckham, Greer, Harmon, Jackson, Roger Mills114 min
Oct 17, 1:12 AM CDTMesoscale DiscussionSPCBeaver, Beckham, Dewey, Ellis, Harmon, Harper and 4 more93 min
Oct 17, 1:36 AM CDTTornado WatchSPCBeckham, Custer, Dewey, Ellis, Greer, Harmon and 7 more7 hr
Oct 17, 1:44 AM CDTSevere Thunderstorm WatchSPCBeaver, Texas7 hr
Oct 17, 6:07 AM CDTMesoscale DiscussionSPCBeckham, Custer, Dewey, Ellis, Greer, Harmon and 7 more113 min
Oct 17, 6:50 AM CDTMesoscale DiscussionSPCBeaver, Texas100 min
Oct 17, 7:43 AM CDTTornado WatchSPCBlaine, Caddo, Canadian, Carter, Cleveland, Comanche and 33 more7 hr
Oct 17, 1:20 PM CDTMesoscale DiscussionSPCAtoka, Bryan, Cherokee, Choctaw, Coal, Creek and 25 more85 min
Oct 17, 2:25 PM CDTTornado WatchSPCAlfalfa, Atoka, Blaine, Bryan, Caddo, Canadian and 44 more8 hr
Oct 17, 4:31 PM CDTTornado WatchSPCAdair, Cherokee, Craig, Delaware, Haskell, LeFlore and 9 more7 hr

Nearby

Tornado Watches in Missouri, 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.