Alert archive / Missouri / Tornado Watches in 2008
Tornado Watch 421
The Storm Prediction Center issued this tornado watch at Jun 2, 2008, 2:14 PM CDT for 13 counties in Missouri. It was in force for 4 hr.
The area
The outline as issued.
The facts
- Issued
- Jun 2, 2008, 2:14 PM CDT (19:14 UTC)
- Expired
- Jun 2, 2008, 5:59 PM CDT
- In force
- 4 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 3 in
- Strongest gust expected
- 70 kt
Counties Christian County, MO, Dent County, MO, Douglas County, MO, Greene County, MO, Howell County, MO, Oregon County, MO, Ozark County, MO, Phelps County, MO, Pulaski County, MO, Shannon County, MO, Texas County, MO, Webster County, MO, Wright County, MO
The radar
The Springfield radar (KSGF), 89 km from the middle of the area, began a volume at 18:58 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
- 20%
- One or more EF2 to EF5 tornadoes
- 20%
- Ten or more severe wind reports
- 70%
- One or more gusts of 65 knots or more
- 60%
- Ten or more severe hail reports
- 70%
- One or more hailstones of 2 inches or more
- 90%
- Six or more combined severe hail and wind reports
- 95%
Warnings issued inside it
8 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 2, 3:07 PM CDT | Severe Thunderstorm Warning | SGF | Dallas, Laclede, Webster | 68 min |
| Jun 2, 3:11 PM CDT | Severe Thunderstorm Warning | SGF | Greene, Polk | 38 min |
| Jun 2, 3:18 PM CDT | Severe Thunderstorm Warning | SGF | Wright | 72 min |
| Jun 2, 4:04 PM CDT | Severe Thunderstorm Warning | SGF | Douglas, Texas | 56 min |
| Jun 2, 4:21 PM CDT | Severe Thunderstorm Warning | SGF | Dent, Shannon, Texas | 54 min |
| Jun 2, 4:26 PM CDT | Severe Thunderstorm Warning | SGF | Howell, Oregon, Shannon | 64 min |
| Jun 2, 5:13 PM CDT | Severe Thunderstorm Warning | SGF | Shannon | 32 min |
| Jun 2, 5:28 PM CDT | Severe Thunderstorm Warning | SGF | Oregon, Shannon | 22 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, 7.2 hours before the alert went out and 133 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.
- Mixed-layer CAPE
- 1175 J/kg
- Mixed-layer CIN
- -67 J/kg
- Mixed-layer LCL
- 792 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- 42 m²/s²
- 0-3 km storm-relative helicity
- 89 m²/s²
- Significant tornado parameter
- 0.4
- Supercell composite
- 3.4
The text
As transmitted, in the capitals the NWS used until 2016.
000
WWUS20 KWNS 021911
SEL1
SPC WW 021911
MOZ000-022300-
URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 421
NWS STORM PREDICTION CENTER NORMAN OK
210 PM CDT MON JUN 2 2008
THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF
SOUTHWEST MISSOURI
EFFECTIVE THIS MONDAY AFTERNOON AND EVENING FROM 210 PM UNTIL 600
PM CDT.
TORNADOES...HAIL TO 3 INCHES IN DIAMETER...THUNDERSTORM WIND
GUSTS TO 80 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE
AREAS.
THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 50 STATUTE
MILES EITHER SIDE OF A LINE FROM 55 MILES WEST OF FORT LEONARD
WOOD MISSOURI TO 45 MILES EAST NORTHEAST OF WEST PLAINS MISSOURI.
FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH
OUTLINE UPDATE (WOUS64 KWNS WOU1).
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 420...
DISCUSSION...COMPACT...INTENSE CLUSTER OF THUNDERSTORMS IS
MAINTAINING BOWING/HP-STRUCTURES AS THEY MOVE SEWD ACROSS SWRN MO
THIS AFTERNOON. AIRMASS HAS DESTABILIZED AHEAD OF THIS ACTIVITY AND
SHEAR IS QUITE STRONG...SUGGESTING CONTINUED THREAT OF SIGNIFICANT
HAIL DRIVEN BY INTENSE OUTFLOW WINDS BOTH OF WHICH COULD BE QUITE
DESTRUCTIVE. ISOLATED TORNADO POTENTIAL WILL ALSO REMAIN...MAINLY
ON SWRN PORTION OF THIS CLUSTER.
AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 3 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 70 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
550. MEAN STORM MOTION VECTOR 31025.
...EVANSSPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 2, 7:22 AM CDT | Mesoscale Discussion | SPC | Andrew, Buchanan, Clinton, Holt, Platte | 53 min |
| Jun 2, 7:49 AM CDT | Severe Thunderstorm Watch | SPC | Andrew, Bates, Buchanan, Cass, Clay, Clinton and 5 more | 6 hr |
| Jun 2, 10:57 AM CDT | Tornado Watch | SPC | Barton, Benton, Camden, Cedar, Dade, Dallas and 6 more | 7 hr |
| Jun 2, 1:04 PM CDT | Mesoscale Discussion | SPC | Bates, St. Clair, Vernon | 56 min |
| Jun 2, 2:40 PM CDT | Mesoscale Discussion | SPC | Butler, Carter, Dunklin, Mississippi, New Madrid, Pemiscot and 4 more | 65 min |
| Jun 2, 4:01 PM CDT | Severe Thunderstorm Watch | SPC | Butler, Carter, Dunklin, New Madrid, Pemiscot, Ripley and 2 more | 3 hr |
| Jun 2, 5:02 PM CDT | Mesoscale Discussion | SPC | Butler, Carter, Dent, Douglas, Dunklin, Howell and 11 more | 88 min |
| Jun 2, 6:47 PM CDT | Mesoscale Discussion | SPC | Butler, Carter, Dunklin, New Madrid, Pemiscot, Ripley | 58 min |
Nearby
Tornado Watches in Missouri, 2008Every tornado watch in 2008
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.