Alert archive / Missouri / Severe Thunderstorm Watches in 2006
Severe Thunderstorm Watch 615
The Storm Prediction Center issued this severe thunderstorm watch at Jul 18, 2006, 7:58 PM CDT for 12 counties in Missouri. It was in force for 2 hr.
The area
The outline as issued.
The facts
- Issued
- Jul 18, 2006, 7:58 PM CDT (00:58 UTC)
- Expired
- Jul 18, 2006, 10:21 PM CDT
- In force
- 2 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 2 in
- Strongest gust expected
- 60 kt
Counties Dent County, MO, Douglas County, MO, Howell County, MO, Laclede 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), 114 km from the middle of the area, began a volume at 01:00 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
- 5%
- Ten or more severe wind reports
- 30%
- One or more gusts of 65 knots or more
- 30%
- Ten or more severe hail reports
- 30%
- One or more hailstones of 2 inches or more
- 20%
- Six or more combined severe hail and wind reports
- 70%
Warnings issued inside it
6 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 18, 8:07 PM CDT | Severe Thunderstorm Warning | SGF | Shannon | 68 min |
| Jul 18, 8:11 PM CDT | Severe Thunderstorm Warning | SGF | Dent | 35 min |
| Jul 18, 8:24 PM CDT | Tornado Warning | SGF | Shannon | 66 min |
| Jul 18, 9:05 PM CDT | Flash Flood Warning | SGF | Shannon | 6 hr |
| Jul 18, 9:16 PM CDT | Severe Thunderstorm Warning | SGF | Texas | 53 min |
| Jul 18, 9:29 PM CDT | Severe Thunderstorm Warning | SGF | Shannon | 19 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 00:00Z, 1.0 hours before the alert went out and 158 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
- 2842 J/kg
- Mixed-layer CIN
- -34 J/kg
- Mixed-layer LCL
- 1972 m above ground
- 0-6 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- -13 m²/s²
- 0-3 km storm-relative helicity
- 34 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 18, 7:42 PM CDT | Mesoscale Discussion | SPC | Carter, Dent, Douglas, Howell, Laclede, Oregon and 6 more | 93 min |
| Jul 19, 2:24 PM CDT | Mesoscale Discussion | SPC | Carter, Cole, Crawford, Dent, Franklin, Gasconade and 12 more | 66 min |
| Jul 19, 5:23 PM CDT | Mesoscale Discussion | SPC | Jefferson, Lincoln, Perry, Saint Charles, Sainte Genevieve, Saint Louis and 1 more | 97 min |
| Jul 19, 5:45 PM CDT | Severe Thunderstorm Watch | SPC | Crawford, Franklin, Iron, Jefferson, Lincoln, Madison and 10 more | 5 hr |
Nearby
Severe Thunderstorm Watches in Missouri, 2006Every severe thunderstorm watch in 2006
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.