Alert archive / Illinois / Tornado Watches in 2006
Tornado Watch 267
The Storm Prediction Center issued this tornado watch at Apr 30, 2006, 3:05 PM CDT for 5 states. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Apr 30, 2006, 3:05 PM CDT (20:05 UTC)
- Expired
- Apr 30, 2006, 9:00 PM CDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 2.5 in
- Strongest gust expected
- 60 kt
All 50 counties
Clay County, AR, Craighead County, AR, Greene County, AR, Lawrence County, AR, Mississippi County, AR, Poinsett County, AR, Randolph County, AR, Alexander County, IL, Clinton County, IL, Franklin County, IL, Hamilton County, IL, Jackson County, IL, Jefferson County, IL, Johnson County, IL, Marion County, IL, Massac County, IL, Perry County, IL, Pope County, IL, Pulaski County, IL, Randolph County, IL, Saline County, IL, Union County, IL, Washington County, IL, Wayne County, IL, Williamson County, IL, Ballard County, KY, Carlisle County, KY, Fulton County, KY, Hickman County, KY, McCracken County, KY, Bollinger County, MO, Butler County, MO, Cape Girardeau County, MO, Carter County, MO, Dunklin County, MO, Madison County, MO, Mississippi County, MO, New Madrid County, MO, Pemiscot County, MO, Perry County, MO, Ripley County, MO, Sainte Genevieve County, MO, Scott County, MO, Stoddard County, MO, Wayne County, MO, Dyer County, TN, Lake County, TN, Lauderdale County, TN, Obion County, TN, Tipton County, TN
The radar
The Paducah radar (KPAH), 92 km from the middle of the area, began a volume at 20:09 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
- 40%
- One or more EF2 to EF5 tornadoes
- 20%
- Ten or more severe wind reports
- 30%
- One or more gusts of 65 knots or more
- 30%
- 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
- 70%
Warnings issued inside it
31 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 30, 3:08 PM CDT | Severe Thunderstorm Warning | PAH | Ripley | 82 min |
| Apr 30, 3:14 PM CDT | Severe Thunderstorm Warning | PAH | Butler, Carter, Wayne | 76 min |
| Apr 30, 3:29 PM CDT | Severe Thunderstorm Warning | PAH | Perry | 61 min |
| Apr 30, 3:34 PM CDT | Severe Thunderstorm Warning | LSX | Clinton, Saint Clair | 56 min |
| Apr 30, 3:40 PM CDT | Severe Thunderstorm Warning | LSX | Washington | 65 min |
| Apr 30, 3:41 PM CDT | Severe Thunderstorm Warning | PAH | Bollinger | 49 min |
| Apr 30, 3:58 PM CDT | Severe Thunderstorm Warning | PAH | Cape Girardeau | 62 min |
| Apr 30, 4:01 PM CDT | Severe Thunderstorm Warning | LSX | Sainte Genevieve | 29 min |
| Apr 30, 4:05 PM CDT | Severe Thunderstorm Warning | PAH | Jackson | 55 min |
| Apr 30, 4:18 PM CDT | Severe Thunderstorm Warning | PAH | Stoddard | 42 min |
| Apr 30, 4:28 PM CDT | Severe Thunderstorm Warning | PAH | Butler, Ripley | 62 min |
| Apr 30, 4:29 PM CDT | Severe Thunderstorm Warning | LSX | Clinton, Marion | 61 min |
| Apr 30, 4:31 PM CDT | Severe Thunderstorm Warning | PAH | Bollinger | 14 min |
| Apr 30, 4:44 PM CDT | Severe Thunderstorm Warning | PAH | Scott | 61 min |
| Apr 30, 4:57 PM CDT | Severe Thunderstorm Warning | PAH | Cape Girardeau | 48 min |
| Apr 30, 4:59 PM CDT | Severe Thunderstorm Warning | PAH | Stoddard | 46 min |
| Apr 30, 5:07 PM CDT | Tornado Warning | PAH | Scott | 38 min |
| Apr 30, 5:21 PM CDT | Severe Thunderstorm Warning | PAH | Jackson, Union | 54 min |
| Apr 30, 5:23 PM CDT | Tornado Warning | PAH | Alexander | 37 min |
| Apr 30, 5:28 PM CDT | Severe Thunderstorm Warning | PAH | Butler | 47 min |
| Apr 30, 5:46 PM CDT | Severe Thunderstorm Warning | PAH | New Madrid, Scott, Stoddard | 44 min |
| Apr 30, 5:55 PM CDT | Severe Thunderstorm Warning | PAH | Pulaski | 50 min |
| Apr 30, 6:03 PM CDT | Severe Thunderstorm Warning | PAH | Johnson, Williamson | 45 min |
| Apr 30, 6:08 PM CDT | Severe Thunderstorm Warning | MEG | Dunklin | 52 min |
| Apr 30, 6:29 PM CDT | Severe Thunderstorm Warning | PAH | New Madrid, Stoddard | 61 min |
| Apr 30, 6:35 PM CDT | Tornado Warning | MEG | Dunklin | 25 min |
| Apr 30, 6:46 PM CDT | Tornado Warning | PAH | New Madrid | 59 min |
| Apr 30, 7:12 PM CDT | Severe Thunderstorm Warning | MEG | Dunklin | 33 min |
| Apr 30, 7:20 PM CDT | Tornado Warning | MEG | Dunklin | 25 min |
| Apr 30, 7:44 PM CDT | Tornado Warning | PAH | Fulton | 40 min |
| Apr 30, 8:18 PM CDT | Severe Thunderstorm Warning | MEG | Obion | 42 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
Little Rock, AR (KLZK), launched 12:00Z, 8.1 hours before the alert went out and 284 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
- 20 J/kg
- Mixed-layer CIN
- -135 J/kg
- Mixed-layer LCL
- 1054 m above ground
- 0-6 km bulk shear
- 72 kt
- 0-1 km storm-relative helicity
- -36 m²/s²
- 0-3 km storm-relative helicity
- 86 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 |
|---|---|---|---|---|
| Apr 30, 10:30 AM CDT | Mesoscale Discussion | SPC | Baxter, Fulton, Marion | 90 min |
| Apr 30, 11:20 AM CDT | Mesoscale Discussion | SPC | Crittenden, Mississippi | 85 min |
| Apr 30, 11:52 AM CDT | Severe Thunderstorm Watch | SPC | Baxter, Boone, Clay, Cleburne, Craighead, Fulton and 16 more | 7 hr |
| Apr 30, 1:04 PM CDT | Mesoscale Discussion | SPC | Randolph | 86 min |
| Apr 30, 2:30 PM CDT | Mesoscale Discussion | SPC | Clay, Greene, Mississippi | 2 hr |
| Apr 30, 5:25 PM CDT | Mesoscale Discussion | SPC | Clay, Craighead, Greene, Lawrence, Mississippi, Poinsett and 1 more | 95 min |
Nearby
Tornado Watches in Illinois, 2006Tornado Watches in Missouri, 2006Tornado Watches in Arkansas, 2006Every tornado 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.