Alert archive / Missouri / Severe Thunderstorm Watches in 2001
Severe Thunderstorm Watch 246
The Storm Prediction Center issued this severe thunderstorm watch at May 18, 2001, 3:00 PM CDT for 9 counties in Arkansas; Monroe County, Randolph County, Illinois; 28 counties in Missouri. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- May 18, 2001, 3:00 PM CDT (20:00 UTC)
- Expired
- May 18, 2001, 9:00 PM CDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
All 39 counties
Baxter County, AR, Clay County, AR, Fulton County, AR, Greene County, AR, Izard County, AR, Lawrence County, AR, Randolph County, AR, Sharp County, AR, Stone County, AR, Monroe County, IL, Randolph County, IL, Bollinger County, MO, Butler County, MO, Cape Girardeau County, MO, Carter County, MO, Crawford County, MO, Dent County, MO, Dunklin County, MO, Howell County, MO, Iron County, MO, Jefferson County, MO, Madison County, MO, Maries County, MO, New Madrid County, MO, Oregon County, MO, Pemiscot County, MO, Perry County, MO, Phelps County, MO, Pulaski County, MO, Reynolds County, MO, Ripley County, MO, Saint Francois County, MO, Sainte Genevieve County, MO, Scott County, MO, Shannon County, MO, Stoddard County, MO, Texas County, MO, Washington County, MO, Wayne County, MO
The radar
The St Louis radar (KLSX), 159 km from the middle of the area, began a volume at 20:02 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.
Warnings issued inside it
12 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 18, 3:00 PM CDT | Severe Thunderstorm Warning | LZK | Fulton, Izard | 45 min |
| May 18, 3:10 PM CDT | Severe Thunderstorm Warning | SGF | Douglas, Howell | 50 min |
| May 18, 3:57 PM CDT | Severe Thunderstorm Warning | LZK | Fulton, Sharp | 48 min |
| May 18, 4:12 PM CDT | Severe Thunderstorm Warning | SGF | Shannon | 33 min |
| May 18, 4:41 PM CDT | Severe Thunderstorm Warning | PAH | Carter | 39 min |
| May 18, 4:42 PM CDT | Severe Thunderstorm Warning | SGF | Shannon | 33 min |
| May 18, 4:48 PM CDT | Severe Thunderstorm Warning | LSX | Reynolds | 42 min |
| May 18, 5:11 PM CDT | Severe Thunderstorm Warning | PAH | Wayne | 49 min |
| May 18, 5:45 PM CDT | Severe Thunderstorm Warning | LSX | Iron, Madison | 45 min |
| May 18, 5:55 PM CDT | Severe Thunderstorm Warning | LSX | Franklin, Jefferson, Washington | 50 min |
| May 18, 6:11 PM CDT | Severe Thunderstorm Warning | PAH | Butler, Ripley | 49 min |
| May 18, 6:26 PM CDT | Severe Thunderstorm Warning | PAH | Bollinger | 34 min |
The nearest sounding before it
Springfield, MO (KSGF), launched 12:00Z, 8.0 hours before the alert went out and 230 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
- 90 J/kg
- Mixed-layer CIN
- -167 J/kg
- Mixed-layer LCL
- 805 m above ground
- 0-6 km bulk shear
- 15 kt
- 0-1 km storm-relative helicity
- -22 m²/s²
- 0-3 km storm-relative helicity
- -23 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 18, 6:15 PM CDT | Severe Thunderstorm Watch | SPC | Alexander, Franklin, Gallatin, Hamilton, Hardin, Jackson and 10 more | 5 hr |
Nearby
Severe Thunderstorm Watches in Missouri, 2001Severe Thunderstorm Watches in Arkansas, 2001Severe Thunderstorm Watches in Illinois, 2001Every severe thunderstorm watch in 2001
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.