Alert archive / Missouri / Severe Thunderstorm Watches in 2003
Severe Thunderstorm Watch 37
The Storm Prediction Center issued this severe thunderstorm watch at Mar 13, 2003, 12:00 AM CST for 11 counties in Illinois; 16 counties in Missouri. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- Mar 13, 2003, 12:00 AM CST (06:00 UTC)
- Expired
- Mar 13, 2003, 5:00 AM CST
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
All 27 counties
Bond County, IL, Calhoun County, IL, Clinton County, IL, Fayette County, IL, Jersey County, IL, Macoupin County, IL, Madison County, IL, Monroe County, IL, Montgomery County, IL, Randolph County, IL, Saint Clair County, IL, City of Saint Louis, MO, Crawford County, MO, Dent County, MO, Franklin County, MO, Iron County, MO, Jefferson County, MO, Lincoln County, MO, Madison County, MO, Phelps County, MO, Reynolds County, MO, Saint Charles County, MO, Saint Francois County, MO, Saint Louis County, MO, Sainte Genevieve County, MO, Warren County, MO, Washington County, MO
The radar
The St Louis radar (KLSX), 64 km from the middle of the area, began a volume at 06:03 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
3 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 13, 12:19 AM CST | Severe Thunderstorm Warning | LSX | Franklin | 26 min |
| Mar 13, 12:45 AM CST | Severe Thunderstorm Warning | LSX | Macoupin, Montgomery | 45 min |
| Mar 13, 12:56 AM CST | Severe Thunderstorm Warning | LSX | Franklin, Jefferson, Saint Louis | 49 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
Lincoln, IL (KILX), launched 00:00Z, 6.0 hours before the alert went out and 295 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1320 m above ground
- 0-6 km bulk shear
- 66 kt
- 0-1 km storm-relative helicity
- 192 m²/s²
- 0-3 km storm-relative helicity
- 313 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 |
|---|---|---|---|---|
| Mar 12, 9:28 PM CST | Mesoscale Discussion | SPC | Christian, Clark, Coles, Cumberland, Douglas, Greene and 9 more | 2 hr |
| Mar 12, 9:52 PM CST | Mesoscale Discussion | SPC | Monroe, Saint Clair | 113 min |
| Mar 13, 1:35 AM CST | Mesoscale Discussion | SPC | Alexander, Franklin, Hamilton, Jackson, Jefferson, Johnson and 7 more | 115 min |
| Mar 12, 7:48 PM CST | Mesoscale Discussion | SPC | Barry, Barton, Bates, Benton, Boone, Callaway and 35 more | 57 min |
| Mar 12, 8:25 PM CST | Severe Thunderstorm Watch | SPC | Audrain, Barry, Barton, Bates, Benton, Boone and 44 more | 6 hr |
| Mar 12, 11:41 PM CST | Mesoscale Discussion | SPC | Butler, Callaway, Camden, Carter, Christian, Cole and 28 more | 94 min |
Nearby
Severe Thunderstorm Watches in Missouri, 2003Severe Thunderstorm Watches in Illinois, 2003Every severe thunderstorm watch in 2003
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.