Alert archive / Missouri / Severe Thunderstorm Watches in 1998
Severe Thunderstorm Watch 384
The Storm Prediction Center issued this severe thunderstorm watch at May 21, 1998, 7:45 AM CDT for 27 counties in Missouri. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- May 21, 1998, 7:45 AM CDT (12:45 UTC)
- Expired
- May 21, 1998, 1:00 PM CDT
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
All 27 counties
Audrain County, MO, Boone County, MO, Caldwell County, MO, Callaway County, MO, Carroll County, MO, Chariton County, MO, Clinton County, MO, Cole County, MO, Cooper County, MO, Daviess County, MO, DeKalb County, MO, Gentry County, MO, Grundy County, MO, Harrison County, MO, Howard County, MO, Linn County, MO, Livingston County, MO, Macon County, MO, Mercer County, MO, Moniteau County, MO, Monroe County, MO, Ralls County, MO, Randolph County, MO, Ray County, MO, Saline County, MO, Shelby County, MO, Sullivan County, MO
The radar
The Pleasant Hill radar (KEAX), 142 km from the middle of the area, began a volume at 12:44 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
4 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 21, 10:16 AM CDT | Severe Thunderstorm Warning | LSX | Shelby | 49 min |
| May 21, 10:58 AM CDT | Severe Thunderstorm Warning | LSX | Audrain, Monroe | 47 min |
| May 21, 11:41 AM CDT | Severe Thunderstorm Warning | LSX | Callaway, Montgomery | 44 min |
| May 21, 12:05 PM CDT | Severe Thunderstorm Warning | LSX | Callaway | 35 min |
The nearest sounding before it
Davenport, (KDVN), launched 12:00Z, 0.8 hours before the alert went out and 306 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
- 2088 m above ground
- 0-6 km bulk shear
- 49 kt
- 0-1 km storm-relative helicity
- -48 m²/s²
- 0-3 km storm-relative helicity
- 51 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 21, 9:45 AM CDT | Severe Thunderstorm Watch | SPC | Andrew, Atchison, Buchanan, Gentry, Holt, Nodaway and 1 more | 5 hr |
| May 21, 11:30 AM CDT | Severe Thunderstorm Watch | SPC | Bollinger, Callaway, Cape Girardeau, Cole, Crawford, Franklin and 19 more | 6 hr |
| May 21, 4:00 PM CDT | Severe Thunderstorm Watch | SPC | Butler, Mississippi, New Madrid, Pemiscot, Scott, Stoddard | 5 hr |
| May 21, 4:30 PM CDT | Severe Thunderstorm Watch | SPC | Bollinger, Butler, Camden, Cape Girardeau, Carter, Cole and 27 more | 5 hr |
Nearby
Severe Thunderstorm Watches in Missouri, 1998Every severe thunderstorm watch in 1998
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.