Alert archive / Missouri / Severe Thunderstorm Watches in 1998
Severe Thunderstorm Watch 623
The Storm Prediction Center issued this severe thunderstorm watch at Jun 20, 1998, 12:00 AM CDT for 5 states. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- Jun 20, 1998, 12:00 AM CDT (05:00 UTC)
- Expired
- Jun 20, 1998, 5:00 AM CDT
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
All 61 counties
Clay County, AR, Craighead County, AR, Greene County, AR, Mississippi County, AR, Poinsett County, AR, Alexander County, IL, Gallatin County, IL, Hardin County, IL, Jackson County, IL, Johnson County, IL, Massac County, IL, Pope County, IL, Pulaski County, IL, Saline County, IL, Union County, IL, Williamson County, IL, Ballard County, KY, Calloway County, KY, Carlisle County, KY, Crittenden County, KY, Fulton County, KY, Graves County, KY, Hickman County, KY, Livingston County, KY, Lyon County, KY, Marshall County, KY, McCracken County, KY, Bollinger County, MO, Butler County, MO, Cape Girardeau County, MO, Carter County, MO, Dunklin County, MO, Iron County, MO, Madison County, MO, Mississippi County, MO, New Madrid County, MO, Pemiscot County, MO, Perry County, MO, Reynolds County, MO, Ripley County, MO, Saint Francois County, MO, Sainte Genevieve County, MO, Scott County, MO, Stoddard County, MO, Wayne County, MO, Benton County, TN, Carroll County, TN, Crockett County, TN, Decatur County, TN, Dyer County, TN, Gibson County, TN, Haywood County, TN, Henderson County, TN, Henry County, TN, Lake County, TN, Lauderdale County, TN, Madison County, TN, Obion County, TN, Perry County, TN, Tipton County, TN, Weakley County, TN
Warnings issued inside it
14 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 20, 12:08 AM CDT | Severe Thunderstorm Warning | PAH | Bollinger | 52 min |
| Jun 20, 12:12 AM CDT | Severe Thunderstorm Warning | PAH | Butler, Ripley | 58 min |
| Jun 20, 12:29 AM CDT | Severe Thunderstorm Warning | PAH | Stoddard | 51 min |
| Jun 20, 12:51 AM CDT | Severe Thunderstorm Warning | PAH | New Madrid, Scott | 54 min |
| Jun 20, 12:55 AM CDT | Severe Thunderstorm Warning | MEG | Dunklin, Pemiscot | 65 min |
| Jun 20, 1:12 AM CDT | Severe Thunderstorm Warning | PAH | Butler | 33 min |
| Jun 20, 1:23 AM CDT | Flash Flood Warning | PAH | Butler | 2 hr |
| Jun 20, 1:31 AM CDT | Severe Thunderstorm Warning | MEG | Lake | 34 min |
| Jun 20, 1:55 AM CDT | Severe Thunderstorm Warning | MEG | Dyer, Obion | 45 min |
| Jun 20, 2:57 AM CDT | Severe Thunderstorm Warning | PAH | Franklin, Williamson | 48 min |
| Jun 20, 3:22 AM CDT | Severe Thunderstorm Warning | PAH | Saline | 53 min |
| Jun 20, 3:23 AM CDT | Flash Flood Warning | PAH | Butler | 2 hr |
| Jun 20, 4:26 AM CDT | Severe Thunderstorm Warning | PAH | Wayne | 64 min |
| Jun 20, 4:39 AM CDT | Severe Thunderstorm Warning | LSX | Iron, Madison | 46 min |
The nearest sounding before it
Little Rock, AR (KLZK), launched 00:00Z, 5.0 hours before the alert went out and 243 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
- 3844 J/kg
- Mixed-layer CIN
- -28 J/kg
- Mixed-layer LCL
- 1321 m above ground
- 0-6 km bulk shear
- 23 kt
- 0-1 km storm-relative helicity
- 16 m²/s²
- 0-3 km storm-relative helicity
- 74 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 |
|---|---|---|---|---|
| Jun 19, 10:00 PM CDT | Severe Thunderstorm Watch | SPC | Audrain, Boone, Buchanan, Caldwell, Callaway, Carroll and 23 more | 6 hr |
| Jun 19, 10:30 PM CDT | Severe Thunderstorm Watch | SPC | Barton, Bates, Benton, Camden, Cass, Cedar and 36 more | 6 hr |
| Jun 20, 3:15 PM CDT | Tornado Watch | SPC | Atchison | 6 hr |
Nearby
Severe Thunderstorm Watches in Missouri, 1998Severe Thunderstorm Watches in Tennessee, 1998Severe Thunderstorm Watches in Illinois, 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.