Alert archive / Missouri / Tornado Watches in 1999
Tornado Watch 22
The Storm Prediction Center issued this tornado watch at Jan 21, 1999, 5:00 PM CST for 18 counties in Arkansas; 19 counties in Missouri; 9 counties in Oklahoma. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- Jan 21, 1999, 5:00 PM CST (23:00 UTC)
- Expired
- Jan 21, 1999, 10:00 PM CST
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
All 46 counties
Benton County, AR, Boone County, AR, Carroll County, AR, Crawford County, AR, Franklin County, AR, Howard County, AR, Johnson County, AR, Little River County, AR, Logan County, AR, Madison County, AR, Montgomery County, AR, Newton County, AR, Polk County, AR, Scott County, AR, Sebastian County, AR, Sevier County, AR, Washington County, AR, Yell County, AR, Barry County, MO, Cedar County, MO, Christian County, MO, Dade County, MO, Dallas County, MO, Douglas County, MO, Greene County, MO, Hickory County, MO, Jasper County, MO, Laclede County, MO, Lawrence County, MO, McDonald County, MO, Newton County, MO, Polk County, MO, Pulaski County, MO, Stone County, MO, Taney County, MO, Webster County, MO, Wright County, MO, Adair County, OK, Cherokee County, OK, Choctaw County, OK, Haskell County, OK, Latimer County, OK, LeFlore County, OK, McCurtain County, OK, Pushmataha County, OK, Sequoyah County, OK
The radar
The Western Arkansas radar (KSRX), 16 km from the middle of the area, began a volume at 23:01 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
21 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 21, 5:22 PM CST | Severe Thunderstorm Warning | TSA | Latimer, LeFlore | 38 min |
| Jan 21, 5:56 PM CST | Severe Thunderstorm Warning | TSA | Pushmataha | 49 min |
| Jan 21, 5:58 PM CST | Severe Thunderstorm Warning | TSA | LeFlore | 32 min |
| Jan 21, 6:11 PM CST | Tornado Warning | TSA | Sebastian | 34 min |
| Jan 21, 6:11 PM CST | Severe Thunderstorm Warning | TSA | Latimer | 34 min |
| Jan 21, 6:41 PM CST | Tornado Warning | TSA | Sebastian | 34 min |
| Jan 21, 6:41 PM CST | Severe Thunderstorm Warning | TSA | Latimer, LeFlore, Pushmataha | 49 min |
| Jan 21, 6:49 PM CST | Severe Thunderstorm Warning | TSA | Haskell | 41 min |
| Jan 21, 6:53 PM CST | Severe Thunderstorm Warning | TSA | Franklin | 52 min |
| Jan 21, 7:12 PM CST | Tornado Warning | TSA | Franklin, Sebastian | 48 min |
| Jan 21, 7:20 PM CST | Severe Thunderstorm Warning | TSA | Sebastian | 40 min |
| Jan 21, 7:28 PM CST | Severe Thunderstorm Warning | TSA | LeFlore | 47 min |
| Jan 21, 7:37 PM CST | Tornado Warning | TSA | Sebastian | 38 min |
| Jan 21, 7:44 PM CST | Severe Thunderstorm Warning | LZK | Johnson | 51 min |
| Jan 21, 8:13 PM CST | Tornado Warning | TSA | Franklin, Sebastian | 47 min |
| Jan 21, 8:22 PM CST | Severe Thunderstorm Warning | LZK | Logan | 63 min |
| Jan 21, 8:30 PM CST | Severe Thunderstorm Warning | LZK | Johnson, Newton | 45 min |
| Jan 21, 8:52 PM CST | Severe Thunderstorm Warning | TSA | Choctaw | 38 min |
| Jan 21, 9:07 PM CST | Severe Thunderstorm Warning | TSA | Pushmataha | 38 min |
| Jan 21, 9:12 PM CST | Severe Thunderstorm Warning | TSA | LeFlore | 33 min |
| Jan 21, 9:45 PM CST | Severe Thunderstorm Warning | TSA | Sebastian | 45 min |
The nearest sounding before it
Springfield, MO (KSGF), launched 12:00Z, 11.0 hours before the alert went out and 175 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
- 911 J/kg
- Mixed-layer CIN
- -51 J/kg
- Mixed-layer LCL
- 533 m above ground
- 0-6 km bulk shear
- 58 kt
- 0-1 km storm-relative helicity
- 239 m²/s²
- 0-3 km storm-relative helicity
- 287 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 6.2
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 |
|---|---|---|---|---|
| Jan 21, 2:30 PM CST | Tornado Watch | SPC | Arkansas, Ashley, Baxter, Bradley, Calhoun, Clark and 54 more | 7 hr |
| Jan 21, 4:30 PM CST | Tornado Watch | SPC | Chicot | 6 hr |
| Jan 21, 4:30 PM CST | Tornado Watch | SPC | Bollinger, Butler, Cape Girardeau, Carter, Crawford, Dent and 23 more | 6 hr |
Nearby
Tornado Watches in Missouri, 1999Tornado Watches in Arkansas, 1999Tornado Watches in Oklahoma, 1999Every tornado watch in 1999
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.