Alert archive / Arkansas / Tornado Watches in 1998
Tornado Watch 217
The Storm Prediction Center issued this tornado watch at Apr 15, 1998, 6:15 PM CDT for 38 counties in Arkansas; 7 counties in Oklahoma. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Apr 15, 1998, 6:15 PM CDT (23:15 UTC)
- Expired
- Apr 16, 1998, 12:00 AM CDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
All 45 counties
Baxter County, AR, Benton County, AR, Boone County, AR, Carroll County, AR, Clay County, AR, Cleburne County, AR, Conway County, AR, Crawford County, AR, Faulkner County, AR, Franklin County, AR, Fulton County, AR, Garland County, AR, Greene County, AR, Independence County, AR, Izard County, AR, Jackson County, AR, Johnson County, AR, Lawrence County, AR, Logan County, AR, Madison County, AR, Marion County, AR, Montgomery County, AR, Newton County, AR, Perry County, AR, Polk County, AR, Pope County, AR, Pulaski County, AR, Randolph County, AR, Saline County, AR, Scott County, AR, Searcy County, AR, Sebastian County, AR, Sharp County, AR, Stone County, AR, Van Buren County, AR, Washington County, AR, White County, AR, Yell County, AR, Adair County, OK, Coal County, OK, Haskell County, OK, Latimer County, OK, LeFlore County, OK, Pittsburg County, OK, Sequoyah County, OK
Warnings issued inside it
17 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 15, 6:31 PM CDT | Severe Thunderstorm Warning | TSA | Benton, Carroll | 59 min |
| Apr 15, 7:01 PM CDT | Severe Thunderstorm Warning | TSA | Latimer, LeFlore | 59 min |
| Apr 15, 7:04 PM CDT | Severe Thunderstorm Warning | TSA | Sebastian | 56 min |
| Apr 15, 7:10 PM CDT | Severe Thunderstorm Warning | TSA | Franklin | 65 min |
| Apr 15, 7:40 PM CDT | Severe Thunderstorm Warning | TSA | Pittsburg | 50 min |
| Apr 15, 7:47 PM CDT | Severe Thunderstorm Warning | LZK | Johnson | 48 min |
| Apr 15, 8:20 PM CDT | Severe Thunderstorm Warning | TSA | LeFlore | 40 min |
| Apr 15, 8:26 PM CDT | Severe Thunderstorm Warning | LZK | Pope | 49 min |
| Apr 15, 8:40 PM CDT | Severe Thunderstorm Warning | TSA | Sebastian | 50 min |
| Apr 15, 8:45 PM CDT | Severe Thunderstorm Warning | TSA | LeFlore, Pushmataha | 60 min |
| Apr 15, 8:52 PM CDT | Severe Thunderstorm Warning | LZK | Johnson | 48 min |
| Apr 15, 9:06 PM CDT | Tornado Warning | LZK | Van Buren | 64 min |
| Apr 15, 10:04 PM CDT | Tornado Warning | LZK | Cleburne, Stone | 46 min |
| Apr 15, 10:49 PM CDT | Tornado Warning | LZK | Independence, Izard, Stone | 61 min |
| Apr 15, 11:11 PM CDT | Severe Thunderstorm Warning | LZK | Polk | 64 min |
| Apr 15, 11:29 PM CDT | Severe Thunderstorm Warning | LZK | Pulaski | 31 min |
| Apr 15, 11:55 PM CDT | Severe Thunderstorm Warning | MEG | Randolph | 50 min |
The nearest sounding before it
Springfield, MO (KSGF), launched 12:00Z, 11.3 hours before the alert went out and 184 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
- 557 J/kg
- Mixed-layer CIN
- -28 J/kg
- Mixed-layer LCL
- 846 m above ground
- 0-6 km bulk shear
- 60 kt
- 0-1 km storm-relative helicity
- 280 m²/s²
- 0-3 km storm-relative helicity
- 315 m²/s²
- Significant tornado parameter
- 1.1
- Supercell composite
- 4.9
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 |
|---|---|---|---|---|
| Apr 14, 9:15 PM CDT | Tornado Watch | SPC | Alfalfa, Garfield, Grant, Kay, Major, Noble and 4 more | 6 hr |
| Apr 14, 11:45 PM CDT | Tornado Watch | SPC | Craig, Ottawa | 5 hr |
Nearby
Tornado Watches in Arkansas, 1998Tornado Watches in Oklahoma, 1998Every tornado 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.