Alert archive / Oklahoma / Tornado Watches in 1998
Tornado Watch 531
The Storm Prediction Center issued this tornado watch at Jun 8, 1998, 8:45 PM CDT for 18 counties in Oklahoma. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- Jun 8, 1998, 8:45 PM CDT (01:45 UTC)
- Expired
- Jun 9, 1998, 2:00 AM CDT
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
Counties Canadian County, OK, Cleveland County, OK, Coal County, OK, Garvin County, OK, Grady County, OK, Haskell County, OK, Hughes County, OK, Latimer County, OK, LeFlore County, OK, McClain County, OK, McIntosh County, OK, Okfuskee County, OK, Oklahoma County, OK, Pittsburg County, OK, Pontotoc County, OK, Pottawatomie County, OK, Pushmataha County, OK, Seminole County, OK
The radar
The Norman radar (KTLX), 54 km from the middle of the area, began a volume at 01:45 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
9 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 8, 8:50 PM CDT | Tornado Warning | TSA | Haskell, McIntosh, Pittsburg | 70 min |
| Jun 8, 8:51 PM CDT | Severe Thunderstorm Warning | OUN | Oklahoma | 39 min |
| Jun 8, 9:25 PM CDT | Tornado Warning | TSA | Latimer | 50 min |
| Jun 8, 9:28 PM CDT | Severe Thunderstorm Warning | OUN | Lincoln, Oklahoma | 47 min |
| Jun 8, 9:29 PM CDT | Flash Flood Warning | TSA | Haskell, Pittsburg | 3 hr |
| Jun 8, 9:55 PM CDT | Tornado Warning | TSA | Haskell, Latimer, LeFlore | 65 min |
| Jun 8, 10:16 PM CDT | Severe Thunderstorm Warning | TSA | Creek, Okfuskee | 44 min |
| Jun 8, 10:44 PM CDT | Tornado Warning | TSA | LeFlore | 46 min |
| Jun 8, 11:33 PM CDT | Severe Thunderstorm Warning | TSA | LeFlore | 42 min |
The nearest sounding before it
Norman, OK (KOUN), launched 00:00Z, 1.8 hours before the alert went out and 61 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
- 2377 J/kg
- Mixed-layer CIN
- -72 J/kg
- Mixed-layer LCL
- 1123 m above ground
- 0-6 km bulk shear
- 53 kt
- 0-1 km storm-relative helicity
- 270 m²/s²
- 0-3 km storm-relative helicity
- 254 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 11.8
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 8, 11:00 PM CDT | Severe Thunderstorm Watch | SPC | Adair, Cherokee, Craig, Creek, Delaware, Mayes and 9 more | 5 hr |
| Jun 9, 3:15 PM CDT | Tornado Watch | SPC | Carter, Coal, Comanche, Cotton, Garvin, Jefferson and 7 more | 6 hr |
Nearby
Tornado 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; radar from the NEXRAD Level II archive.