Alert archive / Oklahoma / Tornado Warnings in 1998
Tornado Warning 49, NWS Norman, OK
NWS Norman, OK issued this tornado warning at Jun 13, 1998, 6:56 PM CDT for Canadian County, Oklahoma. It was in force for 49 min. 7 reports came from inside the area while it was in force.
The area
The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties, with what was reported inside it.
The facts
- Issued
- Jun 13, 1998, 6:56 PM CDT (23:56 UTC)
- Expired
- Jun 13, 1998, 7:45 PM CDT
- In force
- 49 min
- Issued by
- NWS Norman, OK
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
County Canadian County, OK
The radar
The Norman radar (KTLX), 76 km from the middle of the area, began a volume at 23:56 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jun 13, 7:00 PM CDT | Hail 1.5 | Calumet, OK | |
| Jun 13, 7:07 PM CDT | Hail 1.75 | Calumet, OK | |
| Jun 13, 7:14 PM CDT | Hail 2.5 | Calumet, OK | |
| Jun 13, 7:15 PM CDT | Tornado F0 | El Reno, OK | A tornado touched down briefly in open country. No damage was reported and the tornado was rated F0. |
| Jun 13, 7:16 PM CDT | Thunderstorm Wind 52 | El Reno, OK | |
| Jun 13, 7:17 PM CDT | Tornado F0 | El Reno, OK | A tornado touched down in open country. No damage was reported and the tornado was rated F0. |
| Jun 13, 7:45 PM CDT | Tornado F0 | Yukon, OK | A storm chaser observed a brief tornado touching down in an open field with no known damage. |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jun 13, 4:30 PM CDT | Tornado Watch | SPC | 6 hr |
The nearest sounding before it
Norman, OK (KOUN), launched 12:00Z, 11.9 hours before the alert went out and 72 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
- 1929 J/kg
- Mixed-layer CIN
- -165 J/kg
- Mixed-layer LCL
- 1458 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- 135 m²/s²
- 0-3 km storm-relative helicity
- 144 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.4
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KOKC 132356 RRA
TOROKC
OKC017-140045-
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NORMAN OK
656 PM CDT SAT JUN 13 1998
THE NATIONAL WEATHER SERVICE IN NORMAN HAS ISSUED A
* TORNADO WARNING FOR...
CANADIAN COUNTY IN CENTRAL OKLAHOMA
* UNTIL 745 PM CDT
* AT 656 PM CDT DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE
OF PRODUCING A TORNADO. THE MOST DANGEROUS PORTION OF THE STORM WAS
LOCATED 6 MILES SOUTHWEST OF CALUMET...MOVING EAST AT 30 MILES
PER HOUR.
* LOCATIONS IN THE WARNING INCLUDE YUKON...RICHLAND...PIEDMONT...EL
RENO AND CALUMET
TAKE COVER NOW. ABANDON MOBILE HOMES AND VEHICLES. MOVE TO A SHELTER
BELOW GROUND IF POSSIBLE. OTHERWISE...MOVE TO xAN INTERIOR ROOM OR
HALLWAY ON THE LOWEST FLOOR. STAY AWAY FROM WINDOWS.
LAT...LON 3569 9828 3543 9830 3543 9769 3571 9773
22The office that day
Everything else NWS Norman, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 12, 7:26 PM CDT | Severe Thunderstorm Warning | OUN | Love | 49 min |
| Jun 13, 4:00 PM CDT | Severe Thunderstorm Warning | OUN | Custer, Dewey | 30 min |
| Jun 13, 4:04 PM CDT | Severe Thunderstorm Warning | OUN | Garfield, Grant | 26 min |
| Jun 13, 4:27 PM CDT | Severe Thunderstorm Warning | OUN | Major | 48 min |
| Jun 13, 4:35 PM CDT | Severe Thunderstorm Warning | OUN | Blaine | 40 min |
| Jun 13, 4:46 PM CDT | Severe Thunderstorm Warning | OUN | Kay | 44 min |
| Jun 13, 5:08 PM CDT | Severe Thunderstorm Warning | OUN | Blaine, Kingfisher | 52 min |
| Jun 13, 5:16 PM CDT | Tornado Warning | OUN | Blaine, Kingfisher | 29 min |
| Jun 13, 5:25 PM CDT | Severe Thunderstorm Warning | OUN | Washita | 50 min |
| Jun 13, 5:33 PM CDT | Severe Thunderstorm Warning | OUN | Garfield, Grant | 27 min |
| Jun 13, 5:40 PM CDT | Severe Thunderstorm Warning | OUN | Kingfisher | 35 min |
| Jun 13, 5:40 PM CDT | Tornado Warning | OUN | Kingfisher | 35 min |
| Jun 13, 5:56 PM CDT | Severe Thunderstorm Warning | OUN | Logan | 49 min |
| Jun 13, 6:00 PM CDT | Severe Thunderstorm Warning | OUN | Blaine, Custer | 45 min |
| Jun 13, 6:26 PM CDT | Tornado Warning | OUN | Logan | 49 min |
| Jun 13, 6:30 PM CDT | Severe Thunderstorm Warning | OUN | Caddo, Canadian | 30 min |
| Jun 13, 6:42 PM CDT | Severe Thunderstorm Warning | OUN | Kingfisher | 33 min |
| Jun 13, 6:51 PM CDT | Severe Thunderstorm Warning | OUN | Garfield | 39 min |
Nearby
Tornado Warnings in Oklahoma, 1998Every tornado warning in 1998Tornadoes 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.