Alert archive / Oklahoma / Severe Thunderstorm Warnings in 1998
Severe Thunderstorm Warning 454, NWS Tulsa, OK
NWS Tulsa, OK issued this severe thunderstorm warning at Oct 5, 1998, 3:34 AM CDT for Delaware County, Oklahoma. It was in force for 26 min. 3 reports came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Oct 5, 1998, 3:34 AM CDT (08:34 UTC)
- Expired
- Oct 5, 1998, 4:00 AM CDT
- In force
- 26 min
- Issued by
- NWS Tulsa, OK
- Area
- Whole counties
County Delaware County, OK
The radar
The Tulsa radar (KINX), 73 km from the middle of the area, began a volume at 08:34 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 |
|---|---|---|---|
| Oct 5, 3:45 AM CDT | Thunderstorm Wind | Leach, OK | Power lines were blown down along the Mayes/Delaware County line. |
| Oct 5, 3:55 AM CDT | Thunderstorm Wind | Kansas, OK | The roof was blown off of a tool shed. |
| Oct 5, 4:00 AM CDT | Thunderstorm Wind | Colcord, OK | The porch roof and skirting of a mobile home were blown away. |
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 |
|---|---|---|---|
| Oct 4, 11:30 PM CDT | Tornado Watch | SPC | 6 hr |
The nearest sounding before it
Springfield, MO (KSGF), launched 00:00Z, 8.6 hours before the alert went out and 105 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
- 1811 J/kg
- Mixed-layer CIN
- -52 J/kg
- Mixed-layer LCL
- 918 m above ground
- 0-6 km bulk shear
- 47 kt
- 0-1 km storm-relative helicity
- 236 m²/s²
- 0-3 km storm-relative helicity
- 352 m²/s²
- Significant tornado parameter
- 2.7
- Supercell composite
- 19.4
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Tulsa, OK wrote its last area forecast discussion before this severe thunderstorm warning went out at Oct 4, 8:15 PM CDT, 7 hours 19 minutes earlier.
Area forecast discussion, Oct 4, 8:15 PM CDT, 7 hours 19 minutes before
EASTERN OKLAHOMA/NORTHWEST ARKANSAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE TULSA OK 815 PM CDT SUN OCT 4 1998 ISSUED FLASH FLOOD WATCH FOR NORTHEAST OKLAHOMA OVERNIGHT WITH CELLS TRAINING AND IR SAT PICS INDICATING CONTINUED BACKBUILDING POSSIBLE OVERNIGHT AS UPPER JET PIVOTS INTO SOUTHERN PLAINS. UPPED POPS TO 100% IN WATCH AREA AND ALSO UPPED POPS ELSEWHERE. FRONT IN NW KANSAS IS NOT COMING SOUTHEAST VERY QUICKLY AND MAY MEAN HEAVY RAIN THREAT WILL CONTINUE INTO MONDAY OVER MUCH OF THE AREA. ENTIRE FORECAST AREA UNDER TORNADO WATCH UNTIL 1AM BUT AM NOT SURE FAR SOUTHEAST ZONES WILL SEE PRECIP UNTIL MONDAY MORNING...SO LEFT CHANCE POPS NEAR RED RIVER OVERNIGHT. NO OTR CHANGES. ZONES AND FFA HAVE BEEN ISSUED. FCSTID = 13 .TUL... OK...FLASH FLOOD WATCH FOR TONIGHT FOR ZONES OKZ054>067. AR...NONE.
The office that day
Everything else NWS Tulsa, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 4, 7:00 PM CDT | Tornado Warning | TSA | Pawnee | 45 min |
| Oct 4, 7:35 PM CDT | Tornado Warning | TSA | Osage, Pawnee | 40 min |
| Oct 4, 8:12 PM CDT | Tornado Warning | TSA | Osage | 48 min |
| Oct 4, 8:20 PM CDT | Tornado Warning | TSA | Pawnee | 25 min |
| Oct 4, 8:30 PM CDT | Tornado Warning | TSA | Creek | 45 min |
| Oct 4, 8:39 PM CDT | Tornado Warning | TSA | Osage, Pawnee | 51 min |
| Oct 4, 9:01 PM CDT | Severe Thunderstorm Warning | TSA | Tulsa, Washington | 29 min |
| Oct 4, 9:11 PM CDT | Flash Flood Warning | TSA | Osage, Pawnee | 3 hr |
| Oct 4, 9:11 PM CDT | Severe Thunderstorm Warning | TSA | Nowata, Rogers | 34 min |
| Oct 4, 9:27 PM CDT | Tornado Warning | TSA | Osage, Pawnee | 33 min |
| Oct 4, 9:40 PM CDT | Tornado Warning | TSA | Creek, Okfuskee | 50 min |
| Oct 4, 9:49 PM CDT | Severe Thunderstorm Warning | TSA | Craig, Nowata, Rogers | 56 min |
| Oct 4, 9:54 PM CDT | Severe Thunderstorm Warning | TSA | Osage | 36 min |
| Oct 4, 10:02 PM CDT | Tornado Warning | TSA | Tulsa, Washington | 43 min |
| Oct 4, 10:11 PM CDT | Tornado Warning | TSA | Craig, Nowata | 49 min |
| Oct 4, 10:26 PM CDT | Tornado Warning | TSA | Rogers | 34 min |
| Oct 4, 10:27 PM CDT | Tornado Warning | TSA | Okfuskee | 48 min |
| Oct 4, 10:36 PM CDT | Tornado Warning | TSA | Tulsa, Washington | 39 min |
| Oct 4, 10:45 PM CDT | Severe Thunderstorm Warning | TSA | Creek, Okmulgee | 45 min |
| Oct 4, 10:49 PM CDT | Tornado Warning | TSA | Creek, Okmulgee | 41 min |
| Oct 4, 10:56 PM CDT | Tornado Warning | TSA | Rogers | 34 min |
| Oct 4, 11:07 PM CDT | Tornado Warning | TSA | Okfuskee | 38 min |
| Oct 4, 11:24 PM CDT | Severe Thunderstorm Warning | TSA | Craig | 36 min |
| Oct 4, 11:24 PM CDT | Tornado Warning | TSA | Muskogee, Okmulgee | 51 min |
| Oct 4, 11:52 PM CDT | Flash Flood Warning | TSA | Osage, Pawnee | 2 hr |
| Oct 4, 11:54 PM CDT | Severe Thunderstorm Warning | TSA | Tulsa, Wagoner | 51 min |
| Oct 5, 12:03 AM CDT | Severe Thunderstorm Warning | TSA | Creek, Okfuskee, Okmulgee | 42 min |
| Oct 5, 12:10 AM CDT | Severe Thunderstorm Warning | TSA | McIntosh, Muskogee, Wagoner | 50 min |
| Oct 5, 12:11 AM CDT | Flash Flood Warning | TSA | Nowata, Washington | 2 hr |
| Oct 5, 12:11 AM CDT | Flash Flood Warning | TSA | Tulsa | 2 hr |
| Oct 5, 12:16 AM CDT | Tornado Warning | TSA | Muskogee, Wagoner | 29 min |
| Oct 5, 12:29 AM CDT | Tornado Warning | TSA | Cherokee | 46 min |
| Oct 5, 12:35 AM CDT | Flash Flood Warning | TSA | Creek, Okmulgee | 115 min |
| Oct 5, 12:38 AM CDT | Severe Thunderstorm Warning | TSA | Creek, Okmulgee | 52 min |
| Oct 5, 12:56 AM CDT | Severe Thunderstorm Warning | TSA | Adair, Cherokee, Delaware | 49 min |
| Oct 5, 1:08 AM CDT | Severe Thunderstorm Warning | TSA | Craig | 37 min |
| Oct 5, 1:09 AM CDT | Severe Thunderstorm Warning | TSA | Muskogee, Wagoner | 51 min |
| Oct 5, 1:36 AM CDT | Severe Thunderstorm Warning | TSA | Ottawa | 39 min |
| Oct 5, 1:49 AM CDT | Severe Thunderstorm Warning | TSA | Adair, Cherokee, Delaware | 41 min |
| Oct 5, 2:01 AM CDT | Flash Flood Warning | TSA | Cherokee, Craig, Delaware, Mayes, Ottawa | 3 hr |
| Oct 5, 2:01 AM CDT | Flash Flood Warning | TSA | Creek, Okmulgee, Osage, Pawnee, Rogers, Tulsa and 2 more | 3 hr |
| Oct 5, 2:01 AM CDT | Flash Flood Warning | TSA | Muskogee | 3 hr |
| Oct 5, 2:01 AM CDT | Flash Flood Warning | TSA | Nowata | 3 hr |
| Oct 5, 3:56 AM CDT | Severe Thunderstorm Warning | TSA | Delaware | 49 min |
| Oct 5, 4:35 AM CDT | Flash Flood Warning | TSA | Cherokee, Craig, Delaware, Mayes, Ottawa | 3 hr |
| Oct 5, 4:35 AM CDT | Flash Flood Warning | TSA | Creek, Osage, Pawnee, Tulsa | 3 hr |
| Oct 5, 4:35 AM CDT | Flash Flood Warning | TSA | Nowata, Rogers, Washington | 3 hr |
| Oct 5, 4:35 AM CDT | Flash Flood Warning | TSA | Wagoner | 3 hr |
| Oct 5, 7:55 AM CDT | Flash Flood Warning | TSA | Cherokee, Mayes, Muskogee, Okmulgee, Rogers, Tulsa and 1 more | 3 hr |
| Oct 5, 7:55 AM CDT | Flash Flood Warning | TSA | Creek, Okfuskee | 3 hr |
| Oct 5, 7:55 AM CDT | Flash Flood Warning | TSA | Craig, Delaware, Ottawa | 3 hr |
| Oct 5, 7:55 AM CDT | Flash Flood Warning | TSA | Adair | 3 hr |
| Oct 5, 10:53 AM CDT | Flash Flood Warning | TSA | Haskell, McIntosh, Pittsburg | 3 hr |
| Oct 5, 10:53 AM CDT | Flash Flood Warning | TSA | Adair, Cherokee, Delaware, Muskogee, Sequoyah | 3 hr |
| Oct 5, 1:45 PM CDT | Flash Flood Warning | TSA | Latimer, Pushmataha | 3 hr |
| Oct 5, 1:45 PM CDT | Flash Flood Warning | TSA | Haskell | 3 hr |
| Oct 5, 1:46 PM CDT | Flash Flood Warning | TSA | Pushmataha | 3 hr |
| Oct 5, 1:49 PM CDT | Flash Flood Warning | TSA | Adair | 3 hr |
| Oct 5, 1:59 PM CDT | Flash Flood Warning | TSA | LeFlore, Sequoyah | 3 hr |
| Oct 5, 2:09 PM CDT | Severe Thunderstorm Warning | TSA | Pushmataha | 61 min |
| Oct 5, 2:45 PM CDT | Flash Flood Warning | TSA | LeFlore, Sequoyah | 2 hr |
| Oct 5, 3:15 PM CDT | Flash Flood Warning | TSA | LeFlore | 3 hr |
| Oct 5, 4:20 PM CDT | Severe Thunderstorm Warning | TSA | LeFlore | 25 min |
| Oct 5, 5:42 PM CDT | Severe Thunderstorm Warning | TSA | Haskell, LeFlore, Sequoyah | 33 min |
| Oct 5, 2:12 AM CDT | Severe Thunderstorm Warning | TSA | Benton | 48 min |
| Oct 5, 2:56 AM CDT | Severe Thunderstorm Warning | TSA | Benton | 49 min |
| Oct 5, 4:07 AM CDT | Tornado Warning | TSA | Benton | 23 min |
| Oct 5, 10:53 AM CDT | Flash Flood Warning | TSA | Benton, Washington | 3 hr |
| Oct 5, 2:13 PM CDT | Severe Thunderstorm Warning | TSA | Crawford | 32 min |
| Oct 5, 2:24 PM CDT | Severe Thunderstorm Warning | TSA | Madison, Washington | 66 min |
| Oct 5, 3:15 PM CDT | Flash Flood Warning | TSA | Carroll, Madison | 3 hr |
| Oct 5, 3:24 PM CDT | Severe Thunderstorm Warning | TSA | Carroll, Madison | 51 min |
Nearby
Severe Thunderstorm Warnings in Oklahoma, 1998Every severe thunderstorm warning 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.