Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2000
Severe Thunderstorm Warning 99, NWS Tulsa, OK
NWS Tulsa, OK issued this severe thunderstorm warning at Apr 23, 2000, 2:00 PM CDT for Tulsa County, Oklahoma. It was in force for 45 min. 4 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
- Apr 23, 2000, 2:00 PM CDT (19:00 UTC)
- Expired
- Apr 23, 2000, 2:45 PM CDT
- In force
- 45 min
- Issued by
- NWS Tulsa, OK
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
County Tulsa County, OK
The radar
The Tulsa radar (KINX), 34 km from the middle of the area, began a volume at 19:00 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 |
|---|---|---|---|
| Apr 23, 2:00 PM CDT | Hail 0.75 | Tulsa, OK | Dime size hail fell near the intersection of 15th street and Lewis. |
| Apr 23, 2:07 PM CDT | Hail 0.88 | Tulsa, OK | Nickel size hail fell near the intersection of Pine and Harvard. |
| Apr 23, 2:09 PM CDT | Hail 0.75 | Tulsa, OK | Dime size hail was reported near the intersection of Admiral and Yale. |
| Apr 23, 2:10 PM CDT | Hail 0.88 | Tulsa, OK | Nickel size hail fell near the intersection of Independence and Harvard. |
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 |
|---|---|---|---|
| Apr 23, 1:45 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
The nearest sounding before it
Norman, OK (KOUN), launched 12:00Z, 7.0 hours before the alert went out and 171 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
- 76 J/kg
- Mixed-layer CIN
- -265 J/kg
- Mixed-layer LCL
- 1004 m above ground
- 0-6 km bulk shear
- 63 kt
- 0-1 km storm-relative helicity
- 340 m²/s²
- 0-3 km storm-relative helicity
- 352 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
The text
As transmitted, in the capitals the NWS used until 2016.
969 WUUS54 KTSA 231901 SVRTUL OKC143-231945- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TULSA OK 200 PM CDT SUN APR 23 2000 THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... NORTHERN TULSA COUNTY IN NORTHEAST OKLAHOMA * UNTIL 245 PM CDT * AT 200 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM OVER TULSA...MOVING NORTHEAST AT 15 MPH. * SOME LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE... COLLINSVILLE...OWASSO AND TULSA HAIL TO THE SIZE OF QUARTERS AND WIND GUSTS TO 60 MPH CAN BE EXPECTED IN THE WARNED AREA. BE ALERT FOR RAPIDLY CHANGING WEATHER CONDITIONS AS STORMS APPROACH. CALL 1-800-722-2778 TO REPORT SEVERE WEATHER TO THE NATIONAL WEATHER SERVICE. LAT...LON 3611 9606 3605 9595 3629 9574 3646 9590
The office that day
Everything else NWS Tulsa, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 23, 1:13 PM CDT | Severe Thunderstorm Warning | TSA | Creek, Tulsa | 47 min |
| Apr 23, 1:32 PM CDT | Severe Thunderstorm Warning | TSA | Pittsburg | 43 min |
| Apr 23, 1:56 PM CDT | Severe Thunderstorm Warning | TSA | Cherokee | 49 min |
| Apr 23, 2:10 PM CDT | Tornado Warning | TSA | Latimer, Pittsburg | 35 min |
| Apr 23, 2:13 PM CDT | Severe Thunderstorm Warning | TSA | Latimer, Pushmataha | 47 min |
| Apr 23, 2:15 PM CDT | Severe Thunderstorm Warning | TSA | Muskogee | 45 min |
| Apr 23, 2:22 PM CDT | Severe Thunderstorm Warning | TSA | McIntosh | 38 min |
| Apr 23, 2:23 PM CDT | Tornado Warning | TSA | Pushmataha | 37 min |
| Apr 23, 2:38 PM CDT | Tornado Warning | TSA | Latimer | 52 min |
| Apr 23, 2:40 PM CDT | Severe Thunderstorm Warning | TSA | Pittsburg | 50 min |
| Apr 23, 2:44 PM CDT | Severe Thunderstorm Warning | TSA | Pawnee | 61 min |
| Apr 23, 2:57 PM CDT | Tornado Warning | TSA | Pushmataha | 48 min |
| Apr 23, 3:04 PM CDT | Tornado Warning | TSA | LeFlore | 56 min |
| Apr 23, 3:28 PM CDT | Tornado Warning | TSA | Latimer | 32 min |
| Apr 23, 3:29 PM CDT | Severe Thunderstorm Warning | TSA | Osage | 61 min |
| Apr 23, 3:42 PM CDT | Tornado Warning | TSA | Pushmataha | 48 min |
| Apr 23, 3:55 PM CDT | Severe Thunderstorm Warning | TSA | Muskogee | 50 min |
| Apr 23, 4:02 PM CDT | Severe Thunderstorm Warning | TSA | Nowata, Washington | 58 min |
| Apr 23, 4:18 PM CDT | Severe Thunderstorm Warning | TSA | McIntosh | 42 min |
| Apr 23, 4:18 PM CDT | Severe Thunderstorm Warning | TSA | Adair, Sequoyah | 57 min |
| Apr 23, 4:26 PM CDT | Severe Thunderstorm Warning | TSA | Osage | 64 min |
| Apr 23, 4:40 PM CDT | Severe Thunderstorm Warning | TSA | Craig | 50 min |
| Apr 23, 4:42 PM CDT | Severe Thunderstorm Warning | TSA | Creek, Okmulgee | 48 min |
| Apr 23, 4:45 PM CDT | Severe Thunderstorm Warning | TSA | Okfuskee | 45 min |
| Apr 23, 4:50 PM CDT | Severe Thunderstorm Warning | TSA | Nowata, Rogers, Tulsa, Washington | 40 min |
| Apr 23, 4:57 PM CDT | Severe Thunderstorm Warning | TSA | McIntosh | 63 min |
| Apr 23, 5:25 PM CDT | Severe Thunderstorm Warning | TSA | Rogers, Tulsa | 50 min |
| Apr 23, 5:26 PM CDT | Severe Thunderstorm Warning | TSA | Okfuskee, Okmulgee | 49 min |
| Apr 23, 5:33 PM CDT | Severe Thunderstorm Warning | TSA | Pittsburg | 57 min |
| Apr 23, 5:36 PM CDT | Severe Thunderstorm Warning | TSA | Creek | 39 min |
| Apr 23, 6:02 PM CDT | Severe Thunderstorm Warning | TSA | McIntosh | 58 min |
Nearby
Severe Thunderstorm Warnings in Oklahoma, 2000Every severe thunderstorm warning in 2000
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.