Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2000
Severe Thunderstorm Warning 288, NWS Tulsa, OK
NWS Tulsa, OK issued this severe thunderstorm warning at Jul 21, 2000, 3:43 AM CDT for Creek County, Tulsa County, Oklahoma. It was in force for 62 min. 2 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
- Jul 21, 2000, 3:43 AM CDT (08:43 UTC)
- Expired
- Jul 21, 2000, 4:45 AM CDT
- In force
- 62 min
- Issued by
- NWS Tulsa, OK
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
Counties Creek County, OK, Tulsa County, OK
The radar
The Tulsa radar (KINX), 63 km from the middle of the area, began a volume at 08:46 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 |
|---|---|---|---|
| Jul 21, 4:00 AM CDT | Thunderstorm Wind | Bristow, OK | Thunderstorm winds blew down a few trees on the north side of Bristow. |
| Jul 21, 4:00 AM CDT | Thunderstorm Wind | Bristow, OK | Thunderstorm winds blew a garage door out and also blew the roof off an out building. |
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 |
|---|---|---|---|
| Jul 20, 11:45 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Norman, OK (KOUN), launched 00:00Z, 8.7 hours before the alert went out and 135 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
- 1499 J/kg
- Mixed-layer CIN
- -118 J/kg
- Mixed-layer LCL
- 1859 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- 41 m²/s²
- 0-3 km storm-relative helicity
- 140 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 4.5
The text
As transmitted, in the capitals the NWS used until 2016.
926 WUUS54 KTSA 210844 SVRTUL OKC037-143-210945- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TULSA OK 343 AM CDT FRI JUL 21 2000 THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... CREEK COUNTY IN NORTHEAST OKLAHOMA TULSA COUNTY IN NORTHEAST OKLAHOMA * UNTIL 445 AM CDT * AT 343 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 4 MILES NORTH OF BRISTOW...MOVING EAST AT 30 MPH. * SOME LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE...SAPULPA... KELLYVILLE...KIEFER...MOUNDS...BRISTOW...GLENPOOL...JENKS AND BIXBY. HAIL TO THE SIZE OF NICKLES AND WIND GUSTS TO 65 MPH CAN BE EXPECTED IN THE WARNED AREA. CALL 1-800-722-2778 TO REPORT SEVERE WEATHER TO THE NATIONAL WEATHER SERVICE. LAT...LON 3596 9649 3579 9644 3588 9576 3612 9582
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 Jul 20, 9:20 PM CDT, 6 hours 23 minutes earlier.
Area forecast discussion, Jul 20, 9:20 PM CDT, 6 hours 23 minutes before
EASTERN OKLAHOMA/NORTHWEST ARKANSAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE TULSA OK 920 PM CDT THU JUL 20 2000 LARGE MCS IS EXPECTED TO CONTINUE TO ORGANIZE OVER KANSAS AND SPREAD SOUTHEAST INTO THE AREA BY MORNING. 00Z ETA SHOWS STRONG SHORTWAVE AND UVM THAT WILL KEEP PCP GOING WITH DIFFLUENT 850-300 MB THICKNESS GRADIENT AND 850 THETE RIDGE ALL IN FAVORABLE AREAS FOR MCS MOVING THIS WAY AND SYSTEM SHOULD BE BIG ENOUGH THAT EVEN IF THE CORE STAYS OVER CENTRAL OKLAHOMA OUTFLOW AND REDEVELOPMENT SHOULD CONTINUE TO GIVE E OK/NW ARK LIKELY POPS INTO FRI MORNING. WIND FIELDS ARE SIMILAR TO LAST NIGHTS SO SVR WIND THREAT ON LEADING EDGE MAY AGAIN EVOLVE OVERNIGHT. PROBLEM WILL BE TIMING OF ONSET AND HOW LONG PCP WILL LINGER ON FRI. THE HEAVIEST RAINS SHOULD BE IN KS WHERE CONVECTION IS DEVELOPING IN BANDS AHEAD OF ONCOMING STORMS...BUT THREAT FOR HEAVY RAIN COULD DEVELOP IN THE AREA FRIDAY MORNING. WILL UP POPS TO CATEGORICAL IN NE OK OVERNIGHT AND UP POPS TO LIKELY IN MOST AREAS FRI MORN. WILL MENTION HEAVY RAIN THREAT IN NE OK AS WELL. /13 .TUL... AR...NONE. OK...NONE.
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.