Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2000
Severe Thunderstorm Warning 306, NWS Tulsa, OK
NWS Tulsa, OK issued this severe thunderstorm warning at Sep 12, 2000, 5:04 AM CDT for Delaware County, Oklahoma. It was in force for 41 min. No storm report in the archive falls 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.
The facts
- Issued
- Sep 12, 2000, 5:04 AM CDT (10:04 UTC)
- Expired
- Sep 12, 2000, 5:45 AM CDT
- In force
- 41 min
- Issued by
- NWS Tulsa, OK
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
County Delaware County, OK
The radar
The Tulsa radar (KINX), 74 km from the middle of the area, began a volume at 10:07 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.
The nearest sounding before it
Springfield, MO (KSGF), launched 00:00Z, 10.1 hours before the alert went out and 103 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
- 1561 J/kg
- Mixed-layer CIN
- -119 J/kg
- Mixed-layer LCL
- 2128 m above ground
- 0-6 km bulk shear
- 23 kt
- 0-1 km storm-relative helicity
- 55 m²/s²
- 0-3 km storm-relative helicity
- 156 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.1
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS54 KTSA 121004 SVRTUL OKC041-121045- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TULSA OK 504 AM CDT TUE SEP 12 2000 THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... DELAWARE COUNTY IN NORTHEAST OKLAHOMA * UNTIL 545 AM CDT * AT 504 AM CDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 6 MILES SOUTHWEST OF GROVE...MOVING EAST AT 20 MPH. * SOME LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE...GROVE... CHLOETA AND JAY. HAIL TO THE SIZE OF NICKELS AND WIND GUSTS TO 60 MPH CAN BE EXPECTED IN THE WARNED AREA. LAT...LON 3657 9497 3629 9498 3629 9460 3667 9463
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 Sep 12, 3:35 AM CDT, 1 hour 29 minutes earlier.
Area forecast discussion, Sep 12, 3:35 AM CDT, 1 hour 29 minutes before
EASTERN OKLAHOMA/NORTHWEST ARKANSAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE TULSA OK 335 AM CDT TUE SEP 12 2000 OUTFLOW BOUNDARY CONTINUES TO PLOW SOUTH WELL AHEAD OF CONVECTION...AND CURRENTLY EXTENDS FROM S OF FYV TO NEAR MKO. CONVECTION HAS BEEN CONCENTRATED OVER FAR NE OK AND NW AR...AND IS HAVING SOME DIFFICULTY BACKBUILDING FARTHER SW. PROFILERS SHOWING 30 KTS OF SWLY H85 FLOW...SO STILL THINK THAT SOME BACKBUILDING IS POSSIBLE INTO THE EARLY MORNING. OUTFLOW BOUNDARY WILL PUSH INTO NRN TX LATER THIS MORNING...ALTHOUGH "COLD FRONT" (ACTUALLY MORE OF A DEWPOINT BOUNDARY) MAY NOT MAKE IT MUCH FARTHER S THAN I-40 THIS AFTERNOON AS SUGGESTED BY MESO-ETA. CHANCES OF CONVECTIVE DEVELOPMENT ALONG THIS FEATURE LOOKS SLIM...SO PLAN ON ENDING POPS FOR SRN ZONES LATER THIS MORNING OR BY EARLY AFTERNOON. WILL DEFINITELY TAKE A LAST SECOND LOOK AT 88D BEFORE DECIDING ON FINAL NUMBERS. DIFFICULT TEMP FORECAST TODAY GIVEN UNCERTAINTIES IN TIMING OF PRECIP AND LEFTOVER CLOUDS. SUSPECT THAT NRN HALF OF THE FORECAST AREA WILL SEE SOME SIGNIFICANT SUNSHINE THIS AFTERNOON...AND WITH H85 TEMPS PROGGD AROUND +18-19C...TEMPS SHOULD WARM BACK INTO THE MID TO UPPER 80S. DRY LOW-LEVEL AIR AND LIGHT WINDS WILL MAKE FOR COOL OVERNIGHT TEMPS...MAINLY FOR NE OK/NW AR. ELY/SELY SURFACE FLOW RETURNS ON WED...WITH SOME WARMING NOTED AT H85. PLAN ON LEANING TOWARD THE WARMER MAV GUIDANCE WHICH MEANS TEMPS BACK TO NEAR 90 FOR MUCH OF THE AREA. AVN DROPS NEXT FRONT INTO NRN OK BY LATE THU. NOSE OF +22C H85 AIR WILL BE POKING ACROSS NE OK...SO EXPECT TEMPS TO EASILY WARM BACK INTO THE 90S. MOISTURE WILL BE LACKING SOME WITH THIS FEATURE...SO PLAN ON KEEPING THINGS DRY FOR NOW. FCSTID = 18 FIRST GUESS NUMBERS...SUBJECT TO CHANGE AS ALWAYS TUL 87 60 90 63 / 10 0 0 0 FSM 88 62 89 62 / 50 5 0 0 MLC 88 63 90 63 / 40 5 0 0 BVO 87 56 90 60 / 10 0 0 0 FYV 84 56 86 57 / 50 5 0 0 BYV 84 56 86 57 / 50 5 0 0 MIO 85 56 88 58 / 20 0 0 0 MKO 87 59 90 62 / 30 5 0 0 F10 87 59 90 62 / 30 5 0^ 0 HHW 90 65 90 63 / 40 10 0 0 .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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.