Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2000
Severe Thunderstorm Warning 122, NWS Tulsa, OK
NWS Tulsa, OK issued this severe thunderstorm warning at Apr 27, 2000, 1:07 AM CDT for Osage County, Oklahoma. It was in force for 53 min. 1 report 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
- Apr 27, 2000, 1:07 AM CDT (06:07 UTC)
- Expired
- Apr 27, 2000, 2:00 AM CDT
- In force
- 53 min
- Issued by
- NWS Tulsa, OK
- Area
- Whole counties
County Osage County, OK
The radar
The Tulsa radar (KINX), 90 km from the middle of the area, began a volume at 06:10 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 27, 1:20 AM CDT | Hail 0.75 | Burbank, OK |
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 nearest sounding before it
Lamont, OK (KLMN), launched 00:00Z, 6.1 hours before the alert went out and 97 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1815 m above ground
- 0-6 km bulk shear
- 66 kt
- 0-1 km storm-relative helicity
- 40 m²/s²
- 0-3 km storm-relative helicity
- 149 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS54 KTSA 270611 SVRTUL OKC113-270700- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TULSA OK 107 AM CDT THU APR 27 2000 THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... OSAGE COUNTY IN NORTHEAST OKLAHOMA * UNTIL 200 AM CDT * AT 107 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 2 MILES NORTH OF PONCA CITY...MOVING SOUTHEAST AT 40 MPH. ANOTHER SEVERE THUNDERSTORM WAS LOCATED 2 MILES SOUTH OF GRAINOLA...MOVING SOUTHEAST AT 40 MPH. HAIL TO THE SIZE OF NICKELS AND WIND GUSTS TO 60 MPH CAN BE EXPECTED IN THE WARNED AREA. CALL 1-800-722-277b8 TO REPORT SEVERE WEATHER TO THE NATIONAL WEATHER SERVICE.
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 Apr 26, 9:50 PM CDT, 3 hours 17 minutes earlier.
Area forecast discussion, Apr 26, 9:50 PM CDT, 3 hours 17 minutes before
EASTERN OKLAHOMA/NORTHWEST ARKANSAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE TULSA OK 950 PM CDT WED APR 26 2000 02Z SURFACE ANALYSIS SHOWING FRONTAL BOUNDARY CONTINUING TO MAKE GOOD PROGRESS TO THE SOUTH AND EAST ACROSS KANSAS THIS EVENING. LITTLE IN THE WAY OF ANY ASSOCIATED CONVECTION THRU THE EVENING...BUT DO EXPECT TO SEE MORE ACTIVITY DEVELOP OVER THE NEXT FEW HOURS. PROFILER WINDS IN THE LOWER LEVELS STILL RATHER LIGHT OVER THE AREA...BUT SHOULD INCREASE INTO THE NIGHTTIME HOURS. PROFILERS TO THE WEST GENERALLY IN THE 20-25 KNOT RANGE BELOW 850MB. WILL NOT NEED TO MAKE MANY CHANGES THIS EVENING...BUT WILL UP THE POPS JUST SLIGHTLY IN NORTHERN AREAS WHERE ONLY SLIGHT CHANCE MENTIONED NOW. .TUL... AR...NONE. OK...NONE.
The office that day
Everything else NWS Tulsa, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 27, 1:36 AM CDT | Severe Thunderstorm Warning | TSA | Pawnee | 39 min |
| Apr 27, 2:25 AM CDT | Severe Thunderstorm Warning | TSA | Creek | 50 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.