Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2000
Severe Thunderstorm Warning 224, NWS Shreveport, LA
NWS Shreveport, LA issued this severe thunderstorm warning at May 12, 2000, 6:35 PM CDT for McCurtain County, Oklahoma. It was in force for 55 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- May 12, 2000, 6:35 PM CDT (23:35 UTC)
- Expired
- May 12, 2000, 7:30 PM CDT
- In force
- 55 min
- Issued by
- NWS Shreveport, LA
- Area
- Whole counties
County McCurtain County, OK
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| May 12, 5:00 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
The nearest sounding before it
Shreveport, LA (KSHV), launched 12:00Z, 11.6 hours before the alert went out and 205 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
- 2299 J/kg
- Mixed-layer CIN
- -203 J/kg
- Mixed-layer LCL
- 616 m above ground
- 0-6 km bulk shear
- 13 kt
- 0-1 km storm-relative helicity
- 69 m²/s²
- 0-3 km storm-relative helicity
- 182 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS54 KSHV 122336 SVRSHV OKC089-130030- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE SHREVEPORT LA 635 PM CDT FRI MAY 12 2000 THE NATIONAL WEATHER SERVICE IN SHREVEPORT HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... MCCURTAIN COUNTY IN OKLAHOMA * UNTIL 730 PM CDT * AT 635 PM CDT...THE SHREVEPORT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM ALONG A LINE EXTENDING FROM 25 MILES NORTHWEST OF BROKEN BOW TO 31 MILES WEST OF BROKEN BOW... MOVING EAST AT 25 MPH. * SEVERE THUNDERSTORMS WILL BE NEAR... PINE CREEK LAKE AT 640 PM CDT BROKEN BOW LAKE AROUND 720 PM CDT BROKEN BOW AT 730 PM CDT THIS LINE OF STORMS WILL LIKELY PRODUCE STRONG DAMAGING WINDS IN EXCESS OF 60 MPH...AND LARGE HAIL. BE ALERT FOR DOWNED TREES AND POWER LINES. IF YOU ARE OUTSIDE...GO TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A STRONG BUILDING. STAY AWAY FROM W$INDOWS. REPEATING...THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM WARNING FOR... MCCURTAIN COUNTY IN OKLAHOMA UNTIL 730 PM CDT.
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 Shreveport, LA wrote its last area forecast discussion before this severe thunderstorm warning went out at May 12, 3:00 PM CDT, 3 hours 35 minutes earlier.
Area forecast discussion, May 12, 3:00 PM CDT, 3 hours 35 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE SHREVEPORT LA 300 PM CDT FRI MAY 12 2000 SURFACE COLD FRONT OVER FROM MCALESTER TO JUST WEST OF DALLAS TO NEAR BROWNWOOD TEXAS AT MID AFTERNOON. MSAS CURRENT SURFACE DATA SHOWS LIFTED INDEX VALUES FROM -9 TO -10. CAPE VALUES LATE THIS AFTERNOON ARE NEAR 4000 J/KM. WHEN CAP BREAKS STORMS SHOULD FIRE ACROSS SOUTHEAST OKLAHOMA AND NORTH CENTRAL TEXAS AND MOVE INTO NORTHWEST PART OF FORECAST AREA BY EARLY EVENING. PLENTY OF LOW LEVEL MOISTURE IS AVAILABLE BETWEEN 1000 MB AND 850 MB. MID LEVEL MOISTURE SHOULD INCREASE DURING THE EVENING AND DEWPOINTS ARE IN THE LOWER TO MID 70S. ALTHOUGH A STRONG CAP IS IN PLACE...UPPER LEVEL DIVERGENCE WILL ENHANCE THUNDERSTORM DEVELOPMENT OVERNIGHT TONIGHT. ETA UPPER AIR SOUNDING FORECASTS SHOW A MAX TEMPERATURE AROUND 90 DEGREES WILL WEAKEN THE CAP OVER SOUTHEAST OKLAHOMA BY LATE AFTERNOON AND RAISE PRECIPITABLE WATER VALUES TO 1.5 INCHES. ETA FORECASTS K INDICES TO 35 AND TOTAL TOTAL VALUES TO 55. WITH LITTLE TURNING OF THE WINDS LARGE HAIL AND DAMAGING WINDS...ALONG WITH HEAVY RAINFALL WILL BE THE PRIMARY THREATS. AS FRONT MOVES THROUGH DURING THE EVENING OVER THE NORTHWEST SECTIONS AIR MASS WILL STABILIZE AND BEGIN DRYING OUT BY MORNING. NORTH LOUISIANA AND EAST CENTRAL TEXAS WILL SEE BEST CHANCE OF SEVERE AFTER MIDNIGHT UNTIL MORNING WITH ACTIVITY WEAKENING. SCATTERED SHOWERS AND THUNDERSTORMS WILL LIKELY REDEVELOP OVER CENTRAL LOUISIANA ALONG FRONT DURING EARLY AFTERNOON. SOME CONCERN ABOUT HEAVY RAINFALL THREAT BUT MODELS MOVING FRONT ACROSS FORECAST AREA BETWEEN 13/00 AND 13/15Z. DO NOT THINK FRONT WILL SLOW ENOUGH FOR FLASH FLOODING. WILL KEEP SEVERE IN ALL AREAS TONIGHT. ETA ENDS RAINFALL OVER THE NORTHWEST IN THE MORNING AND ALL OTHER AREAS DURING THE AFTERNOON. TEMPERATURES SHOULD NOT RISE MUCH DUE TO CLOUDS...RAIN AND COLDER AIR. BELIEVE NGM GUIDANCE A BIT OPTIMISTIC FOR HIGHS SATURDAY AND CLEAR SKIES TO RAPIDLY BEHIND FRONT. A COOL NIGHT FOR THE THIRD PERIOD WITH MID TO UPPER 50S OVER MOST OF THE FORECAST AREA. SUNSHINE SUNDAY WILL BE SOMEWHAT OFFSET BY COOL MORNING AND EAST TO NORTHEAST WIND AROUND SURFACE HIGH CENTERED TO THE NORTH AND NORTHEAST. NEXT CHANCE OF RAIN WILL COME AT THE END OF NEXT WEEK. 09 SHV 66/79/56/78 5510 MLU 68/79/57/77 4510 TXK 63/76/52/77 6410 TYR 65/79/54/80 5510 LFK 68/80/57/82 4410 .SHV...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.