Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2000
Severe Thunderstorm Warning 453, NWS Norman, OK
NWS Norman, OK issued this severe thunderstorm warning at Oct 28, 2000, 5:31 PM CDT for Beckham County, Oklahoma. It was in force for 44 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
- Oct 28, 2000, 5:31 PM CDT (22:31 UTC)
- Expired
- Oct 28, 2000, 6:15 PM CDT
- In force
- 44 min
- Issued by
- NWS Norman, OK
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
County Beckham County, OK
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Oct 28, 5:35 PM CDT | Thunderstorm Wind | Erick, OK | Large tree limbs were downed. |
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 |
|---|---|---|---|
| Oct 28, 4:00 PM CDT | Tornado Watch | SPC | 5 hr |
The nearest sounding before it
Amarillo Airport, TX (KAMA), launched 12:00Z, 10.5 hours before the alert went out and 183 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
- 1598 J/kg
- Mixed-layer CIN
- -8 J/kg
- Mixed-layer LCL
- 505 m above ground
- 0-6 km bulk shear
- 29 kt
- 0-1 km storm-relative helicity
- 178 m²/s²
- 0-3 km storm-relative helicity
- 241 m²/s²
- Significant tornado parameter
- 1.2
- Supercell composite
- 7.5
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
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 Norman, OK wrote its last area forecast discussion before this severe thunderstorm warning went out at Oct 28, 3:45 PM CDT, 1 hour 46 minutes earlier.
Area forecast discussion, Oct 28, 3:45 PM CDT, 1 hour 46 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE NORMAN OK 345 PM CDT SAT OCT 28 2000 ACTIVE EVENING EXPECTED ACROSS ENTIRE AREA AS VIGOROUS UPPER TROF MAINTAINS AN ACTIVE SQUALL LINE ALONG PACIFIC COLD FRONT AS IT SWEEPS INTO W ZONES BY AROUND 00Z AND INTO CENTRAL OK AROUND 06Z. POPS TONIGHT AOA 90PCT AREAWIDE. RAPID MOVEMENT OF STORMS SHOULD PREVENT EXCESSIVE RAIN FROM BECOMING A PROBLEM AGAIN, BUT POTENT UPPER DYNAMICS, DRY PUNCH ALOFT, AND FAVORABLE SHEAR PROFILES ARE ALL MORE THAN ADEQUATE FOR SEVERE. DRY SLOT AND SUBSIDENCE BEHIND THE SHORTWAVE EXPECTED TO RESULT IN CLEARING FROM SW TO NE BEHIND THE LINE TONIGHT AND SUN. WILL KEEP LOW POPS IN E ZONES ON SUN FOR POSSIBLE LINGERING MORNING SHOWERS. SURFACE BOUNDARY WILL LOSE DEFINITION IN WIND AND PRESSURE FIELDS AS IT STALLS ACROSS SE OK INTO S TX SUN NIGHT, BUT SHOULD MAINTAIN ITSELF AS A ZONE OF ENHANCED MOISTURE GRADIENT. SHORTWAVE RIDGING BEHIND THE UPPER TROF EXPECTED TO LIMIT PRECIP POTENTIAL UNTIL THE LOW LEVEL MOISTURE NEAR THE COAST BEGINS RETURNING N. THAT SHOULD START TO HAPPEN LATE MON AND ESPECIALLY MON NIGHT AS THE NEXT/ NEXT/ NEXT STRONG UPPER LOW DIGS INTO THE SW AND MOVES INTO AZ. INCREASING LOW LEVEL WARM ADVECTION AND MOISTURE TRANSPORT EXPECTED TO RESULT IN NOCTURNAL CONVECTION BREAKING OUT ACROSS AREA MON NIGHT AS WARM FRONT LIFTS N INTO OK, AS SUGGESTED BY AVN. FOR TUE AFTERNOON THRU WED, SEE PARAGRAPH 1 ABOVE BUT CHANGE THIS EVENING TO TUE EVENING, AND CHANGE SUN TO WED. SCENARIO LOOKS REMARKABLY SIMILAR, SO ANOTHER ACTIVE WEATHER EVENT IS LIKELY TUE INTO TUE NIGHT. FCSTID = 24 OKC 58 73 54 74 / 100 20 0 10 HBR 55 74 51 75 / 100 0 0 10 SPS 58 76 54 78 / 100 0 0 10 GAG 53 71 46 73 / 100 10 0 10 PNC 60 73 53 75 / 100 30 0 10 DUA 62 72 59 74 / 90 30 0 10 .OUN... OK...NONE. TX...NONE. v
In the hours before
Special weather statement, Oct 28, 12:30 PM CDT, 5 hours 1 minute before
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</html>The office that day
Everything else NWS Norman, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 27, 7:20 PM CDT | Severe Thunderstorm Warning | OUN | Oklahoma | 25 min |
| Oct 27, 7:48 PM CDT | Flash Flood Warning | OUN | Oklahoma | 3 hr |
| Oct 28, 5:39 PM CDT | Severe Thunderstorm Warning | OUN | Baylor, Wilbarger | 51 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.