Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2001
Severe Thunderstorm Warning 576, NWS Norman, OK
NWS Norman, OK issued this severe thunderstorm warning at Sep 15, 2001, 4:18 PM CDT for Kiowa County, Washita County, Oklahoma. It was in force for 42 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
- Sep 15, 2001, 4:18 PM CDT (21:18 UTC)
- Expired
- Sep 15, 2001, 5:00 PM CDT
- In force
- 42 min
- Issued by
- NWS Norman, OK
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
Counties Kiowa County, OK, Washita County, OK
The nearest sounding before it
Norman, OK (KOUN), launched 12:00Z, 9.3 hours before the alert went out and 145 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
- 482 J/kg
- Mixed-layer CIN
- -8 J/kg
- Mixed-layer LCL
- 562 m above ground
- 0-6 km bulk shear
- 23 kt
- 0-1 km storm-relative helicity
- 66 m²/s²
- 0-3 km storm-relative helicity
- 160 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.2
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 Sep 15, 3:30 PM CDT, 48 minutes earlier.
Area forecast discussion, Sep 15, 3:30 PM CDT, 48 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE NORMAN OK 330 PM CDT SAT SEP 15 2001 VERY MOIST AMS REMAINS IN PLACE ACRS THE FA THIS AFTN AND IS EXPECTED TO REMAIN OVER THE AREA INTO EARLY PART OF NEXT WEEK. LARGE ARE OF RAIN AND TSTMS WHICH MOVED SLOWLY EWD DURG MOST OF THE FA DAY DROPPED 4 TO 5 INCH AMOUNTS IN PARTS OF SCNTRL OK. THIS PRECIP AREA WILL CONT TO SHIFT SLOWLY EWD THIS EVENING AWAY FROM AREAS WHICH SAW HEAVY RAIN EARLIER. LESS WIDESPREAD BUT MORE INTENSE TSTMS HAVE DVLPD IN WCNTRL OK LATE THIS AFTN ALG OUTFLO BNDRY FROM EALIER COMPLEX. CONDITIONS WILL REMAIN FAVORABLE FOR MORE PRECIP OVERNIGHT AS FA REMAINS IN AREA OF WAA WITH SEVERAL MINOR IMPULSES MOVING THROUGH BROADLY DIFLUENT WLY UPR FLO. DIFFICULTY WILL BE IN PINPOINTING WHERE HEAVIEST RAIN WILL FALL. WILL NOT ISSUE FFA ATTM BUT WILL MENTION POSSIBILITY OF HEAVY RAINFALL IN ZONES. UNSETTLED PATTERN WILL CONTINUE UNTIL ABOUT WEDNESDAY WHEN NWLY FLO S/W DRIVE A CDFNT THROUGH THE AREA. FCSTID = 2 OKC 65 80 65 82 / 60 40 30 40 HBR 64 84 65 84 / 40 30 40 40 SPS 66 86 67 86 / 40 30 30 40 GAG 63 82 63 80 / 40 30 50 40 PNC 65 80 65 80 / 50 40 40 40 DUA 66 82 66 85 / 70 60 30 30 .OUN... OK...NONE. TX...NONE.
The office that day
Everything else NWS Norman, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 15, 2:51 PM CDT | Severe Thunderstorm Warning | OUN | Custer, Roger Mills | 34 min |
| Sep 15, 5:00 PM CDT | Severe Thunderstorm Warning | OUN | Caddo, Kiowa | 45 min |
| Sep 15, 5:16 PM CDT | Severe Thunderstorm Warning | OUN | Comanche | 29 min |
| Sep 15, 5:44 PM CDT | Severe Thunderstorm Warning | OUN | Comanche, Greer, Jackson, Kiowa | 46 min |
| Sep 15, 6:36 PM CDT | Severe Thunderstorm Warning | OUN | Jackson, Tillman | 39 min |
Nearby
Severe Thunderstorm Warnings in Oklahoma, 2001Every severe thunderstorm warning in 2001
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.