Alert archive / Oklahoma / Severe Thunderstorm Warnings in 1996
Severe Thunderstorm Warning 649, NWS Norman, OK
NWS Norman, OK issued this severe thunderstorm warning at Sep 25, 1996, 7:00 PM CDT for Harper County, Oklahoma. It was in force for 45 min. 2 reports 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
- Sep 25, 1996, 7:00 PM CDT (00:00 UTC)
- Expired
- Sep 25, 1996, 7:45 PM CDT
- In force
- 45 min
- Issued by
- NWS Norman, OK
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
County Harper County, OK
The radar
The Dodge City radar (KDDC), 111 km from the middle of the area, began a volume at 00:04 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 |
|---|---|---|---|
| Sep 25, 7:40 PM CDT | Hail 0.75 | Buffalo, OK | |
| Sep 25, 7:40 PM CDT | Hail 0.88 | Selman, 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
Dodge City, (KDDC), launched 00:00Z, 0.0 hours before the alert went out and 111 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
- 451 J/kg
- Mixed-layer CIN
- -235 J/kg
- Mixed-layer LCL
- 958 m above ground
- 0-6 km bulk shear
- 41 kt
- 0-1 km storm-relative helicity
- 165 m²/s²
- 0-3 km storm-relative helicity
- 258 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.0
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 25, 3:44 PM CDT, 3 hours 16 minutes earlier.
Area forecast discussion, Sep 25, 3:44 PM CDT, 3 hours 16 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE OKLAHOMA CITY OK 340 PM CDT WED SEP 25 1996 WL KEEP DISC BRIEF...ETA/AVN ARE IN DECENT AGREEMENT REGARDING SHORT TERM FEATURES. LATEST SFC ANALYSIS INDICATES SFC LOW ACRS SERN CO...WITH CDFNT ACRS NRN CO AND EXTENDING ENE. CDFNT EXPECTED TO MOVE QUICKLY SE TONIGHT AND EARLY THU...BEFORE SLOWING ACRS CNTRL/SERN ZNS. LOW LVL FORCING ALONG WITH FAVORABLE JET DYNAMICS WARRANT AT LEAST CHC POPS ALONG AND AHEAD OF FNT...WHICH SHOULD FINALLY EXIT AREA LATE FRI. LATEST MRF RUNS HAVE TRENDED TOWARDS MORE PROGRESSIVE SOLUTIONS...EXPECT EXTENDED PDS TO BE GENERALLY DRY...WITH QUICK WARMING TREND. FAN TEMPS APPEAR MORE REASONABLE THAN FWC. FCSTID = 22 OKC 66 72 54 60 / 50 40 50 30 HBR 65 71 47 60 / 50 30 30 20 SPS 67 78 57 65 / 40 50 50 30 GAG 59 60 42 56 / 50 30 30 20 PNC 65 69 49 58 / 60 50 50 30 DUA 69 81 65 70 / 40 60 60 6V0 .OKC... 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 25, 7:49 PM CDT | Severe Thunderstorm Warning | OUN | Ellis, Harper, Woodward | 41 min |
| Sep 25, 9:00 PM CDT | Severe Thunderstorm Warning | OUN | Grant | 60 min |
| Sep 25, 9:32 PM CDT | Flash Flood Warning | OUN | Ellis, Harper, Woodward | 3 hr |
| Sep 25, 9:47 PM CDT | Tornado Warning | OUN | Grant | 28 min |
| Sep 25, 10:15 PM CDT | Tornado Warning | OUN | Grant | 30 min |
| Sep 25, 10:29 PM CDT | Severe Thunderstorm Warning | OUN | Kay | 46 min |
| Sep 25, 10:36 PM CDT | Severe Thunderstorm Warning | OUN | Major, Woods, Woodward | 39 min |
| Sep 25, 10:55 PM CDT | Tornado Warning | OUN | Grant | 20 min |
| Sep 25, 11:11 PM CDT | Severe Thunderstorm Warning | OUN | Major, Woods | 49 min |
| Sep 25, 11:15 PM CDT | Tornado Warning | OUN | Grant, Kay | 30 min |
| Sep 25, 11:22 PM CDT | Severe Thunderstorm Warning | OUN | Kay | 53 min |
| Sep 25, 11:45 PM CDT | Tornado Warning | OUN | Kay | 45 min |
| Sep 25, 11:47 PM CDT | Severe Thunderstorm Warning | OUN | Garfield, Kingfisher | 43 min |
| Sep 25, 11:57 PM CDT | Flash Flood Warning | OUN | Kay | 4 hr |
| Sep 26, 12:14 AM CDT | Severe Thunderstorm Warning | OUN | Alfalfa, Woods | 46 min |
| Sep 26, 1:06 AM CDT | Severe Thunderstorm Warning | OUN | Noble, Payne | 54 min |
| Sep 26, 1:56 AM CDT | Severe Thunderstorm Warning | OUN | Payne | 34 min |
| Sep 26, 2:24 AM CDT | Severe Thunderstorm Warning | OUN | Garfield | 36 min |
| Sep 26, 11:48 AM CDT | Severe Thunderstorm Warning | OUN | Choctaw, Pushmataha | 57 min |
| Sep 26, 11:48 AM CDT | Severe Thunderstorm Warning | OUN | Bryan | 57 min |
| Sep 26, 12:40 PM CDT | Severe Thunderstorm Warning | OUN | Choctaw, Pushmataha | 50 min |
Nearby
Severe Thunderstorm Warnings in Oklahoma, 1996Every severe thunderstorm warning in 1996
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.