Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2001
Severe Thunderstorm Warning 480, NWS Norman, OK
NWS Norman, OK issued this severe thunderstorm warning at Jun 30, 2001, 3:14 AM CDT for Lincoln County, Pottawatomie County, Oklahoma. It was in force for 46 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
- Jun 30, 2001, 3:14 AM CDT (08:14 UTC)
- Expired
- Jun 30, 2001, 4:00 AM CDT
- In force
- 46 min
- Issued by
- NWS Norman, OK
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
Counties Lincoln County, OK, Pottawatomie County, OK
The radar
The Norman radar (KTLX), 36 km from the middle of the area, began a volume at 08:13 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 |
|---|---|---|---|
| Jun 30, 3:20 AM CDT | Thunderstorm Wind 52 E | Shawnee, 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jun 30, 1:00 AM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Norman, OK (KOUN), launched 00:00Z, 8.2 hours before the alert went out and 51 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
- 1853 J/kg
- Mixed-layer CIN
- -79 J/kg
- Mixed-layer LCL
- 1446 m above ground
- 0-6 km bulk shear
- 43 kt
- 0-1 km storm-relative helicity
- 65 m²/s²
- 0-3 km storm-relative helicity
- 227 m²/s²
- Significant tornado parameter
- 0.6
- Supercell composite
- 7.9
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 Jun 29, 9:45 PM CDT, 5 hours 29 minutes earlier.
Area forecast discussion, Jun 29, 9:45 PM CDT, 5 hours 29 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE NORMAN OK 945 PM CDT FRI JUN 29 2001 00Z UA DATA SHOWS GOOD H8 WAA PATTERN ACRS SRN HALF OF THE FA. RUC AND MESOETA SHOW WAA PATTERN CONTINUING OVERNIGHT...MAINLY ERN HALF OF THE FA. PLENTY OF MOISTR ARND AND WITH WAA CONTG WILL CONT WITH MAINLY CHC CAT POPS CNTRL AND E TONIGHT. WILL INCREASE CLDS AND TWEAK A FEW MINS WITH HI DEWPOINTS AND INCRSG CLDS HOLDING UP TMPS. 02 .OUN... OK...NONE. TX...NONE.
In the hours before
Local storm report, Jun 30, 1:04 AM CDT, 2 hours 10 minutes before
LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
104 AM CDT SAT JUN 30 2001
TIME (CDT) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0100 AM PRAGUE OK 1.00 INCH HAIL
06/30/01 LINCOLN POLICE DEPT REPORT
JLocal storm report, Jun 30, 1:20 AM CDT, 1 hour 54 minutes before
LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
120 AM CDT SAT JUN 30 2001
TIME (CDT) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0105 AM PR!AGUE OK 1.75 INCH HAIL
06/30/01 LINCOLN EMERGENCY MANAGER
REPORT
JLocal storm report, Jun 30, 2:04 AM CDT, 1 hour 10 minutes before
LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
204 AM CDT SAT JUN 30 2001
TIME (CDT) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0156 AM STROUD OK 1.00 INCH HAIL
06/30/01 LINCOLN AMATURE RADIO REPORT
0200 AM STILLWATER OK .75 INCH HAIL
06/30/01 PAYNE AMATURE RADIO REPORT
JLocal storm report, Jun 30, 3:00 AM CDT, 14 minutes before
LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORMAN OK
300 AM CDT SAT JUN 30 2001
TIME (CDT) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0250 AM 3 W DAISY OK WIND DAMAGE
06/30/01 ATOKA SHERIFF OFFICE REPORTS
LARGE TREE BLOWN ONTO
MOBILE HOME AND POWER LINES
DOWN.
JThe office that day
Everything else NWS Norman, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 30, 12:45 AM CDT | Severe Thunderstorm Warning | OUN | Seminole | 45 min |
| Jun 30, 12:53 AM CDT | Severe Thunderstorm Warning | OUN | Lincoln | 37 min |
| Jun 30, 1:23 AM CDT | Severe Thunderstorm Warning | OUN | Payne | 52 min |
| Jun 30, 1:27 AM CDT | Severe Thunderstorm Warning | OUN | Pottawatomie, Seminole | 48 min |
| Jun 30, 1:55 AM CDT | Severe Thunderstorm Warning | OUN | Lincoln | 50 min |
| Jun 30, 2:13 AM CDT | Severe Thunderstorm Warning | OUN | Pottawatomie, Seminole | 62 min |
| Jun 30, 2:18 AM CDT | Severe Thunderstorm Warning | OUN | Garfield | 57 min |
| Jun 30, 2:38 AM CDT | Severe Thunderstorm Warning | OUN | Lincoln | 37 min |
| Jun 30, 2:40 AM CDT | Severe Thunderstorm Warning | OUN | Atoka | 50 min |
| Jun 30, 2:43 AM CDT | Flash Flood Warning | OUN | Pottawatomie, Seminole | 4 hr |
| Jun 30, 3:58 AM CDT | Severe Thunderstorm Warning | OUN | Garvin, McClain, Pottawatomie | 47 min |
| Jun 30, 4:43 AM CDT | Severe Thunderstorm Warning | OUN | Garvin, Murray | 47 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.