Alert archive / Arkansas / Severe Thunderstorm Warnings in 2001
Severe Thunderstorm Warning 327, NWS Little Rock, AR
NWS Little Rock, AR issued this severe thunderstorm warning at Aug 9, 2001, 8:07 PM CDT for Marion County, Arkansas. It was in force for 38 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
- Aug 9, 2001, 8:07 PM CDT (01:07 UTC)
- Expired
- Aug 9, 2001, 8:45 PM CDT
- In force
- 38 min
- Issued by
- NWS Little Rock, AR
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
County Marion County, AR
The radar
The Springfield radar (KSGF), 125 km from the middle of the area, began a volume at 01:08 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 |
|---|---|---|---|
| Aug 9, 8:20 PM CDT | Thunderstorm Wind 50 E | Flippin, AR |
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
Springfield, MO (KSGF), launched 00:00Z, 1.1 hours before the alert went out and 122 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
- 1525 J/kg
- Mixed-layer CIN
- -86 J/kg
- Mixed-layer LCL
- 1738 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- 151 m²/s²
- 0-3 km storm-relative helicity
- 210 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 2.4
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 Little Rock, AR wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 9, 11:00 AM CDT, 9 hours 7 minutes earlier.
Area forecast discussion, Aug 9, 11:00 AM CDT, 9 hours 7 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE LITTLE ROCK AR 1100 AM CDT THU AUG 9 2001 AFTER REVIEW OF 10 AM OBSERVATIONS...RAISED MAXIMUM TEMPERATURES FOR THIS AFTERNOON FOR THE NORTHWESTERN SECTIONS OF THE FORECAST AREA. REST OF PREVIOUS FORECAST ON TRACK. (22) .LIT...NONE.
The office that day
Everything else NWS Little Rock, AR issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 9, 7:49 PM CDT | Flash Flood Warning | LZK | Polk | 56 min |
| Aug 10, 5:05 AM CDT | Flash Flood Warning | LZK | Stone | 115 min |
| Aug 10, 7:00 AM CDT | Flash Flood Warning | LZK | Stone | 2 hr |
| Aug 10, 5:09 PM CDT | Severe Thunderstorm Warning | LZK | Boone, Marion | 36 min |
| Aug 10, 5:19 PM CDT | Severe Thunderstorm Warning | LZK | Yell | 26 min |
| Aug 10, 5:45 PM CDT | Severe Thunderstorm Warning | LZK | Boone | 30 min |
| Aug 10, 6:27 PM CDT | Severe Thunderstorm Warning | LZK | Independence, Jackson | 33 min |
Nearby
Severe Thunderstorm Warnings in Arkansas, 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.