Alert archive / Arkansas / Severe Thunderstorm Warnings in 2001
Severe Thunderstorm Warning 375, NWS Little Rock, AR
NWS Little Rock, AR issued this severe thunderstorm warning at Sep 8, 2001, 7:40 PM CDT for Boone County, Arkansas. It was in force for 40 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 8, 2001, 7:40 PM CDT (00:40 UTC)
- Expired
- Sep 8, 2001, 8:20 PM CDT
- In force
- 40 min
- Issued by
- NWS Little Rock, AR
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
County Boone County, AR
The radar
The Springfield radar (KSGF), 107 km from the middle of the area, began a volume at 00:40 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.
The nearest sounding before it
Springfield, MO (KSGF), launched 00:00Z, 0.7 hours before the alert went out and 91 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
- 471 J/kg
- Mixed-layer CIN
- -12 J/kg
- Mixed-layer LCL
- 550 m above ground
- 0-6 km bulk shear
- 42 kt
- 0-1 km storm-relative helicity
- 70 m²/s²
- 0-3 km storm-relative helicity
- 84 m²/s²
- Significant tornado parameter
- 0.3
- Supercell composite
- 2.6
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 Sep 8, 4:00 PM CDT, 3 hours 40 minutes earlier.
Area forecast discussion, Sep 8, 4:00 PM CDT, 3 hours 40 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE LITTLE ROCK AR 400 PM CDT SAT SEP 8 2001 SCATTERED SHOWERS AND A FEW THUNDERSHOWERS HAVE DEVELOPED ACROSS THE CWA THIS AFTERNOON AS AIR MASS HAS SLOWLY RECOVERED FROM THIS MORNINGS SQUALL LINE. EXPECT THIS TO CONTINUE THROUGH THE AFTERNOON. THUNDERSTORMS DEVELOPING ALONG THE COLD FRONT IN SOUTHEASTERN OKLAHOMA WILL LIKELY SPREAD INTO NORTHWESTERN SECTIONS BY EVENING AND INCREASE ACROSS MOSTLY THE NORTHERN PART OF THE CWA TONIGHT. COLD FRONT MAY EDGE INTO NORTHWESTERN COUNTIES LATER TONIGHT. STILL SEE A HEAVY RAIN EVENT SHAPING UP MAINLY IN THE NORTHWEST, WITH RAIN AMOUNTS AND CHANCES OF RAIN DECREASING TO THE SOUTHEAST. WILL HAVE CATEGORICAL POPS IN THE NORTH WITH MENTION OF HEAVY RAIN, DECREASING TO A CHANCE OF THUNDERSTORMS IN THE SOUTHEAST WITH LIGHTER RAIN AMOUNTS. WILL GO BELOW MOS ON MINS IN THE NORTH AFTER SEEING WHAT THUNDERSTORMS LAST NIGHT DID WITH TEMPS. MOS MINS LOOK CLOSER TO THE SOUTH. THINK CLOUDS AND RAIN WILL CONTINUE INTO SUNDAY MORNING IN NORTHERN AND CENTRAL SECTIONS, ENDING BY OR DURING THE AFTERNOON AS THE COLD FRONT PASSES. WILL GO WITH LIKELY POPS IN THE SOUTH SUNDAY FOR THE FRONT MOVING THROUGH. TEMPS SHOULD NOT RISE MUCH AND MAY GO A LITTLE BELOW MOS ON MAXES. CLOUDS SHOULD DECREASE IN THE WEST LATE IN THE DAY AND ELSEWHERE SUNDAY NIGHT. MOISTURE LINGERS IN THE SOUTHEAST, AND WILL DELAY CLEARING IN THAT AREA AND KEEP A CHANCE OF RAIN GOING INTO SUNDAY NIGHT THERE AS WELL. DRIER AIR TAKING OVER SHOULD RESULT IN LOWER MINS SUNDAY NIGHT. MONDAY SHOULD BE MOSTLY SUNNY AFTER THE UPPER TROF MOVES PAST AND HIGH PRESSURE SETS IN. THIS SHOULD CONTINUE THROUGH AT LEAST WEDNESDAY. MOS MAXES FOR MONDAY LOOK GOOD AT THIS TIME. .LIT...NONE
The office that day
Everything else NWS Little Rock, AR issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 8, 7:12 PM CDT | Severe Thunderstorm Warning | LZK | Johnson, Newton | 53 min |
| Sep 8, 7:22 PM CDT | Severe Thunderstorm Warning | LZK | Marion | 43 min |
| Sep 8, 7:31 PM CDT | Severe Thunderstorm Warning | LZK | Polk | 49 min |
| Sep 8, 7:45 PM CDT | Severe Thunderstorm Warning | LZK | Scott | 45 min |
| Sep 8, 7:51 PM CDT | Severe Thunderstorm Warning | LZK | Baxter | 54 min |
| Sep 8, 8:03 PM CDT | Severe Thunderstorm Warning | LZK | Marion, Searcy | 57 min |
| Sep 8, 8:05 PM CDT | Severe Thunderstorm Warning | LZK | Newton | 45 min |
| Sep 8, 8:17 PM CDT | Severe Thunderstorm Warning | LZK | Logan | 48 min |
| Sep 8, 8:38 PM CDT | Severe Thunderstorm Warning | LZK | Montgomery, Polk | 52 min |
| Sep 8, 8:54 PM CDT | Severe Thunderstorm Warning | LZK | Fulton | 36 min |
| Sep 8, 9:36 PM CDT | Flash Flood Warning | LZK | Newton | 114 min |
| Sep 8, 9:43 PM CDT | Severe Thunderstorm Warning | LZK | Pope | 32 min |
| Sep 8, 10:07 PM CDT | Severe Thunderstorm Warning | LZK | Polk | 28 min |
| Sep 8, 10:50 PM CDT | Flash Flood Warning | LZK | Montgomery, Polk | 115 min |
| Sep 9, 1:34 AM CDT | Severe Thunderstorm Warning | LZK | Montgomery, Pike | 41 min |
| Sep 9, 1:34 AM CDT | Severe Thunderstorm Warning | LZK | Yell | 41 min |
| Sep 9, 2:09 AM CDT | Severe Thunderstorm Warning | LZK | Clark, Garland, Hot Spring | 51 min |
| Sep 9, 3:14 AM CDT | Severe Thunderstorm Warning | LZK | Pulaski, Saline | 46 min |
| Sep 9, 3:59 AM CDT | Severe Thunderstorm Warning | LZK | Faulkner, Pulaski | 46 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.