Alert archive / Arkansas / Severe Thunderstorm Warnings in 2001
Severe Thunderstorm Warning 280, NWS Little Rock, AR
NWS Little Rock, AR issued this severe thunderstorm warning at Jul 11, 2001, 7:19 PM CDT for Polk County, Arkansas. It was in force for 36 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
- Jul 11, 2001, 7:19 PM CDT (00:19 UTC)
- Expired
- Jul 11, 2001, 7:55 PM CDT
- In force
- 36 min
- Issued by
- NWS Little Rock, AR
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
County Polk County, AR
The radar
The Western Arkansas radar (KSRX), 90 km from the middle of the area, began a volume at 00:19 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 |
|---|---|---|---|
| Jul 11, 7:40 PM CDT | Hail 0.88 | Mountain Fork, 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
Shreveport, LA (KSHV), launched 00:00Z, 0.3 hours before the alert went out and 227 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
- 1237 J/kg
- Mixed-layer CIN
- -43 J/kg
- Mixed-layer LCL
- 1705 m above ground
- 0-6 km bulk shear
- 24 kt
- 0-1 km storm-relative helicity
- 17 m²/s²
- 0-3 km storm-relative helicity
- 50 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 Little Rock, AR wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 11, 3:41 PM CDT, 3 hours 38 minutes earlier.
Area forecast discussion, Jul 11, 3:41 PM CDT, 3 hours 38 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE LITTLE ROCK AR
341 PM CDT WED JUL 11 2001
HOT TEMPERATURES CONTINUE ACROSS CENTRAL AND SOUTHERN ARKANSAS. HEAT
INDICES ARE WIDESPREAD IN THE 105 TO 110 DEGREE RANGE. GOING WITH
THE ETA SOLUTION TODAY AS IT IS DRIER THAN AVN AND SIMILAR TO NGM.
WILL ISSUE HEAT ADVISORY FOR CENTRAL AND SOUTHERN SECTIONS AS THE
HEAT SHOULD CONTINUE AT LEAST ONE MORE DAY.
HIGH PRESSURE WILL SLOWLY MOVE WEST BUT WILL ALSO INTENSIFY. THIS
WILL KEEP RAIN CHANCES FOCUSED MAINLY IN THE EASTERN SECTIONS OF THE
CWFA. MOISTURE INCREASES TONIGHT...AND WITH A FEW THUNDERSHOWERS IN
OUR SOUTHERN ZONES...WILL ONLY LEAVE A SLIGHT CHANCE OF
THUNDERSHOWERS IN THE SOUTH. MOISTURE INCREASES EVEN MORE SO ON
THURSDAY AND THURSDAY NIGHT. BEST CHANCE OF THUNDERSTORMS WILL BE
THURSDAY NIGHT AND INTO FRIDAY MORNING.
A COLD FRONT WILL MOVE THROUGH THE STATE ON FRIDAY. WITH SLIGHTLY
COOLER/DRIER AIR BEHIND THE FRONT NO RAIN WILL BE MENTIONED IN MOST
AREAS THIS WEEKEND THROUGH THE FIRST PART OF NEXT WEEK.
TEMPERATURES WILL BE CLOSE TO NGM MOS.
.LIT...HEAT ADVISORY CENTRAL AND SOUTH ARKANSAS TODAY...
ARZONES 16-21>25-30>34-37>47-52>57-62>69The office that day
Everything else NWS Little Rock, AR issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 12, 1:12 PM CDT | Severe Thunderstorm Warning | LZK | Lincoln | 48 min |
| Jul 12, 2:14 PM CDT | Severe Thunderstorm Warning | LZK | Desha, Drew | 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.