Alert archive / Arkansas / Flash Flood Warnings in 2021
Flash Flood Warning 121, NWS Little Rock, AR
NWS Little Rock, AR issued this flash flood warning at Oct 1, 2021, 12:33 AM CDT for Jefferson County, Lonoke County, Prairie County, Arkansas. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Oct 1, 2021, 12:33 AM CDT (05:33 UTC)
- Expired
- Oct 1, 2021, 3:35 AM CDT
- In force
- 3 hr
- Issued by
- NWS Little Rock, AR
- Area
- Storm-based polygon
- Flood severity
- None
Counties Jefferson County, AR, Lonoke County, AR, Prairie County, AR
The radar
The Little Rock radar (KLZK), 64 km from the middle of the area, began a volume at 05:36 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
Little Rock, AR (KLZK), launched 00:00Z, 5.6 hours before the alert went out and 163 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
- 913 J/kg
- Mixed-layer CIN
- -11 J/kg
- Mixed-layer LCL
- 744 m above ground
- 0-6 km bulk shear
- 19 kt
- 0-1 km storm-relative helicity
- 36 m²/s²
- 0-3 km storm-relative helicity
- 38 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.6
The text
As transmitted.
149
WGUS54 KLZK 010533
FFWLZK
ARC069-085-117-010845-
/O.NEW.KLZK.FF.W.0121.211001T0533Z-211001T0835Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Little Rock AR
1233 AM CDT Fri Oct 1 2021
The National Weather Service in Little Rock has issued a
* Flash Flood Warning for...
Southeastern Lonoke County in central Arkansas...
South Central Prairie County in central Arkansas...
North Central Jefferson County in southeastern Arkansas...
* Until 335 AM CDT.
* At 1233 AM CDT, Doppler radar indicated showers and thunderstorms
producing heavy rain across the warned area. Between 2 and 3
inches of rain have fallen. Given additional heavy rain, flash
flooding is ongoing or expected to begin shortly.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar.
IMPACT...Flash flooding of small creeks and streams, urban
areas, highways, streets and underpasses as well as
other poor drainage and low-lying areas.
* Some locations that will experience flash flooding include...
Humphrey, Humnoke, Brummitt, Stuttgart Municipal Airport, Allport,
Sherrill, Gethsemane and Tucker.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 3464 9160 3459 9153 3457 9155 3457 9159
3452 9160 3448 9163 3448 9171 3442 9171
3439 9181 3432 9194 3445 9196
FLASH FLOOD...RADAR INDICATED
$$
461 follow-up statement
449
WGUS74 KLZK 010558
FFSLZK
Flash Flood Statement
National Weather Service Little Rock AR
1258 AM CDT Fri Oct 1 2021
ARC069-085-117-010845-
/O.CON.KLZK.FF.W.0121.000000T0000Z-211001T0835Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Jefferson AR-Lonoke AR-Prairie AR-
1258 AM CDT Fri Oct 1 2021
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 335 AM CDT EARLY THIS
MORNING FOR SOUTHEASTERN LONOKE, SOUTH CENTRAL PRAIRIE AND NORTH
CENTRAL JEFFERSON COUNTIES...
At 1258 AM CDT, Doppler radar indicated showers and thunderstorms
producing heavy rain across the warned area, especially between
Sherrill and Humnoke. Two to three inches of rain have fallen at
some locations, with locally up to five inches. While rain will
likely taper off during the warning period, it will take some time
for any high water to runoff.
HAZARD...Flash flooding caused by thunderstorms.
SOURCE...Radar.
IMPACT...Flash flooding of small creeks and streams, urban areas,
highways, streets and underpasses as well as other poor
drainage and low-lying areas.
Some locations that will experience flash flooding include...
Humphrey, Humnoke, Brummitt, Stuttgart Municipal Airport, Allport,
Sherrill, Gethsemane and Tucker.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.
&&
LAT...LON 3464 9160 3459 9153 3457 9155 3457 9159
3452 9160 3448 9163 3448 9171 3442 9171
3439 9181 3432 9194 3445 9196
FLASH FLOOD...RADAR INDICATED
$$
46Nearby
Flash Flood Warnings in Arkansas, 2021Every flash flood warning in 2021
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.