Alert archive / Arkansas / Flash Flood Warnings in 2012
Flash Flood Warning 21, NWS Little Rock, AR
NWS Little Rock, AR issued this flash flood warning at Aug 16, 2012, 7:18 PM CDT for Johnson County, Newton County, Pope 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
- Aug 16, 2012, 7:18 PM CDT (00:18 UTC)
- Expired
- Aug 16, 2012, 10:30 PM CDT
- In force
- 3 hr
- Issued by
- NWS Little Rock, AR
- Area
- Storm-based polygon
- Flood severity
- None
Counties Johnson County, AR, Newton County, AR, Pope County, AR
The nearest sounding before it
Springfield, MO (KSGF), launched 00:00Z, 0.3 hours before the alert went out and 135 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
- 286 J/kg
- Mixed-layer CIN
- -168 J/kg
- Mixed-layer LCL
- 1248 m above ground
- 0-6 km bulk shear
- 44 kt
- 0-1 km storm-relative helicity
- 46 m²/s²
- 0-3 km storm-relative helicity
- 66 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
The text
As transmitted, in the capitals the NWS used until 2016.
902
WGUS54 KLZK 170018
FFWLZK
ARC071-101-115-170330-
/O.NEW.KLZK.FF.W.0021.120817T0018Z-120817T0330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE LITTLE ROCK AR
718 PM CDT THU AUG 16 2012
THE NATIONAL WEATHER SERVICE IN LITTLE ROCK HAS ISSUED A
* FLASH FLOOD WARNING FOR...
JOHNSON COUNTY IN WESTERN ARKANSAS...
NORTHWESTERN POPE COUNTY IN CENTRAL ARKANSAS...
SOUTHWESTERN NEWTON COUNTY IN NORTH CENTRAL ARKANSAS...
* UNTIL 1030 PM CDT
* AT 718 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED AN
AREA OF THUNDERSTORMS WITH VERY HEAVY RAINFALL ALONG A LINE
EXTENDING FROM 7 MILES WEST OF DEVILS KNOB TO 6 MILES SOUTH OF
DEVILS KNOB TO 4 MILES NORTH OF HOLMAN. DOPPLER RADAR INDICATES 1
TO 3 INCHES OF RAIN HAVE FALLEN OVER PARTS OF THE WARNED AREA IN
THE PAST 2 HOURS WITH ADDITIONAL HEAVY RAIN EXPECTED. FLASH
FLOODING IS LIKELY TO OCCUR. WHILE PRECIPITATION MAY TAPER OFF IN
SOME AREAS DURING THE WARNING PERIOD...IT WILL TAKE SOME TIME FOR
ANY HIGH WATER TO RUNOFF.
* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
WOODLAND... WALNUT... ROSETTA...
PINEY BAY REC AREA... MINERAL SPGS REC AREA...
LUDWIG LAKE... LAMAR... HOLMAN...
DILLEN... DEVILS KNOB... YALE...
SALUS... OZONE... OARK...
LUTHERVILLE... HILLCREST... HARMONY...
FRILEY...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
DO NOT UNDERESTIMATE THE POWER OF FLOOD WATERS. ONLY A FEW INCHES OF
RAPIDLY FLOWING WATER CAN QUICKLY CARRY AWAY YOUR VEHICLE. TURN
AROUND... DONT DROWN!
&&
LAT...LON 3572 9315 3554 9316 3536 9328 3562 9371
3577 9370 3577 9369 3577 9353 3588 9353
3589 9351 3591 9351
$$
621 follow-up statement
221
WGUS74 KLZK 170136
FFSLZK
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE LITTLE ROCK AR
836 PM CDT THU AUG 16 2012
ARC071-101-115-170330-
/O.CON.KLZK.FF.W.0021.000000T0000Z-120817T0330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
JOHNSON AR-NEWTON AR-POPE AR-
836 PM CDT THU AUG 16 2012
...FLASH FLOOD WARNING REMAINS IN EFFECT FOR NORTHWESTERN POPE...
SOUTHWESTERN NEWTON AND JOHNSON COUNTIES UNTIL 1030 PM CDT...
* AT 836 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED AN
AREA OF HEAVY RAINFALL ALONG A LINE EXTENDING FROM 20 MILES
SOUTHWEST OF LOST VALLEY SP TO 14 MILES NORTH OF CLARKSVILLE TO 13
MILES NORTHEAST OF CLARKSVILLE. DOPPLER RADAR ESTIMATES 2 TO AS
MUCH AS 4 INCHES OF RAIN HAVE ALREADY FALLEN OVER PARTS OF THE
WARNED AREA IN THE PAST 3 HOURS WITH ADDITIONAL HEAVY RAIN
EXPECTED. FLASH FLOODING IS LIKELY TO OCCUR. WHILE PRECIPITATION
MAY TAPER OFF IN SOME AREAS DURING THE WARNING PERIOD...IT WILL
TAKE SOME TIME FOR ANY HIGH WATER TO RUNOFF.
* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
WOODLAND... WALNUT... ROSETTA...
PINEY BAY REC AREA... MINERAL SPGS REC AREA...
LUDWIG LAKE... LAMAR... HOLMAN...
DILLEN... DEVILS KNOB... BERTHA...
YALE... SALUS... OZONE...
OARK... LUTHERVILLE... HILLCREST...
HARMONY...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING. IF FLOODING IS OBSERVED...ACT QUICKLY. DO NOT
ENTER THE WATER. TURN AROUND AND MOVE UP TO HIGHER GROUND. DO NOT
STAY IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING.
DO NOT UNDERESTIMATE THE POWER OF FLOOD WATERS. ONLY A FEW INCHES OF
RAPIDLY FLOWING WATER CAN QUICKLY CARRY AWAY YOUR VEHICLE.
&&
LAT...LON 3572 9315 3554 9316 3536 9328 3562 9371
3577 9370 3577 9369 3577 9353 3588 9353
3589 9351 3591 9351
$$
62The office that day
Everything else NWS Little Rock, AR issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 16, 7:03 PM CDT | Special Weather Statement | LZK | Johnson | 32 min |
| Aug 16, 7:55 PM CDT | Special Weather Statement | LZK | Perry | 45 min |
| Aug 16, 8:53 PM CDT | Flash Flood Warning | LZK | Boone, Marion, Newton, Searcy | 3 hr |
| Aug 16, 11:10 PM CDT | Special Weather Statement | LZK | Conway | 30 min |
| Aug 17, 4:46 PM CDT | Special Weather Statement | LZK | Polk | 29 min |
| Aug 17, 5:22 PM CDT | Special Weather Statement | LZK | Clark | 43 min |
| Aug 17, 5:25 PM CDT | Special Weather Statement | LZK | Polk | 30 min |
| Aug 17, 5:55 PM CDT | Special Weather Statement | LZK | Clark | 30 min |
| Aug 17, 6:05 PM CDT | Severe Thunderstorm Warning | LZK | Clark | 25 min |
| Aug 17, 6:15 PM CDT | Special Weather Statement | LZK | Clark | 30 min |
| Aug 17, 6:29 PM CDT | Severe Thunderstorm Warning | LZK | Clark | 31 min |
| Aug 17, 6:52 PM CDT | Special Weather Statement | LZK | Dallas | 28 min |
Nearby
Flash Flood Warnings in Arkansas, 2012Every flash flood warning in 2012
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.