Alert archive / Arkansas / Flash Flood Warnings in 2009
Flash Flood Warning 78, NWS Little Rock, AR
NWS Little Rock, AR issued this flash flood warning at Jul 29, 2009, 2:01 PM CDT for Perry County, Pulaski County, Saline County, Arkansas. It was in force for 2 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Jul 29, 2009, 2:01 PM CDT (19:01 UTC)
- Expired
- Jul 29, 2009, 4:06 PM CDT
- In force
- 2 hr
- Issued by
- NWS Little Rock, AR
- Area
- Storm-based polygon
- Flood severity
- None
Counties Perry County, AR, Pulaski County, AR, Saline County, AR
The radar
The Little Rock radar (KLZK), 35 km from the middle of the area, began a volume at 19:01 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 12:00Z, 7.0 hours before the alert went out and 246 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
- 1802 J/kg
- Mixed-layer CIN
- -20 J/kg
- Mixed-layer LCL
- 661 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- 27 m²/s²
- 0-3 km storm-relative helicity
- 104 m²/s²
- Significant tornado parameter
- 0.3
- Supercell composite
- 1.8
What forecasters said that day
The local office's own words before this flash flood 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 flash flood warning went out at Jul 29, 12:54 PM CDT, 1 hour 7 minutes earlier.
Area forecast discussion, Jul 29, 12:54 PM CDT, 1 hour 7 minutes before
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</html>Hazardous weather outlook, Jul 29, 9:30 AM CDT, 4 hours 31 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE LITTLE ROCK AR 930 AM CDT WED JUL 29 2009 ARZ003>007-012>016-021>025-030>034-037>047-052>057-062>069-301000- ARKANSAS-BAXTER-BOONE-BRADLEY-CALHOUN-CLARK-CLEBURNE-CLEVELAND- CONWAY-DALLAS-DESHA-DREW-FAULKNER-FULTON-GARLAND-GRANT-HOT SPRING- INDEPENDENCE-IZARD-JACKSON-JEFFERSON-JOHNSON-LINCOLN-LOGAN-LONOKE- MARION-MONROE-MONTGOMERY-NEWTON-OUACHITA-PERRY-PIKE-POLK-POPE- PRAIRIE-PULASKI-SALINE-SCOTT-SEARCY-SHARP-STONE-VAN BUREN-WHITE- WOODRUFF-YELL- 930 AM CDT WED JUL 29 2009 THIS HAZARDOUS WEATHER OUTLOOK IS FOR A LARGE PART OF ARKANSAS. .DAY ONE...TODAY AND TONIGHT A STALLED FRONT ACROSS THE REGION AT THIS TIME WILL INTERACT WITH INSTABILITY PRODUCED BY DAYTIME HEATING...WITH SCATTERED SHOWERS AND THUNDERSTORMS DEVELOPING. WHILE WIDESPREAD SEVERE WEATHER IS NOT EXPECTED...ANY STORM COULD PRODUCE LARGE HAIL AND DAMAGING WINDS... ESPECIALLY OVER THE SOUTHERN HALF OF THE STATE. ANOTHER CONCERN WILL BE HEAVY RAINFALL...AS ANY STORM THAT DEVELOPS WILL BE SLOW MOVING. THIS ALSO BRINGS THE POTENTIAL FOR FLASH FLOODING...ESPECIALLY IN POOR DRAINAGE AREAS. A SECOND FRONT WILL ENTER NORTHERN ARKANSAS TONIGHT...BRINGING ANOTHER ROUND OF HEAVY RAINFALL DURING THE OVERNIGHT HOURS. SOME LOCATIONS ACROSS NORTHERN ARKANSAS MAY RECEIVE ONE TO TWO INCHES OF RAINFALL TONIGHT. A FLASH FLOOD WATCH IS IN EFFECT BEGINNING THIS EVENING...AND CONTINUING THROUGH THURSDAY EVENING. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY THE FRONT WILL CONTINUE MOVING ACROSS THE STATE THURSDAY...AND WILL STALL SOMEWHERE OVER THE SOUTHERN PORTION OF THE STATE. HEAVY RAINFALL WILL CONTINUE INTO THE DAYTIME HOURS THURSDAY. AMOUNTS WILL AVERAGE TWO TO THREE INCHES...WITH THE POTENTIAL FOR UP TO FOUR INCHES ACROSS THE SOUTH. FLASH FLOODING WILL REMAIN A CONCERN...AS THE GROUND IS ALREADY SATURATED. RAIN CHANCES WILL REMAIN IN THE FORECAST THROUGH THE WEEKEND INTO THE BEGINNING OF NEXT WEEK...AS FRONTS WILL CONTINUE TO ENTER THE STATE AND THEN STALL. THIS WILL ALLOW FOR SEVERAL DISTURBANCES TO MOVE ALONG THE FRONT...BRINGING MANY ROUNDS OF RAINFALL. HEAVY RAINFALL AND FLOODING WILL REMAIN A CONCERN...AS THE GROUND WILL ALREADY BE SATURATED. THE RAINFALL FORECAST IS DEPENDENT ON WHERE THE FRONTS STALL...AND WILL BE REFINED IN THE COMING DAYS. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED. && VISIT NWS LITTLE ROCK ON THE WEB. GO TO HTTP://WEATHER.GOV AND CLICK ON CENTRAL ARKANSAS. 58/56
The office that day
Everything else NWS Little Rock, AR issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 28, 8:45 PM CDT | Severe Thunderstorm Warning | LZK | Baxter, Marion | 45 min |
| Jul 29, 4:48 AM CDT | Flash Flood Watch | LZK | Arkansas, Baxter, Bradley, Calhoun, Clark, Cleburne and 28 more | 38 hr |
Nearby
Flash Flood Warnings in Arkansas, 2009Every flash flood warning in 2009
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.