Alert archive / Arkansas / Flash Flood Warnings in 1999

Flash Flood Warning 71, NWS Little Rock, AR

June 30, 1999Johnson County, Arkansas

NWS Little Rock, AR issued this flash flood warning at Jun 30, 1999, 10:24 AM CDT for Johnson County, Arkansas. It was in force for 116 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
Jun 30, 1999, 10:24 AM CDT (15:24 UTC)
Expired
Jun 30, 1999, 12:20 PM CDT
In force
116 min
Issued by
NWS Little Rock, AR
Area
Whole counties

County Johnson County, AR

The nearest sounding before it

Springfield, MO (KSGF), launched 12:00Z, 3.4 hours before the alert went out and 151 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.

Skew-T log-pSkew-T log-p diagram, Springfield, MO at 12:00Z on 1999-06-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 126 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Springfield, MO at 12:00Z on 1999-06-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 229 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
126 J/kg
Mixed-layer CIN
-216 J/kg
Mixed-layer LCL
899 m above ground
0-6 km bulk shear
48 kt
0-1 km storm-relative helicity
229 m²/s²
0-3 km storm-relative helicity
255 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.2

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

The office that day

Everything else NWS Little Rock, AR issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 29, 7:16 PM CDTSevere Thunderstorm WarningLZKJackson49 min
Jun 29, 7:24 PM CDTFlash Flood WarningLZKJefferson2 hr
Jun 29, 7:26 PM CDTSevere Thunderstorm WarningLZKBradley, Drew, Lincoln49 min
Jun 29, 7:40 PM CDTSevere Thunderstorm WarningLZKDesha50 min
Jun 29, 7:47 PM CDTSevere Thunderstorm WarningLZKArkansas48 min
Jun 29, 8:10 PM CDTFlash Flood WarningLZKArkansas2 hr
Jun 29, 8:16 PM CDTSevere Thunderstorm WarningLZKMonroe34 min
Jun 30, 5:52 AM CDTSevere Thunderstorm WarningLZKSearcy48 min
Jun 30, 6:01 AM CDTFlash Flood WarningLZKMarion2 hr
Jun 30, 6:51 AM CDTFlash Flood WarningLZKSearcy119 min
Jun 30, 7:15 AM CDTFlash Flood WarningLZKNewton115 min
Jun 30, 7:51 AM CDTSevere Thunderstorm WarningLZKJohnson49 min
Jun 30, 8:20 AM CDTFlash Flood WarningLZKJohnson2 hr
Jun 30, 10:01 AM CDTFlash Flood WarningLZKStone114 min

Nearby

Flash Flood Warnings in Arkansas, 1999Every flash flood warning in 1999

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.