Alert archive / Arkansas / Flash Flood Watches in 2021

Flash Flood Watch 1, NWS Little Rock, AR

March 27, 202115 counties in Arkansas

NWS Little Rock, AR issued this flash flood watch at Mar 27, 2021, 3:00 AM CDT for 15 counties in Arkansas. It took effect at Mar 27, 2021, 1:00 PM CDT. It was in force for 14 hr.

The area

The counties it named.

The facts

Issued: Mar 27, 2021, 3:00 AM CDT (08:00 UTC)
In effect from: Mar 27, 2021, 1:00 PM CDT
Expired: Mar 28, 2021, 2:58 AM CDT
In force: 14 hr
Issued by: NWS Little Rock, AR
Flood severity: None

Counties Arkansas County, AR, Bradley County, AR, Calhoun County, AR, Cleveland County, AR, Dallas County, AR, Desha County, AR, Drew County, AR, Grant County, AR, Jefferson County, AR, Lincoln County, AR, Lonoke County, AR, Monroe County, AR, Ouachita County, AR, Prairie County, AR, Woodruff County, AR

The radar

The Little Rock radar (KLZK), 83 km from the middle of the area, began a volume at 08:03 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, 8.0 hours before the alert went out and 195 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1500 m above ground
0-6 km bulk shear: 69 kt
0-1 km storm-relative helicity: 117 m²/s²
0-3 km storm-relative helicity: 264 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this flash flood watch 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 watch went out at Mar 27, 12:41 AM CDT, 2 hours 19 minutes earlier.

Area forecast discussion, Mar 27, 12:41 AM CDT, 2 hours 19 minutes before

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Hazardous weather outlook, Mar 26, 3:33 PM CDT, 11 hours 27 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 27, 4:06 PM CDT	Severe Thunderstorm Warning	LZK	Clark, Ouachita	39 min
Mar 27, 4:37 PM CDT	Severe Thunderstorm Warning	LZK	Clark, Dallas, Ouachita	38 min
Mar 27, 5:01 PM CDT	Special Weather Statement	LZK	Lonoke	44 min
Mar 27, 5:08 PM CDT	Severe Thunderstorm Warning	LZK	Lonoke, Prairie, Pulaski	37 min
Mar 27, 5:11 PM CDT	Severe Thunderstorm Warning	LZK	Cleveland, Dallas, Grant, Hot Spring, Jefferson, Saline	49 min
Mar 27, 5:15 PM CDT	Special Weather Statement	LZK	Woodruff	30 min
Mar 27, 5:20 PM CDT	Special Weather Statement	LZK	Dallas	40 min
Mar 27, 5:21 PM CDT	Severe Thunderstorm Warning	LZK	Woodruff	24 min
Mar 27, 5:25 PM CDT	Special Weather Statement	LZK	Prairie	50 min
Mar 27, 5:27 PM CDT	Severe Thunderstorm Warning	LZK	Lonoke, Prairie	48 min
Mar 27, 5:30 PM CDT	Severe Thunderstorm Warning	LZK	Monroe, Prairie, Woodruff	45 min
Mar 27, 5:37 PM CDT	Severe Thunderstorm Warning	LZK	Grant, Lonoke, Pulaski, Saline	53 min
Mar 27, 5:42 PM CDT	Special Weather Statement	LZK	Marion	48 min
Mar 27, 5:53 PM CDT	Special Weather Statement	LZK	Clark	52 min
Mar 27, 5:53 PM CDT	Special Weather Statement	LZK	Grant	37 min
Mar 27, 5:56 PM CDT	Flash Flood Warning	LZK	Lonoke, Monroe, Prairie, Woodruff	3 hr
Mar 27, 5:57 PM CDT	Severe Thunderstorm Warning	LZK	Jackson, Lonoke, Prairie, White, Woodruff	48 min
Mar 27, 6:00 PM CDT	Special Weather Statement	LZK	Woodruff	45 min
Mar 27, 6:02 PM CDT	Severe Thunderstorm Warning	LZK	Arkansas, Jefferson, Lonoke, Monroe, Prairie	43 min
Mar 27, 6:04 PM CDT	Severe Thunderstorm Warning	LZK	Clark, Pike	41 min
Mar 27, 6:09 PM CDT	Severe Thunderstorm Warning	LZK	Monroe, Prairie, Woodruff	51 min
Mar 27, 6:12 PM CDT	Severe Thunderstorm Warning	LZK	Lonoke, Prairie, Pulaski, White	48 min
Mar 27, 6:24 PM CDT	Severe Thunderstorm Warning	LZK	Clark, Dallas, Hot Spring, Ouachita	51 min
Mar 27, 6:37 PM CDT	Severe Thunderstorm Warning	LZK	Arkansas, Jefferson, Lonoke, Monroe, Prairie	38 min
Mar 27, 6:42 PM CDT	Severe Thunderstorm Warning	LZK	Monroe, Woodruff	37 min
Mar 27, 6:48 PM CDT	Tornado Warning	LZK	Arkansas, Monroe, Prairie	42 min
Mar 27, 6:50 PM CDT	Severe Thunderstorm Warning	LZK	White	40 min
Mar 27, 6:58 PM CDT	Severe Thunderstorm Warning	LZK	Cleveland, Dallas, Grant, Jefferson	47 min

Nearby

Flash Flood Watches in Arkansas, 2021 Every flash flood watch 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.