Alert archive / Arkansas / Special Weather Statements in 2021

Special Weather Statement, NWS Little Rock, AR

March 30, 2021Desha County, Arkansas

NWS Little Rock, AR issued this special weather statement at Mar 30, 2021, 8:53 PM CDT for Desha County, Arkansas. It was in force for 22 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Mar 30, 2021, 8:53 PM CDT (01:53 UTC)
Expired: Mar 30, 2021, 9:15 PM CDT
In force: 22 min
Issued by: NWS Little Rock, AR

County Desha County, AR

The radar

The Little Rock radar (KLZK), 153 km from the middle of the area, began a volume at 01:54 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, 1.9 hours before the alert went out and 154 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: 4 J/kg
Mixed-layer CIN: -65 J/kg
Mixed-layer LCL: 571 m above ground
0-6 km bulk shear: 41 kt
0-1 km storm-relative helicity: 269 m²/s²
0-3 km storm-relative helicity: 279 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at Mar 30, 6:23 PM CDT, 2 hours 30 minutes earlier.

Area forecast discussion, Mar 30, 6:23 PM CDT, 2 hours 30 minutes before

Area Forecast Discussion
National Weather Service Little Rock AR
623 PM CDT Tue Mar 30 2021

.UPDATE...

Updated to include the 00Z aviation discussion.

.AVIATION...
Rain showers will continue to increase through this
evening into tonight. TSRA is possible at central and south
terminals. A cold front will approach the state Wednesday
afternoon clearing terminals from NW to SE. MVFR/IFR conditions
are expected through tonight, however, LIFR conditions are
possible where TSRA sets up. Post frontal passage, VFR conditions
are expected as CIGs lift and VIS improves.

&&

.PREV DISCUSSION...(ISSUED 249 PM CDT Tue Mar 30 2021)
SHORT TERM...Tonight Through Thursday
An upper ridge continues to move east and is along the east coast
with a large upper trough over the Plains. This trough will slide to
the east Wednesday and Thursday. The upper trough axis will move to
the Appalachians Thursday.

A warm front in south Arkansas will continue to lift north this
afternoon and evening as a cold front approaches from the northwest.
Ahead of the cold front, showers and thunderstorms will develop.
Rain chances will increase overnight and taper off on Wednesday.
A few storms could become severe this evening with large hail and
damaging winds the main threats. Flash flooding could be a
concern in the south and southeast with a saturated ground and one
to one and a quarter inches of rain expected. Thursday will be dry
as surface high pressure increases over the area.

The Freeze Watch will continue for Thursday morning. Lows tonight
will be in the upper 30s to upper 40s and then in the lower to mid
30s Wednesday night. Highs will be in the 50s Wednesday and in the
mid 50s to mid 60s Thursday.

LONG TERM...Thursday Night Through Tuesday
Settled wx will prevail through the majority of the extended term.
Broad sfc high pressure will remain in place over the Cntrl MS river
valley through the early portion of the PD w/ AR on the S/Wrn
periphery of anticyclonic flow. Fri morning, another freeze will be
possible over the N/Ern quarter of the state, w/ a majority of the
hazard area flirting with the freezing mark and some readings just a
few degrees below the freezing mark further N/E.

As the sfc high pressure begins to shift E/wrd slowly, upper flow
will become somewhat stagnant w/ weakening hgt field gradients and
quasi-zonal mean flow. W/ no upper-lvl support, the sfc high will
stall out over the Appalachians and position a regime of Srly winds
over the FA, and promote a warming trend towards seasonable
temperatures, and overnight low temps becoming more regulated. Due
to the stalled high, a strong sfc pres grad will be noted over the
Cntrl and Srn Plains, which could result in some strong to gusty
gradient winds spilling over into the FA by this weekend and into
next week. Otherwise, no sig or hazardous wx is anticipated.

&&

.LZK Watches/Warnings/Advisories...
Freeze Watch from late Wednesday night through Thursday morning
FOR Baxter-Boone-Fulton-Izard-Lawrence-Marion-Newton-Randolph-
Searcy-Sharp-Stone.

&&

Aviation...CONDRY

Hazardous weather outlook, Mar 30, 3:28 AM CDT, 17 hours 25 minutes before

Hazardous Weather Outlook
National Weather Service Little Rock AR
328 AM CDT Tue Mar 30 2021

ARZ003>008-012>017-021>025-030>034-037>047-052>057-062>069-311000-
Boone-Marion-Baxter-Fulton-Sharp-Randolph-Newton-Searcy-Stone-
Izard-Independence-Lawrence-Johnson-Pope-Van Buren-Cleburne-
Jackson-Logan-Conway-Faulkner-White-Woodruff-Scott-Yell-Perry-
Polk-Montgomery-Garland-Saline-Pulaski-Lonoke-Prairie-Monroe-Pike-
Clark-Hot Spring-Grant-Jefferson-Arkansas-Dallas-Cleveland-
Lincoln-Desha-Ouachita-Calhoun-Bradley-Drew-
328 AM CDT Tue Mar 30 2021

This Hazardous Weather Outlook is for a Large Part of Arkansas.

.DAY ONE...Today and Tonight

A cold front will approach the state from the northwest late this
evening, bringing the potential for scattered thunderstorms with
it. The front will cross the state tonight and some of the storms
could be strong with large hail and gusty winds possible. However,
widespread severe weather is not anticipated at this time.

.DAYS TWO THROUGH SEVEN...Wednesday Through Monday

Following the cold front, strong and gusty northerly winds of 15-20
mph with gusts in excess of 25 mph will possible through Wednesday
evening. Caution is advised on area lakes.

Later in the week, below average morning temperatures are expected.
There is a possibility of sub freezing temperatures in the north
Thursday morning, and in northern/eastern/central sections of the
state Friday morning. Temperatures are expected to drop into the
upper 20s to lower 30s across these areas with widespread lows in
the 30s elsewhere.

.Spotter Information Statement...

Spotter activation is not anticipated.

&&

Visit NWS Little Rock on the web. Go to http://weather.gov/lzk.

230/Goudsward

In the hours before

Special weather statement, Mar 30, 8:53 PM CDT, 0 minutes before

Special Weather Statement
National Weather Service Little Rock AR
853 PM CDT Tue Mar 30 2021

ARZ065-310215-
Desha AR-
853 PM CDT Tue Mar 30 2021

...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL DESHA COUNTY UNTIL 915 PM
CDT...

At 853 PM CDT, Doppler radar was tracking strong thunderstorms along
a line extending from near Yancopin to 6 miles west of Rosedale to
near Kelso to McGehee. Movement was east at 35 mph.

Half inch hail and wind gusts up to 50 mph will be possible with
these storms.

Locations impacted include...
Rohwer...                         Arkansas City...
Watson...                         Lucca Landing...
Yancopin...                       McGehee...
Kelso...                          Masonville...
McArthur...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

These storms may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

&&

LAT...LON 3396 9097 3397 9109 3393 9101 3385 9107
      3378 9099 3378 9113 3373 9115 3367 9103
      3370 9121 3369 9122 3362 9113 3361 9113
      3356 9145 3357 9145 3398 9122 3396 9121
      3394 9115 3400 9116 3410 9088 3409 9087
TIME...MOT...LOC 0153Z 256DEG 29KT 3392 9115 3387 9114 3379 9121 3361
9140

62

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 30, 11:21 PM CDT	Special Weather Statement	LZK	Clark	39 min
Mar 30, 11:55 PM CDT	Severe Thunderstorm Warning	LZK	Clark, Dallas, Grant, Hot Spring	35 min
Mar 31, 12:25 AM CDT	Severe Thunderstorm Warning	LZK	Cleveland, Dallas, Grant, Hot Spring, Jefferson	50 min
Mar 31, 1:08 AM CDT	Severe Thunderstorm Warning	LZK	Cleveland, Grant, Jefferson, Lincoln	28 min
Mar 31, 1:41 AM CDT	Special Weather Statement	LZK	Ouachita	49 min
Mar 31, 2:21 AM CDT	Special Weather Statement	LZK	Desha	24 min
Mar 31, 2:59 AM CDT	Special Weather Statement	LZK	Drew	46 min
Mar 31, 3:14 AM CDT	Severe Thunderstorm Warning	LZK	Bradley, Cleveland, Desha, Drew	46 min
Mar 31, 3:41 AM CDT	Severe Thunderstorm Warning	LZK	Desha, Drew, Lincoln	34 min
Mar 31, 4:02 AM CDT	Special Weather Statement	LZK	Drew	13 min
Mar 31, 4:17 AM CDT	Frost Advisory	LZK	Cleburne, Independence, Jackson	7 hr
Mar 31, 4:17 AM CDT	Freeze Warning	LZK	Baxter, Cleburne, Fulton, Independence, Izard, Jackson and 7 more	29 hr
Mar 31, 2:38 PM CDT	Freeze Watch	LZK	Arkansas, Baxter, Bradley, Calhoun, Clark, Cleburne and 30 more	24 hr

Nearby

Special Weather Statements in Arkansas, 2021 Every special weather statement 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.