Alert archive / Arkansas / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 266, NWS Little Rock, AR

November 11, 20214 counties in Arkansas

NWS Little Rock, AR issued this severe thunderstorm warning at Nov 11, 2021, 12:47 AM CST for 4 counties in Arkansas. It was in force for 43 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
Nov 11, 2021, 12:47 AM CST (06:47 UTC)
Expired
Nov 11, 2021, 1:30 AM CST
In force
43 min
Issued by
NWS Little Rock, AR
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Conway County, AR, Faulkner County, AR, Perry County, AR, Pulaski County, AR

The radar

The Little Rock radar (KLZK), 35 km from the middle of the area, began a volume at 06:48 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

Springfield, MO (KSGF), launched 00:00Z, 6.8 hours before the alert went out and 235 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 00:00Z on 2021-11-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 5 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 00:00Z on 2021-11-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 185 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
5 J/kg
Mixed-layer CIN
-156 J/kg
Mixed-layer LCL
1136 m above ground
0-6 km bulk shear
36 kt
0-1 km storm-relative helicity
185 m²/s²
0-3 km storm-relative helicity
187 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

894 
WUUS54 KLZK 110647
SVRLZK
ARC029-045-105-119-110730-
/O.NEW.KLZK.SV.W.0266.211111T0647Z-211111T0730Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Little Rock AR
1247 AM CST Thu Nov 11 2021

The National Weather Service in Little Rock has issued a

* Severe Thunderstorm Warning for...
  Northeastern Perry County in central Arkansas...
  Southern Faulkner County in central Arkansas...
  Southeastern Conway County in central Arkansas...
  Northern Pulaski County in central Arkansas...

* Until 130 AM CST.

* At 1246 AM CST, severe thunderstorms were located along a line
  extending from near Toad Suck to 6 miles north of Little Italy to
  near Wye Mountain, moving east at 40 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

  IMPACT...Expect damage to roofs, siding, and trees.

* Locations impacted include...
  North Little Rock...              Conway...
  Sherwood...                       Jacksonville...
  Maumelle...                       Little Rock AFB...
  North Little Rock Airport...      Vilonia...
  Mayflower...                      Menifee...
  Houston...                        Little Italy...
  Gravel Ridge...                   Morgan...
  Marche...                         Oak Grove in Pulaski County...
  Olmstead...                       Roland in Pulaski County...
  Gibson...                         Toad Suck...

This includes the following highways...
 Interstate 40 between mile markers 120 and 148.
 US Highway 67 between mile markers 2 and 5.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3479 9222 3492 9279 3505 9268 3516 9266
      3507 9212 3501 9212 3501 9211 3492 9209
TIME...MOT...LOC 0646Z 284DEG 33KT 3511 9257 3504 9257 3496 9265 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

232
3 follow-up statements
242 
WWUS54 KLZK 110702
SVSLZK

Severe Weather Statement
National Weather Service Little Rock AR
102 AM CST Thu Nov 11 2021

ARC029-110711-
/O.CAN.KLZK.SV.W.0266.000000T0000Z-211111T0730Z/
Conway AR-
102 AM CST Thu Nov 11 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN CONWAY COUNTY IS
CANCELLED...

The storms which prompted the warning have moved out of the warned 
area. Therefore, the warning has been cancelled.

LAT...LON 3479 9222 3493 9261 3502 9251 3513 9250
      3507 9212 3501 9212 3501 9211 3492 9209
TIME...MOT...LOC 0701Z 284DEG 33KT 3508 9242 3501 9242 3493 9250 

$$

ARC045-105-119-110730-
/O.CON.KLZK.SV.W.0266.000000T0000Z-211111T0730Z/
Perry AR-Faulkner AR-Pulaski AR-
102 AM CST Thu Nov 11 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 130 AM CST
FOR EAST CENTRAL PERRY...SOUTHERN FAULKNER AND NORTHEASTERN PULASKI
COUNTIES...

At 101 AM CST, severe thunderstorms were located along a line
extending from Conway to near Mayflower to Roland in Pulaski County,
moving east at 40 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...Expect damage to roofs, siding, and trees.

Locations impacted include...
North Little Rock...              Conway...
Sherwood...                       Jacksonville...
Maumelle...                       Little Rock AFB...
North Little Rock Airport...      Vilonia...
Mayflower...                      Little Italy...
Gravel Ridge...                   Morgan...
Marche...                         Oak Grove in Pulaski County...
Olmstead...                       Roland in Pulaski County...
Gibson...                         Camp Robinson...
Sylvan Hills...                   Lakewood...

This includes the following highways...
 Interstate 40 between mile markers 122 and 146.
 US Highway 67 between mile markers 2 and 5.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3479 9222 3493 9261 3502 9251 3513 9250
      3507 9212 3501 9212 3501 9211 3492 9209
TIME...MOT...LOC 0701Z 284DEG 33KT 3508 9242 3501 9242 3493 9250 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

232
211 
WWUS54 KLZK 110712
SVSLZK

Severe Weather Statement
National Weather Service Little Rock AR
112 AM CST Thu Nov 11 2021

ARC105-110721-
/O.CAN.KLZK.SV.W.0266.000000T0000Z-211111T0730Z/
Perry AR-
112 AM CST Thu Nov 11 2021

...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL PERRY COUNTY IS
CANCELLED...

The storms which prompted the warning have moved out of the warned 
area. Therefore, the warning has been cancelled.

LAT...LON 3479 9222 3492 9255 3502 9247 3511 9245
      3507 9212 3501 9212 3501 9211 3492 9209
TIME...MOT...LOC 0711Z 285DEG 28KT 3506 9235 3499 9235 3491 9243 

$$

ARC045-119-110730-
/O.CON.KLZK.SV.W.0266.000000T0000Z-211111T0730Z/
Faulkner AR-Pulaski AR-
112 AM CST Thu Nov 11 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 130 AM CST
FOR SOUTHERN FAULKNER AND NORTHEASTERN PULASKI COUNTIES...

At 111 AM CST, severe thunderstorms were located along a line
extending from near Pickles Gap to near Mayflower to near Morgan,
moving east at 35 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

IMPACT...Expect damage to roofs, siding, and trees.

Locations impacted include...
North Little Rock...              Conway...
Sherwood...                       Jacksonville...
Maumelle...                       Little Rock AFB...
North Little Rock Airport...      Vilonia...
Mayflower...                      Gravel Ridge...
Morgan...                         Marche...
Oak Grove in Pulaski County...    Olmstead...
Roland in Pulaski County...       Gibson...
Camp Robinson...                  Sylvan Hills...
Lakewood...                       Hamlet...

This includes the following highways...
 Interstate 40 between mile markers 126 and 146.
 US Highway 67 between mile markers 2 and 5.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3479 9222 3492 9255 3502 9247 3511 9245
      3507 9212 3501 9212 3501 9211 3492 9209
TIME...MOT...LOC 0711Z 285DEG 28KT 3506 9235 3499 9235 3491 9243 

HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH

$$

232
110 
WWUS54 KLZK 110723
SVSLZK

Severe Weather Statement
National Weather Service Little Rock AR
123 AM CST Thu Nov 11 2021

ARC045-119-110732-
/O.EXP.KLZK.SV.W.0266.000000T0000Z-211111T0730Z/
Faulkner AR-Pulaski AR-
123 AM CST Thu Nov 11 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN FAULKNER AND
NORTHEASTERN PULASKI COUNTIES WILL EXPIRE AT 130 AM CST...
            
The storms which prompted the warning have weakened below severe
limits, and no longer pose an immediate threat to life or property.
Therefore, the warning will be allowed to expire.  However gusty
winds are still possible with these thunderstorms.

LAT...LON 3479 9222 3492 9255 3502 9247 3511 9245
      3507 9212 3501 9212 3501 9211 3492 9209
TIME...MOT...LOC 0722Z 284DEG 33KT 3504 9225 3497 9225 3489 9233 

$$

232

What forecasters said that day

The local office's own words before this severe thunderstorm 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 severe thunderstorm warning went out at Nov 10, 11:15 PM CST, 1 hour 32 minutes earlier.

Area forecast discussion, Nov 10, 11:15 PM CST, 1 hour 32 minutes before
Area Forecast Discussion...UPDATED
National Weather Service Little Rock AR
1115 PM CST Wed Nov 10 2021

.AVIATION...
Updated for 06Z terminals...

A trough of low pressure will bring a cold front across the state
tonight with showers and thunderstorms. Gusty southwest winds are
expected ahead of the front, and northwest winds behind the
front. Low ceilings and restricted visibilities (IFR or lower) are
expected at times, especially with heavier precipitation. Rain
should exit eastern sections in the morning. Clouds will decrease
in the afternoon. Expect VFR conditions by mid day or early
afternoon as the front exits the state.
&&

.PREV DISCUSSION...
(ISSUED 231 PM CST Wed Nov 10 2021)
SHORT TERM...Today Through Friday

Showers and storms continue developing across OK and KS this
afternoon in response to a deepening upper trough, currently
positioned over the central Plains, and sharpening attendant cold
front draped from northern KS southwestward across West TX. At
present, only increasing cloud cover is noted over AR although
isolated to widely scattered showers will become increasingly
likely by late afternoon into the evening.

The cold front will accelerate through AR tonight into Thursday
morning as the parent upper trough advances eastward across the
Plains. Increasing H850 flow and pre-frontal WAA will further
increase convective coverage as the front moves in with virtually
the entire area expected to see measurable rain, although lower
deep tropospheric moisture content will limit max values to under
2 inches, except in localized heavier downpours.

Severe weather potential remains low based on this morning's
guidance and trends, although there will be modest potential for a
couple of strong storms across western/southwestern AR as
convection grows upscale along the surging front. Instability
progs keep MUCAPE values just under 1000 J/kg and weakening deep
layer shear/kinematics will preclude a more substantial severe
weather risk. Damaging winds and isolated severe hail will be
possible in the strongest storms this evening and overnight.

The front and associated convective activity will push east of
the area by very early afternoon at the latest with clearing
skies and breezy northwesterly winds in its wake. While drier air
will filter in through the day tomorrow, the bulk of cooler air
will not arrive until very late in the period as another front
quickly drops in from the north on Friday. Some rain is possible
over northern sections during the day Friday with seasonably cool
air moving in by later Friday and into the long term.

LONG TERM...Friday Night Through Wednesday

By late Friday, an upper trough axis will be pushing east of the
state and NW upper flow will have set in across much of the
Plains. The upper ridge that had expanded across the western
states will weaken as a SWT moves along the leeward side of the
ridge across the northern Plains Saturday, prolonging NW upper
flow. As the SWT continues SEward, the larger upper trough will
deepen across the Midwest and Ohio River Valley Regions Sunday. At
the same time, another upper ridge will build and expand across
the western states with continued surface high pressure across the
southern Plains.

From early to mid next week, the upper ridge will progress eastward,
followed by a large-scale upper trough extending from an upper low
over Canada southward through the Plains. This will be reflected at
the surface as a low pressure system in Canada, with a frontal
boundary extending southward. Our next chance for widespread
precipitation will be ahead of that boundary the middle of next
week.

Temperatures are forecast below average until next Tuesday, when
southerly flow on the west side of surface high pressure will return
warmer southerly air to near normal levels.

&&

.LZK Watches/Warnings/Advisories...NONE.
&&

Aviation...51/57
Hazardous weather outlook, Nov 10, 2:36 PM CST, 10 hours 11 minutes before
Hazardous Weather Outlook...UPDATED
National Weather Service Little Rock AR
236 PM CST Wed Nov 10 2021

ARZ003>008-012>017-021>025-030>034-037>047-052>057-062>069-111000-
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-
236 PM CST Wed Nov 10 2021

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

.DAY ONE...This Afternoon and Tonight

As a cold front sweeps through the state tonight, showers and
storms will become widespread. Isolated strong to severe storms
will be possible over western and southwestern Arkansas, although
the threat for severe weather remains low.

.DAYS TWO THROUGH SEVEN...Thursday Through Tuesday

Hazardous weather is not expected.

.Spotter Information Statement...

Spotter Activation Will Not Be Needed.

&&

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

DTC/57/71

In the hours before

Special weather statement, Nov 10, 11:39 PM CST, 1 hour 8 minutes before
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Special weather statement, Nov 11, 12:08 AM CST, 39 minutes before
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Special weather statement, Nov 11, 12:08 AM CST, 39 minutes before
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Special weather statement, Nov 11, 12:29 AM CST, 18 minutes before
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Special weather statement, Nov 11, 12:42 AM CST, 5 minutes before
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Special weather statement, Nov 11, 12:44 AM CST, 3 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Nov 10, 10:46 PM CSTSpecial Weather StatementLZKJohnson, Logan44 min
Nov 10, 11:21 PM CSTSpecial Weather StatementLZKConway, Montgomery, Perry, Pope, Scott, Yell39 min
Nov 10, 11:37 PM CSTSpecial Weather StatementLZKScott23 min
Nov 10, 11:39 PM CSTSpecial Weather StatementLZKMontgomery36 min
Nov 11, 12:08 AM CSTSpecial Weather StatementLZKConway, Van Buren37 min
Nov 11, 12:08 AM CSTSpecial Weather StatementLZKGarland, Montgomery, Pike37 min
Nov 11, 12:29 AM CSTSpecial Weather StatementLZKPerry31 min
Nov 11, 12:42 AM CSTSpecial Weather StatementLZKClark, Garland, Hot Spring48 min
Nov 11, 12:44 AM CSTSpecial Weather StatementLZKCleburne, Faulkner31 min
Nov 11, 1:22 AM CSTSpecial Weather StatementLZKPulaski23 min
Nov 11, 1:48 AM CSTSpecial Weather StatementLZKLonoke, Pulaski27 min

Nearby

Severe Thunderstorm Warnings in Arkansas, 2021Every severe thunderstorm warning 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.