Alert archive / Arkansas / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 310, NWS Memphis, TN

August 7, 2018Craighead County, Greene County, Arkansas

NWS Memphis, TN issued this severe thunderstorm warning at Aug 7, 2018, 5:02 PM CDT for Craighead County, Greene County, Arkansas. It was in force for 27 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
Aug 7, 2018, 5:02 PM CDT (22:02 UTC)
Expired
Aug 7, 2018, 5:29 PM CDT
In force
27 min
Issued by
NWS Memphis, TN
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Craighead County, AR, Greene County, AR

The radar

The Memphis radar (KNQA), 102 km from the middle of the area, began a volume at 22:04 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 (KBYH), launched 12:00Z, 10.0 hours before the alert went out and 143 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, Little Rock, AR at 12:00Z on 2018-08-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 282 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Little Rock, AR at 12:00Z on 2018-08-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -35 square meters per square second.1939Sfc1 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
282 J/kg
Mixed-layer CIN
-101 J/kg
Mixed-layer LCL
1343 m above ground
0-6 km bulk shear
4 kt
0-1 km storm-relative helicity
-35 m²/s²
0-3 km storm-relative helicity
-21 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

630 
WUUS54 KMEG 072202
SVRMEG
ARC031-055-072245-
/O.NEW.KMEG.SV.W.0310.180807T2202Z-180807T2245Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Memphis TN
502 PM CDT TUE AUG 7 2018

The National Weather Service in Memphis has issued a

* Severe Thunderstorm Warning for...
  Southwestern Greene County in eastern Arkansas...
  Central Craighead County in eastern Arkansas...

* Until 545 PM CDT.

* At 501 PM CDT, a severe thunderstorm was located over Fontaine, or
  near Lake Frierson State Park, moving southeast at 20 mph.

  HAZARD...60 mph wind gusts.

  SOURCE...Radar indicated.

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

* Locations impacted include...
  Jonesboro, Lake City, Bay, Brookland, Lake Frierson State Park,
  Fontaine, Needham, Lunsford, Schug, Gum Point, Farrville,
  Southland, Lester, Walnut Corner, Bethel, Finch, Lache Lake,
  Lorado, Herndon and Goobertown.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Small hail and damaging winds and continuous cloud to ground 
lightning is occurring with this storm. Move indoors immediately.
Lightning is one of nature's leading killers. Remember, if you can
hear thunder, you are close enough to be struck by lightning.

&&

LAT...LON 3598 9084 3599 9085 3605 9080 3597 9036
      3573 9050 3597 9085
TIME...MOT...LOC 2201Z 297DEG 16KT 3600 9077 

HAIL...<.75IN
WIND...60MPH
 
$$

TLSJr
2 follow-up statements
799 
WWUS54 KMEG 072220
SVSMEG

Severe Weather Statement
National Weather Service Memphis TN
520 PM CDT TUE AUG 7 2018

ARC031-055-072245-
/O.CON.KMEG.SV.W.0310.000000T0000Z-180807T2245Z/
Greene AR-Craighead AR-
520 PM CDT TUE AUG 7 2018

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 545 PM CDT
FOR SOUTH CENTRAL GREENE AND EASTERN CRAIGHEAD COUNTIES...

At 518 PM CDT, a severe thunderstorm was located over Lake Frierson
State Park, moving southeast at 20 mph.

HAZARD...60 mph wind gusts.

SOURCE...Radar indicated.

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

Locations impacted include...
Jonesboro, Lake City, Bay, Brookland, Lake Frierson State Park,
Needham, Lunsford, Schug, Gum Point, Farrville, Southland, Lester,
Bethel, Lache Lake, Lorado, Herndon and Goobertown.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Continuous cloud to ground lightning is occurring with this storm.
Move indoors immediately. Lightning is one of nature's leading
killers. Remember, if you can hear thunder, you are close enough to
be struck by lightning.

&&

LAT...LON 3601 9073 3597 9036 3573 9050 3596 9077
TIME...MOT...LOC 2218Z 298DEG 16KT 3598 9071 

HAIL...<.75IN
WIND...60MPH
 
$$

TLSJr
920 
WWUS54 KMEG 072229
SVSMEG

Severe Weather Statement
National Weather Service Memphis TN
529 PM CDT TUE AUG 7 2018

ARC031-055-072238-
/O.CAN.KMEG.SV.W.0310.000000T0000Z-180807T2245Z/
Greene AR-Craighead AR-
529 PM CDT TUE AUG 7 2018

...THE SEVERE THUNDERSTORM WARNING FOR SOUTH CENTRAL GREENE AND
EASTERN CRAIGHEAD COUNTIES IS CANCELLED...
                
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning has been cancelled.  However small hail, gusty
winds and heavy rain are still possible with this thunderstorm.

LAT...LON 3601 9073 3597 9036 3573 9050 3596 9077
TIME...MOT...LOC 2225Z 297DEG 16KT 3596 9066 

$$

TLSJr

The office that day

Everything else NWS Memphis, TN issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 7, 2:37 PM CDTSpecial Weather StatementMEGRandolph38 min
Aug 7, 3:45 PM CDTSpecial Weather StatementMEGClay45 min
Aug 7, 4:10 PM CDTSpecial Weather StatementMEGLawrence50 min
Aug 7, 4:23 PM CDTSpecial Weather StatementMEGClay52 min
Aug 7, 4:40 PM CDTSpecial Weather StatementMEGPoinsett50 min
Aug 7, 4:53 PM CDTSpecial Weather StatementMEGCraighead, Greene67 min

Nearby

Severe Thunderstorm Warnings in Arkansas, 2018Every severe thunderstorm warning in 2018

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.