Alert archive / Arkansas / Tornado Warnings in 2017

Tornado Warning 34, NWS Memphis, TN

July 27, 2017Crittenden County, Cross County, St. Francis County, Arkansas

NWS Memphis, TN issued this tornado warning at Jul 27, 2017, 7:14 PM CDT for Crittenden County, Cross County, St. Francis County, Arkansas. It was in force for 14 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
Jul 27, 2017, 7:14 PM CDT (00:14 UTC)
Expired
Jul 27, 2017, 7:28 PM CDT
In force
14 min
Issued by
NWS Memphis, TN
Area
Storm-based polygon
Tornado
Radar indicated
Hail
0.75 in

Counties Crittenden County, AR, Cross County, AR, St. Francis County, AR

The radar

The Memphis radar (KNQA), 67 km from the middle of the area, began a volume at 00:17 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 00:00Z, 0.2 hours before the alert went out and 69 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 00:00Z on 2017-07-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1880 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 00:00Z on 2017-07-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 54 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
1880 J/kg
Mixed-layer CIN
-31 J/kg
Mixed-layer LCL
1307 m above ground
0-6 km bulk shear
18 kt
0-1 km storm-relative helicity
54 m²/s²
0-3 km storm-relative helicity
149 m²/s²
Significant tornado parameter
0.3
Supercell composite
3.4

Open this sounding in Storm Lab

The text

As transmitted.

028 
WFUS54 KMEG 280014
TORMEG
ARC035-037-123-280100-
/O.NEW.KMEG.TO.W.0034.170728T0014Z-170728T0100Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Memphis TN
714 PM CDT THU JUL 27 2017

The National Weather Service in Memphis has issued a

* Tornado Warning for...
  Northeastern St. Francis County in eastern Arkansas...
  West central Crittenden County in eastern Arkansas...
  Southeastern Cross County in eastern Arkansas...

* Until 800 PM CDT
    
* At 713 PM CDT, a severe thunderstorm producing a tornado was
  located near Parkin, moving southeast at 35 mph.

  HAZARD...Tornado. 

  SOURCE...Radar indicated rotation. 

  IMPACT...Flying debris will be dangerous to those caught without 
           shelter. Mobile homes will be damaged or destroyed. 
           Damage to roofs, windows, and vehicles will occur.  Tree 
           damage is likely. 

* This dangerous storm will be near...
  Parkin around 720 PM CDT. 
  Earle around 725 PM CDT. 
  Crawfordsville and Jennette around 740 PM CDT. 
  Edmondson and Simsboro around 750 PM CDT. 

Other locations impacted by this tornadic thunderstorm include
Smithdale, Kate, Cottonwood Corner, Browns, Louise, Jonquil, Brice,
Cunningham Corner, Tarsus and McDonald.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW! Move to a storm shelter or an interior room on the
lowest floor of a sturdy building. Avoid windows. If you are
outdoors, in a mobile home, or in a vehicle, move to the closest
substantial shelter and protect yourself from flying debris.

&&

LAT...LON 3522 9078 3538 9066 3515 9018 3494 9050
TIME...MOT...LOC 0013Z 302DEG 32KT 3527 9064 

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$
1 follow-up statement
835 
WWUS54 KMEG 280028
SVSMEG

Severe Weather Statement
National Weather Service Memphis TN
728 PM CDT THU JUL 27 2017

ARC035-037-123-280038-
/O.CAN.KMEG.TO.W.0034.000000T0000Z-170728T0100Z/
St. Francis AR-Crittenden AR-Cross AR-
728 PM CDT THU JUL 27 2017

...THE TORNADO WARNING FOR NORTHEASTERN ST. FRANCIS...WEST CENTRAL
CRITTENDEN AND SOUTHEASTERN CROSS COUNTIES IS CANCELLED...
                
The storm which prompted the warning has weakened below severe
limits, and is no longer producing a tornado. Therefore, the warning
has been cancelled.

LAT...LON 3522 9078 3538 9066 3515 9018 3494 9050
TIME...MOT...LOC 0026Z 302DEG 32KT 3520 9050 

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 28, 12:24 PM CDTAreal Flood AdvisoryMEGMississippi2 hr
Jul 28, 2:28 PM CDTAreal Flood AdvisoryMEGCrittenden2 hr

Nearby

Tornado Warnings in Arkansas, 2017Every tornado warning in 2017Tornadoes in 2017

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.