Alert archive / Arkansas / Special Weather Statements in 2012

Special Weather Statement, NWS Memphis, TN

April 15, 2012Craighead County, Cross County, Poinsett County, Arkansas

NWS Memphis, TN issued this special weather statement at Apr 15, 2012, 9:31 PM CDT for Craighead County, Cross County, Poinsett County, Arkansas. It was in force for 29 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: Apr 15, 2012, 9:31 PM CDT (02:31 UTC)
Expired: Apr 15, 2012, 10:00 PM CDT
In force: 29 min
Issued by: NWS Memphis, TN

Counties Craighead County, AR, Cross County, AR, Poinsett County, AR

The radar

The Memphis radar (KNQA), 83 km from the middle of the area, began a volume at 02:30 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, 2.5 hours before the alert went out and 115 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: 1081 J/kg
Mixed-layer CIN: -14 J/kg
Mixed-layer LCL: 1176 m above ground
0-6 km bulk shear: 61 kt
0-1 km storm-relative helicity: 389 m²/s²
0-3 km storm-relative helicity: 497 m²/s²
Significant tornado parameter: 2.8
Supercell composite: 12.4

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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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 Memphis, TN wrote its last area forecast discussion before this special weather statement went out at Apr 15, 6:45 PM CDT, 2 hours 46 minutes earlier.

Area forecast discussion, Apr 15, 6:45 PM CDT, 2 hours 46 minutes before

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Hazardous weather outlook, Apr 15, 6:28 PM CDT, 3 hours 3 minutes before

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In the hours before

Special weather statement, Apr 15, 8:28 PM CDT, 1 hour 3 minutes before

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Special weather statement, Apr 15, 8:59 PM CDT, 32 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MEMPHIS TN
859 PM CDT SUN APR 15 2012

ARZ017-018-026-027-035-160230-
CRAIGHEAD AR-CROSS AR-GREENE AR-LAWRENCE AR-POINSETT AR-
859 PM CDT SUN APR 15 2012

...THE NATIONAL WEATHER SERVICE IN MEMPHIS HAS ISSUED A SIGNIFICANT
WEATHER ADVISORY UNTIL 930 PM CDT FOR...

  WESTERN CRAIGHEAD COUNTY IN EASTERN ARKANSAS...
  NORTHWESTERN CROSS COUNTY IN EASTERN ARKANSAS...
  WESTERN GREENE COUNTY IN EASTERN ARKANSAS...
  SOUTHEASTERN LAWRENCE COUNTY IN EASTERN ARKANSAS...
  WESTERN POINSETT COUNTY IN EASTERN ARKANSAS...

A LINE OF STRONG THUNDERSTORMS PRODUCING WINDS OF 40 TO 50 MPH WAS
LOCATED FROM 5 MILES NORTHWEST OF FONTAINE TO 11 MILES WEST OF FAIR
OAKS AT 858 PM CDT...MOVING NORTHEAST AT 70 MPH.

PEOPLE IN CRAIGHEAD...CROSS...GREENE...LAWRENCE AND POINSETT
COUNTIES...INCLUDING LOCATIONS NEAR BONO...BROOKLAND...CROWLEYS RIDGE
STATE PARK...JONESBORO AND LAKE FRIERSON STATE PARK...SHOULD MONITOR
THIS STORM CLOSELY.

&&

LAT...LON 3523 9104 3581 9104 3611 9092 3622 9066
      3599 9050 3520 9104 3522 9106
TIME...MOT...LOC 0158Z 221DEG 59KT 3609 9083 3557 9102
          3531 9117

Special weather statement, Apr 15, 9:20 PM CDT, 11 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MEMPHIS TN
920 PM CDT SUN APR 15 2012

ARZ009-018-160245-
CLAY AR-GREENE AR-
920 PM CDT SUN APR 15 2012

...THE NATIONAL WEATHER SERVICE IN MEMPHIS HAS ISSUED A SIGNIFICANT
WEATHER ADVISORY UNTIL 945 PM CDT FOR...

  CLAY COUNTY IN EASTERN ARKANSAS...
  NORTH CENTRAL GREENE COUNTY IN EASTERN ARKANSAS...

A STRONG THUNDERSTORM PRODUCING WINDS OF 40 TO 45 MPH WAS LOCATED 4
MILES NORTHWEST OF BEECH GROVE AT 920 PM CDT...MOVING NORTHEAST AT
60 MPH.

PEOPLE IN CLAY AND GREENE COUNTIES...INCLUDING LOCATIONS NEAR CHALK
BLUFF NATURAL AREA AND CORNING...SHOULD MONITOR THIS STORM CLOSELY.

&&

LAT...LON 3650 9056 3650 9022 3649 9017 3612 9061
      3624 9077 3651 9060
TIME...MOT...LOC 0220Z 222DEG 51KT 3625 9061

Special weather statement, Apr 15, 9:31 PM CDT, 0 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 16, 3:08 AM CDT	Special Weather Statement	MEG	Tippah, Union	37 min
Apr 16, 1:08 AM CDT	Special Weather Statement	MEG	Haywood, Madison	37 min
Apr 16, 1:30 AM CDT	Special Weather Statement	MEG	Fayette, Hardeman	45 min
Apr 16, 3:13 AM CDT	Special Weather Statement	MEG	McNairy	47 min
Apr 15, 8:28 PM CDT	Special Weather Statement	MEG	Lawrence	47 min
Apr 15, 8:59 PM CDT	Special Weather Statement	MEG	Craighead	31 min
Apr 15, 9:20 PM CDT	Special Weather Statement	MEG	Clay	25 min
Apr 15, 9:45 PM CDT	Special Weather Statement	MEG	Clay, Greene	30 min
Apr 15, 9:59 PM CDT	Special Weather Statement	MEG	Cross, Mississippi	31 min

Nearby

Special Weather Statements in Arkansas, 2012 Every special weather statement in 2012

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.