Alert archive / Mississippi / Special Weather Statements in 2012

Special Weather Statement, NWS Jackson, MS

July 21, 2012Lowndes County, Noxubee County, Mississippi

NWS Jackson, MS issued this special weather statement at Jul 21, 2012, 4:19 AM CDT for Lowndes County, Noxubee County, Mississippi. It was in force for 56 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 21, 2012, 4:19 AM CDT (09:19 UTC)
Expired: Jul 21, 2012, 5:15 AM CDT
In force: 56 min
Issued by: NWS Jackson, MS

Counties Lowndes County, MS, Noxubee County, MS

The radar

The Columbus AFB radar (KGWX), 84 km from the middle of the area, began a volume at 09:19 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

Jackson, MS (KJAN), launched 00:00Z, 9.3 hours before the alert went out and 178 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: 4897 J/kg
Mixed-layer CIN: -2 J/kg
Mixed-layer LCL: 1030 m above ground
0-6 km bulk shear: 31 kt
0-1 km storm-relative helicity: 7 m²/s²
0-3 km storm-relative helicity: 121 m²/s²
Significant tornado parameter: 1.7
Supercell composite: 9.9

Open this sounding in Storm Lab

The text

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

<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Service Notice</title>
  <link rel="stylesheet" href="index.css">
</head>
<body>
  <main class="wrap">
    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
      <p id="message2">
        Please try again in a few minutes.
      </p>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>

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 Jackson, MS wrote its last area forecast discussion before this special weather statement went out at Jul 21, 3:19 AM CDT, 1 hour earlier.

Area forecast discussion, Jul 21, 3:19 AM CDT, 1 hour before

<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Service Notice</title>
  <link rel="stylesheet" href="index.css">
</head>
<body>
  <main class="wrap">
    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
      <p id="message2">
        Please try again in a few minutes.
      </p>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</html>

Hazardous weather outlook, Jul 21, 4:18 AM CDT, 1 minute before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE JACKSON MS
418 AM CDT SAT JUL 21 2012

LAZ007>009-015-016-023>026-MSZ040>066-072>074-220930-
MOREHOUSE-WEST CARROLL-EAST CARROLL-RICHLAND-MADISON LA-
FRANKLIN LA-CATAHOULA-TENSAS-CONCORDIA-ISSAQUENA-SHARKEY-YAZOO-
MADISON MS-LEAKE-NESHOBA-KEMPER-WARREN-HINDS-RANKIN-SCOTT-NEWTON-
LAUDERDALE-CLAIBORNE-COPIAH-SIMPSON-SMITH-JASPER-CLARKE-JEFFERSON-
ADAMS-FRANKLIN MS-LINCOLN-LAWRENCE-JEFFERSON DAVIS-COVINGTON-
JONES-MARION-LAMAR-FORREST-
418 AM CDT SAT JUL 21 2012

THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL MISSISSIPPI AND
NORTHEAST LOUISIANA.

.DAY ONE...TODAY AND TONIGHT

A MIX OF STRONG TO POSSIBLY SEVERE STORMS WILL BE POSSIBLE TODAY
MAINLY ACROSS CENTRAL AND SOUTHERN AREAS. LOCALLY HEAVY RAINFALL ALONG
WITH GUSTY WINDS TO 40-60 MPH AND FREQUENT LIGHTNING WILL BE POSSIBLE
IN THE STRONGER STORMS.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY

THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW.

.SPOTTER CALL TO ACTION STATEMENT...
THE ACTIVATION OF STORM SPOTTERS...HAM RADIO OPERATORS...AND
EMERGENCY MANAGEMENT PERSONNEL IN SUPPORT OF SEVERE WEATHER
OPERATIONS IS NOT EXPECTED THROUGH NEXT FRIDAY.

ARZ074-075-MSZ018-019-025>039-220930-
ASHLEY-CHICOT-BOLIVAR-SUNFLOWER-LEFLORE-GRENADA-CARROLL-
MONTGOMERY-WEBSTER-CLAY-LOWNDES-CHOCTAW-OKTIBBEHA-WASHINGTON-
HUMPHREYS-HOLMES-ATTALA-WINSTON-NOXUBEE-
418 AM CDT SAT JUL 21 2012

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF CENTRAL MISSISSIPPI
AND EXTREME SOUTHEAST ARKANSAS.

.DAY ONE...TODAY AND TONIGHT

THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY

THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW.

.SPOTTER CALL TO ACTION STATEMENT...
THE ACTIVATION OF STORM SPOTTERS...HAM RADIO OPERATORS...AND
EMERGENCY MANAGEMENT PERSONNEL IN SUPPORT OF SEVERE WEATHER
OPERATIONS IS NOT EXPECTED THROUGH NEXT FRIDAY.

FOR MORE INFORMATION PLEASE VISIT OUR WEBSITE AT
WWW.SRH.NOAA.GOV/JAN.

CME

In the hours before

Special weather statement, Jul 21, 3:31 AM CDT, 48 minutes before

ARZ075-210915-
CHICOT AR-
331 AM CDT SAT JUL 21 2012

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
331 AM CDT SAT JUL 21 2012

A STRONG THUNDERSTORM CAPABLE OF PRODUCING 40 TO 50 MPH WINDS WAS
LOCATED 7 MILES NORTH OF DERMOTT AT 331 AM CDT...MOVING SOUTH AT 15
MPH.

VERY HEAVY RAIN ALONG WITH CONTINUOUS CLOUD TO GROUND LIGHTNING ARE
ALSO POSSIBLE WITH THIS STORM.

PEOPLE IN NORTHWESTERN CHICOT COUNTY SHOULD MONITOR THIS STORM
CLOSELY.

LAT...LON 3357 9135 3356 9134 3354 9134 3352 9132
      3341 9131 3340 9146 3352 9146 3356 9146
      3357 9145
TIME...MOT...LOC 0831Z 359DEG 12KT 3362 9144

CME

Special weather statement, Jul 21, 3:48 AM CDT, 31 minutes before

MSZ039-210920-
NOXUBEE MS-
348 AM CDT SAT JUL 21 2012

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
348 AM CDT SAT JUL 21 2012

A STRONG THUNDERSTORM CAPABLE OF PRODUCING PEA TO DIME SIZE HAIL AND
40 TO 50 MPH WINDS WAS LOCATED 4 MILES NORTHWEST OF MACON AT 348 AM
CDT...MOVING EAST AT 10 MPH.

VERY HEAVY RAIN ALONG WITH CONTINUOUS CLOUD TO GROUND LIGHTNING ARE
ALSO POSSIBLE WITH THIS STORM.

PEOPLE IN CENTRAL NOXUBEE COUNTY SHOULD MONITOR THIS STORM CLOSELY.

LAT...LON 3325 8842 3305 8846 3308 8872 3326 8870
TIME...MOT...LOC 0848Z 275DEG 11KT 3316 8860

CME

Special weather statement, Jul 21, 4:11 AM CDT, 8 minutes before

ARZ074-210955-
ASHLEY AR-
411 AM CDT SAT JUL 21 2012

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
411 AM CDT SAT JUL 21 2012

A STRONG THUNDERSTORM CAPABLE OF PRODUCING PEA TO DIME SIZE HAIL AND
40 MPH WINDS WAS LOCATED 3 MILES WEST OF PARKDALE AT 411 AM CDT...
MOVING EAST AT 5 MPH.

VERY HEAVY RAIN ALONG WITH CONTINUOUS CLOUD TO GROUND LIGHTNING ARE
ALSO POSSIBLE WITH THIS STORM.

HIGH WINDS CAN BRING DOWN TREES AND LARGE LIMBS RESULTING IN SERIOUS
INJURY OR PROPERTY DAMAGE. EXERCISE EXTREME CAUTION WHEN OUTDOORS
DURING SUCH STRONG WINDS...AND BE ESPECIALLY AWARE OF OLDER TREES.

PEOPLE IN SOUTHEASTERN ASHLEY COUNTY SHOULD MONITOR THIS STORM
CLOSELY.

LAT...LON 3322 9165 3320 9146 3301 9146 3301 9145
      3301 9146 3300 9157 3304 9171
TIME...MOT...LOC 0911Z 279DEG 5KT 3312 9159

19

Special weather statement, Jul 21, 4:19 AM CDT, 0 minutes before

MSZ031-039-211015-
NOXUBEE MS-LOWNDES MS-
419 AM CDT SAT JUL 21 2012

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
419 AM CDT SAT JUL 21 2012

A CLUSTER OF STRONG THUNDERSTORMS CAPABLE OF PRODUCING VERY HEAVY
RAIN ALONG WITH CONTINUOUS CLOUD TO GROUND LIGHTNING ARE LOCATED
FROM 9 MILES SOUTHEAST OF COLUMBUS TO 6 MILES SOUTHWEST OF MACON AT
417 AM CDT...MOVING SOUTHEAST AT 5 MPH.

RAINFALL AMOUNTS OF ONE TO TWO INCHES IN JUST AN HOURS TIME ARE
POSSIBLE WITH THIS ACTIVITY.

PEOPLE IN SOUTHERN LOWNDES AND NOXUBEE COUNTIES SHOULD MONITOR THESE
STORMS CLOSELY.

LAT...LON 3295 8833 3293 8835 3293 8871 3321 8875
      3358 8840 3350 8827
TIME...MOT...LOC 0917Z 306DEG 4KT 3341 8830 3305 8863

19

The office that day

Everything else NWS Jackson, MS issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 20, 7:00 PM CDT	Special Weather Statement	JAN	Simpson	30 min
Jul 20, 7:07 PM CDT	Severe Thunderstorm Warning	JAN	Claiborne	38 min
Jul 20, 7:11 PM CDT	Special Weather Statement	JAN	Simpson	29 min
Jul 21, 3:48 AM CDT	Special Weather Statement	JAN	Noxubee	32 min
Jul 21, 5:45 AM CDT	Special Weather Statement	JAN	Newton	45 min
Jul 21, 5:50 AM CDT	Severe Thunderstorm Warning	JAN	Newton	27 min
Jul 21, 6:38 AM CDT	Flash Flood Warning	JAN	Kemper, Lauderdale	2 hr
Jul 21, 6:56 AM CDT	Special Weather Statement	JAN	Rankin	59 min
Jul 21, 7:07 AM CDT	Flash Flood Warning	JAN	Holmes	3 hr
Jul 21, 8:28 AM CDT	Flash Flood Warning	JAN	Rankin	2 hr
Jul 21, 9:25 AM CDT	Flash Flood Warning	JAN	Copiah, Franklin, Lincoln	2 hr
Jul 21, 5:47 AM CDT	Special Weather Statement	JAN	West Carroll	43 min
Jul 21, 3:31 AM CDT	Special Weather Statement	JAN	Chicot	44 min
Jul 21, 4:11 AM CDT	Special Weather Statement	JAN	Ashley	44 min

Nearby

Special Weather Statements in Mississippi, 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.