Alert archive / Mississippi / Special Weather Statements in 2012
Special Weather Statement, NWS Jackson, MS
NWS Jackson, MS issued this special weather statement at Dec 4, 2012, 2:39 PM CST for Grenada County, Mississippi. It was in force for 46 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
- Dec 4, 2012, 2:39 PM CST (20:39 UTC)
- Expired
- Dec 4, 2012, 3:25 PM CST
- In force
- 46 min
- Issued by
- NWS Jackson, MS
County Grenada County, MS
The radar
The Columbus AFB radar (KGWX), 133 km from the middle of the area, began a volume at 20:39 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 12:00Z, 8.7 hours before the alert went out and 170 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.
- Mixed-layer CAPE
- 177 J/kg
- Mixed-layer CIN
- -65 J/kg
- Mixed-layer LCL
- 670 m above ground
- 0-6 km bulk shear
- 18 kt
- 0-1 km storm-relative helicity
- 115 m²/s²
- 0-3 km storm-relative helicity
- 149 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.4
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 Dec 4, 11:50 AM CST, 2 hours 49 minutes earlier.
Area forecast discussion, Dec 4, 11:50 AM CST, 2 hours 49 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE JACKSON MS 1150 AM CST TUE DEC 4 2012 .UPDATE...A LARGE AREA OF RAIN HAS DEVELOPED ACROSS THE SOUTHEAST PORTIONS OF THE CWA...WITH RAIN TRAINING OVER THE SAME AREAS FOR THE PAST FEW HOURS. LUCKILY RAINFALL AMOUNTS HAVE BEEN SMALL. LIGHT TO MODERATE RAINFALL WILL CONTINUE...EXPECTING ISOLATED DOWNPOURS NEAR THUNDERSTORMS. CONVECTION CONTINUES TO DEVELOP ALONG THE LOUISIANA COAST BUT STRUGGLES FURTHER INLAND. BEST INSTABILITY REMAINS JUST WEST OF THE CWA...SO EXPECTING MORE CONVECTION TO DEVELOP OVER THE WESTERN PARTS OF THE CWA SHORTLY. THE BOUNDARY WAS NOT MOVING SOUTH VERY FAST...SO ADJUSTED THE POPS AND THUNDER WORDING ACROSS THE NORTHWEST...MAINLY TO PUSH WIDESPREAD THUNDER BACK A LITTLE LATER INTO THE AFTERNOON. WENT WITH ISOLATED THUNDER WORDING FOR THE NEXT COUPLE HOURS FOR AREAS WEST OF INTERSTATE 55. MODELS KEEP THE INSTABILITY TO THE WEST...BUT COULD SEE ENOUGH ENERGY TO BRING SOME STORMS INTO THE AREA...MAINLY THE WEST. WILL KEEP THE STRONG WORDING IN THE HWO. TEMPS WERE ON TARGET. OVERALL NO BIG CHANGES. UPDATE COMING SHORTLY. && .AVIATION...WIDESPREAD MVFR CLOUD DECKS...ALONG WITH LOCAL POCKETS OF IFR...WILL PERSIST INTO THE EARLY AFTERNOON. AREAS OF RAIN WILL BE COMMON ALONG AND E OF THE NATCHEZ TRACE WITH SCT TSTMS DVLPG AND CONTINUING THROUGH THE EVENING. ISOLATED SHOWERS TO THE NW OF THE TRACE WILL INCREASE THIS AFTERNOON AND CONTINUE THROUGH THE EARLY EVENING AS A COLD FRONT/UPPER LEVEL SYSTEM APPROACH TODAY. LOW CEILINGS WILL BE A PROBLEM FOR MUCH OF THE PERIOD...ESPECIALLY LATE TONIGHT WHEN WIDESPREAD LIFR CATEGORY LOW STRATUS COULD DEVELOP. MVFR OCNL IFR VSBYS CAN BE EXPECTED IN AREAS OF RAIN. && .PRELIMINARY POINT TEMPS/POPS... JACKSON 75 56 70 54 / 79 88 55 20 MERIDIAN 72 57 71 52 / 78 84 63 23 VICKSBURG 76 54 68 49 / 74 79 37 15 HATTIESBURG 77 58 74 53 / 66 75 56 18 NATCHEZ 74 57 69 53 / 70 77 37 15 GREENVILLE 75 53 65 48 / 77 68 20 11 GREENWOOD 73 55 67 52 / 81 79 37 16 && .JAN WATCHES/WARNINGS/ADVISORIES... MS...NONE. LA...NONE. AR...NONE. && 07/03
Hazardous weather outlook, Dec 4, 2:26 PM CST, 13 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE JACKSON MS 226 PM CST TUE DEC 4 2012 ARZ074-075-LAZ007>009-015-016-023>026-MSZ018-019-025>029-032- 034>037-040>043-047>049-053-054-059>062-052030- ASHLEY-CHICOT-MOREHOUSE-WEST CARROLL-EAST CARROLL-RICHLAND- MADISON LA-FRANKLIN LA-CATAHOULA-TENSAS-CONCORDIA-BOLIVAR- SUNFLOWER-LEFLORE-GRENADA-CARROLL-MONTGOMERY-WEBSTER-CHOCTAW- WASHINGTON-HUMPHREYS-HOLMES-ATTALA-ISSAQUENA-SHARKEY-YAZOO- MADISON MS-WARREN-HINDS-RANKIN-CLAIBORNE-COPIAH-JEFFERSON-ADAMS- FRANKLIN MS-LINCOLN- 226 PM CST TUE DEC 4 2012 THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL MISSISSIPPI... NORTHEAST LOUISIANA...AND EXTREME SOUTHEAST ARKANSAS. .DAY ONE...TONIGHT AND WEDNESDAY STRONG THUNDERSTORMS WILL BE POSSIBLE THIS AFTERNOON AND EVENING. THEY WILL HAVE THE POTENTIAL FOR WIND GUSTS OF 40 TO 50 MPH AND SMALL HAIL ALONG WITH FREQUENT LIGHTNING STRIKES AND PERIODS OF HEAVY RAIN. ONE OR TWO SEVERE STORMS WITH WIND GUSTS TO 60 MPH AND QUARTER SIZE HAIL CAN NOT BE RULED OUT. LOCAL FLOODING PROBLEMS WILL ALSO BE POSSIBLE. THE RISK OF STRONGER STORMS WILL END BY MIDNIGHT. A WEAKENING COLD FRONT WILL SLOWLY MOVE INTO THE FORECAST AREA TONIGHT AND WILL DRIFT ACROSS THE AREA DURING THE DAY WEDNESDAY. .DAYS TWO THROUGH SEVEN...WEDNESDAY NIGHT THROUGH MONDAY 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 MONDAY. MSZ030-031-033-038-039-044>046-050>052-055>058-063>066-072>074- 052030- CLAY-LOWNDES-OKTIBBEHA-WINSTON-NOXUBEE-LEAKE-NESHOBA-KEMPER-SCOTT- NEWTON-LAUDERDALE-SIMPSON-SMITH-JASPER-CLARKE-LAWRENCE- JEFFERSON DAVIS-COVINGTON-JONES-MARION-LAMAR-FORREST- 226 PM CST TUE DEC 4 2012 THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL MISSISSIPPI... NORTHEAST LOUISIANA...AND EXTREME SOUTHEAST ARKANSAS. .DAY ONE...TONIGHT AND WEDNESDAY A FEW STRONG THUNDERSTORMS WILL BE POSSIBLE THIS AFTERNOON AND EVENING. THEY WILL HAVE THE POTENTIAL FOR WIND GUSTS OF 40 MPH AND SMALL HAIL ALONG WITH FREQUENT LIGHTNING STRIKES AND PERIODS OF HEAVIER RAIN. THE RISK OF STRONG STORMS WILL END BY MIDNIGHT. A WEAKENING COLD FRONT WILL SLOWLY MOVE INTO THE FORECAST AREA TONIGHT AND WILL DRIFT ACROSS THE AREA DURING THE DAY WEDNESDAY. .DAYS TWO THROUGH SEVEN...WEDNESDAY NIGHT THROUGH MONDAY 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 MONDAY. FOR MORE INFORMATION PLEASE VISIT OUR WEBSITE AT WWW.SRH.NOAA.GOV/JAN. 03
In the hours before
Special weather statement, Dec 4, 2:39 PM CST, 0 minutes before
MSZ026-042125-
GRENADA MS-
239 PM CST TUE DEC 4 2012
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSON MS
239 PM CST TUE DEC 4 2012
A STRONG THUNDERSTORM CAPABLE OF PRODUCING PEA TO DIME SIZE HAIL WAS
LOCATED OVER BEW SPRINGS AT 239 PM CST...MOVING NORTHEAST AT 30 MPH.
VERY HEAVY RAIN IS ALSO POSSIBLE WITH THIS STORM.
PEOPLE IN GRENADA COUNTY SHOULD MONITOR THIS STORM CLOSELY.
LAT...LON 3389 8976 3387 8976 3387 8951 3386 8950
3374 8950 3370 8958 3369 9005 3381 8999
3383 8995 3383 8994 3384 8993 3391 8979
TIME...MOT...LOC 2039Z 245DEG 26KT 3377 8985The office that day
Everything else NWS Jackson, MS issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 4, 3:11 PM CST | Flash Flood Warning | JAN | Carroll, Grenada | 103 min |
| Dec 4, 3:18 PM CST | Special Weather Statement | JAN | Washington | 32 min |
| Dec 4, 3:20 PM CST | Special Weather Statement | JAN | Issaquena | 45 min |
| Dec 4, 3:36 PM CST | Special Weather Statement | JAN | Leflore | 29 min |
| Dec 4, 4:24 PM CST | Special Weather Statement | JAN | Carroll | 46 min |
| Dec 4, 4:26 PM CST | Special Weather Statement | JAN | Washington | 44 min |
| Dec 4, 3:02 PM CST | Special Weather Statement | JAN | West Carroll | 43 min |
| Dec 4, 4:20 PM CST | Special Weather Statement | JAN | West Carroll | 30 min |
Nearby
Special Weather Statements in Mississippi, 2012Every 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.