Alert archive / Tennessee / Special Weather Statements in 2013
Special Weather Statement, NWS Memphis, TN
NWS Memphis, TN issued this special weather statement at Mar 18, 2013, 12:44 PM CDT for McNairy County, Tennessee. 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
- Mar 18, 2013, 12:44 PM CDT (17:44 UTC)
- Expired
- Mar 18, 2013, 1:30 PM CDT
- In force
- 46 min
- Issued by
- NWS Memphis, TN
County McNairy County, TN
The radar
The Memphis radar (KNQA), 118 km from the middle of the area, began a volume at 17:47 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 12:00Z, 5.7 hours before the alert went out and 126 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
- 11 J/kg
- Mixed-layer CIN
- -390 J/kg
- Mixed-layer LCL
- 432 m above ground
- 0-6 km bulk shear
- 54 kt
- 0-1 km storm-relative helicity
- 227 m²/s²
- 0-3 km storm-relative helicity
- 210 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.2
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 Memphis, TN wrote its last area forecast discussion before this special weather statement went out at Mar 18, 11:31 AM CDT, 1 hour 13 minutes earlier.
Area forecast discussion, Mar 18, 11:31 AM CDT, 1 hour 13 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE MEMPHIS TN 1131 AM CDT MON MAR 18 2013 .UPDATE... UPDATED TO READJUST POPS AND EXTEND SEVERE THUNDERSTORM WATCH. && .DISCUSSION... A SLOW MOVING COLD FRONT REMAINS STRETCHED ACROSS NORTHERN MISSISSIPPI LATE THIS MORNING. A POTENT MID LEVEL SHORTWAVE WAS EJECTING INTO THE AREA FROM THE WEST AND HAS ALLOWED FOR UPSCALE GROWTH OF THUNDERSTORMS OVER PARTS OF EASTERN ARKANSAS INTO NORTHWEST TENNESSEE. THESE STORMS CURRENTLY REMAIN ELEVATED ABOVE THE SURFACE FRONTAL BOUNDARY AND HAVE POSED A LARGE HAIL THREAT. THIS LARGE HAIL THREAT WILL CONTINUE TO THE NORTH OF THE FRONTAL BOUNDARY. FURTHER SOUTH...THE AIRMASS CONTINUES TO DESTABLIZE TO THE SOUTH OF THE BOUNDARY AS TEMPERATURES CONTINUE TO APPROACH 70 DEGREES AND DEWPOINTS PUSH INTO THE LOWER 60S. THIS AREA SHOULD CONTINUE TO DESTABLIZE WITH MUCAPES APPROACHING 1000 J/KG AND MID LEVEL LAPSE RATES GREATER THAN 7.5 C/KM THROUGH THE AFTERNOON. THIS MAY ALLOW STORMS TO BECOME MORE SURFACE BASED ACROSS THE WARM SECTOR WITH A INCREASING THREAT FOR DAMAGING WINDS AND LARGE HAIL. ALSO HAVE ADJUSTED POPS TO THE EVOLVING SITUATION WITH THE GREATEST POPS OVER SOUTHERN SECTIONS. THE GRIDS...ZONES...AND HAZARDOUS WEATHER OUTLOOK HAVE BEEN UPDATED AND SENT. JLH && .PREV DISCUSSION... /ISSUED 509 AM CDT MON MAR 18 2013/ DISCUSSION... THUNDERSTORMS CONTINUED FROM CENTRAL AR INTO NORTHWEST TN AT 5 AM... ROUGHLY ALONG AND NORTH OF I40. THESE STORMS WERE ROOTED IN AN ELEVATED LAYER...ON THE COOL SIDE OF A SURFACE COLD FRONT. FOR THIS AFTERNOON... NAM SOUNDINGS SHOW WARM SECTOR MUCAPES IN EXCESS OF 1000 J/KG... ACCOMPANIED BY MIDLEVEL LAPSE RATES NEAR 7 C/KM OVER NORTHEAST MS. WEAK CONVECTIVE INHIBITION SHOULD BE OVERCOME WITH THE APPROACH OF A MIDLEVEL TROF AXIS... SUPPORTIVE OF A SLIGHT RISK OF SEVERE. POST FRONTAL SHOWERS SHOULD EXIT THE TN RIVER VALLEY THIS EVENING... AS A DRY MIDCONTINENTAL SURFACE HIGH SETTLES IN FOR TUESDAY AND WEDNESDAY. SIMILAR TO THE PAST SEVERAL DAYS...EXTENDED PERIOD MODEL CONSENSUS BETWEEN THE GFS AND ECMWF REMAINS LOWER THAN NORMAL. BOTH MODELS POINT TOWARD A RELATIVELY ACTIVE SOUTHERN BRANCH...BUT DIFFER IN TIMING OF INDIVIDUAL SYSTEMS AND AMOUNT OF LOW LEVEL COLD AIR INTRUSION FROM THE OHIO VALLEY. FOR THE EXTENDED PERIODS...HAVE CHOSEN TO SPLIT THE DIFFERENCE BETWEEN THE MILD GFS AND COOLER ECMWF...WHILE ADDING SOME WEIGHT TO PERSISTENCE. HAVE KEPT POPS AT OR BELOW CHANCE CATEGORY WHERE MODEL CONSENSUS WAS LACKING. PWB && .AVIATION... 12Z TAF CYCLE A QUASI-STATIONARY BOUNDARY LOCATED FROM PARIS TN TO MEMPHIS WILL GRADUALLY MOVE EAST/SOUTHEAST TODAY AS AN UPPER LEVEL TROUGH MOVES THIS BOUNDARY AS A COLD FRONT ACROSS THE LOWER MISSISSIPPI VALLEY. SHOWERS AND THUNDERSTORMS ARE EXPECTED THIS MORNING AT ALL SITES...WITH BEST CHANCES SHIFTING TO TUP WHERE BEST INSTABILITY AND LIFT WILL RESIDE LATER THIS MORNING INTO THE AFTERNOON. MVFR CONDITIONS EXPECTED TO PREVAIL THROUGH AT LEAST MID AFTERNOON WITH IMPROVEMENT TO VFR CONDITIONS BY LATE AFTERNOON INTO TONIGHT. SOUTHWEST WINDS BETWEEN 8-12KTS WITH OCCASIONAL GUSTS UP TO 20 KTS WILL GRADUALLY VEER NORTHWEST AND DIMINISH TO 6 KTS OR LESS BEHIND THE FRONT BY TONIGHT. CJC && .PRELIMINARY POINT TEMPS/POPS... MEM 53 41 61 42 / 80 10 0 0 MKL 54 34 58 35 / 80 10 0 0 JBR 52 35 58 38 / 10 0 0 0 TUP 71 39 65 38 / 90 20 0 0 && .MEG WATCHES/WARNINGS/ADVISORIES... AR...NONE. MO...NONE. MS...NONE. TN...NONE. &&
Hazardous weather outlook, Mar 18, 9:56 AM CDT, 2 hours 48 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE MEMPHIS TN 956 AM CDT MON MAR 18 2013 ARZ008-009-017-018-026>028-035-036-048-049-058-MOZ113-115- MSZ001>017-020>024-TNZ001>004-019>021-048>055-088>092-191700- ALCORN-BENTON MS-CALHOUN-CARROLL-CHESTER-CHICKASAW-CLAY-COAHOMA- CRAIGHEAD-CRITTENDEN-CROCKETT-CROSS-DESOTO-DECATUR-DUNKLIN-DYER- FAYETTE-GIBSON-GREENE-HARDEMAN-HARDIN-HAYWOOD-HENDERSON-HENRY- ITAWAMBA-LAFAYETTE-LAKE-LAUDERDALE-LAWRENCE-LEE AR-LEE MS-MADISON- MARSHALL-MCNAIRY-MISSISSIPPI-MONROE-OBION-PANOLA-PEMISCOT- PHILLIPS-POINSETT-PONTOTOC-PRENTISS-QUITMAN-RANDOLPH-SHELBY- ST. FRANCIS-TALLAHATCHIE-TATE-TIPPAH-TIPTON-TISHOMINGO-TUNICA- UNION-WEAKLEY-YALOBUSHA- 956 AM CDT MON MAR 18 2013 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF EAST ARKANSAS... THE MISSOURI BOOTHEEL...NORTH MISSISSIPPI...AND WEST TENNESSEE. .DAY ONE...TODAY AND TONIGHT THERE IS A SLIGHT RISK FOR SEVERE THUNDERSTORMS ACROSS PORTIONS OF WEST TENNESSEE NEAR THE TENNESSEE RIVER AND MUCH OF NORTHERN MISSISSIPPI. LARGE HAIL AND DAMAGING WINDS REMAIN THE PRIMARY SEVERE WEATHER THREATS. THE SEVERE WEATHER THREAT WILL COME TO AN END THIS EVENING AS A COLD FRONT MOVES EAST OF THE FORECAST AREA. STRONG STORMS WITH SMALL HAIL WILL BE POSSIBLE FURTHER NORTH ACROSS THE REMAINDER OF THE MID SOUTH. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL BE NEEDED TODAY ACROSS THE SLIGHT RISK AREA. PLEASE REPORT ANY LARGE HAIL OR WIND DAMAGE TO THE NATIONAL WEATHER SERVICE OFFICE IN MEMPHIS TENNESSEE. JLH
In the hours before
Special weather statement, Mar 18, 11:04 AM CDT, 1 hour 40 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MEMPHIS TN
1104 AM CDT MON MAR 18 2013
ARZ036-MSZ001-TNZ088-181630-
CRITTENDEN AR-DE SOTO MS-SHELBY TN-
1104 AM CDT MON MAR 18 2013
...THE NATIONAL WEATHER SERVICE IN MEMPHIS HAS ISSUED A SIGNIFICANT
WEATHER ADVISORY UNTIL 1130 AM CDT FOR...
SOUTHERN CRITTENDEN COUNTY IN EASTERN ARKANSAS...
NORTHERN DESOTO COUNTY IN NORTHWEST MISSISSIPPI...
SOUTHWESTERN SHELBY COUNTY IN SOUTHWEST TENNESSEE...
A STRONG THUNDERSTORM PRODUCING PEA SIZE HAIL OR LARGER WAS LOCATED 4
MILES NORTHEAST OF PINCKNEY AT 1105 AM CDT...MOVING EAST AT 40 MPH.
VERY HEAVY RAIN ALONG WITH CONTINUOUS CLOUD TO GROUND LIGHTNING WILL
OCCUR WITH THIS THUNDERSTORM.
PEOPLE IN CRITTENDEN...DESOTO AND SHELBY COUNTIES...INCLUDING
LOCATIONS NEAR BARTLETT...GERMANTOWN...HORN LAKE...MIDTOWN MEMPHIS...
SOUTHAVEN AND T O FULLER STATE PARK...SHOULD MONITOR THIS STORM
CLOSELY.
&&
LAT...LON 3524 8984 3499 8974 3489 9036 3500 9041
3506 9040
TIME...MOT...LOC 1605Z 252DEG 37KT 3501 9023Special weather statement, Mar 18, 11:39 AM CDT, 1 hour 5 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MEMPHIS TN 1139 AM CDT MON MAR 18 2013 TNZ049-088-089-181715- SHELBY TN-FAYETTE TN-TIPTON TN- 1139 AM CDT MON MAR 18 2013 ...THE NATIONAL WEATHER SERVICE IN MEMPHIS HAS ISSUED A SIGNIFICANT WEATHER ADVISORY UNTIL 1215 PM CDT FOR... NORTHWESTERN FAYETTE COUNTY IN SOUTHWEST TENNESSEE... NORTHEASTERN SHELBY COUNTY IN SOUTHWEST TENNESSEE... SOUTH CENTRAL TIPTON COUNTY IN SOUTHWEST TENNESSEE... A STRONG THUNDERSTORM PRODUCING PEA SIZE HAIL OR LARGER WAS LOCATED 5 MILES SOUTHWEST OF MILLINGTON AT 1140 AM CDT...MOVING EAST AT 45 MPH. VERY HEAVY RAIN ALONG WITH CONTINUOUS CLOUD TO GROUND LIGHTNING WILL OCCUR WITH THIS THUNDERSTORM. PEOPLE IN FAYETTE...SHELBY AND TIPTON COUNTIES...INCLUDING LOCATIONS NEAR BARTLETT AND MILLINGTON...SHOULD MONITOR THIS STORM CLOSELY. && LAT...LON 3549 8955 3523 8954 3520 9001 3535 9004 TIME...MOT...LOC 1640Z 260DEG 37KT 3529 8990
Special weather statement, Mar 18, 11:42 AM CDT, 1 hour 2 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MEMPHIS TN 1142 AM CDT MON MAR 18 2013 MSZ001-002-TNZ088-089-181715- MARSHALL MS-DE SOTO MS-SHELBY TN-FAYETTE TN- 1142 AM CDT MON MAR 18 2013 ...THE NATIONAL WEATHER SERVICE IN MEMPHIS HAS ISSUED A SIGNIFICANT WEATHER ADVISORY UNTIL 1215 PM CDT FOR... EASTERN DESOTO COUNTY IN NORTHWEST MISSISSIPPI... NORTHWESTERN MARSHALL COUNTY IN NORTHWEST MISSISSIPPI... SOUTHWESTERN FAYETTE COUNTY IN SOUTHWEST TENNESSEE... SOUTHEASTERN SHELBY COUNTY IN SOUTHWEST TENNESSEE... A STRONG THUNDERSTORM PRODUCING PEA SIZE HAIL OR LARGER WAS LOCATED 6 MILES SOUTHWEST OF OLIVE BRANCH AT 1142 AM CDT...MOVING EAST AT 45 MPH. VERY HEAVY RAIN ALONG WITH CONTINUOUS CLOUD TO GROUND LIGHTNING WILL OCCUR WITH THIS THUNDERSTORM. PEOPLE IN DESOTO...FAYETTE...MARSHALL AND SHELBY COUNTIES...INCLUDING LOCATIONS NEAR COLLIERVILLE...HERNANDO...HORN LAKE...OLIVE BRANCH AND SOUTHAVEN...SHOULD MONITOR THIS STORM CLOSELY. && LAT...LON 3509 8959 3479 8955 3477 8998 3500 9005 TIME...MOT...LOC 1642Z 255DEG 38KT 3491 8990
Special weather statement, Mar 18, 12:03 PM CDT, 41 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MEMPHIS TN
1203 PM CDT MON MAR 18 2013
MSZ002-003-TNZ089-090-181730-
BENTON MS-MARSHALL MS-FAYETTE TN-HARDEMAN TN-
1203 PM CDT MON MAR 18 2013
...THE NATIONAL WEATHER SERVICE IN MEMPHIS HAS ISSUED A SIGNIFICANT
WEATHER ADVISORY UNTIL 1230 PM CDT FOR...
NORTHERN BENTON COUNTY IN NORTHEAST MISSISSIPPI...
NORTH CENTRAL MARSHALL COUNTY IN NORTHWEST MISSISSIPPI...
SOUTHEASTERN FAYETTE COUNTY IN SOUTHWEST TENNESSEE...
SOUTHWESTERN HARDEMAN COUNTY IN SOUTHWEST TENNESSEE...
A STRONG THUNDERSTORM PRODUCING PEA SIZE HAIL OR LARGER WAS LOCATED
OVER MT PLEASANT AT 1203 PM CDT...MOVING EAST AT 50 MPH.
VERY HEAVY RAIN ALONG WITH CONTINUOUS CLOUD TO GROUND LIGHTNING WILL
OCCUR WITH THIS THUNDERSTORM.
PEOPLE IN BENTON...FAYETTE...HARDEMAN AND MARSHALL COUNTIES SHOULD
MONITOR THIS STORM CLOSELY.
&&
LAT...LON 3481 8956 3500 8962 3516 8909 3490 8901
3489 8902
TIME...MOT...LOC 1703Z 256DEG 50KT 3493 8947Special weather statement, Mar 18, 12:34 PM CDT, 10 minutes 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>Special weather statement, Mar 18, 12:44 PM CDT, 0 minutes 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>The office that day
Everything else NWS Memphis, TN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 18, 8:18 AM CDT | Special Weather Statement | MEG | Hardeman | 27 min |
| Mar 18, 8:34 AM CDT | River Flood Warning | MEG | Crockett, Dyer, Lauderdale | 51 hr |
| Mar 18, 9:05 AM CDT | Special Weather Statement | MEG | Hardin | 40 min |
| Mar 18, 9:21 AM CDT | Special Weather Statement | MEG | Shelby | 24 min |
| Mar 18, 9:47 AM CDT | Special Weather Statement | MEG | Fayette | 28 min |
| Mar 18, 11:04 AM CDT | Special Weather Statement | MEG | Shelby | 26 min |
| Mar 18, 11:39 AM CDT | Special Weather Statement | MEG | Tipton | 36 min |
| Mar 17, 10:56 PM CDT | Special Weather Statement | MEG | Coahoma | 34 min |
| Mar 18, 10:24 AM CDT | Special Weather Statement | MEG | Itawamba, Lee | 36 min |
| Mar 18, 10:42 AM CDT | Severe Thunderstorm Warning | MEG | Tunica | 48 min |
| Mar 18, 11:10 AM CDT | Severe Thunderstorm Warning | MEG | DeSoto, Tate, Tunica | 50 min |
| Mar 18, 11:42 AM CDT | Special Weather Statement | MEG | DeSoto | 33 min |
| Mar 18, 12:03 PM CDT | Special Weather Statement | MEG | Benton | 27 min |
| Mar 18, 12:34 PM CDT | Special Weather Statement | MEG | Itawamba | 41 min |
| Mar 18, 1:06 PM CDT | Special Weather Statement | MEG | Calhoun, Chickasaw, Lee, Pontotoc | 24 min |
| Mar 18, 1:14 PM CDT | Severe Thunderstorm Warning | MEG | Calhoun, Chickasaw, Itawamba, Lee, Monroe, Pontotoc | 46 min |
| Mar 18, 1:17 PM CDT | Severe Thunderstorm Warning | MEG | Alcorn, Itawamba, Lee, Pontotoc, Prentiss, Tishomingo and 1 more | 43 min |
| Mar 18, 1:23 PM CDT | Severe Thunderstorm Warning | MEG | Itawamba | 37 min |
| Mar 18, 1:36 PM CDT | Severe Thunderstorm Warning | MEG | Chickasaw, Itawamba, Lee, Monroe | 39 min |
| Mar 18, 2:37 AM CDT | Special Weather Statement | MEG | Crittenden | 23 min |
| Mar 18, 8:14 AM CDT | Special Weather Statement | MEG | St. Francis | 31 min |
| Mar 18, 8:57 AM CDT | Special Weather Statement | MEG | Crittenden | 33 min |
| Mar 18, 9:27 AM CDT | Special Weather Statement | MEG | Crittenden | 33 min |
| Mar 18, 10:07 AM CDT | Special Weather Statement | MEG | Lee, St. Francis | 23 min |
| Mar 18, 10:21 AM CDT | Severe Thunderstorm Warning | MEG | Lee | 24 min |
Nearby
Special Weather Statements in Tennessee, 2013Every special weather statement in 2013
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.