A cold front generated line of thunderstorms of which a few were marginally severe on the early morning of February 7th.
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Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS MEG wrote it up.
A cold front generated line of thunderstorms of which a few were marginally severe on the early morning of February 7th.
The local office's own words before the first event, 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 the first event at Feb 6, 11:41 PM CST, 1 hour 54 minutes earlier.
Area Forecast Discussion National Weather Service Memphis TN 1141 PM CST Mon Feb 6 2017 .UPDATE... Updated to add 06Z Aviation Discussion. && .PREV DISCUSSION... /issued 746 PM CST Mon Feb 6 2017/ UPDATE... A potent shortwave trough is approaching the region from the west this evening. This will help precondition the atmosphere for potential severe weather as mid-level lapse rates steepen significantly. There is a cap in place at this time, but deep boundary layer moisture and a strong SSW low-level jet will aid in the development of elevated convection during the overnight hours. With storms rooted above the boundary layer, the damaging wind potential will be relatively low through the early morning hours, with the primary hazard being large hail. Wind may become a bit more of a threat by mid/late morning as low-level lapse rates improve. Convective coverage will be minimal this evening, but should begin to increase around midnight. The greatest potential for strong to severe thunderstorms will be between 4 AM and noon. Most of the convection is expected to move east of the CWA after noon. The cold front will still be north of the area tomorrow afternoon but is expected to move south into the CWA during the evening hours. Additional showers and/or thunderstorms may develop along this boundary late Tuesday night into Wednesday. Minor changes were made to PoP, wind, and sky grids. The most notable change to the forecast was to add the potential for severe weather late tonight and Tuesday morning. Johnson PREV DISCUSSION... /issued 245 PM CST Mon Feb 6 2017/ DISCUSSION... Currently...A secondary warm front is pushing through the Mid- South and at 19z was located across the northern tier of counties. This will move well north of the area over the next few hours. Warm air is flowing into the region behind the front and temps have climbed into the lower 70s from Memphis southward. Dewpoints are around 60 south of the front as well. There are a few breaks south of the front which is helping that mercury rise. Not much in the way of shower activity which is not a surprise given the strengthening cap and lack of a trigger at the moment. Tonight and Tuesday...This evening should be relatively quiet then a broad low amplitude trough will push across the southern plains and by midnight be entering western Arkansas. Surface low pressure will develop over the plains and push into northern Missouri by midnight with a cold front trailing SW into Oklahoma. The LLJ will increase across the Mississippi Valley to 45-50 kts while mid level heights falls increase ahead of the trough. A belt of 45-50 kts of 0-6km bulk shear will also move into the region. The boundary layer will continue to moisten as the LLJ increases. Expect scattered to numerous showers and thunderstorms to break out over Eastern Arkansas spreading east through morning. Storms will be mostly elevated. Very steep mid level lapse rates of over 8 C/KM point to large hail being the main threat overnight. Through 12z Tuesday there is a slight risk of severe storms over NW TN...the Missouri Bootheel and East AR. The upper trough will move to near the MS River by 15z and then out of the area between 18z-21z Tuesday. As a result the risk for severe storms will shift east of the Mississippi River Tuesday morning. The mid level trough leaves the cold front behind. The round of mainly elevated storms in the morning with a mainly large hail threat will continue across West Tennessee and North Mississippi Tuesday morning. If some of these storms can become surface based as the airmass destabilizes ahead of the cold front and before the mid level trough and its associated lift move too far east then some damaging wind gusts are also possible with the morning activity. The 12z model guidance is suggesting little if any redevelopment along the cold front...despite SBCAPES values over 2000 J/KG...which will push into the Mid-South late in the afternoon and early evening. The surface low is well removed to the NE and the wind fields are weakening at this point with little convergence and lift along the front. Expect temps to jump into the mid 70s as the precip clears out and before the front moves in across the Delta Tuesday afternoon. Tuesday night and Wednesday night...The cold front stalls across the Mid-South...invof the I-40 corridor...as it becomes parallel to the upper flow. Should be a mostly quiet night aside from a small chance for showers and thunderstorms along the TN River...mainly early in the period. Weak upper level disturbances moving through the quick zonal flow aloft could trigger some showers and thunderstorms along the stalled cold front on Wednesday. This is depicted nicely by the NAM. By Wednesday afternoon and evening a more significant short wave will start to push the stalled front southeast. It will interact with the moist and somewhat unstable airmass across north Mississippi. Would not be surprised to see a few strong storms Wednesday afternoon into Wednesday evening across Northeast Mississippi. The front will move south of the region overnight and precip chances will come to an end as much cooler air filters into the region. Lows by Thursday morning will be in the 30s with a brisk north wind as winter briefly returns. Thursday and Thursday night...This will be our one day of winter this week as cool high pressure builds in and temps remain mainly in the 40s. Clear skies and diminishing winds will result in most places dropping below freezing by Friday morning. Friday...Warming trend begin as high pressure shifts east...southerly winds develop and sunshine prevails. Saturday through Monday...Mild and increasingly moist airmass on tap for the weekend. Saturday will feature weak overrunning with cloudy skies...mild temps and a few light showers. A cold front will push through Sunday afternoon into Sunday night with better chances of rain followed by cooler...though not cold...temps for Monday. SJM && .AVIATION... 06Z TAFs Showers and thunderstorms have developed in the past hour over Western Arkansas. This activity will begin to spread into the area overnight into Tuesday morning affecting JBR between 7-10Z, MEM 9-13Z, MKL 12-15Z and late morning at TUP. Kept LLWS in forecast at MEM,MKL,JBR as 2000 ft winds are expected to increase to 55-60 kts. VFR conditions expected to deteriorate to MVFR/IFR conditions overnight into Tuesday morning and improve to VFR conditions Tuesday afternoon/night. Gusty south/southwest winds will become light by Tuesday evening. CJC && .MEG WATCHES/WARNINGS/ADVISORIES... AR...None. MO...None. MS...None. TN...None. &&
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE MEMPHIS TN 1100 PM CST MON FEB 6 2017 ARZ008-009-017-018-026>028-035-036-048-049-058-MOZ113-115- MSZ001>017-020>024-TNZ001>004-019>022-048>055-088>092-071200- ALCORN-BENTON MS-BENTON TN-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- 1100 PM CST MON FEB 6 2017 THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF EAST ARKANSAS... THE MISSOURI BOOTHEEL...NORTH MISSISSIPPI...AND WEST TENNESSEE. .DAY ONE...TONIGHT THERE IS A SLIGHT RISK FOR SEVERE THUNDERSTORMS ACROSS EASTERN ARKANSAS...THE MISSOURI BOOTHEEL AND NORTHWEST TENNESSEE DURING THE EARLY MORNING HOURS. SOME STORMS MAY BECOME SEVERE WITH LARGE HAIL BEING THE PRIMARY HAZARD. A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL 5 AM FOR MUCH OF NORTHEAST ARKANSAS AND THE MISSOURI BOOTHEEL. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY THERE IS SLIGHT RISK FOR SEVERE THUNDERSTORMS ALONG AND EAST OF THE MISSISSIPPI RIVER TUESDAY MORNING. NUMEROUS SHOWERS AND THUNDERSTORMS ARE EXPECTED ALONG AND EAST OF THE MISSISSIPPI RIVER TUESDAY MORNING. A FEW OF THE STORMS MAY BECOME SEVERE. LARGE HAIL WILL BE THE MAIN THREAT WITH DAMAGING WINDS BEING A SECONDARY THREAT. A FEW STRONG STORMS ARE POSSIBLE ACROSS NORTH MISSISSIPPI WEDNESDAY AFTERNOON INTO WEDNESDAY EVENING. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE REQUIRED LATE TONIGHT INTO TUESDAY MORNING.
The Memphis radar (KNQA), 38 km away, was scanning. The volume nearest the first event began at 07:34 UTC.
2 hail, 1 thunderstorm wind. Local standard time, as filed.
Flag pole down at penitentiary.
Nickel size hail near Highway 14 and 206.
Penny size hail in southern Gibson County.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Tennessee in 2017Every state in 2017This day in weather historyWarnings in Tennessee, February 2017
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 678182, 678184, 678183.