Alert archive / Tennessee / Special Weather Statements in 2012
Special Weather Statement, NWS Nashville, TN
NWS Nashville, TN issued this special weather statement at May 5, 2012, 5:28 AM CDT for 27 counties in Tennessee. It was in force for 62 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
- May 5, 2012, 5:28 AM CDT (10:28 UTC)
- Expired
- May 5, 2012, 6:30 AM CDT
- In force
- 62 min
- Issued by
- NWS Nashville, TN
All 27 counties
Benton County, TN, Cannon County, TN, Cheatham County, TN, Clay County, TN, Cumberland County, TN, Davidson County, TN, DeKalb County, TN, Dickson County, TN, Fentress County, TN, Hickman County, TN, Houston County, TN, Humphreys County, TN, Jackson County, TN, Macon County, TN, Montgomery County, TN, Overton County, TN, Pickett County, TN, Putnam County, TN, Robertson County, TN, Rutherford County, TN, Smith County, TN, Stewart County, TN, Sumner County, TN, Trousdale County, TN, White County, TN, Williamson County, TN, Wilson County, TN
The radar
The Nashville radar (KOHX), 26 km from the middle of the area, began a volume at 10:28 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
Nashville Metro, TN (KBNA), launched 00:00Z, 10.5 hours before the alert went out and 22 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
- 1078 J/kg
- Mixed-layer CIN
- -70 J/kg
- Mixed-layer LCL
- 1542 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- 2 m²/s²
- 0-3 km storm-relative helicity
- 111 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 1.6
The text
As transmitted, in the capitals the NWS used until 2016.
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</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 Nashville, TN wrote its last area forecast discussion before this special weather statement went out at May 5, 4:16 AM CDT, 1 hour 12 minutes earlier.
Area forecast discussion, May 5, 4:16 AM CDT, 1 hour 12 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE NASHVILLE TN 416 AM CDT SAT MAY 5 2012 .DISCUSSION... FRONTAL BOUNDARY ACROSS THE OH VALLEY SINKING SLOWLY SOUTH...WITH PRETTY HEALTHY LEWP AHEAD DROPPING SOUTHEAST IN NORTHWEST ML FLOW. THIS TREND EXPECTED TO CONTINUE INTO THE LATE MORNING...WITH STRONG/SEVERE STORMS CLIPPING THE EXTREME NORTH AND EAST COUNTIES EARLY THIS MORNING. LINE THEN EXPECTED TO WEAKEN SOME 12-18Z...BECOMING MORE SCT IN NATURE THIS AFTERNOON. AIRMASS REMAINS PLENTY UNSTABLE AND ISO SEVERE STILL IN THE EQUATION LATER TODAY. BEST CHANCE REMAINS ACROSS THE NORTH AND EAST. THIS TREND HOLDS INTO THE FIRST PART OF NEXT WEEK AS RIDGES ACROSS THE REGION REMAIN DIRTY...WITH SERIES OF PASSING IMPULSES. THIS COMBINED WITH WEAK SFC VICINITY BOUNDARY AND UNSTABLE AIR WILL KEEP ISO-SCT TSTMS GOING THRU 12Z MON. LATER MON...THINGS BECOME LITTLE BETTER ORGANIZED AS COLD FRONT DROPS INTO THE MS RIVER VALLEY AS SFC LOW CROSSES THE MIDWEST. THIS WILL INCREASE LL FORCING AS WELL AS MOISTURE ADVECTION AHEAD ALLOWING STORMS TO BECOME MORE WIDESPREAD ACROSS THE NORTH/WEST. ML/UL FLOW NOT ESPECIALLY STRONG THUS COLD FRONT WILL BE SLOW TO MOVE ACROSS THE MID-STATE. COLD FRONT LOOKS TO MOVE INTO THE CWA AROUND 12Z TUE...THEN TAKE MOST OF THE DAY TO PUSH EAST. THIS WILL KEEP SHWRS/STMS QUITE WIDESPREAD MON NIGHT THRU TUE. SHWRS/STORMS DECREASE DRASTICALLY TUE NIGHT BEHIND FRONT...BUT PASSING ML/UL TROUGH AXIS POSSIBLY SETTING OFF A FEW SHOWERS NORTHEAST ON WED. BEHIND FRONT AND UPPER TROUGHS...DRY AND COOLER WEATHER EXPECTED TO RETURN WED NIGHT WHICH AT THIS POINT LOOKS TO HOLD INTO THE FIRST PART OF THE WEEKEND. && .PRELIMINARY POINT TEMPS/POPS... NASHVILLE 89 68 88 69 / 40 20 30 30 CLARKSVILLE 89 66 88 67 / 30 20 30 30 CROSSVILLE 84 61 83 63 / 50 20 20 30 COLUMBIA 90 67 88 68 / 30 20 30 30 LAWRENCEBURG 90 67 88 66 / 20 20 30 40 WAVERLY 90 66 88 67 / 30 20 30 30 && .OHX WATCHES/WARNINGS/ADVISORIES... NONE. && 07
Hazardous weather outlook, May 5, 5:24 AM CDT, 4 minutes before
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</html>In the hours before
Special weather statement, May 5, 4:07 AM CDT, 1 hour 21 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE NASHVILLE TN
407 AM CDT SAT MAY 5 2012
TNZ005>011-023-025>034-051000-
CHEATHAM-CLAY-DAVIDSON-DICKSON-FENTRESS-HOUSTON-JACKSON-MACON-
MONTGOMERY-OVERTON-PICKETT-PUTNAM-ROBERTSON-SMITH-STEWART-SUMNER-
TROUSDALE-WILSON-
407 AM CDT SAT MAY 5 2012
...SIGNIFICANT WEATHER ADVISORY FOR CHEATHAM...CLAY...DAVIDSON...
DICKSON...FENTRESS...HOUSTON...JACKSON...MACON...MONTGOMERY...
OVERTON...PICKETT...PUTNAM...ROBERTSON...SMITH...STEWART...SUMNER...
TROUSDALE AND WILSON COUNTIES...
AT 402 AM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS ARE TRACKING
A LINE OF STRONG TO SEVERE THUNDERSTORMS CURRENTLY ALIGNED WEST TO
EAST ACROSS SOUTHERN KENTUCKY. A GUST FRONT HAS PUSHED AHEAD OF THE
MAIN LINE OF STORMS AND WILL BEGIN AFFECTING THE NORTHERN TIER OF
COUNTIES OF ROBERTSON AND SUMNER AROUND 5 AM CDT.
WINDS 40 TO 50 MPH ARE EXPECTED.
LAT...LON 3629 8479 3629 8487 3615 8491 3617 8503
3613 8513 3624 8774 3664 8773 3661 8479
3641 8466
BOYDSpecial weather statement, May 5, 5:28 AM CDT, 0 minutes before
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</html>The office that day
Everything else NWS Nashville, TN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 5, 4:07 AM CDT | Special Weather Statement | OHX | Cheatham, Clay, Fentress, Houston, Jackson, Macon and 7 more | 53 min |
| May 5, 4:39 AM CDT | Tornado Warning | OHX | Clay, Overton, Pickett | 36 min |
| May 5, 5:12 AM CDT | Severe Thunderstorm Warning | OHX | Fentress | 33 min |
| May 5, 7:59 AM CDT | Special Weather Statement | OHX | Marshall, Maury | 61 min |
Nearby
Special Weather Statements in Tennessee, 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.