Alert archive / Alabama / Special Weather Statements in 2011

Special Weather Statement, NWS Birmingham, AL

July 4, 2011Blount County, Alabama

NWS Birmingham, AL issued this special weather statement at Jul 4, 2011, 4:13 PM CDT for Blount County, Alabama. It was in force for 47 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 4, 2011, 4:13 PM CDT (21:13 UTC)
Expired: Jul 4, 2011, 5:00 PM CDT
In force: 47 min
Issued by: NWS Birmingham, AL

County Blount County, AL

The radar

The Northeast Alabama radar (KHTX), 92 km from the middle of the area, began a volume at 21:13 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

Birmingham, AL (KBMX), launched 12:00Z, 9.2 hours before the alert went out and 113 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: 2435 J/kg
Mixed-layer CIN: -46 J/kg
Mixed-layer LCL: 821 m above ground
0-6 km bulk shear: 10 kt
0-1 km storm-relative helicity: -37 m²/s²
0-3 km storm-relative helicity: -27 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

820 
WWUS84 KBMX 042113
SPSBMX

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
413 PM CDT MON JUL 4 2011

ALZ017-042200-
BLOUNT AL-
413 PM CDT MON JUL 4 2011

...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN BLOUNT COUNTY UNTIL
500 PM CDT...

AT 409 PM CDT...THE NATIONAL WEATHER SERVICE WAS TRACKING STRONG
THUNDERSTORMS ALONG A LINE EXTENDING FROM ARAB TO ROSA...AND MOVING
EAST AT 15 MPH.

PEA SIZE HAIL AND WIND GUSTS UP TO 40 MPH ARE EXPECTED WITH THESE
STORMS...ALONG WITH HEAVY RAIN AND FREQUENT DANGEROUS LIGHTNING.

LOCATIONS IN OR NEAR THE PATH OF THESE STORMS INCLUDE...
  BROOKSVILLE...
  ROSA...
  SUSAN MOORE...
  MCLARTY...
  SNEAD...

TORRENTIAL RAIN...WHICH MAY FLOOD LOW LYING AREAS SUCH AS DITCHES AND
UNDERPASSES...IS ALSO LIKELY. DO NOT DRIVE YOUR VEHICLE ON A FLOODED
ROADWAY.

&&

LAT...LON 3425 8644 3420 8640 3411 8631 3405 8633
      3398 8633 3395 8636 3405 8659 3418 8657
      3422 8655 3426 8652 3427 8649 3427 8646
TIME...MOT...LOC 2113Z 277DEG 13KT 3434 8644 3403 8651

$$

14

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 Birmingham, AL wrote its last area forecast discussion before this special weather statement went out at Jul 4, 3:06 PM CDT, 1 hour 7 minutes earlier.

Area forecast discussion, Jul 4, 3:06 PM CDT, 1 hour 7 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BIRMINGHAM AL
306 PM CDT MON JUL 4 2011

.DISCUSSION...

SCATTERED TO NUMEROUS THUNDERSTORMS HAVE DEVELOPED THIS AFTERNOON
AS A GENERAL WEAKNESS IN THE UPPER ATMOSPHERE HAS SET IN ACROSS
THE DEEP SOUTH. STRONG TO ISOLATED SEVERE STORMS WITH WIND GUSTS
REPORTED UP TO 70 MPH WITH SOME DAMAGE HAVE OCCURRED THUS FAR.
THUNDERSTORMS USUALLY CONTINUE INTO THE EARLY EVENING HOURS WITH
THIS TYPE OF PATTERN SO WILL KEEP THE CHANCE WORDING FOR THE
OVERNIGHT AND LET THE EVENING SHIFT CLEAN IT UP ONCE THE ACTIVITY
DIES DOWN. WAS TEMPTED TO GO WITH LIKELY POPS THE NEXT COUPLE OF
DAYS AS LEFT OVER BOUNDARIES...DAYTIME HEATING AND THE PRESENCE
OF THE UPPER TROUGH SHOULD ALLOW FOR PLENTY OF THUNDERSTORM
DEVELOPMENT...BUT WILL HOLD OFF WITH HIGHER CHANCE WORDING FOR
NOW.

THIS PATTERN IS EXPECTED TO REMAIN IN PLACE THROUGH FRIDAY AT
WHICH POINT SOME UPPER RIDGING WILL BEGIN TO BUILD NEAR THE OHIO
VALLEY AND LESSEN THE POTENTIAL FOR CONVECTION ALTHOUGH NOT
ELIMINATE EITHER. WILL TAPPER THE POPS TO LOWER CHANCE AS WE REACH
INTO THE WEEKEND AND EARLY NEXT WEEK WHEN CONVECTION LOOKS TO
BECOME MORE DIURNALLY RESTRICTED.

TEMPERATURES NEAR NORMAL FOR EARLY JULY WITH HIGHS IN THE LOWER TO
MID 90S AND LOWS IN THE UPPER 60S TO LOWER 70S.

&&

.AVIATION...18Z TAF DISCUSSION.

SEVERAL OUTFLOW BOUNDARIES APPROACHING THE AREA COULD SPARK SOME
AFTERNOON THUNDERSTORMS. WITH HIGH PRESSURE NO LONGER DOMINATING THE
WEATHER PATTERN...THERE SHOULD BE NO SUPPRESSION OF CONVECTION. WENT
AHEAD AND MENTIONED VCTS AT ALL SITES SINCE CONFIDENCE IS NOT HIGH
AS TO WHERE EXACTLY THUNDERSTORMS WILL INITIATE AND PROPAGATE
THROUGHOUT THE DAY. AMENDMENTS MAY BE NECESSARY THIS AFTERNOON ONCE
CONVECTION BEGINS. WINDS WILL BECOME CALM ONCE AGAIN AFTER SUNSET
AND THE THUNDERSTORM ACTIVITY CLEARS. LOW CLOUDS WILL LIKELY MOVE
INTO THE NORTHERN 4 SITES DURING THE MORNING HOURS. DOES NOT LOOK
LIKE CLOUDS WILL MAKE IT AS FAR SOUTH AS MGM OR TOI...SO WITH
ABUNDANT MOISTURE AGAIN...EXPECT BR FOR A COUPLE OF HOURS TOMORROW
MORNING.

NOTICE...KEET TAF WILL HAVE (AMD LTD TO VIS WIND AND WX) AMENDED TO
THE END OF THE FORECAST UNTIL FURTHER NOTICE. THE CEILOMETER DATA
WILL BE GOING THROUGH NUMEROUS TESTS AND MONITORED FOR ACCURACY.

&&

.PRELIMINARY POINT TEMPS/POPS...
GADSDEN     68  90  68  89  67 /  30  50  30  50  30
ANNISTON    71  92  70  92  69 /  30  50  30  50  30
BIRMINGHAM  73  93  72  93  72 /  30  50  30  50  30
TUSCALOOSA  73  92  71  94  71 /  40  50  30  50  30
CALERA      72  91  71  91  71 /  30  50  30  50  30
AUBURN      72  92  72  92  72 /  30  40  30  40  30
MONTGOMERY  72  95  71  93  71 /  30  40  30  40  30
TROY        68  94  69  93  69 /  30  30  30  40  30

&&

.BMX WATCHES/WARNINGS/ADVISORIES...
NONE.

&&

88/73

Hazardous weather outlook, Jul 4, 2:33 PM CDT, 1 hour 40 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE BIRMINGHAM AL
233 PM CDT MON JUL 4 2011

ALZ011>015-017>050-051936-
AUTAUGA-BARBOUR-BIBB-BLOUNT-BULLOCK-CALHOUN-CHAMBERS-CHEROKEE-
CHILTON-CLAY-CLEBURNE-COOSA-DALLAS-ELMORE-ETOWAH-FAYETTE-GREENE-HALE-
JEFFERSON-LAMAR-LEE-LOWNDES-MACON-MARENGO-MARION-MONTGOMERY-PERRY-
PICKENS-PIKE-RANDOLPH-RUSSELL-SHELBY-ST CLAIR-SUMTER-TALLADEGA-
TALLAPOOSA-TUSCALOOSA-WALKER-WINSTON-
233 PM CDT MON JUL 4 2011

THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE COUNTIES SERVED BY THE
NATIONAL WEATHER SERVICE OFFICE IN BIRMINGHAM.

.DAY ONE...THIS AFTERNOON AND TONIGHT.

ISOLATED SEVERE THUNDERSTORMS WILL BE POSSIBLE THROUGH 8 PM ACROSS
ALL OF CENTRAL ALABAMA. WIND GUST TO 70 MPH WILL BE POSSIBLE ALONG
WITH LARGE HAIL.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

ACTIVATION OF STORM SPOTTERS AND EMERGENCY MANAGEMENT IS NOT
EXPECTED AT THIS TIME.

In the hours before

Special weather statement, Jul 4, 3:19 PM CDT, 54 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
319 PM CDT MON JUL 4 2011

ALZ031-032-042100-
GREENE AL-HALE AL-
319 PM CDT MON JUL 4 2011

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN HALE AND NORTHERN
GREENE COUNTIES UNTIL 400 PM CDT...

AT 318 PM CDT...THE NATIONAL WEATHER SERVICE WAS TRACKING A STRONG
THUNDERSTORM NEAR UNION...OR 7 MILES NORTH OF EUTAW...MOVING
SOUTHEAST AT 15 MPH.

HAIL UP TO ONE-HALF INCH IN DIAMETER AND WIND GUSTS UP TO 50 MPH ARE
EXPECTED WITH THIS STORM...ALONG WITH HEAVY RAIN AND FREQUENT
DANGEROUS LIGHTNING.

LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...
  EUTAW...
  KNOXVILLE...
  WALDEN QUARTERS...
  AKRON...
  EVANSVILLE...

THIS STORM MAY INTENSIFY...SO BE CERTAIN TO MONITOR LOCAL RADIO AND
TV STATIONS...AS WELL AS LOCAL CABLE TV OUTLETS... FOR ADDITIONAL
INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE.

TORRENTIAL RAIN...WHICH MAY FLOOD LOW LYING AREAS SUCH AS DITCHES AND
UNDERPASSES...IS ALSO LIKELY. DO NOT DRIVE YOUR VEHICLE ON A FLOODED
ROADWAY.

&&

LAT...LON 3308 8798 3308 8797 3309 8795 3304 8783
      3302 8783 3302 8777 3296 8761 3267 8776
      3290 8816
TIME...MOT...LOC 2019Z 300DEG 13KT 3294 8791

56

Local storm report, Jul 4, 3:26 PM CDT, 47 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
326 PM CDT MON JUL 04 2011

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0143 PM     TSTM WND DMG     4 WNW JASPER            33.88N 87.32W
07/04/2011                   WALKER             AL   EMERGENCY MNGR

            A FEW TREES AND LARGE LIMBS DOWN AT BRAKEFIELD DAIRY ROAD
            AND HIGHWAY 5.

&&

AG

Special weather statement, Jul 4, 3:30 PM CDT, 43 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
330 PM CDT MON JUL 4 2011

ALZ023-042115-
TUSCALOOSA AL-
330 PM CDT MON JUL 4 2011

...SIGNIFICANT WEATHER ADVISORY FOR TUSCALOOSA COUNTY UNTIL 415 PM
CDT...

AT 330 PM CDT...THE NATIONAL WEATHER SERVICE WAS TRACKING STRONG
THUNDERSTORMS ALONG A LINE EXTENDING FROM LAKE TUSCALOOSA BINION
CREEK LANDING TO KNOXVILLE...AND MOVING EAST AT 15 MPH.

PEA SIZE HAIL AND WIND GUSTS UP TO 40 MPH ARE EXPECTED WITH THESE
STORMS...ALONG WITH HEAVY RAIN AND FREQUENT DANGEROUS LIGHTNING.

LOCATIONS IN OR NEAR THE PATH OF THESE STORMS INCLUDE...
  NORTHPORT...
  TUSCALOOSA...
  HOLT...
  LAKE LURLEEN STATE PARK...
  COKER...

THESE STORMS MAY INTENSIFY...SO BE CERTAIN TO MONITOR LOCAL RADIO AND
TV STATIONS...AS WELL AS LOCAL CABLE TV OUTLETS... FOR ADDITIONAL
INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE.

TORRENTIAL RAIN...WHICH MAY FLOOD LOW LYING AREAS SUCH AS DITCHES AND
UNDERPASSES...IS ALSO LIKELY. DO NOT DRIVE YOUR VEHICLE ON A FLOODED
ROADWAY.

&&

LAT...LON 3347 8771 3344 8728 3339 8723 3337 8723
      3330 8713 3324 8715 3320 8720 3313 8720
      3313 8728 3309 8731 3301 8732 3300 8771
      3302 8771 3302 8783 3323 8784
TIME...MOT...LOC 2030Z 269DEG 8KT 3339 8765 3302 8784

56

Local storm report, Jul 4, 3:59 PM CDT, 14 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
359 PM CDT MON JUL 04 2011

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0351 PM     HAIL             3 WSW BESSEMER          33.36N 87.01W
07/04/2011  E0.50 INCH       JEFFERSON          AL   BROADCAST MEDIA

&&

AG

Special weather statement, Jul 4, 4:08 PM CDT, 5 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
408 PM CDT MON JUL 4 2011

ALZ014-042200-
WINSTON AL-
408 PM CDT MON JUL 4 2011

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHERN WINSTON COUNTY UNTIL 500
PM CDT...

AT 406 PM CDT...THE NATIONAL WEATHER SERVICE WAS TRACKING A STRONG
THUNDERSTORM NEAR LYNN...MOVING SOUTHEAST AT 10 MPH.

HAIL UP TO ONE-HALF INCH IN DIAMETER AND WIND GUSTS UP TO 50 MPH ARE
EXPECTED WITH THIS STORM...ALONG WITH HEAVY RAIN AND FREQUENT
DANGEROUS LIGHTNING.

LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...
  WINSTON FREE STATE BARN...
  ASHBANK...
  DOUBLE SPRINGS...
  HOUSTON RECREATIONAL AREA...
  POPLAR SPRINGS...

THIS STORM MAY INTENSIFY...SO BE CERTAIN TO MONITOR LOCAL RADIO AND
TV STATIONS...AS WELL AS LOCAL CABLE TV OUTLETS... FOR ADDITIONAL
INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE.

TORRENTIAL RAIN...WHICH MAY FLOOD LOW LYING AREAS SUCH AS DITCHES AND
UNDERPASSES...IS ALSO LIKELY. DO NOT DRIVE YOUR VEHICLE ON A FLOODED
ROADWAY.

&&

LAT...LON 3415 8719 3400 8727 3399 8740 3403 8764
      3409 8764 3424 8763
TIME...MOT...LOC 2109Z 295DEG 8KT 3408 8748

Special weather statement, Jul 4, 4:13 PM CDT, 0 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
413 PM CDT MON JUL 4 2011

ALZ017-042200-
BLOUNT AL-
413 PM CDT MON JUL 4 2011

...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN BLOUNT COUNTY UNTIL
500 PM CDT...

AT 409 PM CDT...THE NATIONAL WEATHER SERVICE WAS TRACKING STRONG
THUNDERSTORMS ALONG A LINE EXTENDING FROM ARAB TO ROSA...AND MOVING
EAST AT 15 MPH.

PEA SIZE HAIL AND WIND GUSTS UP TO 40 MPH ARE EXPECTED WITH THESE
STORMS...ALONG WITH HEAVY RAIN AND FREQUENT DANGEROUS LIGHTNING.

LOCATIONS IN OR NEAR THE PATH OF THESE STORMS INCLUDE...
  BROOKSVILLE...
  ROSA...
  SUSAN MOORE...
  MCLARTY...
  SNEAD...

TORRENTIAL RAIN...WHICH MAY FLOOD LOW LYING AREAS SUCH AS DITCHES AND
UNDERPASSES...IS ALSO LIKELY. DO NOT DRIVE YOUR VEHICLE ON A FLOODED
ROADWAY.

&&

LAT...LON 3425 8644 3420 8640 3411 8631 3405 8633
      3398 8633 3395 8636 3405 8659 3418 8657
      3422 8655 3426 8652 3427 8649 3427 8646
TIME...MOT...LOC 2113Z 277DEG 13KT 3434 8644 3403 8651

14

The office that day

Everything else NWS Birmingham, AL issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 3, 7:23 PM CDT	Special Weather Statement	BMX	Fayette	52 min
Jul 3, 7:59 PM CDT	Special Weather Statement	BMX	Winston	46 min
Jul 3, 8:07 PM CDT	Special Weather Statement	BMX	Pickens	38 min
Jul 3, 8:16 PM CDT	Special Weather Statement	BMX	Tuscaloosa	44 min
Jul 3, 8:38 PM CDT	Severe Thunderstorm Warning	BMX	Lamar, Pickens	52 min
Jul 3, 8:45 PM CDT	Special Weather Statement	BMX	Walker	45 min
Jul 3, 8:58 PM CDT	Severe Thunderstorm Warning	BMX	Jefferson, Walker	47 min
Jul 3, 9:32 PM CDT	Special Weather Statement	BMX	Pickens	43 min
Jul 3, 9:46 PM CDT	Special Weather Statement	BMX	Walker	29 min
Jul 3, 10:21 PM CDT	Special Weather Statement	BMX	Blount	39 min
Jul 4, 12:50 PM CDT	Special Weather Statement	BMX	Marengo	40 min
Jul 4, 1:30 PM CDT	Special Weather Statement	BMX	Walker	45 min
Jul 4, 1:36 PM CDT	Special Weather Statement	BMX	Greene	39 min
Jul 4, 1:40 PM CDT	Severe Thunderstorm Warning	BMX	Jefferson, St. Clair	35 min
Jul 4, 1:40 PM CDT	Severe Thunderstorm Warning	BMX	Walker	50 min
Jul 4, 1:44 PM CDT	Special Weather Statement	BMX	Jefferson	46 min
Jul 4, 1:59 PM CDT	Severe Thunderstorm Warning	BMX	Greene, Hale	46 min
Jul 4, 2:04 PM CDT	Areal Flood Advisory	BMX	Jefferson	3 hr
Jul 4, 2:14 PM CDT	Special Weather Statement	BMX	Randolph	46 min
Jul 4, 2:18 PM CDT	Special Weather Statement	BMX	Greene	42 min
Jul 4, 2:26 PM CDT	Severe Thunderstorm Warning	BMX	Greene, Pickens, Sumter	45 min
Jul 4, 2:30 PM CDT	Special Weather Statement	BMX	Jefferson	45 min
Jul 4, 2:32 PM CDT	Special Weather Statement	BMX	Bibb	43 min
Jul 4, 2:34 PM CDT	Severe Thunderstorm Warning	BMX	Bibb, Hale, Perry, Tuscaloosa	41 min
Jul 4, 2:39 PM CDT	Special Weather Statement	BMX	Marengo	51 min
Jul 4, 2:52 PM CDT	Special Weather Statement	BMX	Jefferson	38 min
Jul 4, 2:56 PM CDT	Severe Thunderstorm Warning	BMX	Bibb, Jefferson, Shelby, Tuscaloosa	49 min
Jul 4, 2:58 PM CDT	Severe Thunderstorm Warning	BMX	Sumter	47 min
Jul 4, 3:19 PM CDT	Special Weather Statement	BMX	Greene	41 min
Jul 4, 3:29 PM CDT	Areal Flood Advisory	BMX	Sumter	3 hr
Jul 4, 3:30 PM CDT	Special Weather Statement	BMX	Tuscaloosa	45 min
Jul 4, 3:44 PM CDT	Severe Thunderstorm Warning	BMX	Bibb, Jefferson, St. Clair, Shelby, Tuscaloosa	46 min
Jul 4, 3:49 PM CDT	Areal Flood Advisory	BMX	Jefferson, Shelby	3 hr
Jul 4, 4:06 PM CDT	Severe Thunderstorm Warning	BMX	Jefferson, Tuscaloosa, Walker	39 min
Jul 4, 4:08 PM CDT	Special Weather Statement	BMX	Winston	52 min
Jul 4, 4:27 PM CDT	Special Weather Statement	BMX	Shelby	48 min
Jul 4, 4:40 PM CDT	Special Weather Statement	BMX	Clay	50 min
Jul 4, 4:42 PM CDT	Flash Flood Warning	BMX	Sumter	3 hr
Jul 4, 4:47 PM CDT	Special Weather Statement	BMX	Fayette	43 min
Jul 4, 5:07 PM CDT	Special Weather Statement	BMX	Marion	38 min
Jul 4, 5:18 PM CDT	Severe Thunderstorm Warning	BMX	Chilton, Coosa	31 min
Jul 4, 5:37 PM CDT	Special Weather Statement	BMX	Clay	53 min
Jul 4, 5:39 PM CDT	Severe Thunderstorm Warning	BMX	Lamar, Marion	51 min
Jul 4, 5:52 PM CDT	Special Weather Statement	BMX	Coosa	38 min
Jul 4, 5:57 PM CDT	Severe Thunderstorm Warning	BMX	Marion, Walker, Winston	39 min
Jul 4, 6:20 PM CDT	Special Weather Statement	BMX	Fayette	25 min
Jul 4, 6:40 PM CDT	Special Weather Statement	BMX	Fayette, Walker	50 min

Nearby

Special Weather Statements in Alabama, 2011 Every special weather statement in 2011

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.