Alert archive / Nebraska / Severe Thunderstorm Warnings in 2011
Severe Thunderstorm Warning 304, NWS North Platte, NE
NWS North Platte, NE issued this severe thunderstorm warning at Aug 17, 2011, 5:18 PM MDT for Cherry County, Nebraska. It was in force for 57 min. 1 report came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Aug 17, 2011, 5:18 PM MDT (23:18 UTC)
- Expired
- Aug 17, 2011, 6:15 PM MDT
- In force
- 57 min
- Issued by
- NWS North Platte, NE
- Area
- Storm-based polygon
- Hail
- 1.75 in
- Wind
- 80.0 mph
County Cherry County, NE
The radar
The North Platte radar (KLNX), 70 km from the middle of the area, began a volume at 23:21 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Aug 17, 5:21 PM MDT | HAIL 1.25 | 36 Nw Mullen, NE |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
Did it verify
Verified. The Iowa Environmental Mesonet's Cow matched one storm report to this severe thunderstorm warning; the first came 3 minutes after it went out.
Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Aug 17, 2:37 PM MDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
N. Platte/Lee Bi, NE (KLBF), launched 12:00Z, 11.3 hours before the alert went out and 151 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
- 434 J/kg
- Mixed-layer CIN
- -108 J/kg
- Mixed-layer LCL
- 696 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 35 m²/s²
- 0-3 km storm-relative helicity
- 101 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
749 WUUS53 KLBF 172318 SVRLBF NEC031-180015- /O.NEW.KLBF.SV.W.0304.110817T2318Z-110818T0015Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE NORTH PLATTE NE 518 PM MDT WED AUG 17 2011 THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... CENTRAL CHERRY COUNTY IN NORTH CENTRAL NEBRASKA... * UNTIL 615 PM MDT * AT 517 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING GOLF BALL SIZE HAIL...AND DESTRUCTIVE WINDS IN EXCESS OF 80 MPH. THIS STORM WAS LOCATED NEAR SPECKEL MEIR LAKE...OR 30 MILES NORTHWEST OF MULLEN...AND MOVING EAST AT 20 MPH. * LOCATIONS IMPACTED INCLUDE... SPECKEL MEIR LAKE...HIGHWAY 97 CROSSING BIG CREEK...HIGHWAY 97 CROSSING THE NORTH LOUP RIVER...HIGHWAY 97 MILE MARKER 80 AND HIGHWAY 97 MILE MARKER 100. PRECAUTIONARY/PREPAREDNESS ACTIONS... SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER HOUR...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE INTO AREAS WHERE WATER COVERS THE ROAD. THIS STORM HAS EXHIBITED SOME WEAK ROTATION. TORNADOES CAN DEVELOP QUICKLY FROM SEVERE THUNDERSTORMS. ALTHOUGH ONE IS NOT IMMEDIATELY LIKELY...IF A TORNADO IS SPOTTED...ACT QUICKLY AND MOVE TO A PLACE OF SAFETY INSIDE A STURDY STRUCTURE...SUCH AS A BASEMENT OR SMALL INTERIOR ROOM. && LAT...LON 4250 10081 4213 10102 4239 10166 4260 10142 TIME...MOT...LOC 2318Z 278DEG 18KT 4237 10143 WIND...HAIL 80MPH 1.75IN $$ SPRINGER
1 follow-up statement
934 WWUS53 KLBF 172345 SVSLBF SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE NORTH PLATTE NE 545 PM MDT WED AUG 17 2011 NEC031-180015- /O.CON.KLBF.SV.W.0304.000000T0000Z-110818T0015Z/ CHERRY NE- 545 PM MDT WED AUG 17 2011 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR CENTRAL CHERRY COUNTY UNTIL 615 PM MDT... AT 544 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING GOLF BALL SIZE HAIL...AND EXTREME DAMAGING WINDS IN EXCESS OF 100 MPH. THIS STORM WAS LOCATED 9 MILES SOUTHWEST OF HIGHWAY 97 CROSSING BIG CREEK...OR 15 MILES NORTH OF MULLEN...MOVING SOUTHEAST AT 60 MPH. LOCATIONS IMPACTED INCLUDE... HIGHWAY 97 MILE MARKER 80. PRECAUTIONARY/PREPAREDNESS ACTIONS... THIS STORM HAS EXHIBITED SOME WEAK ROTATION. TORNADOES CAN DEVELOP QUICKLY FROM SEVERE THUNDERSTORMS. ALTHOUGH ONE IS NOT IMMEDIATELY LIKELY...IF A TORNADO IS SPOTTED...ACT QUICKLY AND MOVE TO A PLACE OF SAFETY INSIDE A STURDY STRUCTURE... SUCH AS A BASEMENT OR SMALL INTERIOR ROOM. && LAT...LON 4250 10081 4213 10102 4239 10166 4260 10142 TIME...MOT...LOC 2345Z 300DEG 53KT 4224 10111 WIND...HAIL 100MPH 1.75IN $$ SPRINGER
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS North Platte, NE wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 17, 2:00 PM MDT, 3 hours 18 minutes earlier.
Area forecast discussion, Aug 17, 2:00 PM MDT, 3 hours 18 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE NORTH PLATTE NE
3 PM CDT WED AUG 17 2011
.SYNOPSIS...
AT 19Z...SURFACE ANALYSIS SHOWED LOW PRESSURE CENTERED IN
EXTREME SOUTHEAST MONTANA WITH A BOUNDARY EXTENDING INTO NORTHWEST
NEBRASKA. SATELLITE DERIVED PRECIPITABLE WATER SHOWED A PLUME OF
25-35MM PUSHING THROUGH WESTERN NEBRASKA AND ACROSS WESTERN
NEBRASKA. DERIVED LIFTED INDICES IN THAT AREA WERE -5C TO -7C. ONE
COULD SEE FIELDS OF CUMULUS CLOUDS BOTH OPEN CELLED AND IN STREETS
IN A 70 MILE WIDE SWATH FROM NEAR MERRIMAN AND VALENTINE TO NORTH
PLATTE AND IMPERIAL.
&&
.SHORT RANGE...TONIGHT THROUGH THURSDAY NIGHT.
FOR TONIGHT...ALL CURRENT INDICATIONS DISCUSSED IN THE SYNOPSIS
ARE PRESENT TO LIGHT OFF CONVECTION IN NORTHWEST AND WEST CENTRAL
NEBRASKA ALONG THE SURFACE BOUNDARY WITH SUBSEQUENT PROPAGATION TO
THE SOUTHEAST. FOR CONVECTION THAT DOES DEVELOP...THERE IS LITTLE
DOUBT THAT INSTABILITY AND VERTICAL WIND PROFILES AND 0-6KM BULK
SHEAR IS SUFFICIENT TO SUPPORT LARGE HAIL AND POSSIBLY DAMAGING
WIND. THE MOISTURE WILL ALSO SUPPORT INTENSE RAINFALL FOR AT LEAST
BRIEF PERIODS. THERE IS STILL SOME UNCERTAINTY REGARDING THE
TIMING...EXTENT AND PATH OF CONVECTION.
A BULGE IN THE DRY LINE WILL PUSH INTO WESTERN NEBRASKA
THURSDAY. VERY UNSTABLE CONDITIONS ARE AGAIN EXPECTED AHEAD OF IT.
BECAUSE OF TIMING...MOST OF THE SEVERE WEATHER IS EXPECTED TO BE
EAST OF A VALENTINE TO NORTH PLATTE LINE.
.MEDIUM RANGE...FRIDAY AND SATURDAY.
WITH THE FRONT STALLING ALONG THE EASTERN SLOPE AND ACROSS
SOUTHERN KANSAS...SEVERE WEATHER IS POSSIBLE AGAIN FRIDAY AND
SATURDAY.
.EXTENDED...SUNDAY THROUGH WEDNESDAY.
WITH A SURFACE TROUGH CONTINUING ON THE HIGH PLAINS...THERE IS
JUSTIFICATION FOR KEEPING A MENTION OF THUNDERSTORMS IN THE FORECAST
THROUGH AT LEAST SUNDAY NIGHT.
AN UPPER RIDGE WILL BUILD BACK INTO THE SOUTHWEST. THIS SHOULD
RESULT IN DRY AND VERY WARM CONDITIONS MONDAY THROUGH WEDNESDAY.
EXTENDED MODELS ARE ON THE SAME PAGE WITH THAT SCENARIO. THE
LATEST STATISTICAL OUTPUT FROM THE GFS HAS KICKED HIGH TEMPERATURES
UP AROUND 10F FROM THE PREVIOUS RUN. HIGHS IN THE 90S WOULD FIT WITH
THE POSITION AND STRENGTH OF THE UPPER RIDGE...SO WE WILL NUDGE
TEMPERATURES UP IN THE FORECAST.
&&
.AVIATION...
AVIATION CONCERNS THROUGH 18Z THURSDAY DEAL WITH THUNDERSTORM
CHANCES THIS EVENING AND OVERNIGHT AS WELL AS MVFR/IFR CEILINGS AND
VISIBILITIES THURSDAY MORNING.
IN TERMS OF THUNDERSTORM CHANCES...A WEAK UPPER LEVEL
DISTURBANCE WILL MOVE ACROSS NEBRASKA LATER THIS AFTERNOON AND THIS
EVENING. AS THIS OCCURS...THUNDERSTORMS ARE EXPECTED TO DEVELOP OVER
THE NEBRASKA PANHANDLE AND WESTERN NEBRASKA THEN MOVE EAST. AS THE
LOW LEVEL WINDS INCREASE FROM THE SOUTH TONIGHT...THIS CONVECTION
SHOULD CONTINUE AS IT MOVES EAST AND EXIT THE AREA BY THURSDAY
MORNING. WITH A SURFACE FRONT SITUATED TO THE SOUTH OVER KANSAS...DO
EXPECT TO SEE PLENTIFUL LOW LEVEL MOISTURE SURGING NORTH INTO
WESTERN NEBRASKA. HAVE INCLUDED LOWERED CEILINGS AND VISIBILITIES IN
THE FORECAST FOR KLBF...BUT CONFIDENCE IS LOWER ON THIS MOISTURE
MAKING IT AS FAR NORTH AS KVTN SO WILL KEEP VFR
CEILINGS/VISIBILITIES AT THAT LOCATION.
&&
.FIRE WEATHER...
WEATHER CONDITIONS ON THURSDAY AFTERNOON WILL REACH NEAR
CRITICAL LEVELS...MAINLY WEST OF HIGHWAY 61. AFTERNOON RELATIVE
HUMIDITY LEVELS IN THESE LOCATIONS ARE EXPECTED TO DROP TO AROUND 15
PERCENT OR LOWER AS DRIER AIR SURGES EAST BEHIND A FRONTAL BOUNDARY.
THIS DRIER AIR WILL ALLOW FOR DEEPER MIXING AND THUS EXPECTING
TEMPERATURES TO RISE INTO THE LOW 90S. EAST OF HIGHWAY
61...EXPECTING RELATIVE HUMIDITY PERCENTAGES IN THE 20S...BUT IF THE
DRIER AIR PROGRESSES FURTHER EAST THAN ANTICIPATED...COULD GET THESE
LOWER HUMIDITY LEVELS TO NEAR HIGHWAY 83. THE LIMITING FACTOR WITH
REACHING CRITICAL FIRE WEATHER CONDITIONS IS WINDS AS THEY LOOK TO
BE STAY UNDER 15KTS FROM THE NORTHWEST THROUGHOUT THE DAY. WILL
MONITOR THESE TRENDS AS AN UPWARD SHIFT IN EXPECTED WINDS WOULD
LIKELY BRING ABOUT CRITICAL FIRE WEATHER CONDITIONS IN SOME
LOCATIONS.
&&
.LBF WATCHES/WARNINGS/ADVISORIES...NONE.
SHORT RANGE AND MEDIUM RANGE/EXTENDED...SPRINGER
AVIATION/FIRE WEATHER...BROOKSHazardous weather outlook, Aug 17, 2:55 PM MDT, 2 hours 23 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE NORTH PLATTE NE 355 PM CDT WED AUG 17 2011 NEZ004>010-022>029-035>038-056>059-069>071-094-182100- SHERIDAN-EASTERN CHERRY-KEYA PAHA-BOYD-BROWN-ROCK-HOLT-GARDEN- GRANT-HOOKER-THOMAS-BLAINE-LOUP-GARFIELD-WHEELER-ARTHUR-MCPHERSON- LOGAN-CUSTER-DEUEL-KEITH-PERKINS-LINCOLN-CHASE-HAYES-FRONTIER- WESTERN CHERRY- 355 PM CDT WED AUG 17 2011 /255 PM MDT WED AUG 17 2011/ THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF WESTERN AND NORTH CENTRAL NEBRASKA. .DAY ONE...TONIGHT. SEVERE THUNDERSTORMS ARE POSSIBLE THROUGH TONIGHT WEST OF HIGHWAY 183 FROM SPRINGVIEW TO ANSLEY. THUNDERSTORMS INITIATING ACROSS THE NEBRASKA PANHANDLE WILL MOVE EAST INTO WESTERN AND CENTRAL NEBRASKA THIS EVENING. LARGE HAIL AND DAMAGING WINDS ARE THE MAIN THREATS. IN ADDITION...WEST OF A LINE FROM NORTH PLATTE TO VALENTINE THERE IS A THREAT FOR ISOLATED TORNADOES THROUGH EARLY EVENING. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY. ANOTHER ROUND OF SEVERE THUNDERSTORMS ARE POSSIBLE THURSDAY AFTERNOON AND THURSDAY NIGHT EAST OF A LINE FROM VALENTINE TO BROKEN BOW. LARGE HAIL AND DAMAGING WINDS ARE THE MAIN THREATS...WHILE THERE IS A THREAT FOR AN ISOLATED TORNADO. DRY AIR WILL SURGE EAST INTO THE PANHANDLE AND WESTERN NEBRASKA THURSDAY AFTERNOON. THIS DRY AIR...COMBINED WITH WARM TEMPERATURES IN THE LOWER AND MID 90S WILL LEAD TO VERY HIGH FIRE DANGER OVER THE EASTERN PANHANDLE. SEVERE THUNDERSTORMS ARE POSSIBLE FRIDAY AFTERNOON AND FRIDAY NIGHT SOUTH OF A LINE FROM ANTIOCH TO BRADY...THEN AGAIN ON SATURDAY AND SATURDAY NIGHT WITH THE GREATEST THREAT FOR SEVERE STORMS SOUTH OF INTERSTATE 80. .SPOTTER INFORMATION STATEMENT... SPOTTER GROUPS SHOULD BE PREPARED FOR ACTIVATION THROUGH MID EVENING WEST OF HIGHWAY 83 FROM VALENTINE TO NORTH PLATTE. && THIS PRODUCT IS NOW AVAILABLE...ALONG WITH OTHER WEATHER... HYDROLOGICAL AND CLIMATOLOGICAL INFORMATION...AT HTTP://WWW.WEATHER.GOV/NORTHPLATTE BROOKS
In the hours before
Local storm report, Aug 17, 1:55 PM MDT, 3 hours 23 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
255 PM CDT WED AUG 17 2011
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0758 PM TORNADO 8 NNW AINSWORTH 42.66N 99.92W
08/11/2011 BROWN NE LAW ENFORCEMENT
SHERIFF DEPUTY REPORTED BRIEF TORNADO TOUCHED DOWN IN AN
OPEN FIELD WITH NO DAMAGE
&&
TKECKSpecial weather statement, Aug 17, 3:26 PM MDT, 1 hour 52 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE NORTH PLATTE NE 426 PM CDT WED AUG 17 2011 NEZ094-172230- WESTERN CHERRY NE- 326 PM MDT WED AUG 17 2011 ...SIGNIFICANT WEATHER ADVISORY FOR NORTHERN CHERRY COUNTY UNTIL 430 PM MDT... AT 322 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM 6 MILES EAST OF HIGHWAY 61 CROSSING THE NIOBRARA RIVER...OR 32 MILES EAST OF GORDON...MOVING EAST AT 25 MPH. HAIL UP TO THE SIZE OF NICKELS AND WIND GUSTS EXCEEDING 50 MPH ARE EXPECTED WITH THIS STORM...ALONG WITH FREQUENT DANGEROUS LIGHTNING. LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE... MEDICINE LAKE... ELI... SCHOOLHOUSE LAKE... STEER CREEK CAMPGROUND... NENZEL... KILGORE... CODY... THIS STORM MAY INTENSIFY...AND A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR THIS AREA. 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. SPRINGER
Special weather statement, Aug 17, 4:00 PM MDT, 1 hour 18 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE NORTH PLATTE NE 400 PM MDT WED AUG 17 2011 NEZ005-094-172300- EASTERN CHERRY NE-WESTERN CHERRY NE- 400 PM MDT WED AUG 17 2011 ...SIGNIFICANT WEATHER ADVISORY FOR CHERRY COUNTY UNTIL 500 PM MDT/600 PM CDT/... AT 459 PM CDT/359 PM MDT/...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM 8 MILES NORTH OF NENZEL TO 6 MILES NORTH OF SCHOOLHOUSE LAKE TO 8 MILES NORTH OF DIPPING VAT MEADOW...AND MOVING EAST AT 30 MPH. HAIL UP TO THE SIZE OF NICKELS AND WIND GUSTS EXCEEDING 50 MPH ARE EXPECTED WITH THESE STORMS...ALONG WITH FREQUENT DANGEROUS LIGHTNING. LOCATIONS NEAR THE PATH OF THESE STORMS INCLUDE... VALENTINE... NENZEL... SCHOOLHOUSE LAKE... KILGORE... STEER CREEK CAMPGROUND... ROUND LAKE... ANDERSON BRIDGE STATE WILDLIFE MANAGEMENT AREA... CROOKSTON... HIGHWAY 97 CROSSING THE NIOBRARA RIVER... SPECKEL MEIR LAKE... MERRITT RESERVOIR DAM... SCHLAGEL CREEK STATE WILDLIFE MANAGEMENT AREA... HIGHWAY 61 MILE MARKER 190... HIGHWAY 83 MILE MARKER 220... HIGHWAY 97 MILE MARKER 110... HIGHWAY 12 MILE MARKER 10... THESE STORMS MAY INTENSIFY...AND A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR THIS AREA. 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. SPRINGER
Special weather statement, Aug 17, 4:34 PM MDT, 44 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE NORTH PLATTE NE 434 PM MDT WED AUG 17 2011 NEZ056-057-172330- DEUEL NE-KEITH NE- 434 PM MDT WED AUG 17 2011 ...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN KEITH AND DEUEL COUNTIES UNTIL 530 PM MDT... AT 426 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A SERIES OF STRONG THUNDERSTORMS OVER DUEL COUNTY. THESE STORMS CONTINUE TO TRACK OVER DUEL COUNTY AND ARE PRODUCING TORRENTIAL RAINFALL OVER HIGHWAY 30 AND NEAR I-80. HAIL UP TO THE SIZE OF NICKELS AND WIND GUSTS UP TO 50 MPH ARE EXPECTED WITH THIS STORM...ALONG WITH HEAVY RAIN AND FREQUENT DANGEROUS LIGHTNING. 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. HIRSCH
The office that day
Everything else NWS North Platte, NE issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 17, 4:14 PM MDT | Severe Thunderstorm Warning | LBF | Cherry | 61 min |
| Aug 17, 4:51 PM MDT | Tornado Warning | LBF | Cherry | 39 min |
| Aug 17, 5:40 PM MDT | Tornado Warning | LBF | Cherry | 35 min |
Nearby
Severe Thunderstorm Warnings in Nebraska, 2011Every severe thunderstorm warning 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.