Alert archive / Nebraska / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 307, NWS North Platte, NE

August 17, 20115 counties in Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at Aug 17, 2011, 10:09 PM CDT for 5 counties in Nebraska. It was in force for 51 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: Aug 17, 2011, 10:09 PM CDT (03:09 UTC)
Expired: Aug 17, 2011, 11:00 PM CDT
In force: 51 min
Issued by: NWS North Platte, NE
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Boyd County, NE, Brown County, NE, Holt County, NE, Keya Paha County, NE, Rock County, NE

The radar

The North Platte radar (KLNX), 129 km from the middle of the area, began a volume at 03:11 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.

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

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 nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 3.2 hours before the alert went out and 203 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: 1270 J/kg
Mixed-layer CIN: -74 J/kg
Mixed-layer LCL: 1399 m above ground
0-6 km bulk shear: 46 kt
0-1 km storm-relative helicity: 55 m²/s²
0-3 km storm-relative helicity: 180 m²/s²
Significant tornado parameter: 0.6
Supercell composite: 7.5

Open this sounding in Storm Lab

The text

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

695 
WUUS53 KLBF 180309
SVRLBF
NEC015-017-089-103-149-180400-
/O.NEW.KLBF.SV.W.0307.110818T0309Z-110818T0400Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NORTH PLATTE NE
1009 PM CDT WED AUG 17 2011

THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHWESTERN BOYD COUNTY IN NORTH CENTRAL NEBRASKA...
  NORTHEASTERN BROWN COUNTY IN NORTH CENTRAL NEBRASKA...
  NORTHWESTERN HOLT COUNTY IN NORTH CENTRAL NEBRASKA...
  EASTERN KEYA PAHA COUNTY IN NORTH CENTRAL NEBRASKA...
  NORTHERN ROCK COUNTY IN NORTH CENTRAL NEBRASKA...

* UNTIL 1100 PM CDT

* AT 1006 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER SIZE
  HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THESE STORMS WERE
  LOCATED ALONG A LINE EXTENDING FROM 6 MILES NORTHWEST OF MILLS TO 5
  MILES EAST OF THOMAS CREEK STATE WILDLIFE MANAGEMENT AREA TO KELLER
  PARK STATE RECREATION AREA...AND MOVING EAST AT 30 MPH.

* SEVERE THUNDERSTORMS WILL BE NEAR...
  MILLS AROUND 1020 PM CDT.
  BASSETT AROUND 1030 PM CDT.
  NAPER AND NEWPORT AROUND 1045 PM CDT.

OTHER LOCATIONS IMPACTED BY THESE SEVERE THUNDERSTORMS INCLUDE
HIGHWAY 137 MILE MARKER 20...HIGHWAY 137 MILE MARKER 10 AND HIGHWAY
12 MILE MARKER 90.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THESE STORMS HAVE 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.

TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT
AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
IN NORTH PLATTE.

&&

LAT...LON 4250 9925 4261 9985 4300 9962 4300 9899
TIME...MOT...LOC 0309Z 288DEG 25KT 4298 9947 4277 9956
          4261 9974
WIND...HAIL 60MPH 1.00IN

$$

TAYLOR

2 follow-up statements

650 
WWUS53 KLBF 180322
SVSLBF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
1022 PM CDT WED AUG 17 2011

NEC017-180332-
/O.CAN.KLBF.SV.W.0307.000000T0000Z-110818T0400Z/
BROWN NE-
1022 PM CDT WED AUG 17 2011

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN BROWN COUNTY IS
CANCELLED...

THE LINE OF STORMS WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE 
WARNED AREA.

TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT
AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
IN NORTH PLATTE.

LAT...LON 4258 9967 4299 9950 4300 9899 4250 9925
TIME...MOT...LOC 0322Z 288DEG 25KT 4295 9935 4274 9944
          4258 9962

$$

NEC015-089-103-149-180400-
/O.CON.KLBF.SV.W.0307.000000T0000Z-110818T0400Z/
BOYD NE-HOLT NE-KEYA PAHA NE-ROCK NE-
1022 PM CDT WED AUG 17 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHERN
ROCK...EASTERN KEYA PAHA...NORTHWESTERN HOLT AND NORTHWESTERN BOYD
COUNTIES UNTIL 1100 PM CDT...

AT 1020 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER SIZE
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THESE STORMS WERE
LOCATED ALONG A LINE EXTENDING FROM MILLS TO 12 MILES EAST OF THOMAS
CREEK STATE WILDLIFE MANAGEMENT AREA TO LONG PINE...MOVING EAST AT 30
MPH.

SEVERE THUNDERSTORMS WILL BE NEAR...
  BASSETT AROUND 1030 PM CDT.
  NAPER AND NEWPORT AROUND 1045 PM CDT.

OTHER LOCATIONS IMPACTED BY SEVERE THUNDERSTORMS INCLUDE HIGHWAY 137
MILE MARKER 10 AND HIGHWAY 12 MILE MARKER 90.

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.

TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT
AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
IN NORTH PLATTE.

&&

LAT...LON 4258 9967 4299 9950 4300 9899 4250 9925
TIME...MOT...LOC 0322Z 288DEG 25KT 4295 9935 4274 9944
          4258 9962
WIND...HAIL 60MPH 1.00IN

$$

TAYLOR

576 
WWUS53 KLBF 180402
SVSLBF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
1102 PM CDT WED AUG 17 2011

NEC015-089-103-149-180410-
/O.EXP.KLBF.SV.W.0307.000000T0000Z-110818T0400Z/
BOYD NE-HOLT NE-KEYA PAHA NE-ROCK NE-
1102 PM CDT WED AUG 17 2011

...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN ROCK...EASTERN KEYA
PAHA...NORTHWESTERN HOLT AND NORTHWESTERN BOYD COUNTIES HAS
EXPIRED...

THE LINE OF STORMS WHICH PROMPTED THE WARNING HAS WEAKENED BELOW
SEVERE LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR
PROPERTY.  HOWEVER SMALL HAIL...GUSTY WINDS AND HEAVY RAIN ARE STILL
POSSIBLE WITH THESE THUNDERSTORMS.

TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT
AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
IN NORTH PLATTE.

LAT...LON 4258 9967 4299 9950 4300 9899 4250 9925
TIME...MOT...LOC 0322Z 288DEG 25KT 4295 9935 4274 9944
          4258 9962

$$

TAYLOR

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, 3:00 PM CDT, 7 hours 9 minutes earlier.

Area forecast discussion, Aug 17, 3:00 PM CDT, 7 hours 9 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...BROOKS

Hazardous weather outlook, Aug 17, 3:55 PM CDT, 6 hours 14 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, 8:37 PM CDT, 1 hour 32 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
837 PM CDT WED AUG 17 2011

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

0835 PM     HAIL             20 S MULLEN             41.75N 101.04W
08/17/2011  M1.00 INCH       HOOKER             NE   NWS EMPLOYEE

&&

SPRINGER

Local storm report, Aug 17, 8:39 PM CDT, 1 hour 30 minutes before

PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE NORTH PLATTE NE
839 PM CDT WED AUG 17 2011

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

0825 PM     HAIL             20 S MULLEN             41.75N 101.04W
08/17/2011  M1.00 INCH       HOOKER             NE   NWS EMPLOYEE

&&

SPRINGER

Local storm report, Aug 17, 8:47 PM CDT, 1 hour 22 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
847 PM CDT WED AUG 17 2011

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

0739 PM     HAIL             5 W MULLEN              42.04N 101.14W
08/17/2011  E1.75 INCH       HOOKER             NE   LAW ENFORCEMENT

&&

JAHSENMA

Local storm report, Aug 17, 9:32 PM CDT, 37 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
932 PM CDT WED AUG 17 2011

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

0922 PM     HAIL             7 NNE SPARKS            43.02N 100.21W
08/17/2011  E1.00 INCH       TODD               SD   PUBLIC

&&

JAHSENMA

Local storm report, Aug 17, 9:39 PM CDT, 30 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
939 PM CDT WED AUG 17 2011

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

0937 PM     FUNNEL CLOUD     12 W SPRINGVIEW         42.83N 99.99W
08/17/2011                   KEYA PAHA          NE   LAW ENFORCEMENT

&&

JAHSENMA

Local storm report, Aug 17, 9:54 PM CDT, 15 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
954 PM CDT WED AUG 17 2011

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

0947 PM     FUNNEL CLOUD     17 NNW AINSWORTH        42.78N 99.99W
08/17/2011                   BROWN              NE   TRAINED SPOTTER

&&

BTAYLOR

The office that day

Everything else NWS North Platte, NE issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 17, 7:07 PM CDT	Tornado Warning	LBF	Cherry, Hooker	38 min
Aug 17, 7:36 PM CDT	Severe Thunderstorm Warning	LBF	Chase	39 min
Aug 17, 7:44 PM CDT	Tornado Warning	LBF	Hooker	46 min
Aug 17, 8:13 PM CDT	Severe Thunderstorm Warning	LBF	Hooker, McPherson	62 min
Aug 17, 9:10 PM CDT	Tornado Warning	LBF	Brown, Cherry, Keya Paha	35 min
Aug 17, 9:44 PM CDT	Tornado Warning	LBF	Brown, Keya Paha, Rock	31 min
Aug 18, 4:22 PM CDT	Severe Thunderstorm Warning	LBF	Boyd	53 min
Aug 18, 4:43 PM CDT	Severe Thunderstorm Warning	LBF	Holt	47 min
Aug 18, 4:54 PM CDT	Severe Thunderstorm Warning	LBF	Boyd, Holt	66 min
Aug 18, 5:19 PM CDT	Tornado Warning	LBF	Holt	26 min
Aug 18, 5:25 PM CDT	Severe Thunderstorm Warning	LBF	Holt	50 min
Aug 18, 5:53 PM CDT	Tornado Warning	LBF	Holt	37 min
Aug 18, 6:39 PM CDT	Severe Thunderstorm Warning	LBF	Cherry	66 min

Nearby

Severe Thunderstorm Warnings in Nebraska, 2011 Every 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.