Alert archive / Nebraska / Special Weather Statements in 2012

Special Weather Statement, NWS Hastings, NE

August 7, 2012Greeley County, Nebraska

NWS Hastings, NE issued this special weather statement at Aug 7, 2012, 6:24 PM CDT for Greeley County, Nebraska. It was in force for 36 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 7, 2012, 6:24 PM CDT (23:24 UTC)
Expired: Aug 7, 2012, 7:00 PM CDT
In force: 36 min
Issued by: NWS Hastings, NE

County Greeley County, NE

The radar

The Grand Island radar (KUEX), 131 km from the middle of the area, began a volume at 23:25 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

N. Platte/Lee Bi, NE (KLBF), launched 12:00Z, 11.4 hours before the alert went out and 176 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: 709 J/kg
Mixed-layer CIN: -394 J/kg
Mixed-layer LCL: 1831 m above ground
0-6 km bulk shear: 17 kt
0-1 km storm-relative helicity: 47 m²/s²
0-3 km storm-relative helicity: 37 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.

<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <title>Service Notice</title>
  <link rel="stylesheet" href="index.css">
</head>
<body>
  <main class="wrap">
    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
      <p id="message2">
        Please try again in a few minutes.
      </p>
      <p class="small" id="detail">
        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
      </p>
    </section>
  </main>
  <script src="index.js"></script>
</body>
</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 Hastings, NE wrote its last area forecast discussion before this special weather statement went out at Aug 7, 6:09 PM CDT, 15 minutes earlier.

Area forecast discussion, Aug 7, 6:09 PM CDT, 15 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE HASTINGS NE
609 PM CDT TUE AUG 7 2012

.AVIATION...00Z TAF. WILL KEEP TEMPO MENTION OF THUNDERSTORMS
GOING AT THE TERMINAL FOR FOR A FEW HOURS AS THIS ACTIVITY
ASSOCIATED WITH AN UPPER LEVEL WAVE SHIFTS THROUGH THE REGION.
OTHERWISE...DRY WEATHER WITH VFR CONDITIONS EXPECTED...WITH
VARIABLE WINDS EARLIER ON...BEFORE SWITCHING TO THE NORTHWEST BY
LATE TOMORROW MORNING.

&&

.PREV DISCUSSION... /ISSUED 337 PM CDT TUE AUG 7 2012/

SHORT TERM...TONIGHT THROUGH WEDNESDAY.  FOCUS IS ON CONVECTIVE
POTENTIAL TONIGHT.  THE PATTERN ALOFT FEATURED AN UPPER RIDGE OF
HIGH PRESSURE EXTENDING FROM THE DESERT SOUTHWEST NORTHWARD ACROSS
THE ROCKIES.  ALONG THE EASTERN PERIPHERY OF THE RIDGE...NORTHWEST
FLOW WAS IN PLACE ACROSS THE CENTRAL PLAINS...WITH EMBEDDED
SHORTWAVE TROUGHS TRANSLATING SOUTHEAST THRU THE FLOW.  THIS
ACTIVITY HAS GENERATED SHOWERS AND STORMS TODAY AND AS AN UPSTREAM
WAVE NEAR THE NEB/SD STATE LINE TRANSLATES SOUTHEAST THIS
EVENING...ADDITIONAL CONVECTIVE DEVELOPMENT IS POSSIBLE HEADING INTO
THE EVENING.  SPC MESOANALYSIS INDICATES MLCAPES AROUND 2000 J/KG
AND LIMITED SHEAR...WITH SREF FORECAST PARAMETERS INDICATING SIMILAR
VALUES INTO THE EVENING.  IN THIS ENVIRONMENT...WE MAY
INTERMITTENTLY EXPERIENCE A STRONG TO MARGINALLY SEVERE STORM INTO
THE FIRST PART OF THE EVENING THEN TSTM CHCS DIMINISH HEADING INTO
TONIGHT.

A MORE PRONOUNCED SHORTWAVE TROUGH TRANSLATES SOUTHEAST ALONG THE
MISSOURI RIVER LATE TONIGHT AND WEDNESDAY WITH A FRONTAL BOUNDARY
SWITCHING WINDS NORTHERLY WEDNESDAY. DRIER AIR ADVECTS IN BEHIND
THE BOUNDARY WITH DPS DROPPING INTO THE 40S AND 50S. THE BOUNDARY
REACHES OUR SOUTHAST ZONES BY LATE AFTN WITH 12Z NAM AND 4KM SPC
WRF SUGGESTING AN OUTSIDE CHC FOR CONVECTION IN VCNTY OF BOUNDARY.
CONFIDENCE IN DEVELOPMENT IS NOT HIGH BUT SOMETHING TO KEEP AN EYE
ON.

REGARDING TEMPERATURES...LOW TEMPERATURES TONIGHT WILL AVERAGE IN
THE 60S IN A SIMILAR AIRMASS FROM THE PAST COUPLE OF NIGHTS. THE WARM
AIRMASS REMAINS IN PLACE ON WEDNESDAY WITH H85 TEMPS IN THE UPPER
20S CELSIUS. FORECAST SOUNDINGS INDICATE MIXING WELL ABOVE THIS IN
THE DRY AIRMASS AND EXPECT TEMPS TO CLIMB TO THE 90S FOR HIGHS.

FIRE WEATHER...RELATIVE HUMIDITY VALUES DROP TO THE LOW 20TH
PERCENTILE IN OUR WESTERN ZONES WEDNESDAY AFTERNOON AS DPS LOWER
AND TEMPS RISE...AND WINDS LOOK TO REMAIN JUST BELOW HEADLINE
CRITERIA. FOR NOW WILL JUST MENTION ELEVATED FIRE CONCERN IN HWO.

LONG TERM...WEDNESDAY NIGHT THROUGH TUESDAY.

AS THE UPPER LEVEL RIDGE CONTINUES TO AMPLIFY OVER THE COLORADO
ROCKIES REGION THROUGH THE SHORT TERM...AN UPPER LEVEL TROUGH WILL
CONTINUE TO DEEPEN OVER THE EASTERN HALF OF THE CONUS. THROUGH MUCH
OF THE MID TERM PERIOD...THE PLAINS REMAIN JUST ON THE WESTERN
PERIPHERY OF THE DEEPENING TROUGH AXIS...AND THUS MOST OF THE UPPER
LEVEL SHORT WAVES REMAIN EAST OF THE PLAINS. AT THE SURFACE...A
BROAD AREA OF HIGH PRESSURE WILL SINK ACROSS MUCH OF PLAINS REGIONS
INTO THE GREAT LAKES REGIONS THROUGH FRIDAY...WITH THE SURFACE RIDGE
AXIS SLOWLY SHIFTING EAST. NORTH WINDS CAN BE EXPECTED AHEAD OF THE
SURFACE RIDGE...BEFORE TURNING EASTWARD AS THE SURFACE HIGH SINKS
ACROSS THE UPPER MISSISSIPPI RIVER VALLEY. COOLER AIR WILL SLIDE
SOUTH WITH THE SURFACE HIGH...SLIDING ACROSS THE PLAINS FROM THE
EAST. WITH COOLER 850 TEMPERATURES RANGING IN THE MID TO UPPER
TEENS...HIGH TEMPERATURES ROUGHLY 5 DEGREES BELOW NORMAL CAN BE
EXPECTED. THUS...WENT WITH LOW TO MID 80S ACROSS MUCH OF THE CWA
WITH A FEW UPPER 80S ACROSS NORTH CENTRAL KANSAS BOTH THURSDAY AND FRIDAY.
WITH THE PLAINS SITUATED BETWEEN THE UPPER LEVEL SYSTEMS...A DRY
FORECAST IS EXPECTED THROUGHOUT THE MID TERM.

LOOKING TOWARDS THE LONG TERM PERIOD...THE UPPER LEVEL TROUGH WILL
SLOWLY DRIFT ACROSS THE OHIO RIVER VALLEY WHILE THE RIDGE BREAKS
DOWN ACROSS THE SOUTHWEST. A FEW UPPER LEVEL PERTURBATIONS WILL
LIKELY SLIDE THROUGH THE DAKOTAS DURING THE LONG TERM...WITH
POSSIBLE CHANCES FOR PRECIPITATION EXPECTED. BEGINNING SATURDAY
NIGHT...ONE SUCH WAVE WILL SLIDE ACROSS SOUTH DAKOTA...WHILE A
SURFACE LOW DEVELOPS OVER THE FRONT RANGE. MODELS REMAIN INCONSISTENT
THROUGHOUT THE LONG TERM ON PLACEMENT AND TIMING OF POPS...BUT AT
LEAST EXPECT SOME CHANCE FOR POPS IN THE PERIOD. DECIDED TO CONTINUE
WITH ALLBLEND POPS LEAVING SLIGHT TO CHANCE MENTION IN FRIDAY NIGHT
THROUGH SATURDAY...AS THE UPPER LEVEL WAVE AND DECENT POSITIVE
VORTICITY ADVECTION PER THE GFS SOLUTION SLIDES EASTWARD ACROSS THE PLAINS.

TOWARDS THE END OF THE PERIOD...A SECONDARY UPPER LEVEL TROUGH WILL
BEGIN TO DEEPEN ALONG THE WESTERN COAST...THUS SHIFTING THE UPPER
LEVEL RIDGE EASTWARD. ALTHOUGH MODELS TRY TO INDICATE SOME RIDGING
OVER THE PLAINS...NUMEROUS SHORT WAVES WILL LIKELY RIDE ALONG THE
UPPER PERIPHERY...COMBINED WITH SURFACE LOWS ALONG THE FRONT
RANGE...LIKELY GENERATING SOME CHANCES FOR POPS BY MIDWEEK. WHILE
DECIDED TO CONTINUE WITH ALL BLEND POPS IN THE PERIOD...CONFIDENCE
IS NOT HIGH REGARDING TIMING AND LOCATION OF POPS. AS THE GFS
SOLUTION SUGGESTS A MORE DAY TIME EVENT...WHILE THE ECMWF SUGGESTS A
MORE MONDAY NIGHT SOLUTION.

AS FOR TEMPERATURES IN THE LONG TERM...FAIRLY NORMAL TEMPERATURES
RETURN TO THE FORECAST AREA WITH ROUGHLY UPPER 80S TO LOWER 90S
EXPECTED.

&&

.GID WATCHES/WARNINGS/ADVISORIES...
NE...NONE.
KS...NONE.
&&

Hazardous weather outlook, Aug 7, 3:03 PM CDT, 3 hours 21 minutes before

HAZARDOUS WEATHER OUTLOOK...UPDATED
NATIONAL WEATHER SERVICE HASTINGS NE
303 PM CDT TUE AUG 7 2012

KSZ005>007-017>019-NEZ039>041-046>049-060>064-072>077-082>087-
081200-
PHILLIPS-SMITH-JEWELL-ROOKS-OSBORNE-MITCHELL-VALLEY-GREELEY-NANCE-
SHERMAN-HOWARD-MERRICK-POLK-DAWSON-BUFFALO-HALL-HAMILTON-YORK-
GOSPER-PHELPS-KEARNEY-ADAMS-CLAY-FILLMORE-FURNAS-HARLAN-FRANKLIN-
WEBSTER-NUCKOLLS-THAYER-
303 PM CDT TUE AUG 7 2012

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTH CENTRAL NEBRASKA AND
PORTIONS OF NORTH CENTRAL KANSAS.

.DAY ONE...TONIGHT.

SCATTERED THUNDERSTORMS ARE FORECAST INTO TONIGHT. ALTHOUGH WIDESPREAD
SEVERE WEATHER IS NOT EXPECTED...A STRONG TO SEVERE STORM IS
POSSIBLE. NICKEL TO QUARTER SIZE HAIL AND 50 TO 60 MPH WILL BE THE
PRIMARY HAZARDS FROM THE STORMS.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY.

ELEVATED FIRE DANGER CONDITIONS EXIST WEDNESDAY AFTERNOON FOR
LOCATIONS WEST OF A LINE FROM LEXINGTON TO PHILLIPSBURG.

THUNDERSTORMS ARE POSSIBLE ACROSS THE OUTLOOK AREA FRIDAY NIGHT
THROUGH SATURDAY NIGHT...AND AGAIN BOTH MONDAY AND TUESDAY.
CURRENTLY...THE PROBABILITY FOR SEVERE WEATHER WITH THE
THUNDERSTORM ACTIVITY APPEARS LOW.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED ON A LIMITED BASIS INTO THE
EVENING.

&&

MORE INFORMATION MAY BE OBTAINED AT THE FOLLOWING WEB PAGE:
   HTTP://WWW.WEATHER.GOV/HASTINGS  (ALL LOWERCASE)

In the hours before

Local storm report, Aug 7, 5:38 PM CDT, 46 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE HASTINGS NE
538 PM CDT TUE AUG 07 2012

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

0520 PM     HAIL             3 E WOLBACH             41.40N 98.33W
08/07/2012  E1.00 INCH       GREELEY            NE   PUBLIC

            HAIL UP TO THE SIZE OF QUARTERS STARTED FALLING AROUND
            520 PM...AND WAS STILL FALLING.

&&

ODER

Local storm report, Aug 7, 5:46 PM CDT, 38 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE HASTINGS NE
546 PM CDT TUE AUG 07 2012

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

0541 PM     HAIL             1 E WOLBACH             41.40N 98.37W
08/07/2012  E1.75 INCH       GREELEY            NE   COUNTY OFFICIAL

&&

PBEDA

Local storm report, Aug 7, 5:48 PM CDT, 36 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE HASTINGS NE
548 PM CDT TUE AUG 07 2012

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

0547 PM     HAIL             3 E WOLBACH             41.40N 98.33W
08/07/2012  E1.00 INCH       GREELEY            NE   PUBLIC

            QUARTER SIZE HAIL CURRENTLY FALLING. GROUND IS COMPLETELY
            COVERED AND VISIBILITY IS POOR DUE TO HAIL.

&&

SALTZMAN

Special weather statement, Aug 7, 6:14 PM CDT, 10 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE HASTINGS NE
614 PM CDT TUE AUG 7 2012

NEZ046-072345-
SHERMAN NE-
614 PM CDT TUE AUG 7 2012

...SIGNIFICANT WEATHER ADVISORY FOR EASTERN SHERMAN COUNTY UNTIL 645
PM CDT...

AT 612 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM NEAR LOUP CITY...OR 20 MILES SOUTH OF ORD...
MOVING SOUTHEAST AT 15 MPH.

HAIL UP TO THE SIZE OF NICKELS AND WIND GUSTS UP TO 50 MPH ARE
EXPECTED WITH THIS STORM.

LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE...
  LOUP CITY...
  SHERMAN RESERVOIR DAM...
  ASHTON...

IF THREATENING WEATHER APPROACHES YOUR AREA...TAKE SHELTER IN A
STURDY BUILDING.

LAT...LON 4125 9874 4123 9874 4111 9888 4129 9907
      4137 9894
TIME...MOT...LOC 2314Z 318DEG 14KT 4131 9896

Local storm report, Aug 7, 6:16 PM CDT, 8 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE HASTINGS NE
616 PM CDT TUE AUG 07 2012

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

0601 PM     HAIL             3 NW WOLBACH            41.43N 98.43W
08/07/2012  E1.75 INCH       GREELEY            NE   TRAINED SPOTTER

            GOLF BALL SIZED SHATTERED WINDSHIELD 3 NW OF WOLBACH.

&&

PBEDA

Special weather statement, Aug 7, 6:24 PM CDT, 0 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE HASTINGS NE
624 PM CDT TUE AUG 7 2012

NEZ040-080000-
GREELEY NE-
624 PM CDT TUE AUG 7 2012

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHERN GREELEY COUNTY UNTIL 700
PM CDT...

AT 621 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR WAS TRACKING A
STRONG THUNDERSTORM 6 MILES SOUTHWEST OF GREELEY...OR 20 MILES
SOUTHEAST OF ORD...MOVING SOUTHEAST AT 10 MPH.

HAIL UP TO THE SIZE OF NICKELS AND WIND GUSTS UP TO 50 MPH ARE
EXPECTED WITH THIS STORM...ALONG WITH HEAVY RAIN.

LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE...
MAINLY RURAL AREAS OF SOUTHERN GREELEY COUNTY.

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 4152 9831 4146 9844 4140 9861 4139 9869
      4149 9875 4152 9875 4164 9852
TIME...MOT...LOC 2324Z 317DEG 10KT 4147 9858

CHESTER

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 6, 11:05 PM CDT	Special Weather Statement	GID	Phelps	25 min
Aug 7, 12:43 AM CDT	Special Weather Statement	GID	Webster	32 min
Aug 7, 6:29 AM CDT	Special Weather Statement	GID	Adams	31 min
Aug 7, 7:00 AM CDT	Special Weather Statement	GID	Webster	30 min
Aug 7, 7:23 AM CDT	Severe Thunderstorm Warning	GID	Franklin, Webster	26 min
Aug 7, 8:08 AM CDT	Special Weather Statement	GID	Webster	37 min
Aug 7, 4:44 PM CDT	Special Weather Statement	GID	Nance	31 min
Aug 7, 5:16 PM CDT	Severe Thunderstorm Warning	GID	Greeley, Howard, Nance	29 min
Aug 7, 5:41 PM CDT	Severe Thunderstorm Warning	GID	Greeley, Howard, Merrick, Nance	34 min
Aug 7, 6:12 PM CDT	Severe Thunderstorm Warning	GID	Greeley, Howard, Merrick, Nance	33 min
Aug 7, 6:14 PM CDT	Special Weather Statement	GID	Sherman	31 min
Aug 7, 6:41 PM CDT	Severe Thunderstorm Warning	GID	Greeley, Howard	49 min
Aug 7, 9:16 AM CDT	Special Weather Statement	GID	Smith	29 min

Nearby

Special Weather Statements in Nebraska, 2012 Every 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.