Alert archive / Nebraska / Frost Advisories in 2012

Frost Advisory 4, NWS North Platte, NE

September 22, 201213 counties in Nebraska

NWS North Platte, NE issued this frost advisory at Sep 22, 2012, 4:08 AM CDT for 13 counties in Nebraska. It took effect at Sep 23, 2012, 3:00 AM CDT. It was in force for 6 hr.

The area

The counties it named.

The facts

Issued
Sep 22, 2012, 4:08 AM CDT (09:08 UTC)
In effect from
Sep 23, 2012, 3:00 AM CDT
Expired
Sep 23, 2012, 8:56 AM CDT
In force
6 hr
Issued by
NWS North Platte, NE

Counties Blaine County, NE, Boyd County, NE, Brown County, NE, Cherry County, NE, Custer County, NE, Garfield County, NE, Holt County, NE, Keya Paha County, NE, Logan County, NE, Loup County, NE, Rock County, NE, Thomas County, NE, Wheeler County, NE

The radar

The North Platte radar (KLNX), 80 km from the middle of the area, began a volume at 09:06 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 00:00Z, 9.1 hours before the alert went out and 140 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-pSkew-T log-p diagram, N. Platte/Lee Bi, NE at 00:00Z on 2012-09-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, N. Platte/Lee Bi, NE at 00:00Z on 2012-09-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 26 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
3291 m above ground
0-6 km bulk shear
34 kt
0-1 km storm-relative helicity
26 m²/s²
0-3 km storm-relative helicity
120 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.

291 
WWUS73 KLBF 220908
NPWLBF

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE NORTH PLATTE NE
408 AM CDT SAT SEP 22 2012

...FROST ADVISORY FOR PORTIONS OF CENTRAL AND NORTH CENTRAL
NEBRASKA LATE TONIGHT AND EARLY SUNDAY MORNING...

.COLD HIGH PRESSURE WILL MOVE SOUTH INTO THE NORTHERN PLAINS AND
UPPER MIDWEST LATE TONIGHT INTO SUNDAY MORNING. UNDER THE HIGH
PRESSURE AREA...SKIES WILL BE MAINLY CLEAR OVERNIGHT TONIGHT AND
WINDS WILL BECOME LIGHT. THIS WILL ALLOW TEMPERATURES TO DROP INTO
THE UPPER 20S TO LOWER 30S BY EARLY SUNDAY MORNING. APPROPRIATE
ACTION SHOULD BE TAKEN TO PROTECT TENDER VEGETATION.

NEZ005>010-025>029-037-038-221715-
/O.NEW.KLBF.FR.Y.0004.120923T0800Z-120923T1400Z/
EASTERN CHERRY-KEYA PAHA-BOYD-BROWN-ROCK-HOLT-THOMAS-BLAINE-LOUP-
GARFIELD-WHEELER-LOGAN-CUSTER-
INCLUDING THE CITIES OF...VALENTINE...SPRINGVIEW...SPENCER...
AINSWORTH...BASSETT...ONEILL...THEDFORD...DUNNING...TAYLOR...
BURWELL...BARTLETT...STAPLETON...BROKEN BOW
408 AM CDT SAT SEP 22 2012

...FROST ADVISORY IN EFFECT FROM 3 AM TO 9 AM CDT SUNDAY...

THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS ISSUED A FROST
ADVISORY...WHICH IS IN EFFECT FROM 3 AM TO 9 AM CDT SUNDAY. 

* TEMPERATURE...LOWS SUNDAY MORNING IN THE UPPER 20S TO LOW 30S.

* IMPACTS...FROST WILL LIKELY DEVELOP...ESPECIALLY IN LOW LYING
  AREAS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FROST ADVISORY MEANS THAT FROST IS POSSIBLE. SENSITIVE OUTDOOR
PLANTS MAY BE KILLED IF LEFT UNCOVERED.

&&

$$

JWS
3 follow-up statements
971 
WWUS73 KLBF 222002
NPWLBF

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE NORTH PLATTE NE
302 PM CDT SAT SEP 22 2012

...FROST ADVISORY FOR PORTIONS OF CENTRAL AND NORTH CENTRAL
NEBRASKA LATE TONIGHT AND EARLY SUNDAY MORNING...

.COLD HIGH PRESSURE WILL MOVE SOUTH INTO THE NORTHERN PLAINS AND
UPPER MIDWEST LATE TONIGHT INTO SUNDAY MORNING. UNDER THE HIGH
PRESSURE AREA...SKIES WILL BE MAINLY CLEAR OVERNIGHT TONIGHT AND
WINDS WILL BECOME LIGHT. THIS WILL ALLOW TEMPERATURES TO DROP
INTO THE UPPER 20S TO LOWER 30S BY EARLY SUNDAY MORNING.
APPROPRIATE ACTION SHOULD BE TAKEN TO PROTECT TENDER VEGETATION.

NEZ005>010-025>029-037-038-230415-
/O.CON.KLBF.FR.Y.0004.120923T0800Z-120923T1400Z/
EASTERN CHERRY-KEYA PAHA-BOYD-BROWN-ROCK-HOLT-THOMAS-BLAINE-LOUP-
GARFIELD-WHEELER-LOGAN-CUSTER-
INCLUDING THE CITIES OF...VALENTINE...SPRINGVIEW...SPENCER...
AINSWORTH...BASSETT...ONEILL...THEDFORD...DUNNING...TAYLOR...
BURWELL...BARTLETT...STAPLETON...BROKEN BOW
302 PM CDT SAT SEP 22 2012

...FROST ADVISORY REMAINS IN EFFECT FROM 3 AM TO 9 AM CDT
SUNDAY...

A FROST ADVISORY REMAINS IN EFFECT FROM 3 AM TO 9 AM CDT SUNDAY. 

* TEMPERATURE...LOWS SUNDAY MORNING IN THE UPPER 20S TO LOW 30S.

* IMPACTS...FROST WILL LIKELY DEVELOP...ESPECIALLY IN LOW LYING
  AREAS SUCH AS RIVER BASINS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FROST ADVISORY MEANS THAT FROST IS POSSIBLE. SENSITIVE OUTDOOR
PLANTS MAY BE KILLED IF LEFT UNCOVERED.

&&

$$

JACOBS
517 
WWUS73 KLBF 230835
NPWLBF

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE NORTH PLATTE NE
335 AM CDT SUN SEP 23 2012

...FROST ADVISORY CONTINUES FOR PORTIONS OF CENTRAL AND NORTH
CENTRAL NEBRASKA EARLY THIS MORNING...

.COLD HIGH PRESSURE WILL CONTINUE TO SETTLE ACROSS THE AREA
THROUGH THIS MORNING...BUT WILL MOVE EAST BY AFTERNOON. THIS WILL
ALLOW TEMPERATURES TO DROP INTO THE UPPER 20S TO LOWER 30S THROUGH
9 AM CDT THIS MORNING. HOWEVER...TEMPERATURES ARE EXPECTED TO WARM
QUICKLY LATER THIS MORNING UNDER MAINLY SUNNY SKIES. 

NEZ005>010-025>029-037-038-231400-
/O.CON.KLBF.FR.Y.0004.000000T0000Z-120923T1400Z/
EASTERN CHERRY-KEYA PAHA-BOYD-BROWN-ROCK-HOLT-THOMAS-BLAINE-LOUP-
GARFIELD-WHEELER-LOGAN-CUSTER-
INCLUDING THE CITIES OF...VALENTINE...SPRINGVIEW...SPENCER...
AINSWORTH...BASSETT...ONEILL...THEDFORD...DUNNING...TAYLOR...
BURWELL...BARTLETT...STAPLETON...BROKEN BOW
335 AM CDT SUN SEP 23 2012

...FROST ADVISORY REMAINS IN EFFECT UNTIL 9 AM CDT THIS MORNING...

A FROST ADVISORY REMAINS IN EFFECT UNTIL 9 AM CDT THIS MORNING. 

* TEMPERATURE...LOWS THIS MORNING IN THE UPPER 20S TO LOW 30S NEAR
  SUNRISE. TEMPERATURES WILL WARM QUICKLY THROUGH THE MORNING HOWEVER.

* IMPACTS...FROST WILL LIKELY DEVELOP...ESPECIALLY IN LOW LYING 
  AREAS SUCH AS RIVER BASINS. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FROST ADVISORY MEANS THAT FROST IS POSSIBLE. SENSITIVE OUTDOOR
PLANTS MAY BE KILLED IF LEFT UNCOVERED.

&&

$$

JWS
699 
WWUS73 KLBF 231356
NPWLBF

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE NORTH PLATTE NE
856 AM CDT SUN SEP 23 2012

...FROST ADVISORY IS CANCELLED...

.THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS CANCELLED THE
FROST ADVISORY. TEMPERATURES HAVE WARMED INTO THE MID TO UPPER 30S
ACROSS THE REGION...ENDING THE THREAT FOR ADDITIONAL FROST.

NEZ005>010-025>029-037-038-231500-
/O.CAN.KLBF.FR.Y.0004.000000T0000Z-120923T1400Z/
EASTERN CHERRY-KEYA PAHA-BOYD-BROWN-ROCK-HOLT-THOMAS-BLAINE-LOUP-
GARFIELD-WHEELER-LOGAN-CUSTER-
INCLUDING THE CITIES OF...VALENTINE...SPRINGVIEW...SPENCER...
AINSWORTH...BASSETT...ONEILL...THEDFORD...DUNNING...TAYLOR...
BURWELL...BARTLETT...STAPLETON...BROKEN BOW
856 AM CDT SUN SEP 23 2012

...FROST ADVISORY IS CANCELLED...

THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS CANCELLED THE
FROST ADVISORY. 

TEMPERATURES HAVE WARMED INTO THE MID TO UPPER 30S THIS
MORNING...ENDING THE THREAD OF FROST. 

$$

JACOBS

Nearby

Frost Advisories in Nebraska, 2012Every frost advisory 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.