Alert archive / Nebraska / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 55, NWS North Platte, NE

May 4, 2012Garfield County, Loup County, Nebraska

NWS North Platte, NE issued this severe thunderstorm warning at May 4, 2012, 5:41 PM CDT for Garfield County, Loup County, Nebraska. It was in force for 49 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: May 4, 2012, 5:41 PM CDT (22:41 UTC)
Expired: May 4, 2012, 6:30 PM CDT
In force: 49 min
Issued by: NWS North Platte, NE
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Garfield County, NE, Loup County, NE

The radar

The North Platte radar (KLNX), 130 km from the middle of the area, began a volume at 22:45 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
May 4, 5:55 PM CDT	HAIL 1	10 Ne Burwell, NE

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
May 4, 2:00 PM CDT	Severe Thunderstorm Watch	SPC	9 hr

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 12:00Z, 10.7 hours before the alert went out and 157 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: 1902 J/kg
Mixed-layer CIN: -97 J/kg
Mixed-layer LCL: 750 m above ground
0-6 km bulk shear: 24 kt
0-1 km storm-relative helicity: 88 m²/s²
0-3 km storm-relative helicity: 198 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 6.1

Open this sounding in Storm Lab

The text

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

029 
WUUS53 KLBF 042241
SVRLBF
NEC071-115-042330-
/O.NEW.KLBF.SV.W.0055.120504T2241Z-120504T2330Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE NORTH PLATTE NE
541 PM CDT FRI MAY 4 2012

THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHERN GARFIELD COUNTY IN NORTH CENTRAL NEBRASKA...
  EAST CENTRAL LOUP COUNTY IN NORTH CENTRAL NEBRASKA...

* UNTIL 630 PM CDT

* AT 535 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
  DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED NEAR
  CALAMUS RESERVOIR STATE RECREATION AREA...OR 8 MILES NORTHWEST OF
  BURWELL...AND MOVING EAST AT 10 MPH.

* LOCATIONS IMPACTED INCLUDE...
  BURWELL...HIGHWAY 11 MILE MARKER 100 AND HIGHWAY 91 MILE MARKER 70.

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.

TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THIS STORM...AND MAY LEAD
TO FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.

&&

LAT...LON 4199 9882 4174 9882 4178 9929 4198 9930
TIME...MOT...LOC 2241Z 271DEG 13KT 4187 9921
WIND...HAIL 60MPH 1.00IN

$$

JACOBS

2 follow-up statements

446 
WWUS53 KLBF 042304
SVSLBF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
604 PM CDT FRI MAY 4 2012

NEC071-115-042330-
/O.CON.KLBF.SV.W.0055.000000T0000Z-120504T2330Z/
GARFIELD NE-LOUP NE-
604 PM CDT FRI MAY 4 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR EAST CENTRAL
LOUP AND SOUTHERN GARFIELD COUNTIES UNTIL 630 PM CDT...

AT 558 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL.  THIS
STORM WAS LOCATED 11 MILES NORTHEAST OF FORT HARTSUFF STATE PARK...OR
13 MILES NORTHEAST OF BURWELL...MOVING EAST AT 15 MPH.

IN ADDITION...AT 555 PM CDT QUARTER SIZE HAIL WAS REPORTED 10 MILES 
NORTHEAST OF BURWELL WITH THIS STORM.

LOCATIONS IMPACTED INCLUDE...
  MAINLY RURAL AREAS OF EASTERN GARFIELD COUNTY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THIS STORM...AND MAY LEAD
TO FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.

&&

LAT...LON 4198 9929 4199 9882 4174 9882 4183 9929
TIME...MOT...LOC 2303Z 271DEG 13KT 4187 9889
WIND...HAIL <50MPH 1.00IN

$$

JACOBS

669 
WWUS53 KLBF 042327
SVSLBF

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
627 PM CDT FRI MAY 4 2012

NEC071-115-042337-
/O.EXP.KLBF.SV.W.0055.000000T0000Z-120504T2330Z/
GARFIELD NE-LOUP NE-
627 PM CDT FRI MAY 4 2012

...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL LOUP AND SOUTHERN
GARFIELD COUNTIES WILL EXPIRE AT 630 PM CDT...

THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED
AREA.

ADDITIONAL STRONG THUNDERSTORMS ARE STILL POSSIBLE...AND A SEVERE 
THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 9 PM CDT.

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 4198 9929 4199 9882 4174 9882 4183 9929
TIME...MOT...LOC 2327Z 271DEG 13KT 4187 9877

$$

BUTTLER

The office that day

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

Issued	Product	Office	Counties	Lasted
May 4, 3:14 AM CDT	Dense Fog Advisory	LBF	Arthur, Chase, Custer, Deuel, Frontier, Hayes and 5 more	3 hr
May 4, 3:34 PM CDT	Severe Thunderstorm Warning	LBF	Boyd, Holt	41 min
May 4, 3:50 PM CDT	Severe Thunderstorm Warning	LBF	Cherry, Hooker	40 min
May 4, 4:14 PM CDT	Severe Thunderstorm Warning	LBF	Boyd, Holt	16 min
May 4, 4:35 PM CDT	Severe Thunderstorm Warning	LBF	Blaine, Loup	40 min
May 4, 4:44 PM CDT	Severe Thunderstorm Warning	LBF	Cherry, Hooker, Thomas	27 min
May 4, 5:10 PM CDT	Severe Thunderstorm Warning	LBF	Loup	50 min
May 4, 5:24 PM CDT	Tornado Warning	LBF	Loup	36 min
May 4, 5:50 PM CDT	Severe Thunderstorm Warning	LBF	Custer, Garfield, Loup	29 min
May 4, 6:10 PM CDT	Severe Thunderstorm Warning	LBF	Garfield, Wheeler	50 min
May 4, 6:32 PM CDT	Tornado Warning	LBF	Garfield, Wheeler	28 min

Nearby

Severe Thunderstorm Warnings in Nebraska, 2012 Every severe thunderstorm warning 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.