Alert archive / Nebraska / Severe Thunderstorm Warnings in 2007

Severe Thunderstorm Warning 21, NWS Omaha, NE

March 21, 2007Gage County, Nebraska

NWS Omaha, NE issued this severe thunderstorm warning at Mar 21, 2007, 8:25 PM CDT for Gage County, Nebraska. It was in force for 50 min. 2 reports 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: Mar 21, 2007, 8:25 PM CDT (01:25 UTC)
Expired: Mar 21, 2007, 9:15 PM CDT
In force: 50 min
Issued by: NWS Omaha, NE
Area: Counties, with a storm outline in the text

County Gage County, NE

The radar

The Omaha radar (KOAX), 118 km from the middle of the area, began a volume at 01:27 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
Mar 21, 8:38 PM CDT	HAIL 0.88	1 E Beatrice, NE
Mar 21, 8:43 PM CDT	HAIL 0.88	Beatrice, 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
Mar 21, 5:15 PM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Omaha, NE (KOAX), launched 00:00Z, 1.4 hours before the alert went out and 118 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: 942 J/kg
Mixed-layer CIN: -112 J/kg
Mixed-layer LCL: 1009 m above ground
0-6 km bulk shear: 41 kt
0-1 km storm-relative helicity: 111 m²/s²
0-3 km storm-relative helicity: 253 m²/s²
Significant tornado parameter: 0.6
Supercell composite: 6.3

Open this sounding in Storm Lab

The text

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

000 
WUUS53 KOAX 220126
SVROAX
NEC067-220215-
/O.NEW.KOAX.SV.W.0021.070322T0125Z-070322T0215Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE OMAHA/VALLEY NEBRASKA
825 PM CDT WED MAR 21 2007

THE NATIONAL WEATHER SERVICE IN OMAHA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  GAGE COUNTY IN SOUTHEAST NEBRASKA...
  THIS INCLUDES THE CITY OF BEATRICE...

* UNTIL 915 PM CDT

* AT 823 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM.  THIS STORM WAS LOCATED 9 MILES SOUTHWEST     
  OF BEATRICE...AND MOVING EAST AT 30 MPH.  THIS STORM WAS PART OF A 
  LINE THAT EXTENDED NORTHEAST TO ADAMS...AND THE STORM NEAR ADAMS   
  COULD ALSO BE SEVERE.  ADAMS WAS ABOUT 15 MILES NORTHEAST OF       
  BEATRICE.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  BEATRICE BY 840 PM CDT...
  7 MILES NORTH OF WYMORE BY 845 PM CDT...
  6 MILES NORTH OF BLUE SPRINGS BY 850 PM CDT...

IF YOU ARE IN THE WARNED AREA...PREPARE FOR DAMAGING WINDS...LARGE
HAIL...HEAVY RAIN AND DANGEROUS LIGHTNING. GET INTO A REINFORCED
BUILDING. STAY AWAY FROM WINDOWS AND GLASS DOORS.

LAT...LON 4034 9691 4008 9690 4011 9646 4034 9646
      4053 9648

$$
CHERMOK

4 follow-up statements

000 
WWUS53 KOAX 220138
SVSOAX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE OMAHA/VALLEY NEBRASKA
836 PM CDT WED MAR 21 2007

NEC067-220215-
/O.CON.KOAX.SV.W.0021.000000T0000Z-070322T0215Z/
GAGE NE-
836 PM CDT WED MAR 21 2007

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 915 PM CDT
FOR GAGE COUNTY...

AT 835 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO 
INDICATE A LINE OF THUNDERSTORMS ALONG A LINE EXTENDING FROM ADAMS 
TO 8 MILES NORTH OF ODELL...OR ALONG A LINE EXTENDING FROM 17 MILES 
NORTHEAST OF BEATRICE TO 8 MILES SOUTHWEST OF BEATRICE...MOVING EAST 
AT 25 MPH.  THE STRONGEST PART OF THE LINE...NEAR BEATRICE...WILL 
LIKELY PRODUCE NICKEL SIZE HAIL THROUGH 845 PM.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
FILLEY...BLUE SPRINGS...VIRGINIA AND WYMORE

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL MIDNIGHT CDT
THURSDAY MORNING FOR SOUTHWESTERN IOWA.

LAT...LON 4028 9689 4002 9690 4015 9646 4034 9646
      4053 9648

$$

CHERMOK

000 
WWUS53 KOAX 220148
SVSOAX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE OMAHA/VALLEY NEBRASKA
847 PM CDT WED MAR 21 2007

NEC067-220215-
/O.CON.KOAX.SV.W.0021.000000T0000Z-070322T0215Z/
GAGE NE-
847 PM CDT WED MAR 21 2007

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 915 PM CDT
FOR GAGE COUNTY...

AT 843 PM CDT...EMERGENCY MANAGEMENT REPORTED A NICKEL SIZE HAIL 
JUST EAST OF BEATRICE.  THE STORM WAS MOVING EAST AT 25 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO BLUE
SPRINGS...FILLEY...ADAMS AND VIRGINIA

LAT...LON 4028 9689 4002 9690 4015 9646 4034 9646
      4053 9648

$$

CHERMOK

000 
WWUS53 KOAX 220204 RRA
SVSOAX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE OMAHA/VALLEY NEBRASKA
904 PM CDT WED MAR 21 2007

NEC067-220215-
/O.CON.KOAX.SV.W.0021.000000T0000Z-070322T0215Z/
GAGE NE-
904 PM CDT WED MAR 21 2007

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 915 PM CDT
FOR GAGE COUNTY...

AT 901 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING NICKEL SIZE HAIL.
 THIS STORM WAS LOCATED NEAR VIRGINIA...OR ABOUT 11 MILES EAST OF
BEATRICE...MOVING EAST AT 30 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO LIBERTY

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL MIDNIGHT CDT 
THURSDAY MORNING FOR SOUTHEAST NEBRASKA AND SOUTHWEST IOWA.

LAT...LON 4011 9689 4001 9689 4008 9645 4034 9646
      4035 9648

$$

CHERMOK

000 
WWUS53 KOAX 220220
SVSOAX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE OMAHA/VALLEY NEBRASKA
919 PM CDT WED MAR 21 2007

NEC067-220229-
/O.EXP.KOAX.SV.W.0021.000000T0000Z-070322T0215Z/
GAGE NE-
919 PM CDT WED MAR 21 2007

...THE SEVERE THUNDERSTORM WARNING FOR GAGE COUNTY EXPIRED AT 915 PM
CDT...

THE THUNDERSTORMS HAVE WEAKENED SLIGHTLY AS THEY MOVED TO NEAR 
LIBERTY AT 920 PM.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL MIDNIGHT CDT 
THURSDAY MORNING FOR SOUTHEAST NEBRASKA. 

LAT...LON 4011 9689 4001 9689 4008 9645 4034 9646
      4035 9648

$$

CHERMOK

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 21, 7:00 PM CDT	Severe Thunderstorm Warning	OAX	Cass, Lancaster	45 min
Mar 21, 7:17 PM CDT	Severe Thunderstorm Warning	OAX	Sarpy	43 min
Mar 21, 7:40 PM CDT	Severe Thunderstorm Warning	OAX	Cass	50 min
Mar 21, 7:44 PM CDT	Severe Thunderstorm Warning	OAX	Lancaster	31 min
Mar 21, 7:51 PM CDT	Severe Thunderstorm Warning	OAX	Jefferson	39 min
Mar 21, 8:17 PM CDT	Severe Thunderstorm Warning	OAX	Johnson, Otoe	43 min
Mar 21, 8:27 PM CDT	Severe Thunderstorm Warning	OAX	Cass	33 min
Mar 21, 8:58 PM CDT	Severe Thunderstorm Warning	OAX	Johnson	32 min
Mar 21, 9:24 PM CDT	Severe Thunderstorm Warning	OAX	Pawnee	36 min
Mar 21, 9:50 PM CDT	Severe Thunderstorm Warning	OAX	Nemaha	40 min
Mar 21, 9:58 PM CDT	Severe Thunderstorm Warning	OAX	Richardson	62 min

Nearby

Severe Thunderstorm Warnings in Nebraska, 2007 Every severe thunderstorm warning in 2007

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.