Alert archive / Nebraska / Flash Flood Warnings in 2010
Flash Flood Warning 21, NWS North Platte, NE
NWS North Platte, NE issued this flash flood warning at Jul 22, 2010, 12:24 AM CDT for Boyd County, Holt County, Nebraska. It was in force for 12 hr. 4 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
- Jul 22, 2010, 12:24 AM CDT (05:24 UTC)
- Expired
- Jul 22, 2010, 12:30 PM CDT
- In force
- 12 hr
- Issued by
- NWS North Platte, NE
- Area
- Storm-based polygon
- Flood severity
- None
Counties Boyd County, NE, Holt County, NE
The radar
The Sioux Falls radar (KFSD), 175 km from the middle of the area, began a volume at 05:24 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 |
|---|---|---|---|
| Jul 22, 3:39 AM CDT | FLASH FLOOD | 3 W Lynch, NE | HIGHWAY 12 BETWEEN BRISTOW AND LYNCH UNDERWATER. |
| Jul 22, 3:39 AM CDT | FLASH FLOOD | 9 N Stuart, NE | PAVED ROAD WASHED OUT 9 MILES NORTH OF STUART. |
| Jul 22, 3:39 AM CDT | HEAVY RAIN 5 | 16 N O'Neill, NE | FIVE INCHES OF RAINFALL MEASURED 16 MILES NORTH OF ONEILL. |
| Jul 22, 8:18 AM CDT | FLOOD | 12 N Stuart, NE | DELAYED REPORT FROM THE DEPT OF ROADS. REPORT OF 9 INCHES OF RAINFALL 12 MILES NORTH OF STUART. NUMEROUS COUNTY ROADS WASHED OUT IN NORTHERN HOLT COUNTY THIS MORNING. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Aberdeen, SD (KABR), launched 00:00Z, 5.4 hours before the alert went out and 227 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.
- Mixed-layer CAPE
- 481 J/kg
- Mixed-layer CIN
- -9 J/kg
- Mixed-layer LCL
- 1013 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km storm-relative helicity
- 71 m²/s²
- 0-3 km storm-relative helicity
- 219 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
817
WGUS53 KLBF 220524
FFWLBF
NEC015-089-221730-
/O.NEW.KLBF.FF.W.0021.100722T0524Z-100722T1730Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE NORTH PLATTE NE
1224 AM CDT THU JUL 22 2010
THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS ISSUED A
* FLASH FLOOD WARNING FOR RAPID RIVER RISES IN...
BOYD COUNTY IN NORTH CENTRAL NEBRASKA...
NORTHERN HOLT COUNTY IN NORTH CENTRAL NEBRASKA...
* UNTIL 1230 PM CDT
* AT 1216 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR
INDICATED SLOW MOVING THUNDERSTORMS WITH VERY HEAVY RAINFALL
CONTINUE ACROSS THE WARNED AREA. RAINFALL ESTIMATES OF 3 TO
LOCALLY ABOVE 6 INCHES HAS ALREADY ACROSS NORTHERN HOLT COUNTY AND
SOUTHERN BOYD COUNTY.
* RUNOFF FROM THIS EXCESSIVE RAINFALL MAY CAUSE FLASH FLOODING TO
OCCUR. SOME LOCATIONS THAT MAY EXPERIENCE FLOODING INCLUDE...
SPENCER...ANOKA...BRISTOW...BUTTE...GROSS...HULL LAKE STATE
WILDLIFE MANAGEMENT AREA...LYNCH...MIDWAY...MONOWI...PARSHALL
BRIDGE STATE WILDLIFE MANAGEMENT AREA...REDBIRD STATE WILDLIFE
MANANGEMENT AREA AND SPENCER DAM.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
ADDITIONAL RAINFALL AMOUNTS OF 1 TO 2 INCHES ARE STILL POSSIBLE IN
THE WARNED AREA.
FLOOD WATERS HAVE CAUSED SPENCER DAM TO REACH CAPACITY. THIS IS
RESULTING IN INCREASED RELEASES DOWNSTREAM ALONG THE NIOBRARA RIVER.
AS A RESULT...FLOODING MAY OCCUR DOWNSTREAM ALONG THE NIOBRARA
RIVER.
OTHER CREEKS AND STREAMS IN ADDITION TO COUNTY ROADS IN THE WARNED
AREA MAY ALSO EXPERIENCE FLOODING.
A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY.
RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE
PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO CROSS
SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR BY
AUTOMOBILE.
&&
LAT...LON 4294 9845 4293 9839 4288 9830 4261 9830
4261 9924 4288 9924 4300 9893 4300 9850
$$
ROBERG3 follow-up statements
488
WGUS73 KLBF 220903
FFSLBF
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
403 AM CDT THU JUL 22 2010
NEC015-089-221730-
/O.CON.KLBF.FF.W.0021.000000T0000Z-100722T1730Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
HOLT NE-BOYD NE-
403 AM CDT THU JUL 22 2010
...FLASH FLOOD WARNING FOR RAPID RIVER RISES REMAINS IN EFFECT FOR
BOYD AND NORTHERN HOLT COUNTIES UNTIL 1230 PM CDT...
AT 353 AM CDT...LOCAL LAW ENFORCEMENT OFFICIALS REPORTED THAT
SEVERAL ROADS HAVE BEEN WASHED OUT FROM RECENT FLASH FLOODING. THIS
INCLUDES A PAVED ROAD APPROXIMATELY 9 MILES NORTH OF STUART. IN
ADDITION...WATER REMAINS OVER HIGHWAY 20 BETWEEN BRISTOW AND LYNCH.
SOME AREA CREEKS AND STREAMS ARE STILL FLOODING INCLUDING BIG SANDY
CREEK...BRUSH CREEK AND TURKEY CREEK.
SOME LOCATIONS THAT MAY EXPERIENCE FLOODING INCLUDE...SPENCER...
ANOKA...BRISTOW...BUTTE...GROSS...HULL LAKE STATE WILDLIFE MANAGEMENT
AREA...LYNCH...MIDWAY...MONOWI...PARSHALL BRIDGE STATE WILDLIFE
MANAGEMENT AREA...REDBIRD STATE WILDLIFE MANANGEMENT AREA AND SPENCER
DAM.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
FLOOD WATERS HAVE CAUSED SPENCER DAM TO REACH CAPACITY. THIS IS
RESULTING IN HIGH RELEASES DOWNSTREAM ALONG THE NIOBRARA RIVER. AS A
RESULT...FLOODING MAY ALSO OCCUR DOWNSTREAM ALONG THE NIOBRARA RIVER.
DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY.
A FLASH FLOOD WARNING MEANS THAT FLASH FLOODING IS IMMINENT OR
OCCURRING. IF YOU ARE IN THE WARNING AREA...MOVE TO HIGHER GROUND
IMMEDIATELY. RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE
IMMEDIATE PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO
CROSS SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR BY
AUTOMOBILE.
&&
LAT...LON 4294 9845 4293 9839 4288 9830 4261 9830
4261 9924 4288 9924 4300 9893 4300 9850
$$
ROBERG821
WGUS73 KLBF 221411
FFSLBF
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
911 AM CDT THU JUL 22 2010
NEC015-089-221730-
/O.CON.KLBF.FF.W.0021.000000T0000Z-100722T1730Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
HOLT NE-BOYD NE-
911 AM CDT THU JUL 22 2010
...FLASH FLOOD WARNING FOR RAPID RIVER RISES REMAINS IN EFFECT FOR
BOYD AND NORTHERN HOLT COUNTIES UNTIL 1230 PM CDT...
AT 8 AM CDT...DEPARTMENT OF ROADS INDICATED NUMEROUS COUNTY ROADS
WERE WASHED OUT OR WERE OVER TOPPED WITH WATER IN NORTHERN HOLT AND
SOUTHERN BOYD COUNTY.
FLOODING IS OCCURRING ALONG PONCA CREEK IN EASTERN BOYD COUNTY
AFFECTING LOW LYING AREAS IN LYNCH.
SPENCER DAM HAS REACHED CAPACITY...RESULTING IN HIGH RELEASES OF
WATER DOWNSTREAM OF THE DAM. THESE HIGH RELEASES WILL LEAD TO
FLOODING ALONG THE NIOBRARA RIVER DOWNSTREAM OF SPENCER DAM. PERSONS
ALONG THE NIOBRARA RIVER DOWNSTREAM OF SPENCER DAM SHOULD BE
PREPARED FOR IMMINENT FLOODING.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
EXCESSIVE RUNOFF FROM THIS STORM WILL CAUSE FLOODING OF SMALL CREEKS
AND STREAMS...COUNTRY ROADS...NORMALLY DRY WASHES... AS WELL AS
FARMLAND ALONG THE BANKS OF CREEKS AND STREAMS.
DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY.
A FLASH FLOOD WARNING MEANS THAT FLASH FLOODING IS IMMINENT OR
OCCURRING. RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE
IMMEDIATE PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO
CROSS SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR BY
AUTOMOBILE.
REPORT FLOODING TO THE NEAREST LAW ENFORCEMENT AGENCY SO THAT THEY
MAY TAKE APPROPRIATE ACTION TO CLOSE FLOODED ROADWAYS. THEY WILL
RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE IN NORTH PLATTE.
&&
LAT...LON 4294 9845 4293 9839 4288 9830 4261 9830
4261 9924 4288 9924 4300 9893 4300 9850
$$
BUTTLER598
WGUS73 KLBF 221733
FFSLBF
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE NORTH PLATTE NE
1233 PM CDT THU JUL 22 2010
NEC015-089-221743-
/O.EXP.KLBF.FF.W.0021.000000T0000Z-100722T1730Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
HOLT NE-BOYD NE-
1233 PM CDT THU JUL 22 2010
...THE FLASH FLOOD WARNING THAT WAS IN EFFECT FOR BOYD AND NORTHERN
HOLT COUNTIES WILL BE ALLOWED TO EXPIRE AT 1230 PM CDT...
ALTHOUGH THE THREAT FOR FLASH FLOODING HAS ENDED ACROSS HOLT AND
BOYD COUNTIES...SEVERAL COUNTY ROADS IN NORTHWESTERN HOLT COUNTY HAVE BEEN
WASHED OUT OR REMAIN COVERED WITH WATER THROUGH THE PRESENT TIME.
AN AREAL FLOOD WARNING WILL BE ISSUED FOR HOLT COUNTY SHORTLY.
IN ADDITION...VERY HIGH RELEASES OF WATER FROM SPENCER DAM...HAVE
RESULTED IN SOME DOWN STREAM FLOODING ALONG THE NIOBRARA
RIVER...AFFECTING LOW LYING AREAS IN FAR NORTHEASTERN HOLT COUNTY.
THIS FLOODING IS EXPECTED TO CONTINUE THROUGH TONIGHT.
IF FLOODING HAS BEEN OBSERVED...PLEASE REPORT IT TO YOUR LOCAL LAW
ENFORCEMENT AGENCY.
LAT...LON 4294 9845 4293 9839 4288 9830 4261 9830
4261 9924 4288 9924 4300 9893 4300 9850
$$
BUTTLERThe office that day
Everything else NWS North Platte, NE issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 21, 8:03 PM CDT | Severe Thunderstorm Warning | LBF | Chase, Perkins | 42 min |
| Jul 21, 8:22 PM CDT | Tornado Warning | LBF | Chase | 23 min |
| Jul 21, 9:51 PM CDT | Areal Flood Advisory | LBF | Boyd, Holt, Keya Paha, Rock | 3 hr |
| Jul 21, 10:15 PM CDT | Flash Flood Warning | LBF | Holt | 4 hr |
| Jul 22, 12:45 PM CDT | Areal Flood Warning | LBF | Holt | 6 hr |
| Jul 22, 3:39 PM CDT | Flood Watch | LBF | Boyd, Holt, Keya Paha, Rock | 31 hr |
Nearby
Flash Flood Warnings in Nebraska, 2010Every flash flood warning in 2010
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.