Alert archive / Nebraska / Severe Thunderstorm Warnings in 2001
Severe Thunderstorm Warning 185, NWS North Platte, NE
NWS North Platte, NE issued this severe thunderstorm warning at Jul 17, 2001, 1:28 PM CDT for Brown County, Keya Paha County, Nebraska. It was in force for 62 min. 1 report came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Jul 17, 2001, 1:28 PM CDT (18:28 UTC)
- Expired
- Jul 17, 2001, 2:30 PM CDT
- In force
- 62 min
- Issued by
- NWS North Platte, NE
- Area
- Whole counties
Counties Brown County, NE, Keya Paha County, NE
The radar
The North Platte radar (KLNX), 99 km from the middle of the area, began a volume at 18:30 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 17, 1:45 PM CDT | Hail 0.75 | Springview, NE |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.
The nearest sounding before it
N. Platte/Lee Bi, NE (KLBF), launched 12:00Z, 6.5 hours before the alert went out and 181 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
- 727 J/kg
- Mixed-layer CIN
- -340 J/kg
- Mixed-layer LCL
- 2212 m above ground
- 0-6 km bulk shear
- 42 kt
- 0-1 km storm-relative helicity
- 98 m²/s²
- 0-3 km storm-relative helicity
- 187 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.5
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS North Platte, NE wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 17, 12:15 PM CDT, 1 hour 13 minutes earlier.
Area forecast discussion, Jul 17, 12:15 PM CDT, 1 hour 13 minutes before
AREA FORECAST DISCUSSION...PRELIMINARY
NATIONAL WEATHER SERVICE NORTH PLATTE NE
1215 PM CDT TUE JUL 17 2001
FORECAST FOR TONIGHT...
THERE IS PLENTY OF DEEP MOISTURE AVAILABLE IN CENTRAL AND EASTERN
NEBRASKA WITH SURFACE DEWPOINTS OF 65F OR HIGHER AND 850MB
DEWPOINTS OF 10-14C. THE 12Z ETA HAS 180AGL BASED POSITIVE ENERGY
OF 3000-4200J/KG EAST OF VALENTINE-BRADY. IT APPEARS THAT THE
VERTICAL WIND PROFILES AND INSTABILITY WILL FAVOR BACK BUILDING
STORMS ONCE AGAIN. THE CONVECTION IN IN SOUTH DAKOTA AND KEYA
PAHACOUNTY SHOULD GENERATE A BOUNDARY THAT WOULD SERVE AS A FOCUS
FOR NEW CONVECTION TONIGHT. AS MUCH AS 7.7 INCHES HAS BEEN REPORTED
IN NORTHERN ROCK COUNTY IN LAST NIGHTS CONVECTION. THAT WAS VERY
CLOSE TO THE KLNX WSR-88D DERIVED STORM TOTAL. AS OF 1145 THIS
MORNING...THE RADAR TOTALS INDICATE AS MUCH AS 2.5 INCHES IN
NORTHWEST KEYA PAHA COUNTY. THE THREE HOURLY FLASH FLOOD GUIDANCE IS
LESS THAN 2 INCHES OVER KEYA PAHA, BOYD, HOLT, AND ROCK CONTIES.
BARRING ANY INDICATION THAT CONVECTION WILL NOT DEVELOP UP THERE...
A FLASH FLOOD WATCH WILL BE NEEDED.
THE REST OF THE DISCUSSION WILL BE ISSUED LATER THIS AFTERNOON.
.LBF...FLASH FLOOD WATCH NEZ006-007-009-010.
SPRINGERIn the hours before
Local storm report, Jul 17, 9:10 AM CDT, 4 hours 18 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORTH PLATTE, NE
910 AM CDT TUE JUL 17 2001...CORRECTED DATE
TIME(CDT) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0530 PM 6 N NEWPORT NE FLASH FLOODS
07/16/01 ROCK 7.70 INCHES OF RAIN FELL
OVER A 3.5 HOUR PERIOD
DURING THE LATE AFTERNOON.
REPORTED BY SPOTTERS.
JMLocal storm report, Jul 17, 10:12 AM CDT, 3 hours 16 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORTH PLATTE, NE
1012 AM CDT TUE JUL 17 2001
TIME(CDT) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0530 PM 11 NNE NEWPORT NE 1.00 INCH HAIL
07/16/01 ROCK REPORTED BY SPOTTERS
0630 PM 6 ENE PAGE NE 1.75 INCH HAIL
07/16/01 HOLT REPORTED BY SPOTTERS
0800 PM 7 SW EWING NE .88 INCH HAIL
07/16/01 HOLT REPORTED BY SPOTTERS
JZSpecial weather statement, Jul 17, 11:33 AM CDT, 1 hour 55 minutes before
NEZ004>010-022>029-035>038-056>059-069>071-172045- SEVERE WEATHER OUTLOOK FOR WESTERN AND NORTH CENTRAL NEBRASKA NATIONAL WEATHER SERVICE NORTH PLATTE NE 1133 AM CDT TUE JUL 17 2001 ...SPOTTER ACTIVATION MAY BE NEEDED OVER PORTIONS OF WESTERN AND NORTH CENTRAL NEBRASKA THIS AFTERNOON AND EVENING... THERE IS A CHANCE OF SEVERE THUNDERSTORMS THIS AFTERNOON AND EVENING...MAINLY ALONG AND EAST OF HIGHWAY 83. OTHER THUNDERSTORMS MAY DEVELOP ACROSS AREAS WEST OF HIGHWAY 83...BUT ARE NOT EXPECTED TO REACH SEVERE LIMITS. A SURFACE TROUGH OF LOW PRESSURE LOCATED ACROSS NEBRASKA WILL ALLOW ABUNDANT MOISTURE TO REMAIN IN PLACE OVER WESTERN AND NORTH CENTRAL PORTIONS OF THE OUTLOOK AREA. AFTERNOON TEMPERATURES WILL RETURN INTO THE 90S...ALLOWING THE ATMOSPHERE TO BECOME MODERATELY UNSTABLE. THUNDERSTORMS WHICH DEVELOP MAY QUICKLY REACH SEVERE LIMITS WITH LARGE HAIL AND DAMAGING WINDS THE PRIMARY THREATS. DP
Local storm report, Jul 17, 11:45 AM CDT, 1 hour 43 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORTH PLATTE, NE
1145 AM CDT TUE JUL 17 2001
TIME(CDT) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0700 PM 2 SE EWING NE 1.75 INCH HAIL
07/16/01 HOLT REPORTED BY SPOTTERS
0715 PM 1 SE EWING NE WIND DAMAGE
BARN AND GRAIN BIN
DESTROYED.
REPORTED BY SPOTTERS
0715 PM 2 SE EWING NE WIND DAMAGE
ON HOLT/ANTELOPE CNTY
LINE. 100 TREES DAMAGED
WITH 25-30 TREES UPROOTED.
REPORTED BY SPOTTERS
0715 PM 2 SE EWING NE WIND DAMAGE
ON HOLT/ANTELOPE CNTY
LINE. MACHINE SHED
DAMAGED.
REPORTED BY SPOTTERSZ
JZLocal storm report, Jul 17, 11:55 AM CDT, 1 hour 33 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE NORTH PLATTE, NE
1155 AM CDT TUE JUL 17 2001...ADDED DATES TO REPORTS
TIME(CDT) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0700 PM 2 SE EWING NE 1.75 INCH HAIL
07/16/01 HOLT REPORTED BY SPOTTERS
0715 PM 1 SE EWING NE WIND DAMAGE
07/16/01 BARN AND GRAIN BIN
DESTROYED.
REPORTED BY SPOTTERS
0715 PM 2 SE EWING NE WIND DAMAGE
07/16/01 ON HOLT/ANTELOPE CNTY
LINE. 100 TREES DAMAGED
WITH 25-30 TREES UPROOTED.
REPORTED BY SPOTTERS
0715 PM 2 SE EWING NE WIND DAMAGE
07/16/01 ON HOLT/ANTELOPE CNTY
LINE. MACHINE SHED
] DAMAGED.
REPORTED BY SPOTTERS
JZThe office that day
Everything else NWS North Platte, NE issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 16, 7:45 PM CDT | Severe Thunderstorm Warning | LBF | Holt | 30 min |
| Jul 16, 9:16 PM CDT | Severe Thunderstorm Warning | LBF | Wheeler | 29 min |
| Jul 17, 1:05 PM CDT | Severe Thunderstorm Warning | LBF | Cherry | 40 min |
| Jul 17, 5:09 PM CDT | Severe Thunderstorm Warning | LBF | Rock | 66 min |
| Jul 17, 5:51 PM CDT | Tornado Warning | LBF | Rock | 24 min |
| Jul 17, 6:08 PM CDT | Tornado Warning | LBF | Loup | 52 min |
| Jul 17, 6:16 PM CDT | Severe Thunderstorm Warning | LBF | Rock | 29 min |
| Jul 17, 6:34 PM CDT | Severe Thunderstorm Warning | LBF | Holt | 56 min |
| Jul 17, 6:56 PM CDT | Severe Thunderstorm Warning | LBF | Garfield | 64 min |
Nearby
Severe Thunderstorm Warnings in Nebraska, 2001Every severe thunderstorm warning in 2001
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.