Alert archive / Nebraska / Tornado Warnings in 1999
Tornado Warning 25, NWS North Platte, NE
NWS North Platte, NE issued this tornado warning at Jun 22, 1999, 7:33 PM CDT for Brown County, Cherry County, Nebraska. It was in force for 62 min. 2 reports 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
- Jun 22, 1999, 7:33 PM CDT (00:33 UTC)
- Expired
- Jun 22, 1999, 8:35 PM CDT
- In force
- 62 min
- Issued by
- NWS North Platte, NE
- Area
- Whole counties
Counties Brown County, NE, Cherry County, NE
The radar
The North Platte radar (KLNX), 59 km from the middle of the area, began a volume at 00:34 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 |
|---|---|---|---|
| Jun 22, 7:40 PM CDT | Hail 0.88 | Wood Lake, NE | |
| Jun 22, 7:45 PM CDT | Thunderstorm Wind 95 | Ainsworth, NE | A thunderstorm system produced strong wind with speed estimated in excess of 90 mph. The wind storm actually began in eastern Cherry County near Wood Lake and travelled across most of northern Brown County doing major damage to grain bins 10 miles west of Ains |
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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jun 22, 5:00 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 0.6 hours before the alert went out and 151 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
- 2613 J/kg
- Mixed-layer CIN
- -16 J/kg
- Mixed-layer LCL
- 1568 m above ground
- 0-6 km bulk shear
- 32 kt
- 0-1 km storm-relative helicity
- 25 m²/s²
- 0-3 km storm-relative helicity
- 62 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 3.3
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KLBF 230032 TORLBF NEC017-031-230135- BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE NORTH PLATTE NE 733 PM CDT (633 PM MDT) TUE JUN 22 1999 THE NATIONAL WEATHER SERVICE IN NORTH PLATTE HAS ISSUED A * TORNADO WARNING FOR... NORTHERN BROWN COUNTY IN NORTH CENTRAL NEBRASKA EASTERN CHERRY COUNTY IN NORTH CENTRAL NEBRASKA * UNTIL 835 PM CDT * AT 731 PM CDT... NORTH PLATTE DOPPLER RADAR INDICATED A POSSIBLE TORNADO 18 MILES WEST OF AINSWORTH OR 1 MILE EAST OF WOOD LAKE... MOVING EAST AT 10 MPH. THE TORNADO IS EXPECTED TO REMAIN IN RURAL AREAS ALONG AND NORTH OF HIGHWAY 20. GO TO THE BASEMENT OR A SMALL INTERIOR ROOM ON THE LOWEST FLOOR! RLB
What forecasters said that day
The local office's own words before this tornado 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 tornado warning went out at Jun 22, 1:49 PM CDT, 5 hours 44 minutes earlier.
Area forecast discussion, Jun 22, 1:49 PM CDT, 5 hours 44 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE NORTH PLATTE NE 149 PM CDT TUE JUN 22 1999 ...FORECAST CHALLENGE IS WHEN PCPN WILL END... MODELS...IN PRETTY GOOD AGREEMENT. NGM HAD GOOD HANDLE ON SURFACE FEATURES THIS MORNING...BUT WANTS TO FOCUS PCPN OVER NORTHWEST IOWA AT 00Z WED WHILE ETA FOCUSES OVER SOUTHEAST NEBRASKA. ETA IS MORE IN LINE WITH REALITY IN MOS OTHER FEATURES. NOTICED GOOD THETA-E POOLING VIA LAPS DATA ALONG AND EAST OF IML-VTN LINE WHERE CONVECTION HAD BEGUN LATE THIS MORNING. SHOWERS DISSIPATED AS THEY MOVED INTO LOWER THETA-E AIR...AWAY FROM SURFACE TROUGH. IMAGINE THETA-E RIDGE WILL BE A FOCUS FOR ACTIVITY LATER TODAY ONCE FRONT MOVES IN. ...TONIGHT INTO WED MORNING...SHOWERS/THUNDERSTORMS LOOK PRETTY LIKELY ALL OVER...BEGINNING IN THE NORTHWEST AND SPREADING EAST OVERNIGHT. LOWS HAVE BEEN RUNNING HIGHER THAN GUIDANCE AND WILL LIKELY FOLLOW SUIT TONIGHT EXCEPT FOR NORTHEAST ZONES WHERE A LITTLE COOLER AIR FILTERS IN FIRST. WILL THE PCPN PERSIST INTO WEDNESDAY? PERHAPS SOME STABLE PCPN 06-12Z WED WHEN SFC FIELDS INDICATE FRONT WILL BE SOUTH OF CWA BY 12Z. WILL PUT IN LOW MORNING POPS FOR POSSIBLE LINGERING SHOWERS. WEDNESDAY/NIGHT...COOLER TEMPS (UPR 70S LOW 80S) AS WE GET A BREAK FROM THE ACTION DURING THE DAY. AS MORE EASTERLY UPSLOPE FLOW TAKES PLACE...EXPECT POSSIBLE SHOWERS TO DEVELOP ANYWHERE OVER PANHANDLE AREA LATE AND PROPOGATE EASTWARD DURING WED INTO THU OVERNIGHT HOURS. 40 POPS FOR WESTERN ZONES WED NIGHT...20 FOR NORTHEAST ZONES. FOR LOWS... THINKING SOMETHING AROUND 62. THURSDAY...FAIRLY FAST FLOW OVER FLAT RIDGE...LOOKS FAIRLY DRY...BUT SOME CLOUDINESS. WOULD ANTICIPATE PRETTY GOOD REBOUND IN TEMPS TO MID-UPR 80S AGAIN. EXTENDED...MRF...ZONAL FLOW THURSDAY GIVES WAY TO WEAK SOUTHWEST FLOW FRIDAY AS LOW/TROUGH DIGS INTO PACIFIC NORTHWEST AND LEE SIDE TROF DEVELOPS. GOOD WARM CAPPING THO (PER CHAT WITH HSI) AND LOOKS LIKE MOST LIKELY TIMING FOR NEXT ROUND OF PRECIP WOULD BE SATURDAY LATE. BROAD FLAT RIDGE BUILDS IN SUNDAY OVER HIGH PLAINS. FRIDAYS HIGH OF 95 FOR US SEEMS A BIT OVERDONE EVEN IF WE DO SEE 27 C AT 850. WILL GO HIGHS UPPER 80S TO AROUND 90...LOWS LOWER TO MID 60S. .LBF...NONE SLM |
The office that day
Everything else NWS North Platte, NE issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 22, 7:18 PM CDT | Severe Thunderstorm Warning | LBF | Cherry | 62 min |
| Jun 22, 7:32 PM CDT | Severe Thunderstorm Warning | LBF | Keya Paha | 63 min |
| Jun 22, 7:42 PM CDT | Severe Thunderstorm Warning | LBF | McPherson | 63 min |
| Jun 22, 7:43 PM CDT | Severe Thunderstorm Warning | LBF | Lincoln | 62 min |
| Jun 22, 8:04 PM CDT | Severe Thunderstorm Warning | LBF | Blaine, Custer, Logan | 61 min |
| Jun 22, 8:04 PM CDT | Severe Thunderstorm Warning | LBF | Brown, Rock | 61 min |
| Jun 22, 8:41 PM CDT | Severe Thunderstorm Warning | LBF | Frontier | 64 min |
| Jun 22, 9:08 PM CDT | Severe Thunderstorm Warning | LBF | Custer | 47 min |
| Jun 22, 9:57 PM CDT | Severe Thunderstorm Warning | LBF | Custer | 33 min |
Nearby
Tornado Warnings in Nebraska, 1999Every tornado warning in 1999Tornadoes in 1999
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.