Alert archive / Nebraska / Severe Thunderstorm Warnings in 2002
Severe Thunderstorm Warning 225, NWS Hastings, NE
NWS Hastings, NE issued this severe thunderstorm warning at Aug 18, 2002, 11:36 PM CDT for Nuckolls County, Webster County, Nebraska. It was in force for 54 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Aug 18, 2002, 11:36 PM CDT (04:36 UTC)
- Expired
- Aug 19, 2002, 12:30 AM CDT
- In force
- 54 min
- Issued by
- NWS Hastings, NE
- Area
- Counties, with a storm outline in the text
Counties Nuckolls County, NE, Webster County, NE
Did it verify
Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.
Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.
The nearest sounding before it
Omaha, NE (KOAX), launched 00:00Z, 4.6 hours before the alert went out and 205 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
- 16 J/kg
- Mixed-layer CIN
- -913 J/kg
- Mixed-layer LCL
- 485 m above ground
- 0-6 km bulk shear
- 47 kt
- 0-1 km storm-relative helicity
- 231 m²/s²
- 0-3 km storm-relative helicity
- 244 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 Hastings, NE wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 18, 1:30 PM CDT, 10 hours 6 minutes earlier.
Area forecast discussion, Aug 18, 1:30 PM CDT, 10 hours 6 minutes before
SOUTH CENTRAL NEBRASKA/NORTH CENTRAL KANSAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE HASTINGS NE 130 PM CDT SUN AUG 17 2002 ...TIMING TSRA CHCS THIS WEEK WILL BE THE MAIN CHALLENGE... BASICALLY ZONAL FLOW ACROSS CNTRL PLAINS. PER 12Z UAA AND WATER VAPOR ANOTHER STRONG UPPER WAVE IS DROPPING SE THROUGH MT. 90KT JET HELPING TO STREAM A NICE AREA OF MID/UPPER CLDS RIGHT OVER CWA. TRAPPED UNDER THIS IS A SOLID STRATUS DECK TO THE NORTH OF STATIONARY->WARM FRONT ACROSS CENTRAL KANSAS. HENCE...EROSION OF CLOUDS HAS BEEN VERY SLOW AND NORTHWARD PROGRESS OF FRONT LIMITED. STRONG CAPPING HAS EXPANDED INTO AREA...WITH 16C H7 TEMPS AT LBF/DDC. THIS WILL INHIBIT ACTIVITY UNTIL THIS EVENING AS UPPER WAVE/ASSOCD COLD FRONT IMPINGES ON AREA. GIVEN KS FRONTAL POSITION AND RATHER QUICK NW TO SE PUSH WITH COLD FRONT THIS EVENING...IT APPEARS TSRAS CHCS WILL BE LIMITED TO SOUTH. WILL REARRANGE ZONES FOR THIS. STILL NOT SURE I WANT TO COMMIT TO LIKELY POPS AS THE FORCING THAT FINALLY FIRES STORMS MAY FOCUS THINGS SE OF AREA PRETTY QUICKLY. BEYOND TONIGHT...PATTERN GRADUALLY SHIFTS TO WSW FLOW AS ANOTHER WAVE DROPS INTO WRN CONUS FROM BC. THIS WILL SET UP A STRING OF WAVES THIS WEEK. FIRST ONE WILL BRING OVERRUNNING PRECIP CHCS ON MONDAY NIGHT AS LLVL FRONT LIFTS BACK NORTH ACROSS KANSAS. LATE TUE/TUE NIGHT WILL PROBABLY BE DRY AS FRONT LIFTS NORTH OF AREA. HWVR...THIS WILL BE A CLOSE CALL. WED/THU TSRA CHCS STILL LOOK REASONABLE. BY THU NIGHT... FLOW IS IN PROCESS OF SHIFTING TO NW AS ANOTHER STRONG WAVES DROPS SE OUT OF SC CANADA. THIS WILL PROBABLY BE THE GRAND FINALE...BEFORE DRIER NW FLOW PUSHES TSRA SOUTH/WEST OF CWA. TEMPS TO REMAIN COOL ON MONDAY IN EAST FLOW BEHIND TONIGHT FRONT. TUE WILL BE WARMER...BUT HOW MUCH? WILL BACK OFF CURRENT FCST IN THE U80S TO M90S...ESP NRN AREAS. GUIDANCE SUGGESTS TEMPS 3-5 DEG COOLER. WED AND THU TO REMAIN AOA NORMAL...DEPENDING ON CLOUDCOVER DURING DAY. FRI IS TRANSITION AS NW FLOW PUSHES COLD FRONT THRU AREA. RELATIVELY COOL/DRY OVER THE WEEKEND. .GID...NONE. GURNEY
The office that day
Everything else NWS Hastings, NE issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 18, 11:41 PM CDT | Severe Thunderstorm Warning | GID | Nuckolls, Webster | 49 min |
Nearby
Severe Thunderstorm Warnings in Nebraska, 2002Every severe thunderstorm warning in 2002
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive.