Alert archive / Nebraska / Severe Thunderstorm Warnings in 2002
Severe Thunderstorm Warning 188, NWS Hastings, NE
NWS Hastings, NE issued this severe thunderstorm warning at Jul 30, 2002, 12:17 PM CDT for Polk County, Nebraska. It was in force for 43 min. 1 report 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 30, 2002, 12:17 PM CDT (17:17 UTC)
- Expired
- Jul 30, 2002, 1:00 PM CDT
- In force
- 43 min
- Issued by
- NWS Hastings, NE
- Area
- Counties, with a storm outline in the text
County Polk County, NE
The radar
The Omaha radar (KOAX), 105 km from the middle of the area, began a volume at 17:18 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 30, 12:26 PM CDT | Hail 1.75 | Shelby, 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.
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
N. Platte/Lee Bi, NE (KLBF), launched 12:00Z, 5.3 hours before the alert went out and 250 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
- 1420 J/kg
- Mixed-layer CIN
- -326 J/kg
- Mixed-layer LCL
- 2219 m above ground
- 0-6 km bulk shear
- 21 kt
- 0-1 km storm-relative helicity
- 186 m²/s²
- 0-3 km storm-relative helicity
- 193 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
647
WUUS53 KGID 301717
SVRGRI
NEC143-301800-
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE HASTINGS NE
1217 PM CDT TUE JUL 30 2002
THE NATIONAL WEATHER SERVICE IN HASTINGS HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
POLK COUNTY IN EAST CENTRAL NEBRASKA
* UNTIL 100 PM CDT
* AT 1215 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM OVER SHELBY...OR ABOUT 15 MILES SOUTH OF
COLUMBUS...MOVING SOUTHEAST AT 15 MPH.
SOME LOCATIONS IN THE PATH OF THIS SEVERE STORM INCLUDE RURAL EASTERN
POLK COUNTY AND SHELBY.
PEOPLE IN POLK COUNTY SHOULD SEEK SHELTER IN A STURDY STRUCTURE AND
STAY AWAY FROM WINDOWS.
THE PRIMARY SEVERE WEATHER THREAT IS LARGE HAIL THE SIZE OF DIMES.
LAT...LON 4115 9780 4106 9780 4107 9743 4135 9739
4136 9746
NNNNWhat 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 Jul 30, 2:46 AM CDT, 9 hours 31 minutes earlier.
Area forecast discussion, Jul 30, 2:46 AM CDT, 9 hours 31 minutes before
SOUTH CENTRAL NEBRASKA/NORTH CENTRAL KANSAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE HASTINGS NE 246 AM CDT TUE JUL 30 2002 WARM TEMPS THE NEXT COUPLE OF DAYS AND TSTM CHCS ARE THE MAIN CONCERNS EVENING UPPER AIR ANALYSIS PLACED 120KT H3 JET ACROSS BRITISH COLUMBIA. OVERALL FLOW WAS ZONAL ACROSS THE NORTHERN HALF OF THE CONUS WITH HIGH PRESSURE IN THE SOUTHWEST US...AND A LOW IN THE FAR SOUTH. SHORTWAVE TROF TRANSLATING ACROSS THE NORTHERN PLAINS WILL BRING SFC BOUNDARY INTO NORTHERN NEBRASKA THIS AFTERNOON. THERE IS A SLIGHT CHC OF TSTM DEVELOPMENT ALONG THE BOUNDARY THIS AFTN/EVENING IN OUR NORTHEAST CWA WHILE WARM H7 TEMPS OF 14-16C SHLD INHIBIT STORMS TO THE WEST. LATEST SWODY1 HAS PLACED OUR NORTHEAST COUNTIES IN THE SLIGHT RISK CATEGORY. IF STORMS DEVELOP...MAIN HAZARD WOULD BE WIND WITH HAIL A SECONDARY CONCERN. OTHERWISE...TEMPS SHLD BE RATHER WARM AGAIN WITH HIGHS GENERALLY UPPER 90S TO AROUND 100F. THE HOT TEMPS WILL PERSIST THROUGH WEDNESDAY AHEAD OF COOL FRONT. ETA H85 TEMP PROGS 28-33C E/W ACROSS THE CWA WHICH SUGGESTS HIGHS IN THE TRIPLE DIGITS. THIS IS ALREADY REFLECTED IN FCST WITH MAX TEMPS 100-105F. AVN DEVELOPS PCPN WED NIGHT AS BOUNDARY BEGINS TO SAG SOUTH...HOWEVER BELIEVE WARM MID LEVEL TEMPS WILL AGAIN SUPPRESS ANY TSTM ACTIVITY UNTIL THURSDAY AS UPPER ENERGY TRANSLATES FURTHER SOUTH...AND HEIGHTS LOWER...ALLOWING CAP TO WEAKEN. WITH BETTER UPPER SUPPORT AND NOW MORE CONSISTENCY IN MODELS WITH FRONTAL POSITION THURSDAY NIGHT...WILL INCREASE POPS THURS NIGHT TO 30 PCNT. AVN IS TRENDING WETTER WITH FCST INTO THE WEEKEND...SHOWING A SERIES OF SHORTWAVE TROFS LIFTING OUT OF THE SOUTHERN ROCKIES AND ONTO THE PLAINS. AT THIS POINT...WILL CONTINUE TO MONITOR TRENDS OF THIS AND MAINTAIN A DRY FORECAST. THE LATEST MRF HAS DONE AN ABOUT FACE WITH THE PREVIOUS RUN SHOWING A MORE AMPLITUDE PATTERN WITH A RIDGE OVER THE ROCKIES AND TROF FROM THE GREAT LAKES THRU THE OHIO VALLEY. SUBSEQUENTLY...THE LATEST NUMERICAL GUIDANCE HAS TRENDED COOLER IN THE EXTENDED. AT THIS POINT WILL NOT FLIP FLOP AND WILL LEAVE THE EXTENDED AS IS AND WATCH FOR LATER TRENDS. .GID...NONE. FAY
In the hours before
Local storm report, Jul 30, 11:01 AM CDT, 1 hour 16 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE HASTINGS NE
1101 AM CDT TUE JUL 30 2002
TIME(CDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
1055 AM GENOA NE 1 INCH HAIL
07/30/02 NANCESpecial weather statement, Jul 30, 11:45 AM CDT, 32 minutes before
KSZ005>007-017>019-NEZ039>041-046>049-060>064-072>077-082>087-312300- HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE HASTINGS NE 1145 AM CDT TUE JUL 30 2002 ...SPOTTER ACTIVATION SHOULD NOT BE NEEDED ACROSS SOUTH CENTRAL NEBRASKA AND NORTH CENTRAL KANSAS THROUGH TONIGHT... THERE IS A SLIGHT CHANCE OF THUNDERSTORMS THIS AFTERNOON AND EVENING NORTH OF HIGHWAY TWO TO GRAND ISLAND...AND THEN EAST TO YORK. A SURFACE TROUGH...THAT STRETCHES FROM A WEAK LOW PRESSURE CENTER IN SOUTHEASTERN SOUTH DAKOTA...DOWN TO NORTH CENTRAL KANSAS...WILL REMAIN NEAR THE FORECAST AREA THROUGH THIS EVENING...HELPING TO PROVIDE THE FOCUS FOR THUNDERSTORM DEVELOPMENT...AS A WEAK UPPER LEVEL DISTURBANCE ALSO MOVES OVER THE REGION. ALTHOUGH THUNDERSTORM ACTIVITY IS NOT EXPECTED TO BE WIDESPREAD...AN ISOLATED STORM COULD PRODUCE STRONG WINDS AND HAIL TO ONE INCH IN SIZE. OTHERWISE...SOUTH OF THIS AREA THUNDERSTORMS ARE NOT EXPECTED NOT FORM DUE TO VERY WARM MID LEVEL TEMPERATURES. 10
Special weather statement, Jul 30, 11:45 AM CDT, 32 minutes before
KSZ005>007-017>019-NEZ039>041-046>049-060>064-072>077-082>087-312300- HAZARDOUS WEATHER OUTLOOK...CORRECTED NATIONAL WEATHER SERVICE HASTINGS NE 1145 AM CDT TUE JUL 30 2002 CORRECTED WORDING ...SPOTTER ACTIVATION SHOULD NOT BE NEEDED ACROSS SOUTH CENTRAL NEBRASKA AND NORTH CENTRAL KANSAS THROUGH TONIGHT... THERE IS A SLIGHT CHANCE OF THUNDERSTORMS THIS AFTERNOON AND EVENING NORTH OF HIGHWAY TWO TO GRAND ISLAND...AND THEN EAST TO YORK. A SURFACE TROUGH...THAT STRETCHES FROM A WEAK LOW PRESSURE CENTER IN SOUTHEASTERN SOUTH DAKOTA...DOWN TO NORTH CENTRAL KANSAS...WILL REMAIN NEAR THE FORECAST AREA THROUGH THIS EVENING...HELPING TO PROVIDE THE FOCUS FOR THUNDERSTORM DEVELOPMENT...AS A WEAK UPPER LEVEL DISTURBANCE ALSO MOVES OVER THE REGION. ALTHOUGH THUNDERSTORM ACTIVITY IS NOT EXPECTED TO BE WIDESPREAD...AN ISOLATED STORM COULD PRODUCE STRONG WINDS AND HAIL TO ONE INCH IN SIZE. OTHERWISE...SOUTH OF THIS AREA THUNDERSTORMS ARE NOT EXPECTED TO FORM DUE TO VERY WARM MID LEVEL TEMPERATURES. 10
The office that day
Everything else NWS Hastings, NE issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 30, 10:30 AM CDT | Severe Thunderstorm Warning | GID | Nance | 45 min |
| Jul 30, 12:56 PM CDT | Severe Thunderstorm Warning | GID | Polk, York | 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.