Alert archive / Nebraska / Heat Advisories in 2011
Heat Advisory 5, NWS North Platte, NE
NWS North Platte, NE issued this heat advisory at Jul 31, 2011, 4:33 AM CDT for 8 counties in Nebraska. It took effect at Jul 31, 2011, 1:00 PM CDT. It was in force for 7 hr.
The area
The counties it named.
The facts
- Issued
- Jul 31, 2011, 4:33 AM CDT (09:33 UTC)
- In effect from
- Jul 31, 2011, 1:00 PM CDT
- Expired
- Jul 31, 2011, 8:00 PM CDT
- In force
- 7 hr
- Issued by
- NWS North Platte, NE
Counties Boyd County, NE, Brown County, NE, Cherry County, NE, Holt County, NE, Keya Paha County, NE, Rock County, NE, Sheridan County, NE, Wheeler County, NE
The radar
The North Platte radar (KLNX), 86 km from the middle of the area, began a volume at 09:39 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.
The nearest sounding before it
Aberdeen, SD (KABR), launched 00:00Z, 9.6 hours before the alert went out and 290 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
- 4943 J/kg
- Mixed-layer CIN
- -34 J/kg
- Mixed-layer LCL
- 961 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- 102 m²/s²
- 0-3 km storm-relative helicity
- 163 m²/s²
- Significant tornado parameter
- 2.7
- Supercell composite
- 12.6
What forecasters said that day
The local office's own words before this heat advisory 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 heat advisory went out at Jul 31, 3:59 AM CDT, 34 minutes earlier.
Area forecast discussion, Jul 31, 3:59 AM CDT, 34 minutes before
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</html>Hazardous weather outlook, Jul 30, 3:51 PM CDT, 12 hours 42 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE NORTH PLATTE NE 351 PM CDT SAT JUL 30 2011 NEZ004>010-022>029-035>038-056>059-069>071-094-312100- SHERIDAN-EASTERN CHERRY-KEYA PAHA-BOYD-BROWN-ROCK-HOLT-GARDEN- GRANT-HOOKER-THOMAS-BLAINE-LOUP-GARFIELD-WHEELER-ARTHUR-MCPHERSON- LOGAN-CUSTER-DEUEL-KEITH-PERKINS-LINCOLN-CHASE-HAYES-FRONTIER- WESTERN CHERRY- 351 PM CDT SAT JUL 30 2011 /251 PM MDT SAT JUL 30 2011/ THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF WESTERN AND NORTH CENTRAL NEBRASKA. .DAY ONE...TONIGHT. ISOLATED THUNDERSTORM ARE POSSIBLE OVER PORTIONS OF WESTERN NEBRASKA LATE THIS AFTERNOON AND EARLY TONIGHT...MAINLY WEST OF AN OGALLALA TO VALENTINE LINE. THE THUNDERSTORMS ARE NOT EXPECTED TO BE SEVERE...HOWEVER THE STORMS WILL BE HIGH BASED...WITH GUSTY WINDS APPROACHING SEVERE LIMITS POSSIBLE FROM ANY STORM THAT DEVELOPS. .DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY. HOT AND HUMID CONDITIONS ARE EXPECTED SUNDAY THROUGH TUESDAY ACROSS THE FORECAST AREA. THE FORECAST WOULD INDICATE THAT SUNDAY AND MONDAY WILL HAVE TO POTENTIAL TO BE THE HOTTEST OF THE DAYS...WITH HIGH TEMPERATURES IN THE MID AND UPPER 90S. LOCALIZED TRIPLE DIGIT READINGS ARE NOT OUT OF THE QUESTION SOUTH OF INTERSTATE 80 ON MONDAY. CORRESPONDING HEAT INDEX VALUES ALONG AND EAST OF AN IMPERIAL TO MULLEN TO VALENTINE LINE HAVE THE POTENTIAL TO EXCEED 100 DEGREES WITH A POSSIBLE HEAT ADVISORY NEEDED...ESPECIALLY FOR MONDAY. A RETURN TO AN ACTIVE PATTERN BEGINS LATE TUESDAY AND WILL CONTINUE THROUGH THE REST OF THE WEEK. STRONG THUNDERSTORMS WILL BE POSSIBLE...HOWEVER NO WIDESPREAD SEVERE THUNDERSTORMS ARE ANTICIPATED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT EXPECTED THROUGH TONIGHT. && THIS PRODUCT IS NOW AVAILABLE...ALONG WITH OTHER WEATHER... HYDROLOGICAL AND CLIMATOLOGICAL INFORMATION...AT HTTP://WWW.WEATHER.GOV/NORTHPLATTE JACOBS
The office that day
Everything else NWS North Platte, NE issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 30, 7:25 PM CDT | Severe Thunderstorm Warning | LBF | Cherry | 50 min |
| Jul 31, 3:22 PM CDT | Heat Advisory | LBF | Blaine, Boyd, Brown, Chase, Cherry, Custer and 14 more | 29 hr |
Nearby
Heat Advisories in Nebraska, 2011Every heat advisory in 2011
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; radar from the NEXRAD Level II archive.