Alert archive / Hawaii / Flash Flood Warnings in 2001
Flash Flood Warning 8, NWS Honolulu, HI
NWS Honolulu, HI issued this flash flood warning at Apr 2, 2001, 1:10 PM HST for Kauai County, Hawaii. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Apr 2, 2001, 1:10 PM HST (23:10 UTC)
- Expired
- Apr 2, 2001, 4:10 PM HST
- In force
- 3 hr
- Issued by
- NWS Honolulu, HI
- Area
- Whole counties
County Kauai County, HI
The nearest sounding before it
Lihue, (PHLI), launched 12:00Z, 11.2 hours before the alert went out and 37 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
- 1489 J/kg
- Mixed-layer CIN
- -1 J/kg
- Mixed-layer LCL
- 625 m above ground
- 0-6 km bulk shear
- 9 kt
- 0-1 km storm-relative helicity
- -12 m²/s²
- 0-3 km storm-relative helicity
- 32 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WGHW50 PHFO 022310 FFWHI HIZ001-030210- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE HONOLULU HI 110 PM HST MON APR 2 2001 THE NATIONAL WEATHER SERVICE IN HONOLULU HAS ISSUED A * FLASH FLOOD WARNING FOR... KAUAI WESTERN HALF OF KAUAI INCLUDING THE COMMUNITIES OF...HANALEI... WAINIHA...WAIMEA...BARKING SANDS TO KALAHEO AND KOLOA. * UNTIL 410 PM HST * AT 110 PM HST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED STRONG THUNDERSTORMS DEVELOPING OVER WAIMEA CANYON. * THUNDERSTORMS WITH EXCESSIVE RAINFALL WILL BE NEAR...WAIMEA CANYON WAINIHA AND SOUTHWARD ALONG WAIMEA CANYON AND THE WAIMEA RIVER. FLASH FLOODING IS EXPECTED IN NORMALLY DRY STREAMBEDS DURING THE NEXT TWO HOURS. PERSONS IN LOW-LYING OR FLOOD PRONE AREAS SHOULD MOVE TO HIGHER GROUND. A FLASH FLOOD WARNING MEANS THAT DANGEROUS FLOODING IS IMMINENT OR ALREADY OCCURRING. TAKE NECESSARY ACTIONS TO PROTECT LIFE AND PROPERTY AND CONTINUE PRECAUTIONS UNTIL THE THREAT AND THE WARNING ARE OVER. STAY TUNED TO NOAA WEATHER RADIO...LOCAL TV OR RADIO FOR FURTHER NATIONAL WEATHER SERVICE INFORMATION. FARRELL NATIONAL WEATHER SERVICE HONOLULU
1 follow-up statement
000 FGHW50 PHFO 030204 FFSHI HIZ001-030410- FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE HONOLULU HI 410 PM HST MON APR 2 2001 ...THE FLASH FLOOD WARNING FOR WESTERN PORTIONS OF KAUAI IS CANCELLED AT 410 PM HST... ...THE FLASH FLOOD WATCH FOR KAUAI REMAINS IN EFFECT UNTIL MIDNIGHT TONIGHT... THE HEAVY RAIN AND THUNDERSTORMS APPEAR TO HAVE MOVED OFFSHORE TO THE SOUTHWEST AND ENDED FOR KAUAI AND THUS THE FLASH FLOOD WARNING FOR WESTERN PORTIONS OF KAUAI IS CANCELLED AT 410 PM HST. WHILE NO ADDITIONAL HEAVY SHOWERS ARE EXPECTED OVERNIGHT...THE ATMOSPHERE REMAINS UNSTABLE AND THE GROUND IS SATURATED. THUS IF ANY HEAVY SHOWERS DO REDEVELOP OVERNIGHT FLASH FLOODING COULD OCCUR AND THE WATCH IS BEING LEFT IN EFFECT UNTIL MIDNIGHT. STAY TUNED TO NOAA WEATHER RADIO...LOCAL TV OR RADIO FOR FURTHER NATIONAL WEATHER SERVICE INFORMATION. FARRELL NATIONAL WEATHER SERVICE HONOLULU
What forecasters said that day
The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Honolulu, HI wrote its last area forecast discussion before this flash flood warning went out at Apr 2, 9:16 AM HST, 3 hours 54 minutes earlier.
Area forecast discussion, Apr 2, 9:16 AM HST, 3 hours 54 minutes before
AFDHI HAWAIIAN ISLANDS SYNOPTIC DISCUSSION AND GUIDANCE NATIONAL WEATHER SERVICE HONOLULU HI 10 AM HST MON APR 2 2001 SUMMARY...TRADE WINDS WILL STRENGTHEN AS A SURFACE TROUGH MOVES TO THE WEST OF KAUAI AND HIGH PRESSURE REBUILDS NORTH OF THE ISLANDS. SHOWERS WILL LINGER OVER KAUAI INTO EARLY AFTERNOON...BUT THE OTHER ISLANDS WILL SEE ONLY HIGH CLOUDS THROUGH THE DAY WITH SOME INCREASE IN TRADE SHOWERS WINDWARD AND MAUKA TOWARD EVENING. DISCUSSION...A K-INDEX OF 32...LIFTED INDEX OF -7.4 AND A RATHER LARGE THUNDERSTORM JUST TO THE NORTH OF KAUAI ARE INDICATIVE OF LEFT-OVER INSTABILITY OVER THE WESTERN END OF THE STATE. THUS WILL KEEP SHOWERS INTO EARLY AFTERNOON OVER THAT ISLANDS...BUT DRY THINGS A BIT FOR THE AFTERNOON ELSEWHERE. HIGH CLOUDS WILL CONTINUE TO MOVE OVER ALL ISLANDS...THICKEST OVER KAUAI AND OAHU...THROUGHOUT THE DAY. A SURFACE TROUGH TO THE WEST OF KAUAI WILL CONTINUE TO MOVE WEST AS HIGH PRESSURE BUILDS NORTH OF THE ISLANDS...AND THIS WILL CAUSE OUR TRADE WINDS TO STRENGTHEN INTO TUESDAY. ANOTHER WEAKNESS AS A FRONT APPROACHES FROM THE NORTHWEST LATER THIS WEEK MAY WEAKEN WINDS ONCE AGAIN...BUT MORE ON THIS LATER. MODELS ARE CURRENTLY IN SOME DISAGREEMENT OVER THE POSITIONING OF A DEVELOPING LOW TO THE WEST OF THE ISLANDS...BUT THERE IS SOME INDICATION THAT WINDS WILL TURN SOUTHEAST AND LIGHTEN SOMEWHAT THURSDAY NIGHT OR FRIDAY. THIS ORGANIZATION TO OUR WEST AND RISING PRESSURES OVER THE ISLANDS WILL LIKELY BRING MORE SUNSHINE TO THE BEACHES BY TUESDAY. AS FOR THE SITUATION LATER IN THE WEEK...STAY TUNED. FARRELL .PHFO.....WARNINGS.....NONE . WATCHES......NONE . ADVISORIES...NiONE
Nearby
Flash Flood Warnings in Hawaii, 2001Every flash flood 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; the sounding from the Mesonet's radiosonde archive.