Alert archive / Alaska / Flash Flood Warnings in 2007
Flash Flood Warning 3, NWS Fairbanks, AK
NWS Fairbanks, AK issued this flash flood warning at Apr 26, 2007, 10:33 AM AKDT. It was in force for 18 hr. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Apr 26, 2007, 10:33 AM AKDT (18:33 UTC)
- Expired
- Apr 27, 2007, 5:00 AM AKDT
- In force
- 18 hr
- Issued by
- NWS Fairbanks, AK
- Area
- Counties, with a storm outline in the text
Did it verify
Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this flash flood 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
Point Barrow, (PBRW), launched 12:00Z, 6.6 hours before the alert went out and 243 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1152 m above ground
- 0-6 km bulk shear
- 20 kt
- 0-1 km storm-relative helicity
- 14 m²/s²
- 0-3 km storm-relative helicity
- 50 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WGAK59 PAFG 262334 FFWAFG AKZ205-270000- TEST...FLASH FLOOD WARNING...TEST NATIONAL WEATHER SERVICE FAIRBANKS AK 333 PM ADT THU APR 26 2007 ...THIS MESSAGE IS FOR TEST PURPOSES ONLY... THE NATIONAL WEATHER SERVICE IN FAIRBANKS HAS ISSUED A * THIS IS A TEST MESSAGE. FLASH FLOOD WARNING FOR IVOTUK CREEK * UNTIL 400 PM ADT * THIS IS A TEST MESSAGE. * THIS IS A TEST MESSAGE. THIS IS A TEST MESSAGE. A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING. IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY. RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO CROSS SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR BY AUTOMOBILE. THIS IS A TEST MESSAGE. EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL CREEKS AND STREAMS...URBAN AREAS... HIGHWAYS...STREETS AND UNDERPASSES AS WELL AS OTHER DRAINAGE AREAS AND LOW LYING SPOTS. THIS IS A TEST MESSAGE. DO NOT TAKE ACTION BASED ON THIS MESSAGE. LAT...LON 6907 15585 6907 15535 6925 15534 6925 15585 $$ EWP
2 follow-up statements
000 WGAK79 PAFG 262336 FFSAFG TEST...FLASH FLOOD STATEMENT...TEST NATIONAL WEATHER SERVICE FAIRBANKS AK 336 PM ADT THU APR 26 2007 ...THIS MESSAGE IS FOR TEST PURPOSES ONLY... AKZ205-270030- NORTHWESTERN BROOKS RANGE AK- 336 PM ADT THU APR 26 2007 ...THIS MESSAGE IS FOR TEST PURPOSES ONLY... ...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 430 PM ADT FOR IVOTUK CREEK... THIS IS A TEST MESSAGE. EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL CREEKS AND STREAMS...URBAN AREAS... HIGHWAYS...STREETS AND UNDERPASSES AS WELL AS OTHER DRAINAGE AREAS AND LOW LYING SPOTS. THIS IS A TEST MESSAGE. DO NOT TAKE ACTION BASED ON THIS MESSAGE. LAT...LON 6907 15585 6907 15535 6925 15534 6925 15585 $$ EWP
000 WGAK79 PAFG 262337 FFSAFG TEST...FLASH FLOOD STATEMENT...TEST NATIONAL WEATHER SERVICE FAIRBANKS AK 337 PM ADT THU APR 26 2007 ...THIS MESSAGE IS FOR TEST PURPOSES ONLY... AKZ205-262347- NORTHWESTERN BROOKS RANGE AK- 337 PM ADT THU APR 26 2007 ...THIS MESSAGE IS FOR TEST PURPOSES ONLY... ...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR IVOTUK CREEK... THIS IS A TEST MESSAGE. EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL CREEKS AND STREAMS...URBAN AREAS... HIGHWAYS...STREETS AND UNDERPASSES AS WELL AS OTHER DRAINAGE AREAS AND LOW LYING SPOTS. THIS IS A TEST MESSAGE. DO NOT TAKE ACTION BASED ON THIS MESSAGE. LAT...LON 6907 15585 6907 15535 6925 15534 6925 15585 $$ EWP
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 Fairbanks, AK wrote its last area forecast discussion before this flash flood warning went out at Apr 26, 9:22 AM AKDT, 1 hour 11 minutes earlier.
Area forecast discussion, Apr 26, 9:22 AM AKDT, 1 hour 11 minutes before
NORTHERN ALASKA FORECAST DISCUSSION NATIONAL WEATHER SERVICE FAIRBANKS AK 222 PM ADT THU APR 26 2007 .DISCUSSION... LARGE SCALE PATTERN FOR NORTHERN ALASKA FAIRLY STAGNANT WITH MAIN STORM TRACK OVER THE NORTH PACIFIC. HOWEVER...A SOMEWHAT COMPLEX PATTERN FOR THE EASTERN INTERIOR...AS WEAK FEATURES SPUN OFF FROM GULF OF ALASKA CYCLONE WILL BRING AT LEAST A CHANCE FOR SOME SNOW. THE MODELS ARE FAIRLY SIMILAR IN HOW THEY HANDLE THE OVERALL PATTERN...THE NAM SEEMS TO OVERDO THE PRECIP AMOUNTS...BUT THE GFS AND THE NAM HAVE SIMILAR PATTERNS IN PRECIP COVERAGE. AS USUAL...BOTH MODELS SEEM TO PLACE THE MOST PRECIP IN EXTREME SOUTHEASTERN ZONES. A 1031 MB HIGH WILL CONTINUE TO WEAKEN OVER THE HIGH ARCTIC...THOUGH NOT AS FAST AS THE MODELS ADVERTISE...SO WILL KEEP UP WINDS ALONG THE NORTH SLOPE INTO SATURDAY AND THE BLOWING SNOW ADVISORY INTO FRIDAY...THOUGH THE BLSN ADVISORY MAY NEED TO BE CANCELED SOONER. A DRY COLD FRONT LYING FROM WAINWRIGHT TO FAIRBANKS TO EAGLE WILL CONTINUE TO MOVE SOUTHWEST AND STALL ON FRIDAY FROM SHISHMAREF TO ANVIK TO NORTHWAY. BEHIND THE FRONT LIES DRY...WINDY AND COOLER AIR. A WEAK OCCLUDED FRONT MOVING OUT OF THE GULF OF ALASKA WILL OVERRUN THE STALLED COLD FRONT ON FRI AFTERNOON BRINGING A CHANCE OF RAIN AND SNOW...MAINLY SNOW...TO THE SOUTHEASTERN PARTS OF THE INTERIOR AND SOME RH RECOVERY TO THE REST OF THE INTERIOR. THIS WILL PERSIST INTO THE WEEKEND. COASTAL HAZARD POTENTIAL DAYS 3 AND 4...NONE && .FIRE WEATHER... PASSAGE OF COLD FRONT NOW BRINGING LOW RH AND HIGH WINDS TO ZONES 221 AND 222 VERIFYING THE CURRENT RED FLAG WARNING FOR THESE ZONES. WINDS WILL BEGIN TO DECREASE AND RH WILL RECOVER OVERNIGHT. AS THE FRONT WEAKENS...WINDS WILL DECREASE FRIDAY. && .AFG WATCHES/WARNINGS/ADVISORIES... RED FLAG WARNING FOR AKZ221-AKZ222. GALE WARNING FOR PKZ240. BLOWING SNOW ADVISORY FOR AKZ203. BRISK WIND ADVISORY FOR PKZ225-PKZ230-PKZ235-PKZ245. PKA APR 07
The office that day
Everything else NWS Fairbanks, AK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 25, 10:27 PM AKDT | Brisk Wind Advisory | AFG | 4 days | |
| Apr 25, 10:27 PM AKDT | Gale Warning | AFG | 35 hr | |
| Apr 26, 1:34 AM AKDT | Blowing Snow Advisory | AFG | 44 hr | |
| Apr 26, 2:48 AM AKDT | Red Flag Warning | AFG | 19 hr | |
| Apr 26, 8:54 AM AKDT | Brisk Wind Advisory | AFG | 24 hr |
Nearby
Flash Flood Warnings in Alaska, 2007Every flash flood warning in 2007
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.