WX deviations and a WX diversion at ZZZ airport cause EMB140 crew to declare a low fuel emergency.

Attributes
ACN	702427
Time
Date	200607
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : zzz.airport
State Reference	US
Environment
Flight Conditions	VMC
Weather Elements	Thunderstorm Windshear
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : zzz.tracon
Operator	common carrier : air carrier
Make Model Name	EMB ERJ 140 ER&LR
Operating Under FAR Part	Part 121
Flight Phase	descent : approach
Route In Use	approach : visual
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
ASRS Report	702427
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
ASRS Report	702426
Events
Anomaly	inflight encounter : weather other anomaly other
Independent Detector	other flight crewa
Resolutory Action	controller : issued new clearance flight crew : diverted to another airport flight crew : executed missed approach flight crew : declared emergency
Supplementary
Problem Areas	Company Weather
Primary Problem	Weather

Narrative:

En route rerouting into ZZZ1 due to WX/local thunderstorms. ATC rerouted us farther south and west than expected. I made frequent contact with dispatch and advised of new routings and fuel on board. Dispatch indicated ZZZ1 no longer needed an alternate due to improved WX conditions so we elected to proceed with the approach phase of our flight. On short final at approximately 1500 ft; ZZZ1 ATC tower indicated a new windshear alert in all quadrants of the field and asked us our intentions. We elected to do a missed approach and we were vectored to the west away from the bad WX. We asked ATC if our original alternate of ZZZ2 was available and they indicated ZZZ2 had a strong storm 2 - 2.5 mi north moving south at rapid rate. We asked if ZZZ3 was available but was told a strong storm was overhead that airport. After putting in ZZZ4 and ZZZ5 into our FMS; we determined we had insufficient fuel to safely proceed to either of those destinations. At that point I declared a fuel emergency and asked ZZZ1 approach the WX conditions at ZZZ. The WX at ZZZ was acceptable and after reviewing our runway performance criteria; told ATC we wanted to divert to ZZZ. We landed at ZZZ without incident.

Original NASA ASRS Text

Title: WX DEVS AND A WX DIVERSION AT ZZZ ARPT CAUSE EMB140 CREW TO DECLARE A LOW FUEL EMER.

Narrative: ENRTE REROUTING INTO ZZZ1 DUE TO WX/LCL TSTMS. ATC REROUTED US FARTHER S AND W THAN EXPECTED. I MADE FREQUENT CONTACT WITH DISPATCH AND ADVISED OF NEW ROUTINGS AND FUEL ON BOARD. DISPATCH INDICATED ZZZ1 NO LONGER NEEDED AN ALTERNATE DUE TO IMPROVED WX CONDITIONS SO WE ELECTED TO PROCEED WITH THE APCH PHASE OF OUR FLT. ON SHORT FINAL AT APPROX 1500 FT; ZZZ1 ATC TWR INDICATED A NEW WINDSHEAR ALERT IN ALL QUADRANTS OF THE FIELD AND ASKED US OUR INTENTIONS. WE ELECTED TO DO A MISSED APCH AND WE WERE VECTORED TO THE W AWAY FROM THE BAD WX. WE ASKED ATC IF OUR ORIGINAL ALTERNATE OF ZZZ2 WAS AVAILABLE AND THEY INDICATED ZZZ2 HAD A STRONG STORM 2 - 2.5 MI N MOVING S AT RAPID RATE. WE ASKED IF ZZZ3 WAS AVAILABLE BUT WAS TOLD A STRONG STORM WAS OVERHEAD THAT ARPT. AFTER PUTTING IN ZZZ4 AND ZZZ5 INTO OUR FMS; WE DETERMINED WE HAD INSUFFICIENT FUEL TO SAFELY PROCEED TO EITHER OF THOSE DESTS. AT THAT POINT I DECLARED A FUEL EMER AND ASKED ZZZ1 APCH THE WX CONDITIONS AT ZZZ. THE WX AT ZZZ WAS ACCEPTABLE AND AFTER REVIEWING OUR RWY PERFORMANCE CRITERIA; TOLD ATC WE WANTED TO DIVERT TO ZZZ. WE LANDED AT ZZZ WITHOUT INCIDENT.

Data retrieved from NASA's ASRS site as of January 2009 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.